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486,375 | Cannot run OpenVPN on port 53 (DNS Stops Working) | So I'm trying to get OpenVPN to work on port 53 - sadly this isn't working. I used IP tables to map port 53 to port 1194 (standard OpenVPN port) Here's what I run to do this: [CODE] This works as the connection is fine except for when I try to visit new domains! DNS just no longer works at all. Here's my server configu... | Bind your NAT rule to the IP address [CODE] is listening on. Your current rule is intercepting all traffic going through the server with a destination port of 53 (in this case, traffic traversing your [CODE] interface). Always try to make your rules as specific as possible; if you don't, weird things like this will hap... | 4 | 5 | 3,114 | 2013-03-10T06:41:16.793 | infrastructure | serverfault.com | |
253,642 | Automatically purge dropped tables in Oracle | I am using an Oracle 18c database in a build system. One of my builds is for a JPA/Hibernate project, which is configured as "create-drop". This means it will create all tables during startup and drop all of them again at the end. The problem is: I can't configure Hibernate to create "drop ... purge" statements. It see... | Is there any option to tell Oracle to immediately purge dropped tables? That would be disabling the recycle bin , if only for the current session. Include [CODE] in your build process, or, if this is a development system, you can consider turning it off via the instance initialization parameter. Alternatively, you can ... | 0 | 3 | 472 | 2019-11-19T16:21:19.667 | database_errors | dba.stackexchange.com | |
69,479 | Oracle 11G R2 install using separate instances or multiple schemas in a single instance | I am in the middle of a server upgrade, and have finally come to the conclusion that I need a very important question answered. I would like to inform everyone that I am a novice to Oracle Administration but am learning quickly and still have a lot to learn. The company I work for has many customers that use their own ... | One instance should be able to do the job. I'd recommend simply using AMM and ASMM. If your DB is on a server dedicated as the DB server (i.e. not running web services or other software), you might try setting: [CODE] = [CODE] = [CODE] = 50% to 60% of your server's physical memory. If this is less than 1500M, you're pr... | 1 | 0 | 864 | 2014-07-01T13:59:16.037 | database_errors | dba.stackexchange.com | |
203,511 | Multiple COUNTs over the same column | I have a table (PostgreSQL 9.6) containing 2.6 million+ timestamped rows associated with account identifiers, and for any given identifier, I want to count the total number of occurrences as well as just the number of occurrences today in a single query. For reference, this is the same table described in this question ... | I believe using a [CODE] + [CODE] expression would work, because the [CODE] enables you to do a 'selective count'. Or you can use the newer [CODE] : [CODE] With the dataset from your question, this gives the following results: [CODE] | 1 | 5 | 9,180 | 2018-04-10T14:30:00.710 | database_errors | dba.stackexchange.com | |
20,840 | Storing many small - and a few large - strings in an RDBMS | Let's say I have a table, and (among other things) it needs to store a large number of strings. Most will be small (20-100 characters), but a few will be quite large. Reads will be frequent, writes will be rare. What is a good general design for this type of table, using a traditional relational database? Here are some... | You failed to mention your DBMS but for Oracle and PostgreSQL you should simply put everything into a single CLOB column. The small values will automatically be stored "inline" and the large ones will be store out of line anyway. So the DBMS applies the logic of "switching" that you imply with your two column approach ... | 1 | 4 | 131 | 2012-07-13T12:35:49.687 | warehouse_errors | dba.stackexchange.com | |
60,999 | Change the row position of a record without messing anything else MySQL? | Hi I would like to ask if there is a smart way to change the record position of a table in mysql. My problem is this: I have a table with statistics data and when I recover all the details in a table called "details" I get the following result: [CODE] I would like the 11th record to be right after the 5th, thus right a... | A database is NOT Excel. The position of a column in a table is - in regard to normal USE of the table - completely arbitrary. To receive results from a table, you query it - and in that query, you can modify the (selected) column order to get your desired results. In the same vein, storing computed values (your column... | 1 | 0 | 2,975 | 2014-03-15T10:40:32.420 | database_errors | dba.stackexchange.com | |
276,537 | Best practices for allowing rollback of individual customers on a shared database | Imagine having multiple customers (as an example) on a shared database, and needing a backup system so that a single customer can be rolled back without affecting the other customers. - It's not important whether the customers themselves can order the rollback or only an administrator of sorts, but for a host of reason... | Mimic the transaction system of PostgreSQL: Every affected table has a column [CODE] and [CODE] , type [CODE] . When you update or delete a table, set [CODE] on the old version of the row to the current timestamp rather than actually updating or deleting it. When you update or insert a table, add a new row with [CODE] ... | 0 | 0 | 146 | 2020-10-05T15:54:02.900 | database_errors | dba.stackexchange.com | |
762,737 | Created an httpd server but sample page is not loading | I was given a server to create a test site for our services, this is the first time I been trying to do this so I did a lot of research, finally I found this page which gave great directions, but even after trying all this I can't load my simple index.php page, all I get is a timeout error page I tried to run a debug b... | After further research I figured out that my set up was correct, it was the firewall. Thanks for all the help!. For further information please check this page https://linuxconfig.org/how-to-stop-start-and-disable-enable-firewall-on-redhat-7-linux-system | -4 | 0 | 1,446 | 2016-03-09T21:30:31.213 | infrastructure | serverfault.com | |
156,041 | In a school database, do I need to have repeating data when a student can also be a teacher? | I've seen lots of ERDs of schools, teachers, and all the junction/associative tables. They always have three tables: Teachers Students Associative table betweeen them, maybe subjects of something like that. it is assumed that a teacher cannot be a student and vice-versa. But what if a student can also be a teacher (a n... | What you are saying makes sense, yes. One thing is that you actually can't select students without excluding Persons that are teachers... And even if you did, the students that are also teachers would be missing without further efforts. So maybe it makes sense to have a students table as well to assign Persons that are... | 0 | 2 | 268 | 2016-11-22T16:35:41.433 | warehouse_errors | dba.stackexchange.com | |
210,449 | Can't install Oracle 11g | Error while installing Oracle 11g: Please find the StackTrace of this error. [CODE] [CODE] | Oracle Database 12.1.0.2 is the first version that is certified on Windows 10. Oracle Database 11.2 is not certified on Windows 10. Just click Yes and continue. By the way, the 11.2.0.4 installer does not throw this error on Windows 10. | 0 | 3 | 4,714 | 2018-06-24T08:23:33.673 | database_errors | dba.stackexchange.com | |
227,576 | Getting aggregate sub-values in aggregate query | I have a query that need to show aggregated values in an already aggregated outer query. Consider a query that fetches total count of accounts being credited on a certain day. I would like to display total number orders Total orders that are "PENDING" Total orders that are "OPEN" Here is the query that seems to make se... | [CODE] Explanation: [CODE] is a boolean expression that evaluates to TRUE or FALSE. TRUE is 1; FALSE is 0. Then [CODE] correctly tallies what you asked for. | 0 | 1 | 22 | 2019-01-19T18:40:46.223 | warehouse_errors | dba.stackexchange.com | |
29,877 | halt on error in a sqlplus script | I am deploying pl/sql code using several sql files that are called with [CODE] . If a package got a compilation error the script continues to the end. Is there a way to stop on every compilation error? I tried [CODE] but the script still continues. | This can't be done without some kind of workaround, so here's one for you. You can recompile the PL/SQL after creation & raise an exception if the recompilation fails. This will cause SQL*Plus to exit on failure. For example: test.sql: [CODE] Example: [CODE] | 4 | 5 | 6,120 | 2012-12-05T16:53:37.710 | warehouse_errors | dba.stackexchange.com | |
155,795 | Network Error (tcp_error) | When i browse my website that host on HostGator got following error. Friends from other country said they can browse my site. Is that ISP error? [CODE] | This message looks exactly like the default error messages of a Bluecoat proxy server. So most probably the proxy server that you use can't access the website. To determine a more specific reason you'll need to check (or have checked) the proxy logs. | 2 | 4 | 8,699 | 2010-06-29T04:35:47.343 | infrastructure | serverfault.com | |
