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95,793 | Complex query performance in MySQL InnoDB versus MyISAM | I am running on MariaDB 10.0.15 on a 4GB RAM cloud server with Local SSD disk for database. My model: [CODE] I have this table [CODE] with more than 100 million records. I want to sum all [CODE] for a specific user in a specific period. This is the query that I am having problem: [CODE] There are some users that have a... | In your case, your problem is RAM. Why? In my old post What are the main differences between InnoDB and MyISAM? , I discuss how each Storage Engine does caching. InnoDB has a Buffer Pool that cache data and index pages MyISAM does no dedicated caching of data, only indexes. Data get cached in OS RAM. Here is a picture ... | 0 | 1 | 718 | 2015-03-20T13:19:42.833 | database_errors | dba.stackexchange.com | |
818,595 | Is sending "X-Real-IP" and "X-Forwarded-For" necessary for an Nginx cache running on LAN? | I'm setting up Nginx as a caching HTTP server for Steam and Origin game downloads on my LAN. Is it necessary for Nginx to send the [CODE] and [CODE] headers to the servers, if: The IP addresses will always be RFC1918 addresses (192.168, 172.16, 10.) No state needs to be tracked by the upstream content servers If it is ... | No, you don't need them. As a security precaution, the actual host will remove these values to prevent IP spoofing, and may use any value they choose (X- headers are custom and can be anything) | 0 | 3 | 2,896 | 2016-12-03T22:09:02.180 | infrastructure | serverfault.com | |
121,064 | How to correctly implement the NNConv in Pytorch? | I tried to make a GNN class which can make use of my node features along with my edge features of the graph.I have implemented NNConv in order to use the edge features, but I am not able to understand what’s going wrong in this. The overall dataset has many graphs with varying number of nodes and edges. But same node a... | Since this post is from 10 months ago, I guess you already made it work. However, for other readers, I think the problem lies in your nn1 and nn2, the output of those must be in_channels * out_channels according to the NNConv implementation of torch_geometric NNConv . | 0 | 0 | 99 | 2023-04-21T01:16:02.613 | data_quality | datascience.stackexchange.com | |
986,535 | How can you Reduce Downtime with a Name Server Change? | I am planning to change the registration of a domain from Hover to AWS. In preparation, I am first going to change the Name Servers over from Hovers own DNS to Amazons Route 53. Currently, I have created a Route 53 Hosted zone for the domain that I am planning on moving and have replicated the DNS entries to be identic... | Provided that both of your nameservers are active and updated (which you mentioned is true) while the DNS propogration takes place, there will be no downtime due to DNS-based errors. Since there are two nameservers running at once, a client's DNS request will hit the old one or the new one, and both are running with th... | 0 | 5 | 940 | 2019-10-02T16:42:01.787 | infrastructure | serverfault.com | |
266,932 | SQL Server Spill level 0 - what is it? | I was asked to look into performance of a query in SQL Server 2016 SP2, and I found something that I have not seen before: [CODE] Does anyone have any information on "Spill level 0"? Before everyone sends me off to lmgtfy.com - I've been there :-) and there is literally just a single result for this on Google; and on t... | An exchange spill ( [CODE] ) occurs only in response to an intra-query parallelism deadlock . SQL Server resolves the deadlock by forcing one or more of the exchanges (parallelism operators) to write its buffers to tempdb . There is no concept of a spill "level" for an exchange spill (unlike sort or hash spills, which ... | 13 | 18 | 1,742 | 2020-05-11T10:48:46.720 | database_errors | dba.stackexchange.com | |
834,208 | HAproxy - SSL and virtual hosts issues | HAProxy Config: [CODE] Apache Conf: [CODE] Shared IP - 192.168.1.3 example.com goes to 192.168.1.3 test.example.com goes to 192.168.1.1 Going to test.example.com and bypassing the proxy, the virtual host works just fine. Going through the proxy at example.com, for some reason it goes to the default instance in the conf... | Because your backends point to 192.168.1.1:80 and 192.168.1.2:80 , however your Apache vhost is configured to listen on port 443 instead of port 80. | 0 | 1 | 1,278 | 2017-02-22T15:02:17.043 | infrastructure | serverfault.com | |
23,713 | Forecasting one time series with missing data with help of other time series | I have time series $R$, which shows, how [CODE] changes at the regional level. I have several time series $U_i$, which show, how [CODE] changes at a special unit $I$ level. There are many units in the region. $R$ has no missing data. Different $U_i$ have their own missing periods. I want to forecast $U$ after a missing... | Not a fully complete answer, but some inputs. Your time series are correlated. I assume that the measure you want to forecast for a region is an aggregation of units forecasts. To address the first point, I usually use Vector Autoregressive Model (VAR) that forecast all time-series at once (each one being expressed as ... | 1 | 1 | 242 | 2017-10-12T14:08:19.673 | data_quality | datascience.stackexchange.com | |
120,759 | Unable to remote access MySQL - Unbuntu | I have installed Ubuntu 15.04 I've bind the IP address, there are no firewalls installed, but yet connection is still being refused! I've tried everything I could find online, anyone have any way of doing this or testing to see what is actually wrong? The "master" server is what I'm trying to connect to from a "slave" ... | Verify that the port is open. From a remote host with the default port: [CODE] Can you show us the my.cnf file, [mysqld] section with the bind address parameter. Can you ping that ip address at all? Do you use a hostname or an ip address to connect? If it works with ip and not hostname you may have a dns configuration ... | 1 | 0 | 493 | 2015-11-11T16:25:07.333 | database_errors | dba.stackexchange.com | |
320,245 | Performance comparison of two sql statements in TDengine | I have two sql statements in TDengine database: [CODE] The first statement takes less than 1 second,but the second statement takes 35 seconds. The result of these two statements is the same, so why is the performance difference so big? | I don't know TDEngine specifically, but the second query has a subquery, and in most database systems the subquery would possibly be processed first before the outer query's filters are applied. This would depend on how the table is indexed, and how that database system's engine works in particular around when it finds... | -2 | 1 | 77 | 2022-11-27T15:42:49.717 | warehouse_errors | dba.stackexchange.com | |
324,278 | Can't access specific directory/files on Apache [Server not found] | I've currently tried to setup a webserver on my Fedora 15 machine to run content management systems locally . My purpose for this is to gain some experience with administration of webservers. However, i've run into a problem when trying to install/configure AdaptCMS 2.0.1. I've placed AdaptCMS2/ in /var/www/html/ as sp... | [CODE] Type URL explicitly: [CODE] , Firefox is trying to access non-existing site www.localhost [CODE] If this isn't typo in answer, your should change install.ph to install.php Are unix rights on AdaptCMS2 folder and it's files correct? Can apache user have access to it? Try to place static html file in AdaptCMS2 fol... | 0 | 0 | 4,613 | 2011-10-24T14:20:45.697 | infrastructure | serverfault.com | |
498,664 | postfix pcre conditional REPLACE | I need to modify the "From:" header line in incoming e-mail messages only if "Message-Id:" starts with a defined string. So in main.cf I put: [CODE] and header_checks file contains: [CODE] It doesn't work, the condition does not take. What am I missing? | http://www.postfix.org/header_checks.5.html if /pattern/flags [CODE] you can not use an if/endif block to match a different header. | 1 | 2 | 5,230 | 2013-04-12T06:25:03.290 | infrastructure | serverfault.com | |
654,382 | Dell H700 SSDs and HDs in different RAID groups? | I am about to purchase a Dell R610 and use a H700 RAID controller. I was wanting to add 2 X SSD (480G) RAID 1, and 2 X HD (2TB) RAID 1. In reading over the manuals I saw: SSDs require the PERC 6/i or PERC H700 integrated storage controller card and cannot be mixed with any other type of hard drive source Is this just f... | You can't mix disk types in the same RAID group. However, you can mix drive types in the same server/controller. As for caching policies, they can be configured per drive group. | 1 | 3 | 855 | 2014-12-23T11:20:11.757 | infrastructure | serverfault.com | |
868,688 | eMail enforces AAAA DNS Record and won't send without | I have a problem with a mailserver. I set up an A and a MX record, I am able to receive mails from different servers, but all outbound mails (to different mail providers) fail with the status: 1) Connection failure: Connection broken during SMTP conversation while talking to mx-ha03.web.de; 2) AAAA-lookup mx-ha03.web.d... | I don't think that's an accurate read of the problem. These two errors are far more glaring: 1) Connection failure: Connection broken during SMTP conversation while talking to mx-ha03.web.de; 3) Connection failure: Connection broken during SMTP conversation while talking to mx-ha02.web.de; This indicates that the SMTP ... | 0 | 1 | 406 | 2017-08-15T08:54:45.360 | infrastructure | serverfault.com | |
