Questions tagged [server-crashes]
The server-crashes tag has no usage guidance.
250
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362
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Anyone else experiencing high rates of Linux server crashes during a leap second day?
*NOTE: if your server still has issues due to confused kernels, and you can't reboot - the simplest solution proposed with gnu date installed on your system is: date -s now. This will reset the ...
28
votes
2
answers
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Server crash with ascii NUL characters in syslog ( ^@^@^@... )
I have some dedicated server hosted by a OVH (French service provider).
OS : Ubuntu 12.04 x64
A few months ago, one of my server crashed.
The only weird thing was some "ASCII NUL" caracters in the ...
22
votes
3
answers
117k
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How to determine cause of system crash?
My server crashes about once a week and does not leave any kind of clue as to what's causing it. I have checked /var/log/messages and it just stops recording at some point and starts at the computer ...
15
votes
2
answers
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CRITICAL STRUCTURE CORRUPTION on Windows Server 2012 R2
I have a Windows Server 2012 R2 virtual machine; yes with all the updates. Additional software include Microsoft SQL Server 2014 (was 2012 on a previous VM). The web hosting company includes xenpci....
13
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4
answers
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How to use kdump/crash to investigate an OOM issue?
The problem
A server crashed after multiple "Out of memory" messages and I am trying to pinpoint the culprit. If it is in userland - which process. If it is in the kernel - which kernel module.
...
12
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2
answers
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Why is Linux kdump not writing to /var/crash?
It's happened again! I have 4 servers which are crashing periodically, and there is no information printed to the system logs or the serial console.
In addition, the Linux kdump service isn't writing ...
11
votes
4
answers
9k
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How can you distinguish between a crash and a reboot on RHEL7?
Is there a way to determine whether a RHEL7 server was rebooted via systemctl (or reboot / shutdown aliases), or whether the server crashed? Pre-systemd this was fairly easy to determine with last -x ...
9
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2
answers
4k
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What can cause ALL services on a server to go down, yet still responding to ping? and how to figure out
It has happened to me already twice within very few days that my server goes down completely, meaning http, ssh, ftp, dns, smtp, basically ALL services stop responding, as if the server had been ...
8
votes
3
answers
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What is wrong in my php-fpm configuration?
I have a 64-bit server but only 256MB of RAM. So, I moved to nginx server with fast-cgi to connect to PHP. I have PHP 5.3.6 running.
The issue is that after every two or three days when I try to ...
8
votes
1
answer
714
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Dell PowerEdge server crashed, how to repair? What happened? Information inside
I am currently in high school and run our school's website. This summer, our SysAdmin was diagnosed with cancer, and he went off for treatment, so I have been thrown into an interesting situation.
I'...
8
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2
answers
7k
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memory&swap are full, can't ssh; any option other than physical restart?
by mistake, i executed some applications that used all memory (and i think swap) on my ubuntu server and its now crashed, SSH doesn't work and freezes. Do you know any other options other than ...
6
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2
answers
8k
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MCE Error Codes/Pink Screen - Should they be a cause for concern?
So I recently purchased a server grade system along with all server grade peripherals. I'm licensed for ESXi 6 and have all recent patches installed. System has been running around 2 weeks now and ...
6
votes
2
answers
924
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At my wits end. What could cause my server to randomly hard reset? (Seems to be related to ZFS)
I have a server that I built years ago that has worked like a champ. But within the past few months it has started to become seriously unstable with no discernible pattern. I have been debugging it ...
6
votes
2
answers
2k
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Server freezes without kernel panic
We are running a KVM node which is crashing irregularly showing a very strange behaviour. The interesting thing is that we already had this problem with another node which crashed every 1-2 weeks. As ...
6
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0
answers
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Server went offline for no reason except SIGINT?
We had a system go offline this morning. The only thing in syslog is:
Mar 20 15:27:15 fooserver systemd[1]: Received SIGINT.
Mar 20 15:27:15 fooserver systemd[1]: Starting Synchronise Hardware Clock ...
6
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3
answers
2k
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How do you force Windows to keep memory dumps?
I'm trying to debug a sporadic problem with some Dell tablets out in the field that crash intermittently. Looking at the Event Viewer logs, it seems that Windows automatically creates a memory dump ...
5
votes
3
answers
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Is a hardware watchdog already active at my CentOS server?
I rent a dedicated server (with Intel Haswell CPU and custom hardware) at a lowcost hosting service and use it with CentOS 6.4 / 64 bit Linux (with stock kernel: 2.6.32-358.14.1.el6.x86_64).
