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771,711 | No disks visible behind SAS Expander | I'm trying to hook up an Infortrend SAS shelf and I have a big issues to get the disks visible. The shelf is connected via a LSI Logic SAS1068E B3 HBA with current IT firmware, and 2 SAS cables. The card is recognized by kernel and until this point it looks quite okay Unfortunately only the expanders inside the shelf a... | After messing around with this topic a couple days I figured out, that it's probably not possible to use this shelf as JBOD without putting some serious investment into reverse engineering. Even though you'll get to see the SAS expanders, theres no way to reach the disks The datasheet from Infortrend describes this she... | 1 | 0 | 1,423 | 2016-04-20T13:19:34.847 | infrastructure | serverfault.com | |
1,028,823 | Appengine Flex unable to connect on cloudSQL mysql DB | I have a Java application running on GAE Flex but it's falling to connect on my private mysql instance with the error: at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at com.googlecode.flyway.core.util.jdbc.JdbcUtils.openConnectio... | It could be related to this . Maybe the solution is posted here 7.1 Quote: "The Google Cloud SQL API must be enabled in your GCP project. To do that, go to the API library page of the Google Cloud Console, search for "Cloud SQL API", click the first result and enable the API. " | 0 | 0 | 728 | 2020-08-04T14:08:37.200 | database_errors | serverfault.com | |
432,361 | Looking for way to log process terminations on OS X (Mac) | I'm looking for a way to log all process terminations on my Mac (OS X 10.6.8). (And see pid, timestamp, process name) I've implemented something similar for HP-UX, but it required a kernel-level driver and intercepting several variations of "exit()" (the normal one, and the one invoked on behalf of a process while it's... | [CODE] appears to already be logging the PID: [CODE] which relates to the dmesg message: [CODE] | 3 | 2 | 871 | 2012-09-26T21:33:21.927 | infrastructure | serverfault.com | |
1,032,999 | I'm trying to create (SSL/TLS) certificate with AWS, failing | I'm trying to request a (SSL/TLS) certificate with [CODE] . but getting this error: Something went wrong Cannot request more certificates in this account. Contact Customer Service for details. I tried to make a case [CODE] , but it stays unassigned for 24 hours. I have never hit a limit of 100 certificates. It started,... | That seems like a glitch in their system, that's hardly something we can help with over here. Your best bet - subscribe to a Business support for a month (~ $100/month) and get them to have a look at it. | 0 | 2 | 521 | 2020-09-08T01:21:01.943 | infrastructure | serverfault.com | |
815,925 | P_CONTROL_HARD_RESET_CLIENT_V2 when trying to access an OpenVPN server | I would like to connect to an OpenVPN server from an Ubuntu host which also serves as the firewall for other internal connections (two APs and several virtual machines running on that server). My connection hangs at [CODE] A [CODE] of the connection shows that [CODE] I can connect from the same prompt to any service, a... | Somehow late but the reason was that an adaptative firewall was blocking the traffic as soon as it "recognized" it as OpenVPN (probably based on specific packets) | 1 | 0 | 10,017 | 2016-11-19T21:53:55.323 | infrastructure | serverfault.com | |
417,967 | What are the advantages of checking for objects with Objects.nonNull()? | Our project changed the object existence checks from [CODE] or [CODE] to [CODE] or [CODE] . I never got an explanation why that should be better, that's why I ask. I’ve been programming in Pascal, C, Perl, Java for a long time and have always checked for inequality with [CODE] . This systax is pretty common and any pro... | Ask the people who made the change in your project. I'm with you, there is no advantage to doing this everywhere, and the Javadoc pretty much implies it as well - the methods were created to be used via method references. | 4 | 7 | 4,451 | 2020-10-15T13:52:43.497 | api_errors | softwareengineering.stackexchange.com | |
168,694 | Outer Join suppressing Index usage? | I have a client program that is executing a query against a View that outer joins one table to another. The performance is bad and I have been trying to tune it by adding the right index. The query in question is only actually using the second table, so I have been testing against that table directly. I found (several)... | This is mostly a partial answer to part 1 with some speculation. You and I know that the following query: [CODE] Is equivalent to this query: [CODE] However, that doesn't mean that Oracle knows that the two queries are equivalent. The equivalence of the two queries is required for Oracle to be able to use the [CODE] in... | 7 | 2 | 7,994 | 2017-03-30T21:29:51.630 | database_errors | dba.stackexchange.com | |
998,406 | hot added vCPU for linux not used fully in top command | just recently we started to see high CPU pressure on one of our machines. All our machines are running Linux Debian and we use vmware under the hood. We have hot added new CPUs and they're online in the system [CODE] However when we use top to check new CPUs the new ones are not as busy as the other ones. Check the scr... | It seems that the software you are using decides how many processes to execute only at startup and in practice doesn't notice there are new cores available. You can probably restart only the application and not the entire machine. Maybe you should provide more information about the software you are using. It could also... | 0 | 0 | 352 | 2020-01-10T08:38:35.043 | infrastructure | serverfault.com | |
721,856 | Is it possible to have a reverse proxy and forward proxy running on the same interface? | I'm wondering if it's possible (using any widely available proxy software like mod_proxy, pound, or squid) to have a reverse proxy for incoming connections on an interface and a forward proxy for outgoing connections on the same interface. | Of course it's possible. Why wouldn't it be? They won't be able to listen on the same IP:Port pair of course, but that is easily remedied. | 0 | 2 | 398 | 2015-09-11T20:50:54.113 | infrastructure | serverfault.com | |
953,505 | Suse 11.4 no volume group found | I'm using suse 11.4 on a vmwareplayer 15. I had an issue of / been 100% full and also didn't reboot the machine for a long time. After I cleaned some space I rebooted the machine and now I get these errors : [CODE] After i booted to single mode I tried this: [CODE] It's like all vg's and lv's are gone. (vgscan lvscan p... | When a system will not boot, rescue it from another environment. Boot rescue media, or boot a different VM and attach a copy of their disks. Copy off important data. Optionally, attempt to fix LVM. Or, build a new host and restore from backups. | 0 | 1 | 737 | 2019-02-12T10:30:00.160 | infrastructure | serverfault.com | |
55,950 | VlookUp: how to loop it? | I am not an experienced user of Excel because I usually use python but I am obliged to use it this time. This is the big picture of my case. The problem is: I have a sheet with a column with some words, another column with the translation of these words in a non standard written way because they are written using numbe... | If you use a combination of [CODE] and [CODE] , you can let the desired look up array vary automatically as you drag the function across your columns, which is an alternative to manually fixing the look up column in [CODE] . If you wish to continue with [CODE] , you could potentially add column numbers to the top of yo... | 0 | 1 | 4,028 | 2019-07-18T18:59:27.450 | data_quality | datascience.stackexchange.com | |
196,379 | Postgres 9.6 AWS RDS loadbalancing | I have an legacy application that has a number of very complex queries that take significant time and resource to execute. Rather than rewrite the application I am looking at the possibility of doing some form of load balancing. I firstly looked at writing a script with [CODE] to determine if the database is able to re... | Is the complex query read-only ? The answer to that kinda determines the solution. You could do this with haproxy maybe. See https://githubengineering.com/context-aware-mysql-pools-via-haproxy/ for inspiration on how to measure the load of your backend (this is mysql but same idea works on pgsql) You could probably get... | 3 | 1 | 376 | 2018-01-26T22:01:48.563 | warehouse_errors | dba.stackexchange.com | |