431,398 | What info is really useful in my iptables log and how do I disable the useless bits? | In my iptables rules files, I entered this at the end: [CODE] I DROP everything besides [CODE] for SSH (port 22) I have a web server and when I try to connect to it through my browser, through a forbidden port number (on purpose), I get something like that in my [CODE] [CODE] As you can see, I typed xx.xx.xx.xx:1999 in... | Re: 1) Browser may try connecting several times, especially if you set DROP, if you set REJECT you will get immediate "connection refused". Re: 2) Maybe you set -j LOG rule before you allow SSH in, order is significant in chain. I recommend this book , consider how to analyze and maybe get some statistics from logs. | 1 | 1 | 1,344 | 2012-09-24T14:55:59.060 | data_quality | serverfault.com | |
816,576 | Error when starting apache - apr_global_mutex_lockfile | Good morning, I am trying to start up Apache HTTPD 2.4.23 on my Centos 5.11 (Linux version 2.6.18-371.6.1.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-54)) server. I manually configured it with the following options: With apr 1.5.2 With apr-utils 1.5.4 With pcre 8.37 My HTTPD.conf fil... | In case anyone comes across this issue in future, here is what I did to resolve the problem. 1) I realised I didnt actually need mod_proxy to run my load balancer, mod_jk was sufficient. Therefore I commented out all mod_proxy modules. 2) When I ran 'ldd /opt/apache/bin/httpd' I could see that HTTPD was looking in the ... | 1 | 0 | 4,422 | 2016-11-23T11:36:50.407 | infrastructure | serverfault.com | |
213,614 | FsockOpen problem with Iptables inside OpenVZ VM | I have a virtual machine on debian. I have made some modification to the HN to allow statefull firewall inside vm ( http://wiki.openvz.org/Setting_up_an_iptables_firewall ). Here is my firewall script : # Flushing all rules iptables -F iptables -X # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPU... | I add this rule and i worked fine : # Allow DNS client request iptables -A INPUT -p udp --sport 53 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT | 3 | 0 | 977 | 2010-12-17T10:55:20.170 | infrastructure | serverfault.com | |
1,028,922 | NodeJS and Redis Cluster - Error: connect EMFILE | I'm banging my head against the wall now for 3 days and counting. I hope you can tell me what am I doing wrong. I have a Redis cluster with 3 masters and 3 slaves. A NodeJS application wishes to use the redis to store and serve data quickly. All seemed fine, however, we experienced occasional drops in the application. ... | The error EMFILE is "Too many open files". In the conext of opening a network connection, a file descriptor is required, so since you are opening thousands of simultaneous connections, you are running into the open files ulimit, which by default is 1024. You can raise this by setting [CODE] in [CODE] , and restarting p... | 1 | 1 | 3,192 | 2020-08-05T07:01:09.200 | database_errors | serverfault.com | |
997,318 | Find/Allocate IP to new VM for ssh | I created a virtualbox vm with bridge connection. How do I find its IP address, or set its IP, so I can ssh into it and use it? It has a mac address, can I use this at all to set a route through arp ? | Use a VM template that has EUI-64 addressing on interfaces. Set or get a known MAC address. IPv6 address will be your prefix + computed EUI-64. AAAA records can be entered in DNS as soon as the MAC address is known. | 0 | 0 | 60 | 2020-01-02T02:30:39.783 | infrastructure | serverfault.com | |
140,360 | Tables not displaying after creating database by script. Do I need to insert? | I successfully created (scripted) a database in SQL Server 2012. My problem is that while the database itself is listed in the object explorer, the tables from the database are not. The database I scripted did not contain actual data, i.e., there were no 'Insert' statements. Is this last the reason why the tables are n... | In Object Explorer, drill down to your database, and then to Tables. Right-click Tables and click Refresh. If your newly created tables do not show up, perhaps you created the tables under a different database by mistake. This might happen if you were missing a [CODE] in which case they would likely end up in the defau... | 3 | 11 | 21,924 | 2016-06-03T19:24:36.997 | database_errors | dba.stackexchange.com | |
998,415 | Fundamental difference between t3 and t3a EC2 instances | Both T3 and T3a instances offer the same configuration, CPU credits and network performance. The only difference that I find is T3 uses Intel processor while T3a uses AMD processor, while both are running at 2.5 GHz. Is this the only reason for reduced cost of T3a instances? How does a customer make a choice between th... | Per benchmarks at photographerstechsupport.com , t3 instances tend to be 10 to 20% faster than their equivalently spec'd t3a counterparts. I notice that the precision of some of the benchmark values is low enough (i.e. 0.06 vs 0.07, reported only to the nearest hundredth) that the actual difference could be anywhere be... | 33 | 30 | 42,761 | 2020-01-10T10:14:15.677 | infrastructure | serverfault.com | |
56,121 | Big table size in PostgreSQL while number of rows is small | Tables' size in the PostgreSQL DB are big while the number of rows is relatively small (less then 500K rows). Vacuum of the specific table did not solve the problem. Only by deleting and importing the table from a previous dump file did solve the problem: the tables' size are back to normal. Consequently, all the queri... | Autovacuum doesn't try to release space back to the OS. That's often counterproductive to do, since PostgreSQL would just have to allocate it again later, and allocating new storage is slower than re-using already allocated storage. If you want to release space back to the operating system you can use [CODE] on the tab... | 0 | 1 | 2,576 | 2014-01-03T13:40:53.813 | api_errors | dba.stackexchange.com | |
551,595 | MySQL service was shut down - why? | I have installed MySQL Server 5.5 on the WIndows Server 2008 R2. In the [CODE] I see that it has the Startup [CODE] set to [CODE] . Everything was fine until today when that service was somehow turned off, but I did not do this. So, 1) what can makes that service to be shutted down ? 2) Maybe is there any error log ? 3... | 1 - It could be many different things, I'd check your MySQL Log file in the first instance. 2 - ^^^ but also -> http://technet.microsoft.com/en-us/library/cc722404.aspx 3 - Yes, you can choose what you want a service to do if it fails; http://technet.microsoft.com/en-us/library/cc753662.aspx | -2 | 0 | 134 | 2013-11-08T09:55:19.803 | database_errors | serverfault.com | |
845,162 | Disabling SSLv2 in Courier IMAP | I'm attempting to disable SSLv2 support (amongst other things) in Courier on Linux. In /etc/courier/imapd-ssl I have: [CODE] This works nicely on imaps (993/tcp): [CODE] But for STARTTLS on 143/tcp it still seems to allow SSLv2: [CODE] By contrast: [CODE] So it looks to me is as SSLv2 is still enabled when using STARTT... | Since SSLv2 and SSLv3 are obsolete for years and TLS is the successor, nowadays you probably want to disable TLS 1.0 and TLS 1.1 in courier. Don't set the [CODE] ! The default will be fine, it will take the settings from your openssl settings. In [CODE] set [CODE] This will allow TLS 1.2 or newer (TLS 1.3 is out) Wheth... | 3 | 4 | 1,511 | 2017-04-18T21:20:30.997 | infrastructure | serverfault.com | |
14,704 | How can I avoid conflicts running Selenium tests in parallel, when they must exercise an underlying REST API? | I have a web application which needs to be tested in multiple browsers in multiple environments (i.e. Chrome, Firefox, and Internet Explorer in both Windows and Linux* (*with the obvious exception of Internet Explorer)). Tests have been written in Java using JBehave, Selenium, and SerenityBDD (Thucydides)). These tests... | An alternative is to use a universally unique identifier ( UUID ) that enables unique identification of information in distributed systems without significant central coordination (so no need to pass parameters to a Jenkins job). In this case each test would take care to create IDs itself: [CODE] This could solve your ... | 3 | 1 | 1,627 | 2015-09-14T13:18:35.447 | api_errors | sqa.stackexchange.com | |
148,341 | Linux: Schedule command to run once after reboot (RunOnce equivalent) | I'd like to schedule a command to run after reboot on a Linux box. I know how to do this so the command consistently runs after every reboot with a [CODE] crontab entry, however I only want the command to run once. After it runs, it should be removed from the queue of commands to run. I'm essentially looking for a Linu... | I really appreciate the effort put into Dennis Williamson's answer . I wanted to accept it as the answer to this question, as it is elegant and simple, however: I ultimately felt that it required too many steps to set up. It requires root access. I think his solution would be great as an out-of-the-box feature of a Lin... | 30 | 23 | 46,227 | 2010-06-04T19:46:53.890 | infrastructure | serverfault.com | |
