The tag has no usage guidance.

learn more… | top users | synonyms

2
votes
2answers
7k views

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 ...
1
vote
1answer
1k views

“show_signal_msg: N callbacks suppressed” then pegged at 100% and machine unresponsive

This happened on an Ubuntu 14.04 64-bit DigitalOcean Droplet: Apr 22 02:17:02 localhost CRON[32514]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Apr 22 03:16:59 localhost ...
0
votes
0answers
45 views

Systemd - run script/unit after system crash

Short version: Is there any simple way how to set up systemd so it runs a script or a unit when system boots after a crash ? And possibly have other units wait on its completion? I suppose I could ...
0
votes
1answer
22 views

kjournald and apache2 hang on xen vps

I have 2 low-traffic wordpress websites on a Debian 7 VPS (1G RAM, 1G SWAP, Dualcore 2.4GHz CPU). Between 5 and 10 days, kjournald hangs, the kernel reports and I/O error and the filesystem (ext3) ...
0
votes
0answers
36 views

system randomly powers off

I've got an HP MicroServer N54L running Linux Mint 17.2 (fresh install). Every few days, I find the machine in a powered-off state (standby, actually - not in the sense that it went to sleep, but in ...
1
vote
0answers
33 views

Simultaneous server crash in fail over cluster

I have 2 servers in a failover cluster. The cluster defines a shared 'ClusterStorage' drive. The drive maps to a SAN device through iScsi. Recently, the 2 servers rebooted on their own at the same ...
0
votes
0answers
31 views

Server crashes with incredibly high load

I got a problem with a KVM-virtualized server (Proxmox-based), running on Debian 7.8 and PLESK. Sometimes there are loads > 200 (sic!) and I just do not get the reason why. The monitoring shows the ...
1
vote
1answer
151 views

Random machine hangs with NFSv4 on CentOS/RHEL 6.5

We have an in-house "compute farm" with about 100 CentOS (free re-distribution of RHEL) 5.7 and 6.5 x86_64 servers. (We are in the process of upgrading all the 5.7 boxes to 6.5.) All these machines ...
0
votes
1answer
142 views

Server high memory and cpu - no leads

I've been asked to troubleshoot a server hosting our application at a client's facility. The client has complained to us on two separate occasions in the last week - week and a half. In one instance ...
1
vote
2answers
302 views

Tomcat 5.5: “Exception processing JAR at resource path” leads to java.lang.OutOfMemoryError

We have an old server running Tomcat 5.5. Yesterday we deployed a war file, and then it started to crash. Looking at catalina.date.log I found some java.util.zip.ZipException and then ...
0
votes
0answers
10 views

On a low-level, what is happening when a database server with no connection limit gets “overloaded”?

I'm making my first foray into scaling web architecture, and I was trying to find some more technical literature on what exactly happens that causes a database server to crash. Theoretically, it ...
0
votes
1answer
437 views

MariaDB crashing with “Assertion failure in thread xxx in file rem0rec.cc line 580”

I have three MariaDB servers set up in a Galera cluster. I use one server at a time as a "primary" master (i.e., Galera is just for failover, the app doesn't actively use multiple masters). About ...
5
votes
0answers
1k views

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 ...
0
votes
0answers
115 views

Cron Job Crashes the Server?

Can a CURL Cron Job fired every minute crash a server, or it's a problem with the code? I had a shared hosting that worked great, then I added a cron job with enters, using CURL, to a specific URL ...
0
votes
0answers
35 views

What caused apache to crash?