159,837 | Can't start system_health extended events session | On some SQL Server instances, (I did not find a pattern yet), when I try to manually start this session, I get the following error : For target, "5B2DA06D-898A-43C8-9309-39BBBE93EBBD.package0.event_file", the parameter "filename" passed is invalid. Target parameter at index 0 is invalid (Microsoft SQL Server, Error: 25... | First, identify the folder that is the problem. In SSMS, with results set to grid, run the following query: [CODE] Should return one row, and you should be able to click on it from the grid result. This will open a new tab with an XML document, which should look something like this: [CODE] If the file name does not inc... | 2 | 5 | 3,935 | 2017-01-03T16:01:42.707 | database_errors | dba.stackexchange.com | |
951,403 | Does the ReFS filesystem reserve space for itself? | I recently formatted a single disk from the line of new 14TB Seagates on Windows 10 with ReFS, with a 4K block size, to use the full capacity available and noticed that out of the approximately 12.7TB it presents as usable that it already reports that 100GB has been consumed though the disk is empty. I checked in disk ... | 12.73TB (14,000,512,296,960)... Microsoft is reporting 12.7Tib, Seagate sells 14TB drives, this is the same thing in different units. 14x10^12 = 12.73x2^40 | 4 | 1 | 1,274 | 2019-01-30T01:02:13.483 | data_quality | serverfault.com | |
322,000 | Postgresql - long column select/projection list leads to poor performance | I have a rather structurally "simple" query that consists basically in these clauses: [CODE] As someone can tell, the column projection is rather large. When I say the query is "simple", I mean it has few (3) sub-queries in [CODE] clause that are pretty straightforward. Other than that, it doesn't have CTE's, sub-selec... | It turns out that the almost the whole processing time in this case is related to JIT the query. Setting both session or system-wide [CODE] flag [CODE] solved the issue. Special thanks to @jjanes who guided towards the use of a profiler (which I was skeptical, I confess). The [CODE] top 3 lines were: [CODE] | 1 | 1 | 186 | 2023-01-11T18:58:24.583 | pipeline_ops | dba.stackexchange.com | |
844,162 | dnsmasq ignores queries from non local network | I've configured a dnsmasq service into my servers network. I can query it correctly from local server and "brothers" servers in the network. [CODE] However when I try to query it from my dev machine (range 172.144.x.x) I get no response. Ports are correctly open (tested with nmap and telnet). [CODE] It seems like the f... | The firewall rules is the culprit it seems. Check the [CODE] list: [CODE] . Make sure UDP is allowed as well. | 0 | 0 | 8,203 | 2017-04-12T16:03:10.913 | infrastructure | serverfault.com | |
314,894 | Windows cannot access the file gpt.ini for GPO error | One of my users had a BSOD this morning, so I looked at the event log to see what could be the cause. I didn't find anything obvious related to the BSOD, but I did find something else which causes me some concern. He had the following in his application event log: Windows cannot access the file gpt.ini for GPO cn={2FE8... | More likely is some kind of DNS issue. Group Policy settings are pulled from: [CODE] If the client can't turn domain.name.in.full into something that Windows can connect to, you'll get this kind of problem. A couple of tests to try out: nslookup for domain.name.in.full If it returns an IP address, or better yet a list ... | 1 | 3 | 8,713 | 2011-09-23T16:00:32.890 | infrastructure | serverfault.com | |
45,341 | Mysql Deadlock on update query on same row | My server is experiencing occasional deadlocks on two update queries on same row both using index (primary key). The conflicting queries are: [CODE] and [CODE] I could not figure out how to make sense from the following log. The Mysql logs say the following: [CODE] | As an immediate solution, you can try and restart the victim transactions. Use the information on the deadlocks provided here to fine-tune your application to prevent them from occurring again. The following are general guidelines to avoid deadlocks: Commit your transactions often as smaller transactions are less likel... | 4 | 1 | 9,752 | 2013-06-27T06:56:49.510 | database_errors | dba.stackexchange.com | |
607,397 | grub2/initramfs disaster recovery | One of my ubuntu 12.04 is a vm on vmware ESXi host. It has separate boot and root partition. One developer did fsck on the live root partition by mistake and this vm can only boot to initramfs mode with some errors - "/proc is not found". My understanding is root partition inode table was damaged causing read error. Th... | If you are setting an NFS root, you need to debug why the NFS root is not getting mounted. Start by booting into single user mode without NFS and see if you can manually mount NFS and/or proc/dev. Also, see article below that describes the order in which file systems are mounted with initrd. https://www.kernel.org/doc/... | 0 | 0 | 1,066 | 2014-06-23T20:46:28.660 | infrastructure | serverfault.com | |
76,032 | Update table from another database | I have two databases database_a & database_b with the exact same structure, but different email data. How do I update all of database_b's email field with the ones from database_a based on the clients id number? [CODE] | Use an UPDATE JOIN [CODE] or [CODE] Give it a Try !!! | 1 | 3 | 5,004 | 2014-09-08T20:14:40.560 | warehouse_errors | dba.stackexchange.com | |
556,898 | Postfix Email redirection | Let's say i have a postfix setup on my domain , abc.com i want to redirect all emails coming from *@dfc.com to user1@abc.com. If original email contains user2@abc.com as TO , after redirection , i dont want to see that email in user2's inbox but user1's inbox. Is it possible to do this in postfix ? i've been reading th... | i found the solution , you need to have an extra proxy for modifying email content here is an sample of a proxy server code. http://code.activestate.com/recipes/577260-multi-threaded-smtp-proxy/ | 0 | 0 | 78 | 2013-11-22T22:11:22.440 | infrastructure | serverfault.com | |
735,230 | Why can't the logstash syslog_pri filter see the priority in syslog messages | I'm running LS 2.0.0, and I've noticed an issue where the syslog_pri filter doesn't detect the priority at the start of my syslogs. My filter config is as follows: [CODE] This should be able to pull the PRI from the following logs, but it fails, and reverts to the default (13) priority for all messages: [CODE] As you c... | In looking at the docs for the [CODE] filter, it seems it's looking for the priority in a field called [CODE] , as opposed to the raw message. Given that you're running that filter before groking the line, it doesn't have anything in that field and as such is returning priority 13 (user.notice), as outlined in the docs... | 1 | 2 | 3,674 | 2015-11-10T12:33:00.147 | infrastructure | serverfault.com | |
507,041 | What's this odd logon failure I see every day? | I'm having something weird happen on a Windows Server 2008 R2 server. Every day at exactly 9:00 PM, an Audit Failure is registered in Event Viewer, saying that an account failed to log on for reason "Unknown user name or bad password.". The weird part is that the Account Name is a 161-character string, beginning with @... | As it turns out, that was the Backup scheduled task failing to start. Apparently, at some point the Group Policy setting "Network access: Do not allow storage of credentials or .NET Passports for network authentication" got enabled. This was disallowing storing the credentials for use with the scheduled task, as seen i... | 3 | 2 | 2,924 | 2013-05-12T07:03:48.937 | api_errors | serverfault.com | |
133,473 | Some URLs fail to load on Windows web portal | I’m working in a large data center and have been assigned to troubleshoot and issue with a windows (IIS) web server that acts as a portal for a customer of the data center. This portal server is on a DMZ at the local data center. I don’t have access to the portal desktop and am relying on an off-site administrator to w... | The ultimate resolution to this problem was found in the NIC settings on the portal server. Specifically, the TCP parameters in the registry. I did a wholesale reset using netsh (netsh int ip reset resetlog.txt). These parameters were identified as being of most interest; "TcpMaxDataRetransmissions"=dword:0000000a "Def... | 0 | 0 | 217 | 2010-04-18T03:25:54.277 | infrastructure | serverfault.com | |
76,204 | Perl Script for conky. Permissions problem | I wrote a simple perl script to change conky background and download some data from the web. This script works fine when I start conky by myself, but it doesn't work when I restart my system and conky starts automatically. I don't know where the problem can be, since the file has r-x permissions for all groups and user... | First guess, your script calls some other command and system startup has a different PATH environment variable. It would be really helpful if you could post the script. Otherwise, all anybody can do for you is guess. | 0 | 1 | 209 | 2009-10-20T02:28:40.593 | infrastructure | serverfault.com | |