153,399 | Why is there a MySQL character encoding issue after database transfer? | I understand that there are probably hundreds of questions here addressing this issue but I haven't really found anything that worked yet. The Scenario I built a site on our staging site using Wordpress. Wordpress now uses utf8mb4 in the newer installations. Knowing this I checked the MySQL version on the live site to ... | Question mark in a black diamond occurs in two cases. See this for details. The black diamonds probably occurred by not setting the connection to be utf8/utf8mb4 when reading the data. To dig further, we need to see some specifics, preferably dumped in hex. If the data was correctly stored into [CODE] in the old system... | 3 | 1 | 4,272 | 2016-10-26T16:52:13.407 | database_errors | dba.stackexchange.com | |
130,218 | How to compare and aggregate data in a table | Is there a way to evaluate data in a table to derive if in a set of ProductIDs a PRODUCTID passed or failed? Here is an example of my data: [CODE] Is it possible to structure a query that returns: [CODE] The conditions are there needs to be 2 PASSED for 2 different LEVELS for a given PRODUCTID. 100 is a 0 because all 4... | This is what I understand... Not sure if this covers all your cases... Let me know if there's any specific case that isn't covered. re-edited: just noticed The conditions are there needs to be 2 PASSED for 2 different LEVELS for a given PRODUCTID. [CODE] | 3 | 0 | 403 | 2016-02-23T17:59:42.187 | warehouse_errors | dba.stackexchange.com | |
422,974 | Test RDWeb Externally Without SSL? | I want to eliminate Logmein costs. Currently, users go through Logmein to access their work desktops from home. I know I can use Remote Desktop Services in Sever 2008 R2 to eliminate this logmein cost and possibly even make it easier for the users. The users only login to their work desktops from home or wherever, on o... | slaps head Doh! I forgot, when testing externally, I can use the external IP in the url. :) I think the ".local" is a barrier when testing externally, maybe I'm wrong, but anyway I was able to make the connection and test externally which is what I wanted to do. Thanks! | 0 | 0 | 1,149 | 2012-08-30T16:55:07.670 | infrastructure | serverfault.com | |
206,150 | best way to monitor web app performance in tomcat | I have a web application running in Tomcat 6.x on a Debian Linux box. I have recently started using Google App Engine for another java app and now have serious stats envy; is there a comparable tool out there for monitoring my tomcat app's performance? The three statistics I would love to see are: Requests per second o... | I think you'll need a mix of tools. The response times taken and hits counts would be analyzed from the access log file by a tool like AwStats which is a quite popular choice. For the memory usage and other stuff like CPU etc, you could install either LambdaProbe or it's fork PSIProbe which will give you details such a... | 3 | 1 | 2,755 | 2010-11-25T22:25:06.030 | pipeline_ops | serverfault.com | |
36,218 | SQL Server 2008 login problem with ASP.NET application: Failed to open the explicitly specified database | I am running SQL Server 2008 Express Edition on Windows Server 2008 with an ASP.NET application which must access the server. The ASP.NET application is associated with an application pool that runs on the [CODE] account. This account in turn has a Login and User record on SQL Server in the required database. When I at... | I would test with an explicit account that I set up on the local computer and put into the IIS app as the anonymous user. That way you can test it from SSMS or VS and be sure that you can connect to the server and database without issue. Once that is working, or if it's not, you can debug where in the ASP side it might... | 4 | 1 | 17,241 | 2009-07-06T07:29:00.743 | database_errors | serverfault.com | |
609,584 | Backup MX server used to queue mail | In short: I need to setup backup MX server, which will queue messages it receives for later delivery through original MX, AND it must only accept messages for mailboxes which will be listed in $some_file . Details : mail system on main mail server - let's say its mx.example.com - is set up like this: LDAP for authentic... | Besides as primary mx, Postfix can be used as backup mx too. It has documentation how to setup one in Configuring Postfix as primary or backup MX host for a remote site . Basically you have two file with the content (1) list of valid domain (e.g. domain of primary mx) and (2) list of valid user (e.g. email address hand... | 3 | 2 | 3,964 | 2014-07-02T14:50:39.607 | api_errors | serverfault.com | |
575,989 | Wheezy processes die periodically | I have a very weird problem. Certain processes on my mail server, but not all, die periodically (every second month or so). A few of the process that die are: ssh dovecot postfix Processes that don't die are: apache2 My system is running (Debian Wheezy): [CODE] I have gone through [CODE] files, but they all seem to be ... | Firstly, your machine is doing something weird at 6:25 AM, every couple of months. I would take a look at ALL cron jobs. Then, if nothing seems bogus, try correlating your problems with your kernel log. Issue [CODE] and look for memory exhaustion problems, in this case the kernel WILL kill processes in order to avoid a... | 3 | 1 | 680 | 2014-02-16T14:13:00.567 | infrastructure | serverfault.com | |
42,817 | Why not Spring framework? | Are there any disadvantages in tying my application to Spring framework? I'm not talking about bugs or issues like that, if any. I'm talking about strategic, architectural things that will influence my application lifecycle. Should I prefer Spring over Java EE core features supported by EE container? What are the advan... | Since other posts here mention the upside, I'll mention the negative aspects of Spring. Even with these negatives, Spring is omnipresent in its niche, reliable, and works as advertised. So, on to the negatives: Enormous: I wouldn't like to put jars with 3000 classes into my little hobby project. There are some descript... | 44 | 43 | 39,154 | 2011-02-02T16:04:30.947 | pipeline_ops | softwareengineering.stackexchange.com | |
584,653 | Owncloud data folder in /home | I've installed an owncloud server to share it with 7 others people. I have set a symbolic link from their data folder to their home (/var/www/owncloud/data/$USER -> /home/$USER/owncloud ). So every user needs to have the rights to write into a www-data folder, but if I add the users into the www-data group, they will b... | With basic permissions, this isn't possible. You'll need to look into setting ACLs to get to where you need to be - and ACLs may only get you partway there. | 1 | 0 | 1,658 | 2014-03-26T14:07:53.700 | infrastructure | serverfault.com | |
1,145,081 | Email client login for the virtual domains setup in postfix dovecot | I have set up a mail server using Postfix and Dovecot. Right now I don't have sasl setup. If I add a user using adduser command and login in to Thunderbird then there is no issue. But now I have also set up virtual domains and I did not setup any password for the virtual domains. how can I log in to thunderbird using t... | To log into virtual users through dovecot you need to enable some form of authentication for them (the system users are enabled by default). Dovecot docs for virtual users: https://doc.dovecot.org/configuration_manual/virtual_users/ After adding the way you want to authenticate them to a file such auth-passwd in conf.d... | 0 | 0 | 43 | 2023-10-04T07:47:23.410 | infrastructure | serverfault.com | |
47,896 | Azure Data Studio opens Jupyter Notebook / Lab HTML | When I start Jupyter Lab or Notebook from the terminal, Azure Data Studio opens the auto-redirect HTML file instead of Firefox. Is there a way to correct this behavior? I'm experiencing this issue on Ubuntu 18.04 on my personal computer, but do not see this behavior on my work computer, which is a Macbook Pro. Currentl... | Changing the file [CODE] with settings to [CODE] fixed the issue. This issue is related to this one where other solutions are also provided (set a default browser for Jupyter). | 0 | 0 | 268 | 2019-03-24T13:12:39.567 | bi_errors | datascience.stackexchange.com | |
694,123 | Link containers on cockpit | I think this is a pretty common scenario, but I don't seem to find a solution. Given: 1. A container with an application that requires a database, 2. A database container; I need to link those containers so the application uses the database. I have fedora server, and using cockpit for managing images/containers is real... | This was introduced on a recent version of cockpit, Fedora 21 ships an old version. Manually installing a new version of cockpit fixed the issue. | -2 | 2 | 277 | 2015-05-24T17:56:52.460 | pipeline_ops | serverfault.com | |
226,279 | slow query logging in mysql server | I have installed MySQL Community Edition 5.1.41 on a windows 2000 server. In my.ini file I have enabled slow query logging and have redirected the output to a table.I have set the long_query_time to 10 seconds. Then after running some queries I checked up the slow query log table and found that all the queries which we... | For starters, I placed these lines in /etc/my.cnf [CODE] When you use the slow log with the log_output being TABLE, the table IS NOT created in /var/lib/mysql. The table is created in the mysql folder, /var/lib/mysql/mysql. The storage engine for the default table-based slow log is CSV. You can check this by doing the ... | 2 | 0 | 1,251 | 2011-01-24T17:35:41.997 | database_errors | serverfault.com | |