322,323 | Why would NPS suddenly stop authenticating users? | We use a computer running Windows Server 2008 (32-bit) with the RRAS and NPS roles to authenticate users for VPN and wireless access over RADIUS. This configuration has been working great for more than a year, but starting this morning the server has started denying all requests. As far as I know, the only change was i... | The domain controller certificate had expired. That prevented connections that required the [CODE] authentication method. Re-issuing the domain controller certificate immediately allowed RADIUS requests to authenticate normally. | 4 | 3 | 26,553 | 2011-10-17T19:50:35.897 | infrastructure | serverfault.com | |
906,681 | Postfix reverse MX check | Is there any way to configure reverse MX check for Postfix to check incoming emails? I just noticed that most of our spam which are still coming true are sent (or seems to be sent) from properly configured SMTP servers, (like yahoo's or which ever), passing reverse DNS, SPF and other checks, but actually there is often... | Postfix can't do this. I use rspamd for that, there is a rules: MX MX_INVALID Domain has no working MX MX MX_MISSING Domain has no resolvable MX Just set high score and enjoy blocking spam. p.s. RFC does not requires domain to have valid MX record | 2 | 3 | 761 | 2018-04-09T04:34:46.150 | infrastructure | serverfault.com | |
368,534 | Subversion on apache using proxy | I have a subversion server implemented as an Apache 2.0 server under Linux (RedHat). I have to access this server from Windows XP via a proxy. If I try to connect with a browser under HTTPS I will be asked for [CODE] and every thing works fine. If I try to access it with tortoise, I will be asked for account and passwo... | It seems there is an issue with TortoiseSVN accessing your repository. Try to configure proxy for TortoiseSVN , if you haven't already. | 1 | 3 | 199 | 2012-03-11T13:52:00.993 | infrastructure | serverfault.com | |
1,100,676 | reaching apache public reverse proxy virtualhost url from localhost behind a NAT using iptables | I have an issue with a guest using virsh behind a server running with iptables firewall. This guest hosts websites, one is mattermost with reverse proxy. Everything is working well. I then installed collabora online 1 : https://www.collaboraoffice.com/code/ . Super cool to open documents and they have a plugin for matt... | The culprit here has been a faulty/incomplete NAT rule. During a TCP connection, each endpoint has fixed source / destination IPs, and if an IP packet is received on this port with a different source / destination IP, the packet gets discarded. This is true for both endpoints: client ( curl ) and the server. To underst... | 0 | 1 | 378 | 2022-05-11T14:16:44.360 | infrastructure | serverfault.com | |
14,340 | SQL Server 2000 to 2008 R2 | When I try to restore a database abackup from a SQL Server 2000 to 2008 R2m, I get this error: Actually, I don't quite get it. What does the error actually mean? And how can I solve it? | Your database has multiple filegroups. You can't just use the simple UI dialog to say "restore database"... you need to use [CODE] to indicate which files should go where (even if they all are going to end up in the same location). We can't really tell you what your actual [CODE] command will look like without seeing t... | -6 | 9 | 2,309 | 2012-03-03T04:15:40.250 | database_errors | dba.stackexchange.com | |
992,394 | Elastic Beanstalk Health Degraded | I am trying to to deploy an Node.js Docker image to Elastic Beanstalk using Travis CI. The tests and builds in Travis keep passing and successfully deploying however, I keep getting the following warn and error on my Elastic Beanstalk console WARN: Environment health has transitioned from Info to Degraded. Incorrect ap... | I faced the same problem and the cause was the command timeout Default max deployment time -Command timeout- is 600 (10 minutes) Go to Your Environment → Configuration → Deployment preferences → Command timeout Increase the Deployment preferences for example 1800 or upgrade the instance type to work faster I hope that ... | 1 | 1 | 9,619 | 2019-11-19T09:11:43.273 | database_errors | serverfault.com | |
378,546 | Cisco 5505 VPN RDP not working | I am in dire straights over here. We just changed our LAN from a 192.168.1.0 to a 172.16.4.0. We run Active Directory in our environment and our gateway is a Cisco 5505 ASA. Since the change, our clients can VPN in and make a connection but cannot RDP to any machines that they need to get to on the LAN that they VPN in... | i'm not familiar with asa too, but you could take a look at ACL's part, from your description it looks like you didn't updated them. [CODE] will show your acl's. also, you can take a look at whole config by running this command [CODE] , maybe you will see some old ip's there. | 0 | 0 | 194 | 2012-04-11T16:04:59.827 | infrastructure | serverfault.com | |
1,094,124 | How to set VMWare VM screen resolution on Windows using Ansible | I'm trying to deploy a vSphere Windows VM via Ansible and need to set a specific screen resolution (1024x768). Running [CODE] works locally in PowerShell with the following command (the [CODE] needs to be escaped with a ` in Powershell to avoid making the arguments a list, and the [CODE] is needed to run commands with ... | Ultimately I was unable to get this to run remotely via PowerShell, but I was able to run this as a scheduled task which runs immediately upon being registered: [CODE] you can configure this task to delete itself using the instructions found in https://stackoverflow.com/questions/64006824/ansible-win-scheduled-task-how... | 2 | 1 | 1,014 | 2022-02-18T16:07:53.480 | pipeline_ops | serverfault.com | |
254,538 | Migrating ssrs reports between different domains | I have an SSRS server in Domain A and i was asked to copy all the folders and reports from domain A to an SSRS server in domain B. The network team has opened the ports between the two servers in the different domain and i can connect to the web browser of each SSRS from the opposite server. When i copy reports between... | I solved the issue problem was insufficient permission. used another user and added it to iis_user group and local administrators. then ran the rs command as usual. also the cmd needs to run with as administrator. | 0 | 0 | 777 | 2019-12-02T08:59:14.577 | bi_errors | dba.stackexchange.com | |
19 | How do I include my internal CA certificate to validate SSL exchanges in Chef? | We do use an internal Certificate Authority to create server certificates in my company. We also have to deal with a transparent proxy doing SSL interception (MITM). I regularly encounter SSL validation errors due to Chef not knowing the CA certificate, and sometimes it's the tooling around chef itself (berkshelf, knif... | There's a couple of way to achieve the result: Chef has a [CODE] to allow adding certificate to the trusted list. the documentation has a lot of details about it. Adding your CA certificate to this directory would solve the problem. [CODE] has it also in a slightly different path as per it's own documentation Chef use ... | 18 | 15 | 6,230 | 2017-02-28T17:08:12.693 | pipeline_ops | devops.stackexchange.com | |
53,490 | Using Files and Filegroups | I am updating a database to use multiple filegroups. As it stands, it uses just the PRIMARY filegroup. I have read that it is recommended to create a second Filegroup (called 'Data') and mark that one as the default. Will all database objects (tables, indexes, etc) automatically switch to this new one? Secondly, does i... | For me, this is a question of simplicity-of-design vs performance-and-scalability. If I am designing a non-critical database that won't see a huge amount of traffic, then I typically would go with a single file per database since it is easy to configure and maintain. However, if your recovery point objective is to be a... | 3 | 3 | 516 | 2013-11-18T15:40:57.530 | warehouse_errors | dba.stackexchange.com | |
411,454 | windows QUEUE MESSAGES error on open - The list of messages cannot be retrieved. Error: Access is denied | Problem: When opening windows "QUEUE MESSAGES" on windows server 2003 I received the error message [CODE] Why? Recreated following these steps: Windows Server 2003 standard 64-bit Right click MY COMPUTER Select MANAGE SERVICES MESSAGE QUEUING PRIVATE QUEUE MYSERVICE QUEUE MESSAGES Error message displayed: [CODE] Setup/... | This can happen if the .NET Service removed the "Everyone" group from the permissions the private queue. Here are some steps you can take to resolve this: Stop the MSMQ Service Open the folder C:\WINDOWS\system32\msmq\storage\lqs Find the file in this folder that describes your queue -- (incommingQueue) Using notepad, ... | 4 | 5 | 6,561 | 2012-07-26T13:40:21.760 | infrastructure | serverfault.com | |