109,105 | Windows Sharepoint Services Login Problem | I am wanting to try out Windows Sharepoint Services on my Windows 2008 Box at home. The Windows 2008 Server is a domain controller. I have installed IIS 7, Active Directory, SQL 2008 Standard and downloaded Windows Sharepoint Services 3 SP2. I setup first hostnames in the DNS Server called sharepoint, I went into IIS7 ... | You could be running into a local loopback problem. The problem occurs when the website uses Integrated authentication, and has a name that is mapped back to the local loopback address. The fix is to go to the following registry key: [CODE] Add a new DWORD value named DisableLoopbackCheck and give it a value of 1. Afte... | 3 | 2 | 3,725 | 2010-02-03T10:01:47.037 | infrastructure | serverfault.com | |
25,531 | Vista Windows Scheduler task starts failing, and then never works again | I have a scheduler task setup to run every hour, to update a web server. It runs each hour correctly. But after a reboot, the task always starts to fail: The error is: [CODE] The task requires admin privileges and is setup like this: "When running the task, use the following user account" (myserver\Admin) "Run whether ... | According to several forum posts I found, there seems to be a Vista problem with storing User credentials for the task scheduler. Symptom (eventlog): Event ID: 101 OP Code: 6619136 Error Value: 2147943726 Possible Solution: If the "Run whether user is logged on or not" option is used: check the box on "Do not store pas... | 2 | 1 | 4,640 | 2009-06-14T15:26:54.583 | infrastructure | serverfault.com | |
987,933 | Restricting RDP users to certain machines on Windows AD | We need to add specific users to our on-prem part of production that uses traditional Windows Server AD. The users should be able to RDP into one machine (MachineX) and only that. I thought this would be a simple issue of limiting machines in the AD center (as on image) using the "Log on to.." dialog. I've added both t... | The user will also need to be able to log on to the machine from which the RDP connection is initiated. The account must authenticate at the connecting computer first before the RDP session will be initiated. If you prevent the account from logging on to the source, the RDP will never be initiated. | 2 | 4 | 2,338 | 2019-10-14T14:03:16.953 | infrastructure | serverfault.com | |
158,499 | Postgres: How is SET NOT NULL "more efficient" than CHECK constraint | In PostgreSQL docs for Constraints , it says A not-null constraint is functionally equivalent to creating a check constraint [CODE] , but in PostgreSQL creating an explicit not-null constraint is more efficient. I'm wondering What exactly does it mean by "more efficient"? What are the detriments of using [CODE] instead... | My wild guess: "more efficient" means "less time is required to perform the check" (time advantage). It may also mean "less memory is required to perform the check" (space advantage). It might also mean "has less side effects" (such as not locking something or locking it for shorter periods of time)... but I don't have... | 24 | 19 | 3,743 | 2016-12-18T17:35:14.987 | database_errors | dba.stackexchange.com | |
82,019 | Adventures in Drupal multisite config with mod_rewrite and clean urls | The university where I work is planning to offer Drupal hosting to staff/faculty who want a Drupal site. We've set up Drupal multisite with clean urls and it's mostly working except for some weird redirects. If you have two sites where one is a substring of the other then you'll randomly be redirected to the other site... | This seems to work: [CODE] Thanks to everyone who looked at it. | 0 | 1 | 1,294 | 2009-11-06T00:58:55.153 | infrastructure | serverfault.com | |
195,959 | What are the warning signs that a MySQL table might be corrupted | For some reason, it's not the first thing I think of when diagnosing very strange table errors. I had an issue when doing an [CODE] I'd wind up with only one record. [CODE] said I should have 28 rows, if I take out the [CODE] I have 28 rows. Well, the problem was table corruption, but unlike some errors where MySQL goe... | Run [CODE] on the table. | 4 | 1 | 301 | 2010-10-28T21:03:18.377 | database_errors | serverfault.com | |
780,385 | Windows RDP connection fails within 30-60 seconds of successful connection | Myself and several other users are having issues staying connected through an RDP session to one of our servers. Server lives in a subnet behind a proxy (cloud-based) Users connect to network via VPN server on opposite side of proxy Connections work and do not disconnect when made from server within same subnet Issues ... | I had a similar problem. I resolved it by upgrading the driver on my NIC. Perhaps that will resolve your issue, too. | 0 | 0 | 481 | 2016-06-01T20:17:31.890 | infrastructure | serverfault.com | |
52,432 | JMeter: Script in VM Vs Azure Pipeline | Testing web based application for Performance Testing. Servers are physical servers. Script is running without errors in vm and in vm by using Host Entry files is to pointing out to PREUAT Enviornment. Same script pushed into Azure Pipeline but getting as **Non HTTP response code: java.net.UnknownHostException/Non HTTP... | The error means that JMeter's HTTP Request samplers cannot reach https://aviarywebui.com host. I cannot access it as well: and it's not only me : So if the website requires a VPN connection - you need to install VPN client onto Azure runner machine first and connect to the VPN before starting the test. If the website i... | 0 | 0 | 8 | 2024-03-14T13:31:28.993 | pipeline_ops | sqa.stackexchange.com | |
239,012 | simple network between xp & 7 with cross cable problem | i have a simple network between xp & 7 windowses with cross cable (2 pc home)... ===================================================================== the one with 7 is mother and have 2 lan device (onboard + pci) A. onboard is like this when u go to tcp/ip v4 properties:(4 adsl internet) obtain an ip... preferred dns ... | I assume from what you are saying that Cougar is your Windows 7 computer. If so the problem you have lies with the changes in security with Windows 7+. You will need to ensure that the windows 7 firewall is configured to allow "File and Print Sharing". You will also need to ensure that you set the folders you wish to s... | -1 | 0 | 188 | 2011-02-23T05:34:49.153 | infrastructure | serverfault.com | |
469,031 | Puppet - groupid (gid) for mysql group differs between prod and dev | I just puppetized mysql and ran into a weird issue where the gid for the mysql group on dev differs from production. Apparently on production I have a user that doesn't exist on the dev environment and is currently claiming the gid I wish to use for the mysql group. My question is, what is the best approach for ensurin... | My guess is you are doing something like [CODE] Where 500 is the group id of mysql? Well if you don't care that the group id's are a mis-match then just use the name [CODE] EDIT Same goes for uid.. if you don't specify one for the user the OS will pick one for you. So if you don't care that uid's match up.. then remove... | 2 | 2 | 389 | 2013-01-14T21:00:31.797 | database_errors | serverfault.com | |
649,266 | WDS "Configure Server" fails. "Share name is already in use on this server" | I had WDS installed on this particular server (running Server 2012 Standard), removed it for various reasons, and am now trying to reinstall it. When I go through the initial configuration process for the server, I keep getting the error "The share name is already in use on this server." at the end. It creates the 'rem... | Figured it out. I'm a goof. I had tried using [CODE] before to see if what I was using was still in use from the previous WDS install, and simply didn't notice the "REMINST" share at the bottom of the list. Bleh. A simple [CODE] solved my issue. We're back in business. | 1 | 2 | 11,207 | 2014-12-04T19:40:17.243 | infrastructure | serverfault.com | |
665,296 | Can I use both RSA and ECC certificates in apache? | If I simply use "SSLCertificateFile" and "SSLCertificateKeyFile" twice, the certificate chain is broken for the first one. Can I use both RSA and ECC certificate which is issued from different intermediate CA certificate? ================== Update: OpenSSL 1.0.2 Solves the problem. Just use "SSLCertificateFile" and "SS... | This is possible depending on both the Apache version and the OpenSSL version. Running ECC & RSA certificates in parallel on Apache using different intermediate certificates requires Apache 2.4.8+ and OpenSSL 1.0.2+. The [CODE] entry added support for intermediates as of Apache 2.4.8. OpenSSL adds the ability to load i... | 6 | 3 | 2,869 | 2015-02-05T15:38:26.680 | infrastructure | serverfault.com | |