1,003,430 | How do I know when a new IBM DB2 Express-C version is released? | How do I know when a new IBM DB2 Express-C version (or security patch) is released? Please, don't suggest following #db2luw ... :) Update: According to this page security patches (called "fix packs") can not be applied with Express-C: DB2 fix packs can not be used with the Free version of DB2 Express-C. If you purchase... | DB2 Express-C has been withdrawn, so this question is no longer relevant. It has been replaced by Db2 11.5 Community License Edition. | 0 | 1 | 411 | 2020-02-17T19:32:46.593 | infrastructure | serverfault.com | |
1,067,402 | docker-compose with nginx and nextcloud FPM stops accepting https connections | I have a fairly standard setup, with nginx as a web frontend (with https certiticates and such) and a nextcloud FPM backend; the whole installation has very low traffic, since I am the only one using it. At one point https stops working, every connection from outside results in either timeout or connection refused; in ... | It seems that the solution is to use restart:always instead of "unless-stopped". I don't really know why I need that since no one is stopping the containers, so they should run indefinitely, like many other containers I have on the same machine that use "unless-stopped" and stay up indefinitely. | 0 | 0 | 965 | 2021-06-22T07:19:33.563 | pipeline_ops | serverfault.com | |
843,704 | How to set environment variables in /etc/sysconfig/httpd in RHEL 7.1 | On my RHEL 7.1 I am running trying to set some environment variables for the IBMs httpd service. The variables are picked up by my httpd.conf to allow me to re-use it for multiple environments. For whatever reason, the sysop didn't install it as a "proper" systemd snippet, so I only have /etc/sysconfig/httpd to work wi... | D'oh I forgot that *nix has very specific rules for how an environment variable can be named. Only A-Z+ numbers + _, so by changing [CODE] to [CODE] everything worked as expected. The error message was what threw me off. By "Assignment" i assumed it mean the problem was on the RIGHT side of the assignment, i.e. the val... | 2 | 3 | 15,135 | 2017-04-10T16:43:16.953 | infrastructure | serverfault.com | |
53,657 | Allocating Filegroups and Storage | I have upto 10 databases running on a single SQL Server instance on a single server. I have read about best practice for storage and concluded the following... 1) Transaction Log on own RAID array (Raid 10) or at least on own physical disk 2) Data files(secondary filegroup) on own disk array (Raid 10 or 5) 3) Indexes o... | I just tried quickly to find an answer because there is a lot here, but this is a common question. Didn't find quite what I wanted yet so a few thoughts to guide you: First : It depends is the default answer here. It really depends on what the performance characteristics are of your system. You should review what your ... | 0 | 1 | 139 | 2013-11-20T20:48:02.480 | database_errors | dba.stackexchange.com | |
105,906 | SSRS - ERROR NUMBER:7357 while passing multiple value parameters using comma delimited string to stored procedure | I am working on a SSRS report to display the logins permissions in a set of databases on a specific server. the server, the logins and the databases are all parameters. NULL shows them all (logins and DBS) server - only 1 - must be specified. The Procedure accepts MULTIPLE parameters, which I pass to the procedure as a... | The problem here is the way the SSRS parameters returns the value : for example when you tried executing the [CODE] stored procedure(I have skipped the @Login parameter in demonstration as its too long): [CODE] The expected format of values in @DBS was : [CODE] but ssrs parameter @DBS returns the multiple values in the... | 4 | 1 | 826 | 2015-07-03T18:26:41.470 | pipeline_ops | dba.stackexchange.com | |
880,398 | yum install local rpm throws error if up to date | When installing rpm packages from local file directory it runs fine the first time [CODE] When the same thing is run the second time as part of automated scripts, it throws an error (exit code 1) [CODE] I can run yum update (exit code 0) [CODE] The problem with this is that update will skip the packages that are not in... | on my system (centos6, centos7) "yum localinstall" will return code 0 even with "Error: Nothing to do" message, while "yum install" returns 1. [CODE] Anyway you can also check the message result to ignore this as a "normal error" in your automation scripts, like for example using bash: [CODE] | 7 | 7 | 7,865 | 2017-10-26T09:37:38.100 | hadoop_errors | serverfault.com | |
274,794 | Power BI report server: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON' when trying to view a report | We have SQL Server 2019 and Power BI Report Server installed on the same host. we're using a virtual service account for Power BI Report Server. We get the following error when trying to view a report: An error has occurred during report processing. (rsProcessingAborted) Cannot create a connection to data source 'DataS... | Not familiar with virtual service accounts, but this is often related to Kerberos authentication. Try using Microsoft® Kerberos Configuration Manager for SQL Server® to see if it can generate the SPNs for you. It's a rather easy to use tool from Microsoft which will detect your SPN settings, and create scripts you can ... | 0 | 2 | 4,349 | 2020-09-01T22:47:47.013 | database_errors | dba.stackexchange.com | |
580,195 | Recover data from ubuntu encrypted drive (LUKS) | I had a Host with Ubuntu 12.10 installed, and the entire harddrive was encrypted (with LUKS it appears), I remember the passphrase, but I have trouble to "open it". I am now on a beta version of Ubuntu 14.04, installed on a new harddrive. the old hard-drive is also still connected. the new drive is sda and the old driv... | After some trial and error, and some more google, I came accross the solution. I think others might enjoy this, so I answer myself: it turns out that the drive is a LVM ( http://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux) ) so, to fix this I do the following: install LVM (this is for ubuntu) [CODE] scan the di... | 2 | 3 | 5,864 | 2014-03-06T07:30:12.387 | infrastructure | serverfault.com | |
250,875 | Conditional selection in FROM clause | I have two tables: [CODE] with columns [CODE] (pkey) and [CODE] ; [CODE] with columns [CODE] (pkey), [CODE] and [CODE] . There are additional columns, but I did not list them here as they are not really relevant. I want to select the periods as following: If the [CODE] matches some predicate, then pick [CODE] . If not,... | The following queries evaluate the expensive predicate just once for each [CODE] row. To achieve this, the predicate is evaluated in a separate subquery. The first version uses a lateral join, the second an inner join. This meets the requirements from the question. [CODE] [CODE] | 4 | 1 | 390 | 2019-10-11T18:01:32.987 | warehouse_errors | dba.stackexchange.com | |
115,622 | Moving database from one server to another | I have a virtual machine running SQL Server 2012 in Azure and have also generated a script of my database to be run on the [CODE] VM on Azure, however I am getting an error "C:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\DATA\PXDEV.mdf" failed with the operating system error 3 (The system cannot find... | Are you getting the error on the destination server? Is the path present on the destination server? You need to make sure that the paths defined in your CREATE DATABASE script exist on the destination server or you need to create them there. | 2 | 1 | 111 | 2015-09-21T08:49:33.413 | database_errors | dba.stackexchange.com | |
93,672 | SSRS: Line Chart, Grouping by Day | I have a fairly specific set of data I am trying to display. I have a dataset of helpdesk ticket data. I would like to display a line chart that shows tickets opened and tickets closed by day, over the last 30 days. I've been able to display one of these just fine, by adding an expression to my Category group: [CODE] T... | Since I can't see your table structure and I don't know the size of your data, here's something that will return the right answer but may or may not need to be tweaked for performance. You can write a query that groups both created and closed tickets together by date. Although you could just write two queries and do a ... | 2 | 3 | 4,329 | 2015-02-24T16:03:15.533 | bi_errors | dba.stackexchange.com | |
159,390 | Linux: disallowing access to a network when the user has a static-defined IP address | In my network I run dhcpd3 set up to assign IP addresses only to specific MAC addresses. It works wonderfully, I even integrated it with bind9 to automatically create direct and reverse DNS hostnames with a custom TLD and all. But one thing I haven't figured out yet: if the user sets up a static IP on his machine he wi... | You can't do that at the IP level; if the user configures his computer to have a valid address/mask, it will be able to access your network. The only option here is filtering the access at the MAC level, thus allowing only Ethernet cards belonging to computers (or devices) you trust. 802.1x is really the best solution ... | 3 | 4 | 817 | 2010-07-11T16:45:06.380 | data_quality | serverfault.com | |