426,853 | Feature Store Design for input data like JSON, CSV and Excel | I need a design approach for a feature store which accepts input data in the forms of CSV, EXCEL, JSON etc. The backend stack we support is Java, Spring boot and oracle DB. Note : Each file corresponds to only one single type of object and each of the object doesn't have any relationship with the other objects(that get... | Is it a good approach to create new table on the fly from java ? It is an approach. To evaluate if it is "good" or "bad" one need to understand its consequences: your program requires full "CREATE / ALTER TABLE" access rights on the schema, that means, it looses some of the safety mechanisms a database could provide th... | 1 | 1 | 175 | 2021-05-30T05:51:01.520 | api_errors | softwareengineering.stackexchange.com | |
321,107 | what permissions does a user require to query AD from SQL Server? | Have created a linked server to active directory from SQL Server but getting a permission denied error when I try to query anything. Under the security options for the linked server I have specified the connection to use a domain account which can query AD from powershell. Should this account have any special permissio... | As you discovered using Powershell, unless changed, normal, authenticated, non-admin user accounts have the right to search & Read AD. No reason to believe this would be different from a SQL server. Sounds like there is a config issue with the SQL or script. | 0 | 1 | 4,617 | 2011-10-13T10:50:26.497 | database_errors | serverfault.com | |
381,241 | How should I back up multiple in-use MS Access databases? | Disclaimer: I'm a software engineer, not an IT professional, sorry if some of my suggestions are silly or otherwise ridiculous. A windows application, which will remaining running at all times, is connected to, and constantly interacting with, several MS Access databases. The application may be reading or writing to an... | Any time you have a file open you run the risk of having a corrupted copy when you just copy it to another location. As you alluded, Access isn't really meant as a multiuser database and I don't know of utilities that will safely dump the contents to another file the way you can with most SQL databases. You might have ... | 1 | 5 | 3,591 | 2012-04-19T17:59:56.017 | data_quality | serverfault.com | |
116,917 | Why is accuracy not a useful measure for information retrieval problems? | I have been studying about information retrieval and recommender systems. While reading about it I found that accuracy not a useful measure in information retrieval. I understand that, accuracy might not be good because if data imabalance, which is pretty common in information retrieval where we can have few data of ou... | Well, there are several reasons you can consider actually on why accuracy might not be the best measure of performance for an information retrieval system. For one, accuracy only considers the number of correct predictions made by the system, but not the relative importance of those predictions. For example, if a syste... | 2 | 1 | 370 | 2022-12-09T17:25:54.940 | data_quality | datascience.stackexchange.com | |
1,023,816 | nethogs -t | awk '{print $0}' return no output | nethogs is a linux process bandwidth monitoring tool. https://github.com/raboof/nethogs nethogs -t it's output looks like this. [CODE] I'm trying to to parse it's outout with awk. [CODE] returns no output :-( [CODE] much the same ; I presume it's the way nethogs is buffering it's output or some other quirky way it's wr... | I tried to reproduce the issue, but I couldn't, at least, not in a terminal (in my case, [CODE] printed the lines as expected), so this is a guess only. You can try to avoid buffering by reading the output line by line from the shell like this: [CODE] | 0 | 1 | 348 | 2020-07-03T00:03:01.260 | pipeline_ops | serverfault.com | |
642,029 | The Backup Paradox | I have been thinking about how large companies backup their data. I imagine that in some critical enterprises they must consider every possibility and can't afford to lose even one bit of data. Of course they use backups. But what if the backup fails? The whole thing, not just one or two disk (because they're using RAI... | This isn't a paradox. There's no such thing as infinite or guaranteed or perfect redundancy. All anyone can do is manage risk. You can spend more money and be smarter and reduce the risk to an acceptable likelihood. | -3 | 2 | 110 | 2014-11-04T21:55:02.173 | database_errors | serverfault.com | |
850,382 | Nginx logs: client closed connection while SSL handshaking | CentOS 7.2 Nginx 1.13.0 PHP 7.1.4 My error logs has a lot of the below lines [CODE] What exactly is the meaning of this log? Thanks | The client connecting to nginx server didn't like something during the SSL handshake and closed the connection. Enabling more verbose logging can reveal more details why this happens. | 4 | 1 | 6,776 | 2017-05-16T10:42:50.383 | infrastructure | serverfault.com | |
948,800 | Setting up publicly-accessible DNS name in Google Cloud DNS | I am moving from Microsoft Azure to Google Cloud, and I would like to be able to publicly access one of my virtual machines at [CODE] instead of its external, static IP address. I am hoping someone can let me know if I missed something in the setup and if my understanding of what is required is correct. I went into Goo... | Just posting this answer for anyone having this same issue and in case the stackoverflow answer gets deleted. The way you had it configured would not work as this name (myapp.uswest.cloudapp.google.com.) will not be recursively resolve. For the very reason that it doesn't create any record under "google.com." for "uswe... | 3 | 2 | 7,143 | 2019-01-13T01:21:14.037 | infrastructure | serverfault.com | |
64,434 | Setting up a Secondary DHCP Server, for failover | Possible Duplicate: Can I have multiple DHCP servers on one network? Current Environment: Windows Server 2003 (Primary Domain Controller) Primary DHCP Active Directory Print Server Exchange 2003 Windows Server 2008 (Secondary Domain Controller) Active Directory Hopefully secondary DHCP So I am looking to setup DHCP on ... | Setup DHCP on the second server. Set it up to handle the same DHCP scope. On the first server, block it from issuing IPs 1-128. On the new server, block it from issuing IPs 129-255. (adjust ranges as needed). That or setup the second server to issue private IPs on a different subnet (you'll need to make sure that all y... | 5 | 5 | 24,675 | 2009-09-11T09:31:46.077 | database_errors | serverfault.com | |
111,763 | How to convert a string to callable | I have created a string array and called a method with that array along with Train, test data. The purpose of the method is to find Kfold results of each algorithm specifies in the array. Everything works fine except in cross_val_score(model,X,y) , it considers the model variable as a simple string instead of a callabl... | You can simply change the values stored in the [CODE] variable to simply store either the model name or the initialized model: [CODE] | 0 | 1 | 511 | 2022-06-13T06:33:20.583 | data_quality | datascience.stackexchange.com | |
315,571 | count the number of people who like me, number of people I like, and the intersection | i have two tables [CODE] and [CODE] suppose I have a row in the [CODE] table where [CODE] this means alice likes bob I want to count the stats for a user Charlie, i.e. how many people does Charlie like? How many people like Charlie? how many pairs are there? (x likes Charlie, and Charlie likes x) my attempt is as follo... | I'm apologize, my solution was all wrong. Here is a solution that works correctly: [CODE] | -1 | 1 | 67 | 2022-08-13T08:20:06.887 | warehouse_errors | dba.stackexchange.com | |
922,513 | Pointing specific users or OU's to specific DC's for logon authentication | I have around 200 users. 50 are in Asia, 50 in southern and Eastern Europe and around 100 in Western Europe. I would like to point the 50 users who are in Asia to our DC in Asia, and currently it appears that they are authenticating to our European servers, causing a massive delay on that end. What may be causing this,... | I would like to point the 50 users who are in Asia to our DC in Asia, currently, it appears that they are authenticating to our European servers causing a massive delay on that end. Does anyone have an idea on what may be causing this, or how to do what may resolve my issue above? You need to set up your sites and subn... | 8 | 25 | 533 | 2018-07-18T15:39:32.860 | api_errors | serverfault.com | |
857,607 | Windows Server 2016 not updating through WSUS | We have a WSUS server running on Windows Server 2016. WSUS detects and sends updates to all systems, including the 2012 servers. WSUS will detect but not send updates to any of the 2016 servers. It shows 0 updates needed, all updates show "installed or not applicable". These are fresh server installs, they have just be... | Ok, after spending 3 weeks with Microsoft's technical support department we have solved the problem. The problem is with Dual Scan trying to connect to Windows Update (online) and failing. When it fails the system just stops trying and refuses to connect to WSUS. The added problem is the server install media has a bug ... | 13 | 10 | 97,197 | 2017-06-23T21:39:46.430 | infrastructure | serverfault.com | |