1,001,903 | Google Admin SDK authentication with service account | My team is currently developing an application to list my company's domain users in GCP, using the Admin SDK, for onboarding and offboarding purposes. We're using a service account to do this and we've have added the admin.directory.user.readonly scope, in the Google Admin's advanced settings, to it. The Admin SDK API ... | You need to perform domain-wide delegation and impersonate one of your users if you want to authorize using a service account. The service account itself isn't part of the G Suite account, so you must impersonate a user who is part of the G Suite account in order to access the directory of that account. oauth2l doesn't... | 1 | 1 | 1,784 | 2020-02-05T15:26:03.723 | api_errors | serverfault.com | |
217,746 | Rails won't install on Ubuntu because of builder | Can someone explain why gem thinks I don't have builder >= 2.1.2 even though I clearly have 3.0.0? [CODE] | The [CODE] designation means "greater than or equal to version 2.1.2, but not including the next major version. With a three-component version like 2.1.2, this means builder 2.1.2, 2.1.3, 2.1.4, etc. are all valid but 2.2.0 or 3.0.0 would be invalid. | 1 | 2 | 272 | 2010-12-31T20:56:33.250 | infrastructure | serverfault.com | |
1,130,313 | What is the name of the string that a service returns when you establish a tcp connection via telnet? | If you telnet to an ssh server, it will establish a connection and return a string, something like [CODE] etc. Something similar happens if you connect to a mysql server. What exactly is the name of the string that the service returns? It's not a "header", since we aren't talking about http(s) here. Similarly, it's als... | What exactly is the name of the string that the service returns? It's not a "header", since we aren't talking about http(s) here. This rfc4253 refers to it as the "identification string" in section 4.2 Protocol Version Exchange. Similarly, it's also possible to send commands via telnet, for example, you can connect to ... | 0 | 1 | 60 | 2023-05-04T00:33:02.220 | database_errors | serverfault.com | |
121,320 | Cannot log in to server after SSH port change | I was doing fine with default ssh port 22 on my remote server then i read somewhere if i change the port to 2222 at least i can stop some automated login attempt to my ssh server so i've decided to change the port on my server What I've Changed System: Ubuntu 8.04 32bits with sudo apt-get install ssh [CODE] change port... | How are you sshing into the server? What command are you running / program are you using? Are you using Putty (Windows). If you are using the ssh command line program, your ssh command should be [CODE] unless you have edited [CODE] on the client. | 1 | 1 | 2,671 | 2010-03-10T16:31:47.713 | infrastructure | serverfault.com | |
696,167 | Pacemaker ClusterIP stops working after 15 minutes but is still running | I am running Corosync and Pacemaker via a cman stack, in an active-active setup delivering web pages, and I've hit a brick wall. I'm using the IPaddr2 resource agent to have an IP that is used simoultaneously by both nodes, and after about 15 minutes, it stops working. It is still running according to PCS, the ClusterI... | By default the resource agent IPaddr2 only check if the ip address is configured, you can check this reading [CODE] If you want to monitor the connectivity using icmp protocol, you can read this link [CODE] | 0 | 0 | 1,104 | 2015-06-02T19:01:01.870 | infrastructure | serverfault.com | |
378,162 | MS Exchange: Send from any address in domain / catchall | I receive all email to my domain regardless of user via a catchall address. I would like to be able to send mail from outlook via any ad-hoc address I create. Eg, if there is a new website i might sign up with websitename@mydomain.com. I would receive the email via a catchall. But I need to be able to easily send via t... | I suspect the same thing. You can't send as a user that doesn't exist. It's a typical error message, with lots of information, none of it useful. It makes sense to simply create the user before you send as that user. | 2 | 0 | 325 | 2012-04-10T15:51:31.257 | infrastructure | serverfault.com | |
661,603 | nginx suddenly redirecting everything to 403 page, can this be debugged or traced? | I'm not sure what happened to my [CODE] install. Suddenly all page requests are being redirected to the [CODE] page. Yesterday I tried to add a user agent to block, restarted service from that point everything was being sent to 403. I backed out that change, restart [CODE] and everything is still being directed to the ... | The issue was caused by upgrading CentOS from 6.5 to 6.6 and how SElinux allows content type through. With this upgrade SElinux by default only allows [CODE] content through (similar to how they treat apache), and because I store all my webcontent in [CODE] these user created folders did not have content label set auto... | 3 | 2 | 2,357 | 2015-01-22T17:12:54.460 | database_errors | serverfault.com | |
489,232 | Can the Performance of one VPS Node being affected by other VPS Node? | I am thinking about getting a VPS node from a hosting provider. But I am very unclear as to how the VPS node really works. Assuming that the hosting provider promises Dedicated CPU of 2Ghz, 2 CPU Cores, Dedicated RAM 1000MB, does it follow that I will always get it, assuming that the hosting provider is not cheating me... | Yes. Yes. Yes. Yes. Pick a reputable provider and if you are unsatisfied, change providers. If the provider is reputable, your VPS should get an acceptable level of service, what you paid for, no matter what their other clients are doing. One other thing -- CPU and RAM are important, but disk I/O is important too. Whil... | 2 | 5 | 376 | 2013-03-19T11:59:09.877 | infrastructure | serverfault.com | |
1,107,352 | /root/.ssh/config: line 2: Bad configuration option: sapiauthentication | My virtual environment/system: [CODE] I unable to figure out how to I disable [CODE] [CODE] Please advise) Thank you in advance! | You can't disable [CODE] but you could disable [CODE] . | -2 | 1 | 150 | 2022-08-04T02:39:40.933 | api_errors | serverfault.com | |
171 | How to achieve a smooth transition from “the one big VCS repository for all products” organisation model to the “many small VCS repositories” model? | It is a common scenario that the codebase of a product held by a repository in some VCS system evolves to a point where that codebase can arguably be seen as containing several products. Splitting the codebase across several VCS repositories, each dedicated to a single product, can leverage several benefits (see Benefi... | It is a fascinating question for which real answers may not actually exist; I appreciate that while you tried to keep the question contextualized on the VCS, it naturally scaled by itself up to infrastructure design and implementation planning. Though, it seems many of us are working of this kind of transitioning, whic... | 15 | 9 | 213 | 2017-03-01T13:37:08.573 | pipeline_ops | devops.stackexchange.com | |
445,405 | How to properly design database in accordance with DDD | My [CODE] layer contains below model: [CODE] Later, the [CODE] layer uses [CODE] . And it's entity for it: [CODE] Notice that the [CODE] from model is different from [CODE] in entity. The second property (in entity) is foreign key to [CODE] , whereas the [CODE] is client identifier in "logical sense", used in business ... | Notice that the string ClientId from model is different from int ClientId in entity. The second property (in entity) is foreign key to Client, whereas the string ClientId is client identifier in "logical sense", used in business logic. They are not the same. The easier would be to have a single ID in the domain. It's f... | -1 | 1 | 1,326 | 2023-05-05T13:57:46.153 | api_errors | softwareengineering.stackexchange.com | |
254,844 | Error while running sp_blitz in 2008 SQL Server and lower versions | I have created an SSIS package to run sp_blitz in my production servers. The stored procedure runs fine for servers having a version higher than 2012 but fails for 2008 and 2005. Please find the subsequent error message that I received while running the package. [SP Call [50]] Error: SSIS Error Code DTS_E_OLEDBERROR. A... | If your goal is to log sp_Blitz's output to table , use the @OutputDatabaseName, @OutputSchemaName, and @OutputTableName parameters as described in the documentation . For example, this will write the sp_BlitzOutput to a table named DBAtools.dbo.BlitzResults: [CODE] If your goal is to call SQL Server 2008 stored proced... | 1 | 2 | 293 | 2019-12-05T05:38:38.043 | database_errors | dba.stackexchange.com | |
68,343 | Database design Problem for the web-app | Hello I am in a problem of designing a web-app database schema. Suppose I have 10 shops and every shop gives deals on every different day Sunday, Monday and so on and for limited time period like some shops give deals from 4 to 5 pm, some 8 to 10 pm, 4 to 10 pm. Apart from that I have few categories on which a shop wil... | From what I understand of your problem your "duplicity" is fine. If your saying that all of the shops act totally independently then yes in your example shop E and shop D might have the same data but the data is not related so it might look like a duplicate, but I would not consider that a duplicate. Another example, I... | 0 | 1 | 120 | 2014-06-16T18:26:48.373 | warehouse_errors | dba.stackexchange.com | |