975,262 | Cannot upgrade Debian Jessie to Stable because of deb.sury PHP PPA | I'm attempting to upgrade my Linode Jessie instance to Stable by following this tutorial . I've upgraded my [CODE] file, and am up to the [CODE] step. When I enter that command, I get the following: [CODE] My aforementioned [CODE] file is: [CODE] Doing some research on PPAs, I also updated my `/etc/apt/sources.list.d/p... | You are just missing the signing keys; the packages in the new release are signed using new keys. You can get the keys from a key server and save them as new files in [CODE] : [CODE] If the permissions of those files are something else, change them to [CODE] using: [CODE] The keys should now be listed in the output of ... | 1 | 3 | 4,730 | 2019-07-15T01:10:22.243 | infrastructure | serverfault.com | |
85,872 | Possible to use a Trigger as failsafe for insert in two databases? | (This is for a project on MSSQL 2008R2 Server) I have been tasked with splitting a table into an internal (same db as before) and an external one (different server). Currently the idea is to read only from the external table and to insert into the external table IF possible. If the external is unreachable the inserts a... | After a lot of try and error I can't seem to be able to contain critical error in the try. The big problem here is that performing the remote insert inside the trigger involves a distributed transaction. Triggers execute inside the transaction of the calling statement; in this case, the transaction is the auto-commit t... | 1 | 2 | 1,270 | 2014-12-11T08:49:53.253 | database_errors | dba.stackexchange.com | |
1,094,538 | The tmpfs size seems to be allocated abnormally | I am running WordPress on a vps server with 2 cores and 4 gigabytes of RAM. On the server I installed Ubuntu 20.04 + Nginx + Php7.4 + mariadb. And I recently saw an article about fastcgi and changed the path where the cache file is saved from ssd to memory. [CODE] However, when I check with the df -h command on my serv... | This is the maximum amount of memory that can be used by the tmpfs. It defaults to half of available RAM. | 0 | 1 | 166 | 2022-02-23T08:25:31.893 | database_errors | serverfault.com | |
328,739 | VMware Data Recovery always fails with error -3902 | Setup Using vCenter and ESX 4.1, we installed VMware Data Recovery 2.0 using two appliances. Once appliance has a single 1TB (892GB free) destination on a mapped raw iSCSI LUN. The other appliance has two 500GB (440 and 450GB free) destinations on CIFS shares to two Windows 2003 servers. The virtual machines to be back... | I strongly suggest you engage VMWare directly. You might also post this on the VMWare Community Boards for a response. | 0 | 0 | 335 | 2011-11-08T04:34:03.437 | database_errors | serverfault.com | |
882,947 | Configuring iptables to let Docker containers access out | I've got a CentOS server running Docker and I'm trying to secure it using iptables. And I can't work out how to let containers access the internet, without their ports being accessible from outside. I've stopped Docker messing with my iptables using the '--iptables=false' command and am now struggling to configure ipta... | The solution which I found, which seems to provide what I want is: [CODE] This seems to allow Communication among docker containers Communication from containers to the internet (through eth0 on my server) Communication back in response (related/established) But, access to these ports is not opened to the outside world... | 1 | 2 | 8,088 | 2017-11-11T05:26:20.320 | pipeline_ops | serverfault.com | |
230,873 | How does persistence fit into a purely functional language? | How does the pattern of using command handlers to deal with persistence fit into a purely functional language, where we want to make IO-related code as thin as possible? When implementing Domain-Driven Design in an object-oriented language, it's common to use the Command/Handler pattern to execute state changes. In thi... | The general way to separate components in Haskell is through monad transformer stacks. I explain this in more detail below. Imagine we're building a system that has several large-scale components: a component that talks with the disk or database (submodel) a component that does transformations on our domain (model) a c... | 23 | 8 | 4,230 | 2014-03-01T11:32:06.520 | api_errors | softwareengineering.stackexchange.com | |
398,807 | How would someone record GPU image output? | I notice the GPU, like latest Nvidia/AMD cards, have an output that goes to your monitor but I want to know if we can also use that GPU output feed into some kind of image recorder HARDWARE? If yes, what kind of hardware would I be looking for specifically? I'm currently trying to create an AI algorithm based on some r... | Sounds like you're looking for a capture card. Modern ones based on PCIe or USB3 are capable of capturing HDMI output at 60fps in real time. On the software side, the captured images are exposed as a virtual camera. If you can make your program or algorithm work of a video file or camera input, you should be able to us... | -3 | 0 | 749 | 2019-09-24T05:42:11.040 | api_errors | softwareengineering.stackexchange.com | |
119,192 | Restoring Windows Server 2008 to different hardware - OEM License | Possible Duplicate: Can you help me with my software licensing question? For disaster recovery purposes, i am considering the possibility of using a VM to restore a backup of our Windows Server 2008, or even different hardware as a temporary solution. I imagine a solution like acronis universal restore should do the tr... | This type of question is one reason why we never buy OEM server licenses. I want to be able to move licenses around if necessary. The usual rule for OEM licenses is that if you change the motherboard, it's a different computer and you can't use the license. Here's one article about what hardware changes in XP can requi... | 3 | 5 | 1,769 | 2010-03-04T14:36:58.287 | data_quality | serverfault.com | |
311,171 | More columns vs. more rows to optimize storage and performance? | I have a table with this structure: [CODE] There are 40 tickers (to eventually be extended to around 130) and 8 intervals. New rows (40 * 8) are added every 10 seconds as a bulk copy, which represents 115k rows/hour. They are written once and never modified. Read operations are always done for fairly large time ranges ... | Over time, that's going to be a lot of rows! Basics Yes, storing 8 [CODE] in a single row will beat 8 rows with 1 [CODE] each by a long shot, in storage and performance. But you can do more ... Table design To optimize storage and performance : [CODE] db<>fiddle here - including all Explanation and auxiliaries One entr... | 1 | 3 | 1,616 | 2022-04-20T20:15:52.033 | warehouse_errors | dba.stackexchange.com | |
105,699 | Global (computer-wide) proxy settings from pac file | Our company just changed proxy settings from using one proxy server to a bunch and inserted pac files to IE settings. The problem is, any software that doesn't allow setting proxy script (pac file) explicitly, can't get online any more. I wanted to set proxy settings globally in my system and found that proxycfg is use... | Unfortunately there isn't a global proxy configuration in Windows (outside of Internet Options) that all apps pay attention to. Many apps don't use Internet Options, and many of those that don't don't support proxy autoconfigs. For those that don't you're relinquished to manually configuring them. What app(s) are you l... | 2 | 3 | 3,769 | 2010-01-23T20:32:30.400 | infrastructure | serverfault.com | |
655,623 | How to pipe all log files entries to a database on linux? | I am thinking about building an application that would read my different server log files, save the parsed data to a database, and then remove the line from the log file. This is my programer side trying to think of better ways to get all the log files into a useable/searchable application console I can view multiple s... | Don't reinvent the wheel. Use logstash to get your logs off your systems. Have logstash send the logs to elasticsearch. Use the kibana front end for analytics. This combination is so common it's known as the ELK stack. And it's all open source. | 0 | 3 | 1,289 | 2014-12-31T16:34:26.303 | api_errors | serverfault.com | |
1,045,961 | Nginx - Cross-Origin Request Blocked | We are getting this error: [CODE] In our nginx configuration we have: [CODE] Not sure for the directive and its syntax on how to only allow [CODE] and our own domain. | Inside a [CODE] (with a [CODE] directive for example) you can generate the correct headers dynamically: [CODE] Please ask if you don't understand the regex stuff. You can replace [CODE] with [CODE] if you don't have Ubuntu [CODE] for example. Note the slightly different syntax. This solution is secure enough for that p... | 1 | 0 | 2,536 | 2020-12-12T20:09:57.830 | infrastructure | serverfault.com | |