163,913 | How to take a step back and look at code with fresh eyes? | I've spent the last year as a one-man team developing a rich-client application (35,000+ LoC, for what it's worth). It's currently stable and in production. However, I know that my skills were rusty at the beginning of the project, so without a doubt there are major issues in the code. At this point, most of the issues... | Ways to approach this: Find someone familiar with the technology and business problem and talk it through. This may be hard in a single-person team but is generally the best option. Work on a different project for a while. This also may be difficult but even taking a week's break can give you a fresh perspective. Look ... | 53 | 47 | 3,843 | 2012-09-06T14:18:59.767 | api_errors | softwareengineering.stackexchange.com | |
376,086 | How to get the PID of a process started by /bin/su -c | I'm writing a init.d-script for an java-app. But the java-app should be run by another user. (The OS I'm using is Debian Squeeze.) I already got this: [CODE] But this will of course only save the pid of the "/bin/su"-process instead of the pid of the created java-process. | Echo the PID inside the commands executed by "su": [CODE] | 5 | 3 | 4,939 | 2012-04-02T21:49:50.273 | infrastructure | serverfault.com | |
851,579 | SQLite3 is crashing the JVM | I am using sqlite-jdbc 3.7.2 when i run my application, SQLLite is crashing the JVM. It is not happening consistently but it happened twice. Please help to find the issue. [CODE] | Looks like the error occurs when the jvm or .so (not sure which) attempts to do IO on a memory-mapped file: [CODE] The memory mapping is getting munged. Make sure you have enough space in your /tmp directory and that you don't have conflicts with other programs modifying this area. You can also use a dedicated temp dir... | 0 | 0 | 1,488 | 2017-05-22T15:08:05.130 | infrastructure | serverfault.com | |
711,393 | Google softfail when sending between accounts on same domain | I'm dealing with this for almos a month. Tried several changes but no luck. Some users manage their e-mail addresses through standard Gmail. NOT Google Apps . Their accounts were configured as aliases . Some users manage their e-mail addresses using MSOutlook software. When USER1 (from outlook client software) sends a ... | Ok, this is it. Microsoft Outlook is NOT RFC2821 compliant . Gmail expects a valid domain but all that gets it's machine NetBios name. That's why all e-mail sent using an Outlook client get caught as junk and ends into spam folder. Solution, use a RFC2821 compliant mail client software. Thanks to all | 0 | 0 | 801 | 2015-08-06T18:00:05.290 | infrastructure | serverfault.com | |
1,051,940 | Ansible - x.x.x.x | UNREACHABLE! => { “changed”: false, “msg”: "Failed to connect to the host via ssh … } | I created a cluster and i try to reach the master node from an another Ansible server. I copied the ssh key to the master server. and i can reach it via below command, from ansible server [CODE] but i cant reach it with [CODE] And i took this error. [CODE] May you help me please? Other server fault issues didnt help me... | The ansible-playbook command probably fails because the path to the ssh-key is not defined. Ansible recommends to use the ssh-agent: [CODE] Another way to add private key files without using ssh-agent is using ansible_ssh_private_key_file in an inventory file as explained here https://docs.ansible.com/ansible/latest/us... | 1 | 0 | 21,728 | 2021-02-01T13:36:27.150 | pipeline_ops | serverfault.com | |
482,969 | Hard drives fail, filesystem goes into read-only mode | 2 days ago I got a warning message that: [CODE] I contacted my data center and asked them to change the hard drive. They told me that sometimes a server reboot solves the problem. I rebooted the server but it didn't came back online. Data center told me that both hard drives are demaged and suggested to change them and... | Your datacenter is staffed by lazy people, idiots, or quite possibly LAZY IDIOTS. Rebooting won't (or at least shouldn't) magically fix a failed hard drive. Re-seating the drive (a very common "trick") won't fix a drive marked failed for errors (it will eventually get knocked offline again). The fact that your server d... | 0 | 2 | 1,530 | 2013-02-27T11:06:04.253 | database_errors | serverfault.com | |
166,914 | When range partitioning, should I drop primary UUID-like key? | I'm aware of the limitation "every unique key on the table must use every column in the table's partitioning expression". So given that my primary key is a UUID, it's going to require a change. Background : I have a transaction history table that grows at about 1.5G per month (more so than I can keep upgrading server m... | Assuming Some queries involve a date range, usually "recent" dates, Other queries are point-queries, which involves a unique key You can purge data older than 18 months. Anything else? [CODE] are terrible for performance when the dataset size becomes too big to cache. It would take some work, but this is what I recomme... | 0 | 1 | 1,219 | 2017-03-11T05:19:53.027 | warehouse_errors | dba.stackexchange.com | |
197,720 | DBCC CHECKDB last good date | SQL Server 2014 Standard. Using Ola's (blessings be upon him) scripts to perform database integrity checks: Job command: [CODE] I know, I know. Running from master!!!! V, v, v naughty boy. Getting customer to create admin database and move all there. It just takes time ... All runs fine. Then I run Brent Ozar's (blessi... | Turns out the database was being refreshed from another non-checked database post DBCC and pre sp_Blitz job so all stats externally maintained were out. | -2 | 1 | 495 | 2018-02-12T21:23:25.113 | database_errors | dba.stackexchange.com | |
449,181 | vlans broadcast works but ping doesn't | i have a server with [CODE] , have a [CODE] (vswitch1) with one physical NIC attached, vswitch1 VLAN ID is set to [CODE] so it can see traffic on any VLAN, connected to vswitch1 i have 2 VM, Debian 6 and XP SP2 respectively. Untill now everythings OK, now, the interface config of the debian looks like this: [CODE] i al... | In huawei/H3C/HP world (all of them share more or less the same software) there are 3 kind of ports if we're talking about VLANs (802.1Q): -Access port: You assign an access port to one VLAN ID so the switch knows internally that all traffic coming from that port belongs to that VLAN. Also will forward all broadcast tr... | 0 | 1 | 1,090 | 2012-11-15T20:23:32.637 | infrastructure | serverfault.com | |
290,307 | I keep getting OpenSSL Header Version not found error when compiling OpenSSH Debian Squeeze | I built Openssl1.0.0d [CODE] It installed fine to the default /usr/local/ssl I went and downloaded OpenSSH 5.8p2 and ran [CODE] but now it keeps giving me a [CODE] error even when I set [CODE] I've tried it with arguments [CODE] [CODE] [CODE] [CODE] I looked in config.log and found [CODE] which makes little sense since... | Because I am an idiot. include [CODE] is incorrect. [CODE] is correct. It needs to be before the first [CODE] . | 0 | 0 | 12,758 | 2011-07-14T12:25:45.017 | infrastructure | serverfault.com | |
245,784 | Pgbouncer getting auth failing when trying to connect using psql | I'm trying to configure the latest pgbouncer to work with postgres 9. I can connect to my db using [CODE] with the right password but when I use [CODE] I can't connect with the error message of [CODE] This seems like it might be caused by my userlist.txt file, but I'm not sure of that. I checked and all required files ... | To create an md5 password for PGBouncer (or PostgreSQL for that matter), the formula is: [CODE] Here are 3 ways you can create one, where the username is "admin" and the password is "password123"... Linux: [CODE] MacOS: [CODE] Python 2: [CODE] Python 3: As above, but use binary strings... [CODE] Config Files The entry ... | 7 | 11 | 20,655 | 2019-08-20T14:02:55.280 | warehouse_errors | dba.stackexchange.com | |
470,436 | lookup file name in sql and rename file | I am trying to use a Powershell script to use the account number in a file name and re-name with the ID number from a sql database. Below is the code I am using to attempt this and I am not getting the results I need. Please let me now if you have any suggestion or advise in getting this to work. Thanks!! File name = 1... | By changing the $ID = Return-Info $CliRef to $ID = Return-Info $FiNm I was able to get this to work. The file name will also need to have the ".docx" removed. [CODE] | -1 | 0 | 1,503 | 2013-01-18T17:02:39.437 | infrastructure | serverfault.com | |
12,129 | How to render assets when building a static website with GitLab Pages and Jekyll | I'm using Jekyll to build a static site and deploy it with GitLab Pages. This site is compounded of posts (contained in the [CODE] folder) and refer to other HTML and Markdown documents that I placed in an [CODE] folder at the project's root, as recommended by Jekyll docs. When I build the website in the pipeline it ru... | It appears the issue is in the URL used to access the documents in the blog post excerpt. First of all, the URL should begin with a [CODE] since the [CODE] folder is at the root of the site project. However (and most importantly), I also had to add the [CODE] to the file URL as shown below: blog post excerpt: [CODE] If... | 1 | 1 | 261 | 2020-08-03T15:17:23.503 | pipeline_ops | devops.stackexchange.com | |