423,157 | How can I configure apache to send an email on every HTTP error 500 | I have some server applications running on apache2; Ruby on Rails, PHP and others. In all cases I would like apache to send me an email whenever apache responds a HTTP error 500 Internal server error. How can I do that? | You can create a custom 500 file. Assuming you are using Apache you would add the following line to your .htaccess [CODE] This code basically tells the server that if a user encounters a 500(internal server error) Error to display errorfilename.php. In this PHP file you can add code to email you when a user gets to the... | 2 | 4 | 3,281 | 2012-08-31T05:43:41.890 | api_errors | serverfault.com | |
326,700 | cqlsh not working, getting "ImportError: cannot import name ensure_text" | [CODE] | Without relevant details, it's impossible for us to provide you with a meaningful response. All I can say is that I suspect you have an environmental issue where you have an old Python [CODE] library installed on your machine that doesn't have the [CODE] and [CODE] functions added in v1.12.0 . A friendly reminder that ... | 0 | 2 | 233 | 2023-05-03T09:17:19.593 | warehouse_errors | dba.stackexchange.com | |
49,550 | Which hashing algorithm is best for uniqueness and speed? | Which hashing algorithm is best for uniqueness and speed? Example (good) uses include hash dictionaries. I know there are things like SHA-256 and such, but these algorithms are designed to be secure , which usually means they are slower than algorithms that are less unique . I want a hash algorithm designed to be fast,... | I tested some different algorithms, measuring speed and number of collisions. I used three different key sets: A list of 216,553 English words archive (in lowercase) The numbers [CODE] to [CODE] (think ZIP codes, and how a poor hash took down msn.com archive ) 216,553 "random" (i.e. type 4 uuid ) GUIDs For each corpu... | 1,651 | 2,910 | 831,385 | 2011-02-19T00:03:26.663 | api_errors | softwareengineering.stackexchange.com | |
1,089,100 | Access Kubernetes Dashboard Via HTTP Instead of HTTPS | Question How can I enable HTTP requests? I have a primary web server that is a proxy and sends HTTP requests to the MicroK8S server but cannot due to the HTTP error. Install command used: [CODE] Infrastructure [CODE] Problem I have a MicroK8S server setup using this command: [CODE] I have also edited the dashboard serv... | Answered in Slack, the default addon doesn't pass [CODE] so the insecure port is accessible only on localhost: https://github.com/kubernetes/kubernetes/blob/b5103f61175a10d6b066eeb3ef603263f9b61bd4/cluster/addons/dashboard/dashboard.yaml#L195-L196 You can find all options documented here: https://github.com/kubernetes/... | 4 | 2 | 9,526 | 2022-01-05T20:26:23.320 | pipeline_ops | serverfault.com | |
314,864 | What is the bottleneck in SELECT from InnoDB tables? | For an InnoDB table with 500 million rows (on a separate NVMe drive), [CODE] takes about 3 min. [CODE] shows [CODE] of about 2M reads/s, which is consistent with the time the query takes. It also shows [CODE] of about 3,000 reads/s. This is similar to that read from [CODE] , which also shows the read speed of about 50M... | Rate Per Second = RPS Suggestions to consider for your my.cnf [mysqld] section to minimize bottlenecks [CODE] There are likely additional opportunities to be considered. | 0 | 1 | 261 | 2022-07-26T13:15:04.527 | database_errors | dba.stackexchange.com | |
463,011 | Poweredge 2900 Failed to boot utility partition | How to (re)install utility partition for a Dell Poweredge 2900? Where is installed this? | Unless you already have an image of the utility partition, you don't/can't reinstall or recover it. However, everything on the utility partition is available for download from Dell, so you'd download the diagnostics tools/utility you're looking for from their support site - this is the page for the PE2900 - burn it to ... | 0 | 1 | 2,040 | 2013-01-04T15:05:44.003 | infrastructure | serverfault.com | |
986,498 | Production-ready Node/React app - memory utilization issues | I have an app that is deployed on AWS using ECS and recently facing some issues with memory utilization. To give you a little background: Our app is Node.js (specifically Sails.js) backend with React used for front-end In the ECS task definition, we've set the memory to 900 and cpu to 600 units respectively Instance ty... | Is this normal for a production Node/React app? It really depends on the app. A hello world app will be drastically different from a deep learning training app. Must we modify instance type and increase resources? Are you facing problems with the performance from a user perspective? eg does the app hang while you're us... | 1 | 0 | 269 | 2019-10-02T12:04:46.423 | database_errors | serverfault.com | |
370,166 | multi-user rvm gem install failure when called from CloudFormation::Init | I've taken an Amazon Linux AMI (based on CentOS) and installed RVM (1.10.3) to it in multi-user fashion (see {1} below). I used that to install ruby 1.9.3-p125, rubygems 1.8.17, and bundler 1.1 as the baseline requirements for most things I'm going to be using the instances for. I've captured that instance to an AMI, a... | So the answer lies in that during CloudFormation::Init, [CODE] is run by the root user, within a stripped-down environment, and uses [CODE] as its shell instead of [CODE] . Being mostly a Windows guy for the last ten or so years I initially didn't realise (remember!) that. I tried various things, but the thing that wor... | 1 | 2 | 1,208 | 2012-03-15T17:19:08.420 | infrastructure | serverfault.com | |
812,007 | Cannot sign into domain - The User Profile Service failed the logon | I recently added an Active Directory Domain Controller to our network on Windows Server 2012. The domain name is software.eng.apl. I can join a Windows 10 computer to the software.eng.apl domain by selecting the Windows Start icon > System > Change settings > Change, and entering software.eng.apl in Domain. A pop-up bo... | After a few additional days of troubleshooting, I finally discovered the solution to the problem I was facing. I was able to sign into the domain using john.doe@software.eng.apl on other Windows PCs in the domain. I came to learn that there can be an issue with the C:\Users\Default folder on the client PC. To resolve t... | 3 | 1 | 13,851 | 2016-10-29T03:55:15.793 | infrastructure | serverfault.com | |
765,593 | ubuntu 14: how to configure bridge for bonded interface? | We have a server connected to 2 switches via two NICs. On each NIC are 2 VLANs, management and production. Right now we only have one switch connected, so haven't setup the spanning tree etc. We have LXC installed, and want to bridge (rather than NAT) the XLC containers (so they are on the same subnet as the host). Whe... | Here is a similar setup that is working for a docker host. Hope it points you in the right direction. [CODE] | 0 | 1 | 1,587 | 2016-03-23T12:29:46.623 | pipeline_ops | serverfault.com | |
568,289 | Apache becomes unconnectable after certain time? | After maybe ~20 minutes it seems like my apache server becomes unconnectable. By unconnectable, I mean if I [CODE] any page, it just results in nothing for 2-3 minutes and then nothing ever shows up. I'm forced to restart apache to make it usable. The actual box itself seems fine, since I'm always SSH'd in... so I thin... | Have you checked your logs? access.log and error.log? | 0 | 1 | 43 | 2014-01-19T02:56:01.120 | infrastructure | serverfault.com | |
274,212 | What does tcp_orphan_retries set to 0 mean? | Does setting tcp_orphan_retries to 0 mean there is no limit to retries, or does it mean that it won't retry at all? | It doesn't mean "try forever", it means "don't try at all." This is the server trying to politely tell the client that the server is getting ready to close his socket, and if it would please do an orderly disconnect, or send some more data, that would be wonderful. It will try X times to get the client to respond, and ... | 8 | 4 | 8,267 | 2011-05-26T20:15:11.137 | infrastructure | serverfault.com | |
364,093 | Tomcat 6 behind Pound reverse proxy | I'm trying to run Tomcat as standalone web server behind Pound. Pound is already used to terminate SSL connections for some other machines and so I'd thought it would also do it for the Tomcat server as well. My problem is that I can't configure Tomcat to handle getting proxy-ed by Pound. Standard connector configurati... | It seems you want to terminate SSL on Pound, and then send all requests to Tomcat over http. Your Tomcat connector is listening on port 8080. Try altering your Connector so that proxyPort="443" [CODE] There is no need to concern yourself with port 8443. If you were terminating SSL on Tomcat, then this is the default li... | -1 | 0 | 2,187 | 2012-02-27T12:24:39.443 | infrastructure | serverfault.com | |