696,151 | Exchange Error 0x80070057 when downloading address book from Outlook 2013 | I have a few users receiving the following error when attempting to use Send/Receive to download an offline address book from the Exchange Server (on the intranet): Task 'Microsoft Exchange' reported error (0x80070057) : 'Sorry, something went wrong. You may want to try again.' Other Outlook 2013 users do not have issu... | I resolved the issue and I'll post the solution in case anyone is looking here in the future: We have two mailbox databases that house our mailboxes. The users that were not able to sync their address books were all on the same database. That mailbox database was pointing to an Offline Address Book that was not serving... | 1 | 1 | 10,611 | 2015-06-02T17:23:59.127 | infrastructure | serverfault.com | |
232,789 | How can I find who or what deleted files in the system32 directory? | We have a Windows 2003 development server (IIS and SQL Server) with remote desktop access and some employees have admin rights. A couple weeks ago, a lot of important files (dlls, exes, msc and other stuff) disappeared from the system32 directory. The server is barely running (lots of errors!!!) and we are currently se... | The only way to catch this kind of stuff is to have file-level auditing already in place . After the fact, you can't find out. That kind of auditing is horrendously spammy and pretty much requires some kind of third party log aggregation/analysis engine. | 0 | 5 | 187 | 2011-02-08T16:55:14.220 | database_errors | serverfault.com | |
71,565 | How to connect MacOS X Snow Leopard to a Windows Server 2008 VPN? | My Windows PC can connect without problems to a Windows Server 2008 VPN at my office. Everything works. I set up the same VPN in my Mac with Snow Leopard. It connects, but I can't access any remote computer inside office's VPN. I have played with some VPN settings, but without success. Thanks. | already tried to use the IP address of the server? double checked routing settings on your mac? tried to check the "send all traffic over VNP" remote IP address range conflicts with the local one? (routing problems again) | 4 | 1 | 1,794 | 2009-10-06T00:36:09.350 | infrastructure | serverfault.com | |
132,325 | Is the Cloud ready for an Enterprise Java web application? Seeking a JEE hosting advice | Greetings to all the smart people around here! I'd like to ask whether it is feasible or a good idea at all to deploy a Java enterprise web application to a Cloud such as Amazon EC2. More exactly, I'm looking for infrastructure options for an application that shall handle few hundred users with long but neither CPU nor... | In the long term EC2 is rarely more cost effective than dedicated servers of your own. It's main advantage is in rapid scalability. If you have a relatively slow changing userbase then it is probably not worth it. But the great thing is that it is easy to set something up and try it out for just a handful of $, without... | 4 | 1 | 1,245 | 2010-04-14T14:43:12.623 | database_errors | serverfault.com | |
932,402 | EC2 capped HTTPS upload | I have an application on 2 EC2 instances sitting behind an ELB. The ELB does HTTPS termination and then speaks HTTP to the instances. When uploading via HTTPS the transfer seems to be capped at ~ 10 Mbps per file (ex. 2 files will upload at 20 Mbps, 3 at 30 Mbps and so on) whereas if I transfer via HTTP I can easily sa... | I guess ELB is designed for horizontal scalability, not necessarily for high single-stream throughput. That's what you observed as well - many concurrent streams are all performing well but each single one is capped at some max throughput. If you want to speed up upload to AWS have a look at S3 Transfer Acceleration - ... | 1 | 1 | 666 | 2018-09-24T16:51:45.433 | infrastructure | serverfault.com | |
32,576 | What are best practices regarding multiple JVMs on a server? | Many third party products require a specific version of the JRE or JDK and many of our servers have multiple duties. Application teams argue they should not care where Java is installed. Most of the applications simply rely on environment variables (or whatever Java happens to be lying around) but those teams needing s... | Ideally you need to set two environment variables: [CODE] You can either create different scripts to start the various programs and set these variables differently in each case. Or you can configure each application to start under a different user account and set these variables in the users appropriate startup script.... | 2 | 2 | 9,884 | 2009-03-30T03:28:58.083 | infrastructure | serverfault.com | |
171,610 | Setup mail notifications on SQL Server (severe) errors | I want to be notified by email whenever an error occurs on our production database (e.g. failed database backups, engine crashes due to corruption etc) . I could not find built-in support for this, so I wrote my own stored procedure that runs every 5 minutes. My stored procedure takes the following steps: Store the res... | If the SQL Agent Service is not running I'm not getting notified about errors.Therefore I'm wondering, there must be a better way to do what I want? Few options 1. Monitor from different server [CODE] 2.Use a Third Party Monitoring service like SQLSentry Also i don't see a reason why you need to Parse SQL error log .SQ... | 0 | 1 | 204 | 2017-04-21T09:08:06.790 | database_errors | dba.stackexchange.com | |
69,165 | Keeping bank transactions in sync | I'm counting on your expertise in this one, I'm developing a scrapper for banking transactions history. My problem is, scrapping should be done regularly and the bank doesn't supply any unique identification field for each transaction, thus I need to find a way of not importing already imported data.. I can't greedly i... | It probably isn't possible to do this robustly. If your previous sequence ends in: [CODE] and the next sequence begins with: [CODE] is that the same transaction as before? Or is the data really: [CODE] so you should import two transactions? Without a timestamp, some useful unique transaction identifier, or the ability ... | 0 | 0 | 313 | 2014-06-26T23:58:10.293 | database_errors | dba.stackexchange.com | |
932,544 | EC2 Instance Freezes | I am experiencing sudden freezes in one particular instance. Here some details of the instance: Type: t2.micro Region/av. zone: us-west-2b OS: amzn-ami-hvm-2018.03.0.20180811-x86_64-gp2 (ami-a0cfeed8) My this Ec2 instance freezes automatically. I have docker installed in the instance. I am new in this field. don't have... | Couple of options: Use a larger size , e.g. [CODE] or [CODE] - if the freezing goes away it may be memory-related. Examine CPU Credits usage - if it "freezes" when the CPU credits go low you're overloading the instance. Use a larger one. Examine the OS logs - in [CODE] . There may be some clues about memory or other pr... | 6 | 7 | 18,145 | 2018-09-25T12:59:22.520 | pipeline_ops | serverfault.com | |
316,913 | Install PECL mailparse on XAMPP? | Similar to Is it possible to install Mailparse extension via PECL installation - without recompiling PHP I'm trying to install mailparse on xampp. XAMPP actually has a guide for this, and I've tried to follow along. http://wiki.cerb4.com/wiki/Installing_on_XAMPP_MacOSX I've got the latest version (1.7.3) via the XAMPP ... | This guide describes installing OAuth. Installing PECL should be very similar. http://www.sumardi.net/2011/06/04/installing-oauth-extension-in-xampp-for-mac-os-x/ | 2 | 1 | 2,408 | 2011-09-29T17:03:46.513 | infrastructure | serverfault.com | |
12,951 | Why is it necessary to have virtual machines to run multiple server instances? | I'm trying to learn about virtualization and containers. In an educational video it is said that the introduction of virtual machines was a big deal because it made companies available to run multiple server instances on the same machine, so they did not have to necessarily buy a new machine just to run a new instance.... | Multiple apps on the same server But what if I have a Node.js server application? I could run multiple of those on the same machine without any kind of virtualization. Yes, you can run multiple apps or multiple instances of the same app on a server. The problem is that these apps will interfere . Some examples of resou... | 2 | 3 | 1,100 | 2020-12-09T19:54:28.667 | pipeline_ops | devops.stackexchange.com | |
98,064 | Aggregate all joined rows with where clause | Three nested tables exist: user_groups, users, projects. Each user_group has many users and, in turn, each user has many projects. Each project has an ordinal assigned, 1-5 (step_number). I would like to provide a summary for each user group. Each user group summary should include the users' projects and their unique p... | If I understand your requirements, this consists of selecting all the users that have a project in step 3, and using that list to select all the projects for just those users. Something like: [CODE] | 2 | 2 | 118 | 2015-04-16T17:15:46.957 | warehouse_errors | dba.stackexchange.com | |
182,390 | How do I set up Windows 7 computers in a phased approach using a KMS key? | I am a network administrator at my place of employment and we are getting ready for deploying Windows 7 Enterprise and Office 2010 Professional Plus in our organization. We are wanting to use a KMS host and key to activate the majority of our computers and reserve our MAK key for computers that won't be connected to th... | You are correct in that you need 25 machines before the KMS server will work. But this 25 includes Windows 2008 and Windows 2008 R2 servers as well. You can use your MAK key, but after a certain number of activations (it will show you how many on the licensing site) it won't activate automatically any more and you'll h... | 0 | 1 | 245 | 2010-09-17T20:57:36.080 | infrastructure | serverfault.com | |