15,283 | TCP communication blocked during Pod termination in Kubernetes | I have a cluster running on AWS EKS, v1.20.7-eks-d88609 I have a Pod and a NodePort Service to expose it to the outside. Some clients will connect to it through a TCP connection which will be kept alive. However, I was trying to configure a graceful termination of the connection when the Pod was terminated, by capturin... | I've found the problem after some time, will add an answer here in case someone finds this in the future. Basically, my problem was exactly what is described in https://github.com/aws/amazon-vpc-cni-k8s/issues/1531 I had Calico installed in my cluster and was using a version that had a bug which blocked the Pod network... | 1 | 0 | 143 | 2022-01-20T14:48:55.447 | pipeline_ops | devops.stackexchange.com | |
838,763 | The behavior of SetEnvIf on PHP routes | We are using the mod_auth_openid plugin to provide OpenID support for part of our site. It works pretty well, but we're running into one of those "Do this, except when" conditions, and I'm not sure where I'm missing. There are a few URIs that we don't want this applied. On the surface, this is pretty straight forward. ... | Doing some investigation into how the dataflow works, I've implemented a bit of a test harness to see what [CODE] is at this stage of execution. [CODE] Then using a custom [CODE] statement using [CODE] in it, I've managed to show that [CODE] at this stage for most routes is [CODE] . Which is to day, The SetEnvIf method... | 0 | 0 | 1,130 | 2017-03-16T20:19:47.963 | infrastructure | serverfault.com | |
435,373 | Storing large data shared between microservices running in containers at AWS | I'm dealing with an application that does the following: we have a microservice running on EKS called by jobs that pull XML data off an external system. The data volume can be fairly large (700MB-1GB at times). We cannot control the volume of data, there's no pagination or way to pull a delta. the data gets written to ... | Have you considered using EFS ? You could try mount the same volume on to all processes (including lambda) that handle the data. Now, my experience with EFS is not much, since I've used it only once as a case study for a specific problem that needed to get around Lambdas memory limits. It didnt work in my case, since i... | 1 | 0 | 661 | 2021-12-16T16:26:44.780 | pipeline_ops | softwareengineering.stackexchange.com | |
369,830 | Serialized Object Representation in Javascript from PHP | Let's say I have a Widget object that I serialize and send back to the browser at a regular interval. This Widget object includes lots of different members (variables) and other objects along with their members. For example, in PHP, my widget may look like this: [CODE] For sake of brevity, the object Widget_child may h... | If you need to process nested arrays with known structure, you should create method which will process every level using recurency: [CODE] | 0 | 1 | 137 | 2018-04-23T03:10:22.340 | api_errors | softwareengineering.stackexchange.com | |
702,856 | Is there a Salt-equivalent to Puppet's Resource Default Statements? | With Puppet you can set Resource Default Statments : [CODE] and if I later have a [CODE] such as this it will inherit the default settings defined above. [CODE] Is the same, or similar, possible with Salt to avoid a ton of duplicate code? How? | Currently, it is not possible to set default resources like in puppet. The feature was approved, but there seems to be no information on if it was implemented yet. https://github.com/saltstack/salt/issues/6405 My suggestion is to use figure how to use jinja templating to satisfy this need. | 1 | 2 | 221 | 2015-07-01T15:05:19.067 | pipeline_ops | serverfault.com | |
230,786 | Exchange 2010 SP1 Non-Standard Ports | I'm doing a small trial of Exchange Server at work, and I am having a few issues with associated ports on OWA. I am being asked to use a different port for SSL, so I don't cause any conflicts with existing sites. I modified the bindings in IIS to use 4443 instead of 443 for ssl, and modified the address in the EMC, and... | Microsoft really really wants you to stay on TCP/443 for SSL, as that's where Outlook and any ActiveSync clients are hard coded to find it. You'll have better luck binding a second IP address to your IIS/OWA server and binding OWA on the new IP. | 0 | 3 | 281 | 2011-02-03T19:00:03.523 | infrastructure | serverfault.com | |
132,918 | Issues with sustained traffic with PFSense | Last week we had to replace our PFSense firewall because it had a catastrophic hardware failure. All but one of the NICs were taken out of the old server and put into the new one. The one NIC that was not moved was the LAN NIC as this is on-board. The other NICs are all WAN connections and the must all be present (i.e.... | Going with what Josh said, only one NIC should come into question when you're running [CODE] locally from the pfSense box. Are you sure that the Realtek 8169s are assigned to your WAN interfaces? If you hit up the console and drop to a shell you can run ifconfig to be sure (the Realtek NICs should be re0 re1, etc.). | 2 | 2 | 6,464 | 2010-04-15T22:58:22.220 | database_errors | serverfault.com | |
36,229 | Error not decreasing in a 3 layer deep CNN using TensorFlow | I'm trying to train a CNN to play an online game by feeding images of the game along with the keyboard input. By playing the game for some time and collecting the data, I gathered 342 images with size 110x42. I'm feeding these images in the network like so: [CODE] The errors are getting stuck in a particular value and ... | Two things: You're squashing the outputs via the sigmoid function before calculating the loss via [CODE] . This loss function takes the class logits as inputs, meaning you should be passing in the output from the linear layer without any non-linearity activation functions applied after. NOTE that applying a sigmoid fun... | 0 | 5 | 68 | 2018-07-31T00:31:24.513 | data_quality | datascience.stackexchange.com | |
99,322 | Indexed varchar column efficiency | On a table with several million rows, with an index on the only column in the where clause (varchar 100, full length indexed), would there be performance gains in making sure that the differences between those rows were early in them? i.e. would it be better if those columns contained: variable stuff-constant stuff rat... | It sounds like the column is a composite of two or more items. Creating an index on two or more columns can increase the chance that a value in the key is different from any other value in the index key. This can have its benefits. But as you add more columns than will be used in the where clause, the performance of th... | 1 | 0 | 43 | 2015-05-01T05:13:19.803 | warehouse_errors | dba.stackexchange.com | |
137,971 | How to approach functional tests in segregated systems | I'm implementing some automatic functional tests in an environenment that has about 20 applications talking to eachother using queues and/or restful interfaces. The problem I'm facing is that I added some test to one of the application, lets call it Payments, and they all looked very nice and green. One of the changes ... | I try to test as close to the fragility as possible. If the CRM is the component that isn't doing its job, that's where there is a hole in testing. It's the component that responded poorly to change. It's the piece that dropped the message without raising an alarm. I feel like people turn to big integration testing whe... | 3 | 1 | 152 | 2012-03-02T13:23:34.707 | api_errors | softwareengineering.stackexchange.com | |
705,802 | How to add a subdomain to the exchange server 2013? | I have Exchange Server 2013 which handles our corporate email. The default emails looks like this [CODE] . I need to add a sub domain to the servers so one email can look something like this [CODE] Finally I need to setup the new email [CODE] as a catch all email for the sub domain. I found a good tutorial that explain... | Open EAC (Exchange Admin Center). Select Mail Flow on the Left Panel Menu. Select Accepted Domains from the Top Menu. Click the + icon. Enter a name in Name , enter the fqdn of the subdomain in Accepted Domain . ("subdomain.example.com"). Select Authoritative domain . Select Save Don't forget to add/update an MX record... | 0 | 3 | 6,663 | 2015-07-15T03:03:49.200 | infrastructure | serverfault.com | |
21,220 | Why am I getting `Impossible WHERE noticed after reading const tables` in explain query? | I have a unique compound key like fr(fromid,toid) in the table, when I run the query with explain I get the following result: [CODE] The query I ran: [CODE] Any help? EDIT1: When I use the below query: [CODE] I see [CODE] instead of the previous message, but when I use the below query: [CODE] I again get the first [COD... | You are getting the message Impossible WHERE noticed after reading const tables This is documented in the page you already linked . MySQL has read all [CODE] (and [CODE] ) tables and notice that the [CODE] clause is always false [CODE] tables are defined as The table has at most one matching row, which is read at the s... | 29 | 23 | 38,813 | 2012-07-20T11:46:19.927 | database_errors | dba.stackexchange.com | |