1,101,293 | How to fix script config should be a string or a nested array of strings up to 10 levels deep? | With below pipeline job, I am getting syntax error. gitlab error [CODE] Some one suggested to keep the : part in double quotes but it is already part of it. [CODE] | If you surround the entire command with ' ' brackets this should rectify the issue. Something like the following: [CODE] Keep in mind this will not work if you are already using ' ' brackets inside the command, still working out how to resolve that! | 1 | 1 | 6,693 | 2022-05-19T07:28:49.323 | pipeline_ops | serverfault.com | |
54,189 | 403 FORBIDDEN Error in SharePoint with SQL Server datasource | I have created some custom WebParts on my SharePoint site through the use of SmartParts. My custom web parts look at 2 diff. SQL Server Datasources. When i run my code from Visual Studio 2008 is works 100% When i deploy my code on the SharePoint Page it works 100% when i run it from the server But when i access the Sha... | There are two main reasons I can think of: NTLM double-hop issue This is probably the problem. Are you: Using Windows authentication (NTLM) in your network and not Kerberos? Using impersonation to connect to the databases? (True if your database connection string contains [CODE] or [CODE] ) Then you are probably facing... | 0 | 1 | 1,888 | 2009-08-14T12:36:41.420 | api_errors | serverfault.com | |
725,182 | Preferred vs alternate DNS, DNS failover with Active Directory | Question. I have a Windows AD Domain with two DCs. I find that name resolution becomes very unreliable when my "primary" Domain server is offline. How can I fix this? I am running two Windows Server 2012 Standard servers, and both are Domain Controllers, DNS servers, and DHCP servers. On the client side, my clients are... | Question A - For detailed information about the DNS failover behaviours of various Windows OS's read here http://blogs.technet.com/b/stdqry/archive/2011/12/15/dns-clients-and-timeouts-part-2.aspx This usually works, most likely you have something misconfigured. Question B - Nslooup is a diagnostic tool for DNS resoluti... | 5 | 2 | 5,199 | 2015-09-28T02:35:40.110 | database_errors | serverfault.com | |
133,409 | How do I insert a value into table2 from a trigger on table1 | I have 2 tables with a column name [CODE] , and I'm using these 2 tables to create a view where [CODE] . If I enter a new record into [CODE] where [CODE] , but there's no record on my [CODE] table, then the trigger should insert [CODE] into my table. With the code below, the error I get is The multi-part identifier "fs... | [CODE] is a table. So try: [CODE] And you don't need to consider @Action for this... | 1 | 5 | 469 | 2016-03-25T21:18:53.957 | warehouse_errors | dba.stackexchange.com | |
442,328 | Cannot Able To Start Named services in ssh | My web application domain.com:9080/webapp was working fine. Bu i would like to remove port number from address. One of forum person suggested me http://www.virtualmin.com/node/19608 link and i changed httpd.conf file. after that my webapplication is not working i changed httpd.conf again back to normal, but got errors.... | These are two separate errors. The named one seems to be that the file for the zone is not found. You'll need to check your named configuration and then ensure the files are there (note that in a lot of circumstances named runs in a chroot environment so when it refers to /var/named/zones/X.zone the actual filepath is ... | 1 | 0 | 981 | 2012-10-25T15:08:01.820 | infrastructure | serverfault.com | |
606,250 | Communication redundancy | I have a device that is connected to a switch and is then connected to a customer controller. I have been asked to make the connection to the controller redundant because they are very far apart from one another. In the case of one connection failing there would be another to take over that is routed through a differen... | If you really don't need the added throughput of LACP you just need the configure the controller to use a master/slave (the terminology differs depending on brand/driver) or Adaptive Load Balancing. Neither of these configurations require any configuration on the switch side,but provide L1 redundancy. You can also prov... | 0 | 0 | 83 | 2014-06-18T20:57:13.890 | infrastructure | serverfault.com | |
501,679 | What Testing for Secondhand Servers? | I've recently bought a used rackmount 2950 server on Ebay to use for a specific project. I'm going to be spending a lot of time on this server, so I want to try and identify any major problems before I have everything installed and running. That way, when it all goes to heck, and I have to buy a ton of new hardware, I ... | Get your favorite battery of torture tests ready: [CODE] , [CODE] , ... See if SMART has something to say. Check for any vendor diagnostic programs. You should always keep an eye on the system's logs, and SMART. | 0 | 1 | 210 | 2013-04-22T20:47:01.820 | infrastructure | serverfault.com | |
628,693 | Logon attempts - Tons of failure audits in Event Viewer on Domain Controller (Server 2003) | This is what the event looks like, under Security logs. There are tons of them. Is someone trying to brute force the network? This server is also used as a terminal services server.. Thanks any advice / help would be greatly appreciated. Authentication Ticket Request: [CODE] Now if you notice the user, for each event l... | Yes, someone is trying to brute their way into your server. Either they have a way to tell if the login is failed for a nonexistent user or a wrong password, or they are trying an attack with random usernames and random passwords. If you are confident that all your users have strong passwords, you could ignore this. Yo... | 2 | 1 | 14,469 | 2014-09-15T20:32:22.133 | api_errors | serverfault.com | |
334,026 | How to use sp_execute_external_script to fetch USD Rate from an API and update a table? | I have this code that gives this error [CODE] Msg 297, Level 16, State 101, Procedure sp_execute_external_script, Line 1 [Batch Start Line 0] The user does not have permission to perform this action. Admin already gave me permission Also what is sys.dm_exec_query_stats | you should ask for this right: [CODE] | 0 | 0 | 55 | 2023-12-13T15:52:32.240 | warehouse_errors | dba.stackexchange.com | |
1,000,441 | SELinux, Nginx and fcgiWrap: how to allow access to fcgiWrap socket? | I am under Fedora 31 (linux kernel 5.4.13, Nginx 1.16.1, fcgiwrap 1.1.0) running with SELinux in enforcing mode (policy: targeted 3.14.4-44.fc31). My box hosts a server driven by Nginx. Part of it relies on Perl scripts. Nginx has been configured to hand over CGI execution trough FastCGI with fcgiwrap (connection throu... | I've not checked or tested this adequately -- in fact I'm pretty sure this alone wont work. I'm assuming that creation of the path [CODE] has the directory type [CODE] and I'm not certain if that is actually the case. However this should get you somewhere started. [CODE] As for the networking issues, you might just wan... | 1 | 0 | 904 | 2020-01-26T14:25:56.803 | infrastructure | serverfault.com | |
870,155 | RHEL7.4 and DRBD 9.0/8.4 Installation | I have a fresh RHEL7.4 Server installation on which I'm trying to install DRBD 9.0 from elrepo. My server is running the latest kernel: [CODE] , yet kmod-drbd90 wants to install kernel 3.10.0-514.26.2 as a dependency: [CODE] I don't have a problem with installing the older kernel. I'm just wondering what's going to hap... | This is an issue that I've sometimes had with DRDB and several other products that involve specialized kernel modules. Ultimately, my solution to this problem has always ended with me putting a hold on the kernel package to prevent unexpected breakage. Your mileage will vary based on how the distribution in question pa... | 2 | 3 | 1,814 | 2017-08-23T21:52:05.460 | infrastructure | serverfault.com | |
849,055 | Slow Failover in Squid Cluster | I created a cluster with Corosync/Pacemaker. In the cluster i've configured two resources, a virtual IP and Squid. There are 2 nodes in the cluster working on Debian 8. [CODE] displays, both nodes are Online and everything works fine. For testing purposes i stopped node one. CRM shows that the resources have migrated t... | The problem was the ARP-cache / refresh interval on an intermediate firewall. After reconfiguring the failover works as intended. | 2 | 2 | 839 | 2017-05-09T14:10:32.937 | database_errors | serverfault.com | |