259,338 | Accessing old version of referenced table in trigger function - Postgresql | In my database I have a table named "layer" and a table named "grouplayer". The table "layer" is referencing the table "grouplayer" by a foreign key constraint with Cascade DELETE. I have added a trigger function to the table "layer" which is getting the value of another column of the table "grouplayer" by a SELECT que... | I didn't look at the code, but obviously the row is deleted from [CODE] before the [CODE] trigger on [CODE] is executed. Perhaps you can perform the task in a [CODE] trigger on [CODE] . | 2 | 0 | 226 | 2020-02-10T16:26:35.747 | data_quality | dba.stackexchange.com | |
111,691 | What metrics do you use on your Scrum project? | We are starting a new project and the board/stakeholders are asking for metrics to check the team performance. As a junior ScrumMaster I told them: about the Velocity and BurndownChart that we can chose any type of metrics as long as they are team based and not individual, they do not push people to act awkwardly / cou... | Not all necessarily "Scrum Specific" but keep in mind Scrum is a framework, and not a substitute for good Project Management practice :-) I'd suggest: Features added/demo'ed since last report - Very compelling to tell stakeholders what is already part of the product! Defects that "slip" out of the iteration - this is t... | 6 | 2 | 1,134 | 2011-09-30T14:47:19.330 | api_errors | softwareengineering.stackexchange.com | |
1,064,957 | Nginx reverse proxy to a node express fullstack app not working | I have a fullstack node express which serve static files and the api running on port 5000. my nginx config is : [CODE] I can load the index.html at [CODE] but the css and js from this file failed to be loaded. If I try to access some of the api, eg: [CODE] , it's working. I've read countless stackoverflow posts and goo... | Most likely your site URL is not set correctly in your application. I don't see any point to serve static assets via your backend application. You don't get practically any benefit from having nginx in the front... | 0 | 0 | 909 | 2021-05-28T10:11:19.390 | api_errors | serverfault.com | |
829,980 | What's the point of an SMTP session size limit? | As a receiving SMTP server, a maximum message size makes sense. A huge message takes up space after it is received. A full disk makes users unhappy. A maximum number of messages per sender in a fixed time period makes sense, especially if combined with other spam indicators. Spam makes users unhappy too. I'm currently ... | From the small information I seen from Microsoft, see below quote, I think it was to prevent a loop when a mail client send a mail in a session, the mail is refused during the session and then the mail client retry to send. (thus making a loop) Select the Limit session size to (KB) check box, and then type a value to i... | 1 | 2 | 8,403 | 2017-02-01T20:03:05.237 | infrastructure | serverfault.com | |
43,567 | Data Center Automation tools and Novell Suse Linux? | I'm looking for info to automate the patching/updating process for several hundred Suse machines. Apart from Zenworks and SMT is there other patch management/automation tools you know with good support on Novell SLES OS? I found several tools but mainly for Windows... Do you have any experience with the following tools... | As you have HP server and you mention HP datacenter. The tool who do that for HP is Server Automation, it's support Suse 9 and 10 for : OS provisioning patching application deployment audit and compliance inventory It's also able to integrate with iLo to automate OS provisioning. | 3 | 2 | 1,189 | 2009-07-21T14:59:53.413 | infrastructure | serverfault.com | |
842,979 | iptables can't make http/https connection | I am trying to configure a firewall with IPTables, the firewall sits in between the LAN and Web server. I want to allow the LAN to access the website the website on the webserver. But the Web server mustn't be able to initate connections with the LAN. I am using the following rules but i can not make a connection. Webs... | If you want to allow returned packets from web server towards your LAN clients, you need to change the second rule: [CODE] When response is returned, the ports 80, 443 are the source port not destination ports. A good practice is to allow [CODE] , [CODE] traffic without any other restrictions (source, or destination) l... | 0 | 3 | 1,182 | 2017-04-06T10:53:14.563 | infrastructure | serverfault.com | |
266,040 | SAN I/O is horrible | I've been testing a SAN with fibre channel disks and I get 500MBPS Writes 200MBPS sequential reads and about 5MBPS randon reads / 1000 IOps max. Any idea why reads are so much slower? It is a 3PAR SAN attached using fibre channel switches. Seems we only had 24 Fiber drives, rated for 200 iops and they were overloading ... | Without more details this is tough to answer. 2 things that come to mind are: the 3par is rebalancing the lun someone else is using the san 2 is the most likely scenario. Remember that the 3par, by default, shares all disks across all luns (much like the HP EVA). This means that one application or server could bring yo... | 0 | 4 | 1,759 | 2011-05-04T03:52:12.237 | api_errors | serverfault.com | |
422,396 | What can go wrong with a GLIBC upgrade? | I recently installed a piece of software that my group needs for a research project starting next September. Turns out the software has a known crash bug when used with glibc 2.12.1. My boss asked if we can upgrade glibc on the server that's supposed to run it. Cue my skeptical silence.... At some point, I got it into ... | It is often possible to compile up a fresher libc, and have one piece of software use a different library to everyone else. The biggest painpoint between libc versions is thread local storage, IIRC. If you're passing this milestone, all bets are off. Having said all that - I would strongly recommend that you simply upg... | 9 | 5 | 4,639 | 2012-08-28T17:24:10.740 | infrastructure | serverfault.com | |
75,909 | forloop for a-z | I need to alter a database by a simple pattern. An value starting with [CODE] get turned into '/a/a/aa', and [CODE] get turned into '/a/b/ab', and [CODE] get turned into '/b/a/ba' and so on [CODE] and [CODE] . This is what I have working for the appending part [CODE] but to make it work I need to run them one at a time... | You can do it with a single [CODE] statement. We'll need a small table first: [CODE] And another one to hold our patterns. We don't really need this one (it could be created on the fly but there is no harm having it made and pre-filled with the patterns, It's only 36^2 rows anyway and the procedure more clear I think: ... | 0 | 0 | 83 | 2014-09-07T01:47:13.710 | database_errors | dba.stackexchange.com | |
50,242 | Which device should I use as DHCP server? | In our administrative building we have a network with around 150 workstations. Till now I used fixed IP address giving the specific department one range in same address. Etc in marketing I had 192.168.1.2 X , in sales 192.168.1.3 X , servers are with 192.168.1.20 X . Now things are getting knotty as the number of works... | My condolences to you for having to deal with static IP addresses in a network that large. When students asked me "How big would a network have to be before you started using DHCP?" my answer was always "One client computer or more." I love DHCP. It makes my life easier and makes for better documentation quality. I con... | 6 | 11 | 14,007 | 2009-08-05T09:27:54.183 | infrastructure | serverfault.com | |
883,639 | Can't find IIS config file listed by appcmd | I'm managing a bunch of IIS 8.5 servers and I'm working on complying with security baselines. My question is this: If I run a specific [CODE] query on one of our IIS servers, I get the following: [CODE] What I need to do is find the actual configuration file that [CODE] is reading from here, so I can update the relevan... | Check: [CODE] System.web is a dot.NET setting, so it should be in the global web.config file, it seems it is only in the 64bit version, not the 32bit framework. | 5 | 3 | 1,344 | 2017-11-15T20:14:06.047 | infrastructure | serverfault.com | |
551,016 | Apache Proxy HTTP CONNECT method enabled | I'm using Apache as reverse proxy for several different projects. PCI-DSS compliance scanning shows that my Apache is having HTTP CONNECT method enabled. as stated on Acunetix's site - http://www.acunetix.com/vulnerabilities/apache-proxy-http-connect-metho/ As far as I know, CONNECT is used by the web server to tunnel ... | You only need to allow the CONNECT method when you use a forward proxy configuration, in a reverse proxy configuration you won't even need to enable the connect method. Apache should be configured to function as the "man-in-the-middle" if you will. Or called a SSL offloader of SSL termination point since the config is ... | 4 | 4 | 18,031 | 2013-11-06T08:23:47.573 | infrastructure | serverfault.com | |