439,470 | Setting correct Content-Type sent from Wordpress, on Apache server | I need help pointing me in the right direction for setting the [CODE] returned by Apache for content produced by WordPress. I'm having trouble figuring out why WordPress is returning incorrect headers. Issue The specific problem is that our Wordpress blog pages are being downloaded as a file rather than displayed by In... | My host helped solve this in the end: The most common causes for this behavior is an issue with the PHP handler or the AddHandler variable in an .htaccess file. I reset your PHP handler to suPHP, which it already was set to, and restarted Apache. That resolved the issue. | 1 | 0 | 1,602 | 2012-10-17T18:57:53.803 | infrastructure | serverfault.com | |
25,837 | Legacy Code Testing with Jenkins on PHP | We are trying to integrate pull request based testing into our legacy code and the problem is there are lot of errors and warnings needs to be fixed. So, our first step is while merging new branches into the master not increasing the existing warnings. Is there a plug-in for checking current problems in master and if t... | You will need some steps to get there: Have you repository system to notify Jenkins about the PR. That will depend on your system. GitHub and Bitbucket have system to do it. Build the PR branch . Report the job status . You can mitigate conflicts using a branching model like Gitflow , so developers can merge more frequ... | 0 | 2 | 85 | 2017-03-02T06:22:48.393 | pipeline_ops | sqa.stackexchange.com | |
454,648 | nginx server block shows welcome page | I'm trying to set my rails app to a specific subdomain. I'm using an ec2 instance with a bitnami rubystack VM I developed the app using it with the ip of the server, so I know that rails and the app work. ${nginx-dir}/conf/nginx.conf [CODE] ${nginx-dir}/conf/vhosts/backend.conf [CODE] This is what I get when I do a pos... | I have to remark that the answer provided by blackbox222 help me to determine the root of the problem. Finally, I changed my DNS provider for one that could actually configure the A record properly and not use some sort of bizarre redirect. TL;DR: make sure your DNS is configured properly | 2 | 0 | 1,665 | 2012-12-03T17:47:06.130 | infrastructure | serverfault.com | |
670,113 | Failed Gmail SPF check when importing mail through IMAP from our mailbox when original email was sent with ESMTP headers | We have a strange situation: we receive an email with ESMTP headers in it our server accepts it, it's fine we import that mail in Gmail like any other emails from our boxes Gmail makes SPF check which fails Gmail uses our server IP address and mail sender domain to make that check (sic!) We also have similar problem wi... | [...] we import that mail in Gmail like any other emails from our boxes [...] That's wrong, as the mail headers tell as something different: [CODE] The Emails are forwared by [CODE] to [CODE] for [CODE] . Apparently without setting the envelope-from: [CODE] Evidently the envelope's from is still [CODE] . I can think of... | 0 | 5 | 635 | 2015-02-20T10:49:25.807 | infrastructure | serverfault.com | |
628,901 | access preboot menu sun x4170 | I bought a second hand sun x4170 and need to reset the ilom password. I get output to serial console, but can't access the preboot menu as described by oracle. (by pressing the locate button) Can anyone please give me a detailed instruction starting at null to access the preboot menu on this machine? When do i have to ... | Had some problems with it to these days. My problem was, you had to push the locate button directly when you restore the power at the maschine. like in this second. Then on the console you see a message like hold two seconds the locate button to access preboot menue. Otherwise you were to slow. You have to push the but... | 0 | 0 | 840 | 2014-09-16T14:12:56.847 | database_errors | serverfault.com | |
880,442 | Multiple virtualhosts with the same servername | I have an apache server, a unique domain name and multiple tomcat instances, here is my actual config : [CODE] Now, I would like to use a CustomLog for each tomcat instance, I tried to put each ProxyPass directive in a separate virtualhost, but I got 403 error except for the virtualhost on the top according to httpd -S... | You can use the [CODE] directive in combination with conditional logging to log specific requests to different log files. [CODE] | 0 | 2 | 986 | 2017-10-26T14:10:48.393 | api_errors | serverfault.com | |
314,430 | simulate case sensitive collation in ssms | I know that it is not possible to set a collation for a session in sql server . I have different servers with different collations , however, one of them is a case sensitive collation and that can be more tough on the details as you can see on the picture below. Is there any setting or anything I can do to develop my s... | No, there is no way within SQL Server to do this, outside of restoring the DB under a different name on the same instance, or on a test instance, and changing the database's default collation to a case-sensitive one. Nor do I think that this would be desirable as the database's default collation controls several things... | 2 | 4 | 402 | 2022-07-14T19:32:25.653 | database_errors | dba.stackexchange.com | |
110,524 | Question about AMD cpu and if there are any problems with any particular libraries | I am getting a new laptop, the best laptop (or at least on paper) that I saw is using amd cpu and gpu. I heard that amd doesn't work well with tensorflow, curious if this is true, if is true is there any other important libraries in python that it doesn't work well with? | Tensorflow is implemented above CUDA which is an NVidia API for GPGPU (General Purpose GPU usage) that is supported by NVidia GPUs. AMD GPUs support an open standard GPGPU which was later written (OpenCL), however, they differ. Training on large datasets without using a GPU is possible, but will take much longer. There... | 0 | 0 | 142 | 2022-04-30T23:20:15.587 | data_quality | datascience.stackexchange.com | |
188,637 | Apache2: VirtualHost doesn't work | I'm having issues with redirecting a domain name to a specific folder on my server. I'm reading the istructions from here: These are my configuration lines: [CODE] However it doesn't work.. the domain just not forward the user to my website.. is there something else I have to configure ? | Try this (presuming that www.mywebsite.com resolves to the ip address of your web server): [CODE] | 0 | 4 | 4,346 | 2010-10-07T15:21:58.013 | infrastructure | serverfault.com | |
1,120,717 | How to improve sender score for personal mail server | Background: I have an own domain and an own mail server that sends out the mail for this domain. The users are only my family so there are less than 10 users with probably 20 mails sent per day. Please don't question why I have my own server: It is my job as a consultant to work with the server software and I use this ... | Does your server host a web site? I have found that some slight bit of reputation revolves around having a public web site bound to that domain and, potentially, on that same server. At least having a web site on the domain could help. Additionally, I have used a spam checker site such as https://www.experte.com/spam-c... | 0 | 2 | 145 | 2023-01-20T12:15:52.757 | infrastructure | serverfault.com | |
475,368 | Pass CRM 2011 Outlook authentication to Internet Explorer | Okay, so I have a Dynamics CRM 2011 environment running with IFD Configured. CRM is running Update Rollup 11, ADFS 2.0 has no Update Rollups installed. All servers in the environment are 2008R2. Our in-house developers have created a web app that serves documents through to CRM. When signed in using the browser, this f... | If the user is logged in via AD, pass through auth should work in IE. You might need to go in and trust the web server so it does not prompt the locally logged in user for auth. If they are outside the domain and have to login, then you'll probably be stuck. Outlook auths into the hub transport/exchange server (dependi... | 0 | 0 | 357 | 2013-02-04T22:23:49.410 | api_errors | serverfault.com | |
897,930 | Remote Management of Windows Server 2016 via Powershell through the firewall | I use a "free tier" AWS server instance. I have only so much CPU allowance on it, and remoting to it to perform basic management stuff eats into that CPU allowance in a big way. Enter Powershell. I can been managing local machines with powershell for some time now, and want to employ it to manage my remote server. The ... | The default ports are TCP 5985 / 5986 See here for more info: https://marckean.com/2016/02/08/remote-powershell-ssl-https-5986/ | 0 | 2 | 223 | 2018-02-19T21:48:29.187 | infrastructure | serverfault.com | |
704,442 | Duplicity backup to S3: BackendException | I'm trying to configure my Duplicity installation to backup to an Amazon S3 bucket. I keep getting a [CODE] error with no further details. EDIT: I've removed my Duply configuration from this question in an effort to isolate the issue more and switched to a plain duplicity command on a small directory (10 MB, 34 files).... | I don't know why the original command wasn't working, but in the end I figured out that changing the URL format from [CODE] to [CODE] fixes the problem. The reduced working command is now: [CODE] | 2 | 1 | 3,521 | 2015-07-08T20:02:16.673 | database_errors | serverfault.com | |