140,990 | nginx automatic failover load balancing | I'm using nginx and NginxHttpUpstreamModule for loadbalancing. My config is very simple: [CODE] But with this config, when one of 2 backend server is down, nginx still routes request to it and it results in timeout half of the time :( Is there any solution to make nginx to automatically route the request to another ser... | I think that it's because nginx is not detecting that the upstream is down because it's on the same machine. The options that you're looking for are: proxy_next_upstream and proxy_connect_timeout . Try this: [CODE] | 34 | 40 | 67,246 | 2010-05-12T07:41:03.510 | database_errors | serverfault.com | |
754,503 | Server 2012, Server Manager Dashboard | New installation of Server 2012 R2 with Exchange 2016. The dashboard is showing 'Microsoft Exchange Notifications Broker' as stopped and giving a red error in the dashboard It is normal for the service to start and then stop if there is nothing for it to do!! https://technet.microsoft.com/en-us/library/jj150489(v=exchg... | Click the Services dropdown and uncheck the services that you don't want to see/be alerted on. | 4 | 4 | 1,658 | 2016-02-07T00:30:40.067 | bi_errors | serverfault.com | |
431,637 | Is it a bad idea to do validation in the constructor? | Consider the following approach to validation of an API class (POJO or what have you, I mean a class which just acts as a container for some properties), we make all constructors private to the API scope (and actually let us insist there only be one constructor), and the constructor does validation of its inputs, throw... | You should do validation in a constructor, to the extent that it is necessary to ensure that your constructor can stand up a viable object. This is especially true of any dependencies or data you hand to your constructor. If the constructor can't work out a way to produce a viable object from the arguments you present ... | 9 | 20 | 5,137 | 2021-09-03T19:42:46.077 | pipeline_ops | softwareengineering.stackexchange.com | |
607,656 | Seemingly Random Components on DL380 G5 No Longer Work After Applying Updates | I have a DL380 G5 running Windows Server 2008 R2 that just had two update bundles applied to it and as a result I have several crucial components that no longer work. The update bundles that were applied were -- HP ProLiant Server Firmware 2014.04.0 HP Windows Server 2008 R2 x64 Software 2014.04.0 I can't really come u... | Firmware is not the problem here. HP firmware rarely bricks a server; especially that model. Your issue here is the cocktail of drivers loaded on the system. I'd recommend using the HP Service Pack for ProLiant DVD (and the Smart Update Manager) to install system drivers, or just cherry-pick and download components dir... | 10 | 5 | 433 | 2014-06-24T20:52:11.637 | infrastructure | serverfault.com | |
997,115 | redis instance restore using dump.rdb is not working | I have redis instance with 10 keys in qa env. the instance is configured to use [CODE] in [CODE] directory . I ran "save" command and saw new [CODE] file that was created . then I created new instance on other host . copied the [CODE] to the new instance in "dir" directory as it is configured in [CODE] file. I stopped ... | found what the problem was . need to start the new server with a specific dump file as a parameter when starting the service though the "dir" parameter is set in the config file , it's written that when you start the service redis looks for rdb file which is configured, it didn't work for me. had to run redis-server /p... | 1 | 2 | 2,539 | 2019-12-30T13:34:05.457 | database_errors | serverfault.com | |
163,375 | How do I break down and plan a personal programming project? | I've just started a programming job where I'm applying my 'How to code' knowledge to what I'm being taught of 'How to Program' (They are different!). As part of this, I've been taught how to capture requirements from clients before starting a new project. But... How do I do this for a nebulous personal project? I say n... | There is nothing wrong with what you are doing if your purpose is to learn. Many developers leave a string of half-written applications behind them when they had finished everything interesting in them. However, if you want to write something and finish it, pick a problem you want solved then do the minimum you need to... | 7 | 7 | 6,224 | 2012-09-02T13:35:14.677 | api_errors | softwareengineering.stackexchange.com | |
598,409 | Location in nginx keeps returning 404 | I have a very simple nginx-setup with two location-blocks [CODE] The only thing it should do is to serve files from /usr/share/nginx/html for the first location, and files from /usr/share/nginx/more for the second location. The first location works as expected, but the second one keeps returning 404. This problem is so... | Try this and you will see the magic :) [CODE] | 2 | 1 | 11,123 | 2014-05-25T07:05:15.340 | infrastructure | serverfault.com | |
688,617 | Windows Server 2012 R2 - Why is MBSA 2.3 failing IIS Check? | Server is running Windows Server 2012 R2 as a Remote Desktop Server and has IIS 8.5 installed. I'm trying to run MSBA 2.3 (Microsoft Baseline Security Avisor) to check for any missing security patches and other dodgy setups and it fails the IIS checks with: Unable to scan IIS Status - The IIS Common Files are not insta... | In order for the MBSA (Microsoft Baseline Security Adviser) to do its scan job on Microsoft IIS, it needs to have IIS 6 Management Compatibility turned on, specifically, IIS 6 Metabase Compatibility . Lot of digging to find this one, it's a well hidden secret as the references to IIS Common Files in the warning Unable ... | 0 | 1 | 4,803 | 2015-05-05T02:40:23.357 | infrastructure | serverfault.com | |
276,760 | linux multipath routing load balance | I would like to know how to load balance two Business DLS links which have fixed IPs. I believe it would look something like this: [CODE] Is this be all I need in order to get multipath routing? Please, give me a more detailed answer if possible, thanks you. | As you already figured out, you just can work with a multipath route using equal weights. But the granularity of the balancing will be rather bad - all requests to the same destination IP address will go through the same link. You might want something more finely tunable here - which you can get by adding a couple of i... | 7 | 4 | 7,479 | 2011-06-03T15:45:05.047 | infrastructure | serverfault.com | |
1,042,509 | Web server CPU Utilization slowly increasing with LAMP stack? | I made a ton of changes to my website this year and noticed that my CPU Utilization has been gradually increasing for a couple of months (it slowly went from around 0% to 60% in about 2 months). After restarting my server a couple weeks ago, it went back down to 0% and now it's slowly climbing again. All of my other st... | There was a bug in [CODE] which now appears to have been fixed. Try [CODE] . | 3 | 3 | 379 | 2020-11-14T05:34:16.333 | infrastructure | serverfault.com | |
90,627 | How to change ibdata1 path in mysql? | My ibdata1 file is keep on increasing in size and for a temporary solution, we want to move the file to a separate location with more hard disk space. But, when I change the my.cnf file parameters data_dir and innodb_data_home_dir and restart the service, it is not starting and throwing errors like [CODE] Please help. ... | I've just done what you want! You'll have to move the entire [CODE] and not just a single file - not sure if that's possible. For example, in my [CODE] , you will find: [CODE] Files like ibdata1 and ib_logfile are very important! So, it's important to copy the whole datadir! Step 0 - backup everything - DBA's motto - "... | 0 | 1 | 5,402 | 2015-01-30T10:59:44.390 | database_errors | dba.stackexchange.com | |
18,067 | URL is not showing http:// after copy and paste | In the URL Bar missing http is a feature. But when I copy and paste a link and no http:// appears in the link then is it a bug? or something like any feature of the Google DOC. | If your requierements say "When copying an URL from address bar there must be [CODE] in the link" then it's a bug. If your requierements say "When copying an URL from address bar there must not be [CODE] in the link" then it's not a bug. If your requierements say nothing about [CODE] in the copied link, then why do you... | 1 | 2 | 237 | 2016-04-13T07:44:37.903 | data_quality | sqa.stackexchange.com | |
1,098,030 | Warning Message after Postmap Header_Checks with Postfix | I'm using postfix-pcre on my Ubuntu Server. If I test my header_checks configuration with the following command [CODE] I get the following warning message: postmap: warning: regexp map /etc/postfix/header_checks, line 36: Invalid preceding regular expression. Also it's not reject my test. On Line 36 I got this code: [C... | You should know that there is POSIX regular expression and PCRE regular expression. You are using a negative lookahead ( [CODE] ) with a regexp table. This type of regular expression is only supported by PCRE regex tables. To find out what types of lookup tables your Postfix system supports use the "postconf -m" comman... | 0 | 0 | 878 | 2022-04-07T11:00:21.050 | infrastructure | serverfault.com | |