300,388 | Trojan of Web-server | Possible Duplicate: My server's been hacked EMERGENCY In our web-server most of the sites are infected with this JS-Downloader Trojan. It injected the following code. I've tried to clean up the server with "linux malware detector" and ClamAV, but both of them failed to clean it up. Any suggestion how to clean this up? ... | " " and some other characters you have used are control characters in sed and must be escaped. Try something like this for the sed expression, it might work better : [CODE] | 0 | 1 | 170 | 2011-08-12T04:32:36.230 | data_quality | serverfault.com | |
1,048,536 | SLES 15 zypper and yast error | I've created a predefined SLES 15.1 Linux VM on GCP. SUSEConnect, zypper and yast functionalites don't work. I always have the error: "11-Resource temporarily unavailable" For example, I run the command: [CODE] Result: [CODE] Please, can some one help me to solve this issue? I need to install some extra packages in thi... | This is because of the lxml configuration file with version 4.4.2. So uninstall and install the newer version 4.6.2 and re-register using the below commands. [CODE] Hope this helps. | 0 | 0 | 3,742 | 2021-01-04T16:52:37.357 | infrastructure | serverfault.com | |
1,012,438 | Which firewall port required to access python repository? | Trying to install python library from corporate Server. Due to security reason the internet is blocked and specific URL's only allowed. So would like to raise a firewall opening to install python lib using pip install. Do anyone know which ports are required to access library using pip ? or any other better solution to... | https://pypi.org/project/paramiko/ - communicates only via 443 port, but for installation the following URI is used - https://api.github.com/repos/paramiko/paramiko Check, if it is blocked by firewall EDIT: screenshot for second lib as asked | 3 | 3 | 10,648 | 2020-04-15T14:22:35.567 | infrastructure | serverfault.com | |
7,546 | SQL 2008 Merge Replication and table-level data compression | What would happen if you enable data compression (either row or page-level) on a replicated table (merge replication) where the publisher is SQL 2008 Enterprise (Supports data compression) and the subscriber was SQL 2008 Standard (does not support data compression). Would the compression attribute get politely dropped ... | It will fail if you try to save replicate including compression, but if you set it to only "replicate the partition scheme but not compress the data on the Subscriber." The Distribution Agent does not check for down-level Subscribers when it applies scripts. If the replication of compression is selected, creating the t... | 5 | 4 | 679 | 2011-11-02T20:16:00.340 | database_errors | dba.stackexchange.com | |
540,742 | Access Server 2003 formatted HDD from W7 installation | I have a server problem, not sure what the best approach may be. The scenario is this: OS: Server 2003 The OS was on dedicated IDE drive; there are 2x1TB SATA drives which were in a Windows software RAID1, formatted to NTFS. The dedicated drive crashed, the kind of crash where you can hear rw heads scraping the platter... | After much wailing and gnashing of teeth it turns out the drives needed to be imported as foreign content (in disk management). In hindsite the solution was relatively simple, but most problems are when you know the solution :) Thanks for the input, it led me to the cure. | -1 | 0 | 51 | 2013-09-21T21:56:59.863 | infrastructure | serverfault.com | |
645,440 | TCP Load balancing | I need to implement an architecture that can serve 3 million GPS Devices sending Location Updates/Alerts (every 10 secs) to our system for processing. Features: 1) TCP communication. 1) Long lived connections(~12 hrs a day). Change only when their IP Address gets changed. 2) GPRS communication. 3) Simple parsing of dat... | I can't speak for the specific designs of either of the two solutions you are considering. I can however explain a design, which could be implemented in software and could scale to millions of TCP connections on a single IP if deployed on a sufficient number of standard machines. First of all the IP address can be anyc... | 0 | 0 | 1,038 | 2014-11-19T10:38:33.647 | infrastructure | serverfault.com | |
544,416 | Windows Server Backup crashing | Environment: I'm running an HP DL165 G7, with Windows 2008 R2 x64. Recently, when I perform a backup with "Windows Server Backup", it will crash the system. I run the backup over the weekend. When I come in on Monday, it has the screen shows a BSOD. (I will try to get the info from BSOD). I have to hold the power butto... | http://www.itexperience.net/2011/09/02/vss-error-failed-resolving-account-administrator-with-status-1376/ this link showed how to do it. it's registry change. go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VSS\VssAccessControl Find the account that is shown (in the event log error) and delete that entry. I ... | 3 | 1 | 6,156 | 2013-10-07T18:50:20.180 | database_errors | serverfault.com | |
537,964 | SSL Library Error: X509_check_private_key:key values mismatch | I installed a new SSL certificate signed by our own Certificate Authority. Apache will not start, with the error: SSL Library Error: 185073780 error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch I have verified the key and cert Do match, so the error message is wrong. I have tred with an... | I had more than one vhost file with SSL enabled. The second host I didn't care about matching the domain because it was for private use. If you have more than one vhost with ssl on a single IP, you have to update the certificates in all of them at the same time, apparently. | 2 | 2 | 8,402 | 2013-09-11T03:06:17.540 | api_errors | serverfault.com | |
232,222 | Install Ubuntu 10.04 (Paravirtualization) on CentOS 5 using Xen | Anyone got instructions on how to install Ubutnu 10.04 (Paravirtualization) on CentOS 5 using Xen? I was able to install using netboot: http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/ Finished the installation but failed to bootup, anyone can help? Detail: [CODE] | I found some howtos, try to check it out, maybe it will help you http://drup.org/how-install-ubuntu-vm-under-centosred-hat-xen and the second one http://dev.osso.nl/herman/blog/2006/12/24/ubuntu-bootmenu-too-shiny-for-xen-with-hvm/ (it;s a little bit old but maybe will tell you more). Executing this command [CODE] shou... | 0 | 0 | 1,369 | 2011-02-07T16:07:29.833 | hadoop_errors | serverfault.com | |
56,304 | Replace a materialized view in Postgres | I have a materialized view in [CODE] that I'd like to update with new columns. However, other materialized views also depend upon this view, and the error message indicates that dropping a view isn't possible when other objects depend on it. ERROR: cannot drop materialized view latest_charges because other objects depe... | As of PostgreSQL 9.4: Different to the documentation of CREATE VIEW , the documentation of CREATE MATERIALIZED VIEW does NOT mention the REPLACE keyword. There seems to be no shortcut aside from dropping all dependent objects and rebuilding each one. When you do so, I can only recommend two small things: Use DROP MATER... | 45 | 35 | 48,126 | 2014-01-07T19:35:45.737 | warehouse_errors | dba.stackexchange.com | |
277,994 | Second Mainline Branch to Abandon Source Control Misuse? | I just learned about Source Control this week and came to the realization that my team uses it plain wrong. One mainline to commit code to live. No other branches; that's it. Branching features turned off for everyone except administrator People create manual file backups and leave them littered around, because no bran... | There's no need to start a new repository, just start branching. Give leaders permission to merge onto trunk, everyone else must create a branch and commit their work there. the only extra complication is having to create a branch (per ticket, recommended) and switch their working copy to the branch rather than trunk. ... | 1 | 3 | 115 | 2015-04-01T14:24:00.817 | database_errors | softwareengineering.stackexchange.com | |
237,387 | How should I handle exception that *should* never be thrown? | What is the best way to handle errors that shouldn't ever happen? My current way to do this is to throw an exception if the 'thing that shouldn't happen' does happen, like so: [CODE] This is somewhat pointless, because this should never happen . But just in case the code gets screwed up and is released into production ... | It's amazing how often things that should never happen do. You should throw a RuntimeException with a descriptive error message and let the application crash. If that ever happens, then you know that something is deeply wrong. | 11 | 17 | 13,169 | 2014-04-29T13:36:36.907 | api_errors | softwareengineering.stackexchange.com | |
40,843 | What the good general regression technqiue for a problem with 50 independent varaibles | I am a newbie to data science and statistics. I came across this problem, which has 50 independent variables and one dependent variable and trying to identify the good regression technique to start with. The following is the flow chart that I executed: Data Exploration -> Correlational matrix -> dimension reduction -> ... | In no way is this going to be an exhaustive answer, but it will definitely give you a starting point in [CODE] - Data Exploration Start with [CODE] . It will give you HTML reports of your variables. If the quality of the data is good, it will provide some insights into the fill rate, depending upon the variable type so... | 1 | 3 | 60 | 2018-11-07T04:10:55.010 | data_quality | datascience.stackexchange.com | |