209 | Should "Is Docker right for my use case?" stay open? | The question I'm wondering about is this one . At first my feeling was that it was a real life practical case where there should be mostly 2 options, Yes or No, and actionnable points to back up the positio. As such the question is on-topic I think. It appears it attract mostly opinions without anything to back them up... | So after a while leaving this question open and no more feedback than the other answer here at time of writing, I'm tempted to get on the line of Aurora where this question has merit and never found someone to answer it properly. Overall the community of this site doesn't share my feeling the actual answers miss the ma... | discussion,questions,opinion-based | 1 | 1 | 71 | 2017-08-28T12:21:51.763 | pipeline_ops | devops.meta.stackexchange.com |
132,606 | Updating multiple columns using Case | I have a query that looks like below: [CODE] Problem with above is, each column (x, y) still gets updated with their own value if some_more_conditions return true irrespective of their specific conditions returning true. I tried removing ELSE from above, but no luck I am combining as some_more_conditions are same for b... | Both columns specified in the SET clause of your UPDATE are going to be touched (written to) for all the rows matching the [CODE] , no matter what [CODE] or [CODE] may evaluate to. There is no syntax to work around that while sticking to a single statement. So, either live with that or go for two statements: [CODE] | 2 | 3 | 7,008 | 2016-03-18T02:02:46.177 | warehouse_errors | dba.stackexchange.com | |
115,128 | Does Word2Vec's skip-gram NNLM even produce context words? | Let me first establish what CBoW and skip-gram are supposed to do. You can skip to the next section if you think this is unnecessary. Background My understanding is that Word2Vec is a suite of 2 algorithms, continuous bag-of-words (CBoW) and skip-gram neural-network language model (SGNNLM or simply skip-gram) , which a... | The answer is 3, but keep in mind that the original algorithm iterates over all available context words for each center word, thus all possible pairs are included for each center word (some frequent center words that may be stop words can be discarded depending on parameters). Also the original work uses a faster alter... | 4 | 0 | 279 | 2022-10-11T13:57:27.327 | data_quality | datascience.stackexchange.com | |
398,964 | Software Quality - preventing regressions with documentation | I lead a small but growing team of developers on an iOS application with a server backend. We have comprehensive unit and integration tests on both ends. As the product grows, I want the onus of "quality assurance" to fall on all team members -- currently, there is a very "throw it over the wall" mentality after develo... | How does the new employee know whether Joe's changes broke feature 2345 if he doesn't know how feature 2345 is intended to function? That is not necessary in most cases. Usually it is sufficient to check if Joe's changes did not change the previous behaviour of feature 2345, not if it works as its described in some doc... | 2 | 3 | 254 | 2019-09-26T21:19:23.987 | api_errors | softwareengineering.stackexchange.com | |
1,134,398 | .htaccess makes WordPress Dashboard very very slow | Today I suddenly find the WordPress Admin dashboard is very very slow. It takes about 60s or more to access the post list, plugin list, etc. Or will just show an time-out error. I try the following methods: Restart Apache service. Restart server. Change PHP.ini settings. Then restart the server. But all not working. Fi... | Thank you for all your help. I finally solve the problem. This post PHP scripts suddenly load very slow on Apache gives me hints. So I check the error log of Apache and PHP FPM: From Apache error log, I see one line of this: [Mon Jun 26 20:10:43.367089 2023] [mpm_worker:error] server reached MaxRequestWorkers setting, ... | -1 | 2 | 278 | 2023-06-21T03:08:10.797 | database_errors | serverfault.com | |
425,382 | Any tradeoffs for using open methods? | I was trying to understand the use of multi-methods recently and saw several claims that they solve the Expression Problem. However, I ended concluding that it is not the multi-methods that solve it, but the open methods, which usually accompany the multi-methods. Open methods being the methods that are defined outside... | The tradeoff in open methods is that they are tricky or impossible to implement efficiently. Thus, they are primarily featured in object systems that value flexibility over raw performance, e.g. various Lisp dialects. Another example is Julia, which then tries to get rid of as much overhead as possible using JIT compil... | 0 | 3 | 131 | 2021-04-13T05:24:22.740 | api_errors | softwareengineering.stackexchange.com | |
347,700 | NETWORK SERVICE is unable to save to a network path | I've done some extensive research on this and I've tried every suggestion I have seen. I am troubleshooting an application that runs a "scheduler" service to periodically export *.txt files to a network share. I've changed the service to launch as a network service, and gave the network service account full NTFS access... | If I understand what you've done correctly, on the network share you've granted write access to [CODE] . This is a local account only and granting this user write access on a folder/share will not allow remote computers to write to the folder. When a service running as [CODE] goes across the network, the source usernam... | 1 | 2 | 4,053 | 2012-01-07T18:09:10.020 | infrastructure | serverfault.com | |
411,932 | Encoding const-ness on interfaces. Readers - Writers vs Const wrapper | This question is based on this separate question on stack overflow. I have a very low-level structure meant to compactly save presets on flash memory. For simplicity I am going to use [CODE] as a substitute, obviously the actual type has a /lot/ more fields. [CODE] Now I also need to export/import this via the wire and... | I would prefer the second option. It is similar to [CODE] and [CODE] types provided by containers. Your wariness about [CODE] ness of the wrapper is equally applicable to iterators and pointers. You can have [CODE] inherit [CODE] , which removes some of the boilerplate. [CODE] As an aside, you should probably prohibit ... | 0 | 1 | 166 | 2020-06-24T14:31:34.147 | api_errors | softwareengineering.stackexchange.com | |
1,063,749 | How to Run/Access different web directory for virtual host other than default root? | I made the virtual host setup in Ubuntu 20.04 for accessing virtually to my web projects. I have followed the necessary steps properly, but since I wanted to work more portable and access my web projects from outside rather than default document root, so I set my own media device path (/media/akin/7114-BB32/htdocs/) in... | Since you have the [CODE] option enabled, the cleanest way to do this would be adding the symlink to your web root. That way you wouldn't even need to mess around the [CODE] . [CODE] and point your virtual host to [CODE] also check if apache has all needed permissions (IIRC it needs "execute" permissions to open someth... | 0 | 0 | 136 | 2021-05-16T19:59:34.363 | infrastructure | serverfault.com | |
915,353 | rsyslog ommail sends messages with empty bodies | I'm trying to send email from rsyslog (using the ommail module) on certain events, but no matter what I do the message bodies are always empty. My configuration file says: [CODE] This is copied from the example at https://www.rsyslog.com/doc/v8-stable/configuration/modules/ommail.html Messages are sent but the body is ... | Try this one: [CODE] See the [CODE] template value [CODE] and the parameters [CODE] and [CODE] . | 0 | 1 | 1,109 | 2018-06-05T23:19:42.110 | infrastructure | serverfault.com | |
342,620 | Can Kalman Filter make GPS data more accurate? | I'm trying to improve indoor gps accuracy in ios application. Do people apply such filters to gps data in different apps which track your position? I have 10-20 meters error indoors when using raw data from corelocation so will Kalman Filter have any impact on accuracy? | Some developers do, particularly for tracking run/walk distances. However they are not simply filtering the GPS input, they improve accuracy with sensor fusion . As mentioned in the comments, the GPS data from the receiver should already be filtered so adding another filter wont help. However fusing the data from anoth... | 2 | 3 | 4,622 | 2017-02-20T18:58:31.520 | api_errors | softwareengineering.stackexchange.com | |
213,568 | Problems during migration from SQL Server to MySQL via MySQL Workbench | We've found most of the options we needed to include the necessary CHARSET. Here is what we've included in the MySQL my.cnf: [CODE] But we still get an error which points to a wrong charset and/or collation: [CODE] Complete Log file: https://ufile.io/52s13 Can anybody point to a solution for his issue? Thanks! We need ... | I think [CODE] is beyond the end of established UTF-8 characters. Perhaps MSSQL allowed, but MySQL did not. Please provide [CODE] for the target table. It had better be using [CODE] for the target column. Do any of these look correct? [CODE] | 0 | 0 | 1,338 | 2018-07-30T12:52:45.563 | database_errors | dba.stackexchange.com |
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