365,020 | Validation layer of clustered WebApi solution | Currently I have a design problem, which I am not sure how exactly to solve and what would be the best approach. So what I have is a ASP.NET Core WebApi project which is actually clustered solution. It has several layers, of course representation (RESTful API), services, validation, repositories and data. Solution is u... | This is not a design problem; it is an implementation problem. You simply need to use a sql transaction. Within that transaction, check for the existence of the record, if it does exist, write it, if not don't. You will have to modify your repository methods to take a transaction token as a parameter. [CODE] | 2 | 1 | 96 | 2018-01-31T10:43:01.477 | data_quality | softwareengineering.stackexchange.com | |
1,051,992 | Is it safe to add additional values to a TXT record in DNS | In Dynamics 365 we need to be able to authenticate our domain for sending marketing emails. We have followed the advice in the Microsoft article below and now need to add the DNS records. https://docs.microsoft.com/en-gb/dynamics365/marketing/mkt-settings-authenticate-domains#:~:text=all%20new%20instances.-,Authenticat... | It's safe to have multiple values in a single TXT record. Route53 (AWS DNS service) for example will not allow multiple TXT records for a specific value in a zone. Other DNS providers will allow you to break them out, but if you dig for TXT records you'll get all of them back anyway so there really isn't a reason to br... | 3 | 0 | 3,339 | 2021-02-01T20:13:17.983 | infrastructure | serverfault.com | |
236,623 | Receiving error apr_socket_connect(): Invalid argument (22) when running apache bench (ab) on OSX | I received the following error on Apache bench: apr_socket_connect(): Invalid argument (22) when trying to connect to http://localhost:9202 . | On OSX, the fix is to use " http://127.0.0.1 " instead of localhost. Not sure why, but that prevents the error. | 29 | 54 | 10,349 | 2011-02-17T08:10:22.740 | infrastructure | serverfault.com | |
852,706 | frontier internet - cant connect to google cloud | Hey guys having a problem with google cloud over Frontier internet. Stumped a bit, because everywhere else I've tried I am able to at least telnet to the SSH port. Internet sites to check port open all pass, and from Amazon EC2, Azure, and Work environments, and from cellphone network I am able to telnet to the port. H... | As you're unable to get any traffic from Frontier's network to Google Compute's network, the issue lies with one of the two providers. Unfortunately there's very little you can do other than prod both until they help you out. It may be worth temporarily subscribing to a "real" support plan with Google to see if that wi... | 0 | 1 | 83 | 2017-05-28T20:40:17.900 | infrastructure | serverfault.com | |
999,675 | Server 2012 Connecting Multiple VPN Clients from Same Origin | We have an on-site windows 2012 server which has VPN access setup through the anywhere access. All works fine apart from if 2 people are trying to use the VPN that are in the same remote office as it only allows 1 person on at a time. If that user disconnects then the other can connect fine. I am assuming the VPN is lo... | Although I use it on a daily basis, I do not consider myself a Microsoft expert. But if you're implementing a L2TP/IPSec VPN server and your clients are accessing it behind a NAT, its a protocol limitation. Instead, use IKEv2, OpenVPN or, if you can, deploy a site-to-site VPN in that specific client. | 0 | 0 | 472 | 2020-01-20T16:37:41.847 | infrastructure | serverfault.com | |
1,137,676 | How to install varnish cache in Amazon Linux 2023? | I want to install varnish cache 6 in Amazon Linux 2023. [CODE] Above command returns no packages found message. Tried with direct rpm package installation but it failed to resolve so many dependencies. Even tried with packagecloud repo, but all methods failed to install as some dependencies always missing. Please advis... | The usual way to install package not from repo and get in consideration dependencies is to use command: [CODE] where the [CODE] can be URL or filesystem path | 0 | 0 | 597 | 2023-07-18T13:45:00.597 | infrastructure | serverfault.com | |
356,339 | Tips setting up nginx as proxy for php and node frameworks | We have a current, soon-to-be legacy PHP app installed in production, served with apache. Working fine. Currently trying to add in new Node.js alpha stack, which we're planning to install alongside live framework for awhile to test (on a staging server, not production -- for now). We're going to be using nginx as a fro... | nginx works pretty well out the box. The normal performance considerations of compression, Expires headers and serving static content directly still apply. The only real performance options for nginx are the [CODE] and [CODE] options. I haven't used PHP-FPM myself, so I don't know how much it differs from standard PHP ... | 1 | 1 | 337 | 2012-02-02T21:35:50.933 | infrastructure | serverfault.com | |
79,648 | How to configure UNIX or Linux for administration via serial connection | How can I configure my UNIX or/and Linux PC with COM port to support serial console connections? I would like to connect my notebook to that PC via a console cable and manage the PC with terminal emulation software like putty, as if I use keyboard directly. | I have this line in [CODE] on a server I run that has a serial console: [CODE] [CODE] is the serial port. That's all there is to it, at least here. Edit : You'll probably want something like this in your grub.conf: [CODE] And then with each kernel: [CODE] (The important part is the [CODE] arguments) | 6 | 6 | 509 | 2009-10-29T18:16:16.433 | infrastructure | serverfault.com | |
281,480 | Unpacking JSON into 14 columns without crosstab() and tablefunc? | In a Postgres 12 database, I have a simple schema containing a JSON column. The JSON will always contain an object, and inside the object there are always 14 keys like so: [CODE] I'm able to query this table just fine, for instance: [CODE] Produces the output that you'd expect: foo bar ziggy {"Baz (1998-03-12)":1.42857... | You can use a JSON path query: [CODE] Online example Note that it's recommended to use [CODE] over [CODE] (and in this case it would avoid the cast) | 1 | 2 | 4,770 | 2020-12-14T02:01:55.940 | warehouse_errors | dba.stackexchange.com | |
858,918 | DKIM check=pass but DomainKeys check=neutral | I got it to set up DKIM, I sent a test mail to check- auth@verifier.port25.com and reply was : [CODE] looks good, but why DomainKeys check just neutral ? in the mail-header I see the DKIM-signature, is that a big problem that its just neutral ? how to fix that ? | The check is neutral because DomainKeys is not DKIM. From the Wikipedia DomainKeys article: DomainKeys (informally DK) is a deprecated e-mail authentication system designed by Yahoo to verify the DNS domain of an e-mail sender and the message integrity. Aspects of DomainKeys, along with parts of Identified Internet Mai... | 1 | 1 | 337 | 2017-07-01T22:11:41.837 | infrastructure | serverfault.com | |
623,996 | How to enable traceroute in linux machine | I'm working on something in the transport layer and after i ran our custom policies for securing the policies i'm not able to do [CODE] from the linux machine. [CODE] The given below is the command I issued to enable traceroute: [CODE] [CODE] | Thanks for all the inputs. I came up with a shell script to do the job for me. I believe this would be helpful for other users also to perform the task. Please note that the local machine IP. Please do the necessary changes accordingly. [CODE] | 8 | 5 | 31,635 | 2014-08-26T06:05:40.027 | infrastructure | serverfault.com | |
395,872 | supervisord failed to start nagiosapi after reboot, need to run reload manually | I have supervisord to start nagiosapi everytime the server starts. The API created a status dump file called status.dat, which will get updated periodically. The following is the conf file that starts the api. [CODE] Everytime i restart the server, supervisord cannot start the api. stderr.log claims that it cannot find... | OK, I finally figured this out. Depending on how many servers you are monitoring, it might take some time for status.dat to be available upon restart. All I have to do is to wait until the file becomes available. I did so by adding startsecs option in my supervisor config file for the API. in my case, 60 seconds seem t... | 0 | 0 | 190 | 2012-06-05T20:24:00.950 | infrastructure | serverfault.com |
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