Every ...
5
votes
1
answer
29k
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PAM unable to dlopen(/lib64/security/pam_fprintd.so) causing CentOS/Redhat server to crash
CentOS 6, Parallels PLESK 10.4, Apache
One of my servers went down over the weekend much to my dismay. On the day and time it occurred, my log errors/messages end with this -
/var/log/secure:
Jul ...
5
votes
5
answers
9k
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Why does my debian server freeze?
I installed Debian 9 ("Stretch") in a virtual machine hosted on ESXi 6.5
The OS is up-to-date and nothing else has been installed but VMware tools.
Sometimes when I execute a command, the server will ...
5
votes
1
answer
2k
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ESXi v5.5 is having random crashes
HW:
Type: HP Proliant ML350 G5
RAM 22GB
CPU 1 x Intel Xenon E5405 2.00GHz
OP:
ESXi 5.5 just updated from 5.1 to try and fix the crashes occurring on ESXi 5.1 on same hardware.
I'm trying to find ...
5
votes
1
answer
3k
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Server 2012 R2 unexpected crash DRIVER_IRQL_NOT_LESS_OR_EQUAL
I've a Windows Server 2012 R2 server which acts as Hyper-V host for multiplice Windows/Linux VMs. Since yesterday the server is offline from one second to another, and will reboot automatically. I ...
5
votes
1
answer
3k
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Analyzing BSOD dump file from Windows 2008 R2 SP1
I have a problem with a virtual Windows Server 2008 R2 SP1 server running withing VMWare. The server is running Citrix and also has Symantec Endpoint protection installed. It randomly crashes and goes ...
4
votes
3
answers
5k
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Can disk space be the reason for a server crash?
After looking into the MySQL error file, I found an error regarding disk space. Now I think its the reason for MySQL crashing:
[root@xxxx ~]# cat /var/lib/mysql/xxxx.com.err
120528 17:45:05 [Note] ...
4
votes
2
answers
4k
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How to disable core dumps on Debian 8
I pretend I've already tried everything out there, but my Debian 8 keeps creating core dumps when something crashes. It's happening about once or twice in a month. It's a production server for a few ...
4
votes
2
answers
664
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MySql Data Loss - post mortem analysis - RackSpace Cloud Server
After a recent 'emergency migration' of a RS cloud server, the mysql databases on our server snapshot image proved to be days out of date from the backup date. And yet files that were uploaded ...
4
votes
3
answers
9k
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APC XS 1300 Overloading every night at 2:45AM
Here is the situation that I have run into for the past 2 nights:
I leave work and all is well, severs happily humming away everyone has access, life is good. I get in the morning, and the only ...
4
votes
1
answer
515
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Nonexistent service gets a start control?
I've got a pair of servers that both log an event "The cpuz135 service was successfully sent a start control." but cpu-z isn't installed on either machine. I can't find the service listed in Windows' ...
4
votes
2
answers
246
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Figuing out the "who, what, when and why" of a server crash
Currently, I'm the Moodle Admin for my University, and one of my responsibilities is to keep the server running and working all the time. Sometimes, for no apparent reason, Apache or / and MySQL ...
4
votes
1
answer
427
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Crash dump analysis
I hope this isn't a stupid question, and if it is, then I want to at least get it over with so I don't feel so dumb in the future.
Here we are, loading up a Windows crash dump with Windbg. Here are ...
4
votes
1
answer
4k
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InnoDB: Fatal error: cannot allocate memory for the buffer pool
MySQL Seems to be crashing quite often, I'd say every hour or so.
The only thing running on this server that is using MySQL is a Drupal installation that I'm working on, there's only one person that'...
4
votes
1
answer
2k
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Hyper-v on 2012R2 startup gen1 vm causes the host to freeze up
I've searched a lot to resolve the following issue, but nothing helped me.
My problem is, that starting up a first-gen vm locks up the whole host. Only a hard reset helps. Second-gen vm starts and ...
4
votes
1
answer
2k
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Anybody experiencing full system lockups with LUKS?
I've recently setup a couple of new servers. This time I'm encrypting most of my partitions using dmcrypt+LUKS. However these new servers crash very often, every few days. Full lockups, kernel does ...
4
votes
1
answer
8k
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Apache httpd processes and PHP out of memory
I have a VPS running apache-php-mysql on centos and a single drupal website installed.
The VPS has 256MB of RAM (could be the root cause of all my problems... maybe I just need more).
Whenever I try ...