I have a high load server using php/apache/APC working fine for months. In the last 2 days it has crashed midday. if I restart apache it works so the problem is probably in the apache/php/apc stack. ...
1
vote
0answers
85 views

Nvidia proprietary driver crashes CentOS 6.6 [closed]

I'm having problems using the Nvidia proprietary driver for my GeForce 9100. Xorg starts up and works fine, I am able to use everything, although when I run glxgears the system becomes unresponsive. ...
-2
votes
1answer
58 views

Apache server crashes due to bandwidth spike issue [closed]

The problem I am facing is that my Website (hosted on a dedicated VPS) was working fine for last 6 months. However from last two days, it gets huge spikes of DATA coming in and this causes server to ...
0
votes
0answers
15 views

rsync copy > server unreacheable

I'm using rsync to copy around 500GB of data (Nexus repositories). The idea is to run it every hour to backup the "delta" and in case of issues we can easily switch the disks. Now, for two days in a ...
0
votes
2answers
80 views

CentOS - Nginx logs got deleted - unrecognized system restart, why? How to prevent?

I am using CentOS Linux release 7.0.1406 (Core). The last time I logged in to SSH of the server was on April 20. Everything was working fine. Today I logged in once again to check if anything new in ...
-1
votes
2answers
128 views

NAS RAID5 & Crash Scenarios

I need to validate my understanding on RAID. I'm planning to buy a Synology (or QNAP) NAS and plan to mount 4 HDD (4To each) in a RAID5 group. I’m considering several crash scenarios : one hard ...
0
votes
0answers
648 views

firewalld service is running, but firewall-cmd doesn't work

I am new to Centos 7/Server management. I am trying to figure out how to work with firewalld. my kernel release is: 2.6.32-042stab084.20(OpenVZ) And: #firewall-cmd --version #0.3.9 The problem is ...
0
votes
1answer
32 views

Server crashing - Error 106 and .dmp files

A server is crashing with increasing frequency. Prior to crashing there are no events in the eventlog which indicate why it is crashing. There is no bluescreen and it does not respond to pings, show ...
0
votes
1answer
116 views

PC with windows 7 block entire network during Update installation

I manage a domain with 80 PC that take the updates from the WSUS on server 2k8 R2, I have set the update to be installed once a week at 14:00 since in this time all the PC are on. Once a 2-3 month ...
4
votes
2answers
3k views

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 ...
0
votes
0answers
78 views

Apache 2.4 proxy_balancer mpm_worker lbmethod_byrequest crashes random

we are running apache 2.4 on ubuntu 14.04.02 as a load-balancing proxy using lbmethod_byrequest and mpm_worker since we updated apache from 2.4.7-ubuntu4.1 to 2.4.7-ubuntu4.4 we ran into wired ...
1
vote
1answer
153 views

Nginx + Apache server crash every 6 days [closed]

I'm a web developer and I am having a very nasty problem with one of the websites I'm working on and I was hoping somebody here may be able to help me. The website is running on a dedicated server ...
1
vote
1answer
260 views

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 ...
1
vote
0answers
60 views

Server crashes because of SMP

My web server is crashing every few days unless I disable SMP with "nosmp" parameter in Grub config. It is not an hardware failure because the problem persists after moving everything to a new ...
0
votes
0answers
42 views

Analyse kernel crash file on Ubuntu server 11.10

I am experiencing random crashes on a Ubuntu 11.10 server, and for the time being the system can not be upgraded, even tho this distro is very old. uname -r 3.0.0-12-server I've set it up to get a ...
2
votes
3answers
333 views

memtest86+ crashing on server

We have a few DELL 1950 servers. One of those servers has CentOS6.3 and it's randomly rebooting, so I suspected it was hardware (no log generated). The other four servers do not randomly reboot. We ...
2
votes
1answer
269 views

Ubuntu 12.04.2 LTS Server - Randomly hangs with no logging

My server randomly hangs and becomes unresponsive without any logging (dmesg, syslog, kern.log, boot.log, and messages). I cannot predict when it is going to happen. Sometimes the server runs fine for ...
0
votes
0answers
189 views

MySQL suddenly 'crashed' but not stopped, mysqld_safe 100% cpu on CentOS 6

Suddenly, today i see the website down. Checking the cpu with "top" in command, i found the mysqld_Safe at the top using all of the cpu. After some google i found some different solutions, i made a ...
2
votes
3answers
3k views

How can I fix Purple Screen of Death for ESX 5.5?