76,982 | Where is the DNS Cache located? (Server 2003) | I currently setup my network to do all DNS through our 2003 Server, and now that there is a Cache, I'd like to pull some reports on it. I am a .NET developer and my idea is to parse a file and dump it into SQL Server. The problem is that I don't know where Server stores the Cache. Can anyone lead me in the right direct... | I believe it is all in memory. I know you can use the dnscmd to dump the cache with a command like this: [CODE] You can view the contents of the with the DNS MMC. From the View menu make sure the 'Advanced' option is checked. You can then click on a server and under that will be a folder named 'Cached Lookups'. There w... | 2 | 2 | 9,903 | 2009-10-21T22:22:56.800 | database_errors | serverfault.com | |
63,467 | Managing NaN in target variables (testing) | Please can someone advise me on how to handle NaN in my target variables set? I've tried a variety of things but none is working. Here's what I've tried: Imputing zeros (0) in Y_test Replacing NaN with whitespace in the Y_test Emptying the Y_test The dataset came already separated as training and test set. When I apply... | Well, you can't do supervised learning on unlabeled data. Either you discard those records or you have to go semi-supervised way. | 1 | 1 | 1,643 | 2019-11-20T13:30:23.247 | data_quality | datascience.stackexchange.com | |
191,660 | Requiring Explicit Null Reference Handling | One of the problems I have with null references is that they may not be exceptional. In my current position, there are few requirements and you are lucky if conventions are followed. This means being unable to handle a request is a frequent occurrence and throwing an exception is too slow (think millions of requests). ... | You don't need it. Here's my reasoning: You may be underestimating the consumers of your API. Every textbook I ever read on programming languages contained a section on how to check for null values. Many languages include null coalescing or null checking features + syntactic sugar. You need to prove to me (another prog... | 5 | 4 | 2,070 | 2013-03-23T04:37:57.703 | data_quality | softwareengineering.stackexchange.com | |
697,902 | WatchGuard Port Forwarding / Static NAT | I'm trying to forward a specific port on my WatchGuard firewall to an internal host in a specific VLAN. My setup is roughly as follows: [CODE] I've setup a SNAT rule from [CODE] to the IP address of the internal server without port translation. Then, I added a firewall policy with Action: Allow a custom filter on port ... | Turns out that my ISP has provided two IP addresses to the connection (without noticing me) and that I was talking to the wrong one all along. The management-port was bound to all interfaces (therefore it was open), but the bound external port was not. Note to self: double check IPs. with shoutouts to @B.Z. for rubberd... | 2 | 1 | 5,634 | 2015-06-10T09:59:21.263 | infrastructure | serverfault.com | |
550,992 | Can the "harm your local or remote computer" warning be eliminated? | I have a Server 2012 RD farm which is used exclusively for sessions - not remote apps. It's working well except for some login concerns. One in particular is a warning that remote clients get when logging in: This remote connection could harm your local or remote computer. Make sure that you trust the publisher before ... | Turns out it was one of those simple little things overlooked. When you first open the RD Web site, you get a log-in page that looks something like this: It so turns out that if the "Security" option is set to "This is a public or shared computer," that a certain check-box gets omitted from the dialog shown in the ques... | 1 | 1 | 3,042 | 2013-11-06T04:55:55.563 | infrastructure | serverfault.com | |
364,972 | Can I run MySQL and Postgresql together on a VPS? | I'd like to know if anybody has any experience with this. I have a VPS server with ruby On rails, nginx and pgsql. I'd like to use Wordpress on it too, and the biggest issue seems to be running it on postgresql. So, do you think I can run two databases on one VPS, considering the VPS is 512MB and the sites are not very... | I have a customer server (Ubuntu 10.04, 64 Bit) with Postgres and MySQL running at the same time. It is very important that you configure both database servers accordingly to your RAM. The server I am using is equipped with 4 GB RAM, which causes Ubuntu to use the SWAP from time to time. 512 MB RAM for all your applica... | 0 | 4 | 3,407 | 2012-02-29T10:15:44.300 | database_errors | serverfault.com | |
69,901 | MySQL (or MariaDB) multi-master without MMM | I've been reading blogs on MySQL multi-master setup. The way I've used MySQL replication in the past was master-slave where if the master died (or was being taken down for maintenance) we would shut down the master, promote the slave to master, point the configs to the old slave, and do our work. The new master would t... | The biggest caveat with only 2 machines in a cluster is the possibility of "split-brain", in which the nodes lose communication with one another, and each assumes that they are now the Master, possibly getting out of sync with the other. This risk is mitigated if you can absolutely ensure that writes will not go to the... | 2 | 1 | 1,467 | 2014-07-07T21:29:49.740 | database_errors | dba.stackexchange.com | |
166,099 | Startup script for Red5 on Ubuntu 9.04 | I am creating startup script for Red5 on Ubuntu. Red5 is installed in /opt/red5 Following is a working script on a CentOS Box on which Red5 is running [code] ==========Start init script ========== [CODE] [/code] What do I need to replace for Ubuntu in the above script. My Red5 is in /opt/red5/ and to start it manually ... | The file you probably want is [CODE] . You say you checked that file. What do you mean? Did you try using it in place of [CODE] in that line in the startup script? Did you get any error messages in the logs? You should try modeling your script after other scripts in [CODE] . | 1 | 1 | 2,216 | 2010-08-01T19:16:40.073 | infrastructure | serverfault.com | |
806,879 | AddHandler for PHP with different file extension | I'm trying to configure a hosted Apache server, via [CODE] , to execute files with [CODE] extension with PHP. But I don't know what the correct [CODE] for [CODE] is. The reason is that we have a flash app that is GET requesting [CODE] files. We will re-write the [CODE] files in PHP but we can not change the flash app (... | A workaround/alternative is to simply rewrite the [CODE] request to [CODE] and store your files as ordinary [CODE] files - assuming [CODE] files are served correctly. Using mod_rewrite you could do something like the following in your root [CODE] file: [CODE] This would internally rewrite a request for [CODE] to [CODE]... | 3 | 7 | 2,972 | 2016-10-04T01:32:31.247 | infrastructure | serverfault.com | |
715,241 | PHP Sockets. Better on multiple ports or not? | I have been running my server for the past 6 years without any problem, but recently ran into some trouble. I am getting a lot of SYN_RECV connections which is pushing the backlog of connecting devices so far back and nothing is updating as it should. Now my server is a Intel(R) Xeon(R) CPU E31230 @ 3.20GHz with 7 core... | I managed to solve the problem I have been having with my server and Tracking Units. What has happened, we are using a custom APN network from our local service provider, and we are experiencing problem from their side. Connections will get lost and when a connection is made with my server, the APN will just drop the c... | 0 | 0 | 765 | 2015-08-19T12:15:45.117 | infrastructure | serverfault.com | |
163,554 | What is "LicenseDword" in Update Server BaseApplicabilityRules? | Looking at the Applicability Rules that are in use by WSUS (msus) by looking in the XML files themselves there are many rules that are not documented in the MSDN Doc's or in the XSD files that come with WSUS. For the most part I have been able to work out how Update Agent works out the rules so far with the exception o... | You can use SLGetWindowsInformationDWORD from the Software Licensing API to get the values. You can do it yourself by going to Registry Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ProductOptions Then looking at REG_BINARY Value ProductPolicy which is a binary storage of what apears to be key value pairs. I... | 0 | 0 | 232 | 2010-07-23T20:00:18.027 | infrastructure | serverfault.com | |
753,747 | How to identify Message-ID from the Sender's mailbox | We have an Exchange 2010 & Outlook 2010 environment. When a bulk item is sent to multiple users, each of the message has the same unique message-ID. I am researching a way to identify to validate that it's the exact same item. My problem is, there's no header information in the sent item from the sender's mailbox. The ... | Viewing Headers: Office 2010/Exchange2010 TechNet Blog . The feature is there, but by default it is buried in the interface. For Newer Versions You can do so by installing/enabling the Message Header Analyzer on Office 2013 and later from the Office Store. This works in OWA as well. I happen to like this option as I ca... | 2 | 0 | 1,449 | 2016-02-03T15:02:09.287 | infrastructure | serverfault.com |
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