4
votes
2
answers
3k
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certbot renew crashes nginx and all websites go offline
When sudo certbot renew command is run, nginx server is crashing. The error log in systemd looks like this:
- The job identifier is 48862.
Sep 01 11:31:52 phoenix.medialab.ntua.gr systemd[1]: nginx....
4
votes
2
answers
4k
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How to stop a random ramp in FCGI Processes Killing the server
So got the below earlier to day...
Around that time the logs show a ramp in processes(600) and associated memory (1.2g), cpu usage load average (80) untill the server gave out.
Server had to be hard ...
3
votes
8
answers
42k
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How to track down the cause of Windows Server 2008 crashing?
I have Windows Server 2008 running under VMware.
Recently, its started to crash roughly every day, with continuous 100% CPU utilization, and no response in the GUI.
Is there a step-by-step ...
3
votes
3
answers
15k
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Apache2 Fails to start after recent update to 2.4.34, no clue why
At 7:57:18PM last night, July 17th Apache2 shut down and quit working. I didn't notice until earlier today (the 18th.)
Updates Occurred: /var/log/apt/history.log shows that there were 3 updates ...
3
votes
2
answers
864
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Debian Linux server locked - no clues in the logs?
I had a server lock up this morning. Here is a screen shot from the console:
None of the messages from the screen shot mean anything to me. I have a feeling that the important stuff probably ...
3
votes
2
answers
20k
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Cannot start kdump
My system always crashes down. So I decided to enable kdump to see the problem since I was not able to see possible errors on the log files.
I followed the steps to set up kdump from a site here. My ...
3
votes
5
answers
778
views
Ubuntu 10.04 server crash
I'm running an Ubuntu 10.04 (x64) as a web/mysql server.
The server became unresponsive to SSH, Ping, HTTP etc. and the technician with physical access to the machine sent me this screengrab here:
...
3
votes
2
answers
5k
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Windows 2012 R2 server, crash, no dump file
I have a Windows 2012 R2 dedicated server. 64 GB RAM. Sitting in a remote datacenter.
It crashes about 1-2 times a day. I have a KVM over the internet that I can view the screen. Screen says ...
3
votes
1
answer
5k
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Windbg / minidump - how do I get a process list with memory use
I've used Windbg only for the most simple !analyze -v in the past. Now I've got a bit of a problem...
Some process is running wild and consumes all available memory (I can see it spike in monitoring ...
3
votes
3
answers
6k
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How to find out, why a server hangs, but is still reachable with ping
One of my servers, which runs in a german data center "hangs" every night, but i cant find out why. No errors are found in the /var/log/messages and /var/log/syslog.
The server responds to ping, but ...
3
votes
1
answer
356
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Why might login failures cause SQL 2005 to dump and ditch?
Our SQL 2005 server began timing out and finally stopped responding on Oct 26th. The application logs showed a ton of 17883 events leading up to a reboot. After the reboot everything was fine but we ...
3
votes
3
answers
4k
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Troubleshooting the dreaded 0x9C BSOD
We have a Dell PowerEdge 2950 running Windows Server 2003 R2, Enterprise x64 with Service Pack 2 installed.
Recently, we've been experiencing multiple STOP errors occurring with that server. ...
3
votes
1
answer
2k
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Troubleshoot random server freezes without log entries
We are experiencing a very particular and unique problem on our C# application which is running under .NET framework 4.7.2,
in kiosk mode on Windows 10 Operating System that runs on a Lenovo ...
3
votes
1
answer
17k
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Server crashed, some MySQL databases are broken. Trying to recover with InnoDB recovery, but ibdata1 seems corrupt
I've a problem. Some days ago my root server crashes after a power outage.
I realised that the MySQL server won't start. In the logs I find out that an error occured with InnoDB's ibdata1.
I've ...
3
votes
0
answers
2k
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Windows 10 KVM guests cause Ubuntu 20.04 host to crash (revised)
I got extremely confused and decided to re-write the question from scratch, so if some of the comments do not make sense, that is why. Apoplogies to anyone whose time I wasted.
I am having a problem ...
3
votes
0
answers
2k
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Memcached fails/crashes every few hours
I have a CentOS 7 server with Memcached. There are a lot of requests, and usually after a few hours, the memcached daemon crashes. I always restart the service, but it crashes again a few hours later.
...
3
votes
0
answers
1k
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How to determine the cause of random reboots on fedora linux server
I have a f23 linux box running as a dev server, and several times over the last few weeks I've come to log into it and found that it had been reset. One time it rebooted right in front of me, and ...