I have a ESX 5.5 installed on my HP Proliant DL 180 G6 with a configuration of 8X Intel(R) Xeon(R) CPU E5540 @ 2.53GHz, 24 Gb RAM. Recently the server has crashed four times, showing the Purple ...
0
votes
1answer
97 views

httpd trying to access root-owned session files

While looking into what's been causing a server to lock up/crash, I found many selinux messages in /var/log/messages. For example: setroubleshoot: SELinux is preventing /usr/sbin/httpd from getattr ...
2
votes
1answer
7k views

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 ...
0
votes
1answer
62 views

Analyze SMART self-test for broken disks [closed]

I recently came home from vacation only to wake up the following morgon with two disks in my RAID5 array marked as faulty. I was able to start the RAID by forcing it to use the faulty disks and run, ...
2
votes
1answer
492 views

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 ...
0
votes
0answers
55 views

Ubuntu Server, services crashing yet server stays up with call trace

I have a strange issue with our Ubuntu 12.04LTS server. it has happened twice now and with a gap of around a week. The server services (apache, ssh, smnp, webmin, just the ones i tested) all stop ...
0
votes
1answer
75 views

Put NIC under heavy load [closed]

I think I've got a faulty NIC so I want to put it under heavy but controlled load to see if and when it dies. How can I generate such a load? The NIC is in a Hyper-V host with Windows and Linux ...
1
vote
2answers
403 views

5 ESXi same hardware . 2 of them crash

I even could not find where to start research ! There is no pattern between crashes . 2014-08-27T13:48:01.033Z cpu0:32957)MCE: 1118: cpu0: MCA error detected via CMCI (Gbl status=0x0): Restart IP: ...
0
votes
1answer
317 views

Ubuntu 12.04 Randomly Reboots

Im sorry if this starts really vague, but i have no idea where to turn. We have 4 dell R610 servers with 2 x 2.8GHZ Intel 5650 and 16GB Ram. These servers just randomly reboot themselves here is ...
1
vote
1answer
272 views

How to analyze a windows system hang (not crash)

I've got a customer with intermittent System hangs. The System in case is a Windows Terminal Server 2008R2 SP1. Sometimes one session in the Server will freeze. Everyone else can work as usual, but ...
4
votes
2answers
3k views

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 ...
1
vote
1answer
129 views

CentOS 6.5 Server Lockup

Today one of our CentOS 6.5 KVM nodes from OVH crashed after 46 days of uptime and we were unable to find the reason why, we had this issue before with the OVH kernel on another server but this one is ...
5
votes
1answer
834 views

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 ...
1
vote
2answers
871 views

Diagnose a server crash, possibly CPU temp

I have a desktop running as a ubuntu server at another office. Lately its been shutting itself down once in a while, and I'm a bit unsure how to diagnose this. The syslog looks like this: May 20 ...
0
votes
1answer
3k views

Server freeze with “rcu_sched detected stalls on CPUs/tasks”

My web server is crashing several times a week. I see errors in syslog but I can't find a solution. I tried changing kernel to older or newer versions but no difference. I moved everything to a new ...
7
votes
3answers
28k views

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 ...
0
votes
5answers
2k views

Server hang on CentOS 5.5

I'm running CentOS 5.5 on a server. It runs several VMware virtual machines and an NFS server. Occasionally, like today, it hangs. There's nothing in /var/log/messages that indicates any problem. ...
0
votes
0answers
50 views

Server usage topped 100% and crashed - how to diagnose and prevent

I'm running a small webserver on Ubuntu 12.04. Last night, the server topped off at 100% cpu usage and crashed. This is unusual as I'm normally around 1-5%. I suspect a DDoS attack from someone ...