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3answers
615 views

MySQL 5.1.49 freezing every two days

our mysql system is "freezing" every two days. By "freezing" i mean the following: it doesn't respond to ping we can't login with SSH we don't get any answer from MySQL there is no entry in the ...
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 ...
0
votes
2answers
64 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 ...
-2
votes
2answers
2k views

Crashing almost every minute

I have no idea why it's crashing. But here is some of my error log: [Thu Dec 29 03:23:45 2011] [error] [client 94.142.134.238] File does not exist: /var/www/phpMyAdmin [Thu Dec 29 03:24:38 2011] ...
2
votes
1answer
240 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 ...
1
vote
1answer
120 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 ...
1
vote
1answer
125 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 ...
1
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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 ...
1
vote
1answer
240 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 ...
1
vote
1answer
776 views

Avoiding memory full -> swap full -> crash

I'm experiencing an issue when sometimes the memory gets 100% full, and the swap file also, and the server becomes non-responsive and has to be restarted (causing also problems in database). This is ...
0
votes
1answer
428 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 ...
0
votes
1answer
112 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 ...
0
votes
1answer
107 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 ...
0
votes
1answer
88 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 ...
0
votes
1answer
223 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 ...
0
votes
1answer
308 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 ...
0
votes
1answer
42 views

Activating ssl on tomcat

I want to encrypt the http traffic on a tomcat instance via ssl. Therefore I followed the most simplistic approach described on various webpages. But anyway it simply does not work. Here is what I ...
0
votes
1answer
127 views

BackupExec 10d crashing 2k3 server

There are two weeks now since I'm doing repository-like backup, because BE10d is crashing the file server. The computer is a NEC Express 5800, 2xXeon, 1 GB RAM, 4 SCSI drives in RAID 5 w/ spare, one ...
0
votes
1answer
240 views

Coldfusion crashing when I initiate debugging session?

I've been trying to hook up eclipse to RDS for a CF8 testing server I have in my office. Every time I try to test the connection, the CF8 application server service crashes. When I check the event ...
-1
votes
1answer
78 views

Main server fails and I want my backup server to take over

In a situation in which my primary server fails.I don't want my application to go down but the application to start fetching information form a backup server which is my Pc(Located someplace else) ...
4
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 ...
2
votes
0answers
137 views

top reports extremely high cpu-used time for all processes

The server was up for less than 10 mins, but top shows extremely high cpu-used time for all process[1] (more than million hours used), this is a 24 core machine. System eventually crashed in 10-15 ...
1
vote
0answers
48 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 ...
1
vote
0answers
98 views

Linux server crashing (drm:drm_fb_helper_panic)

We have a server (IBM x3850 8864) running Ubuntu 10.04 LTS. It's acting as a KVM host with several virtual machines on it (also running Ubuntu 10.04). The (physical) server sometimes crashes with ...
1
vote
0answers
203 views

Apache server continuous downtimes

I have been running a website from a CentOS 5 server for about 1 year. Everything was okay until I noticed weird downtime problems on my server. I just took a look at the System graphs and I saw that ...
1
vote
0answers
381 views

Server 2012 DFS New Member Issue

I am trying to add a new member to our DFS topology. We have 3 DCs (VMs - VMware) running Windows server 2012, two servers are located in or Primary site and the third at our DR site. Currently the ...
1
vote
0answers
104 views

Ubuntu 10.04 Xen guest - why would time drift be proportionate with the system load?

We are trying to troubleshoot an issue with random system lockups during medium - heavy loads on an Ubuntu MySQL 5.1 server. There is nothing logging into the system during these lockups. The only ...
1
vote
0answers
84 views

My apache is very slow and crashing

I have my VPS server installed apache2. 10,000 people connected to the sites, and it is now very slow, while my CPU is 1.25% and I/O is 20B/sec. I have free memory of 644 Mb and using is only 347. My ...
0
votes
0answers
24 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 ...
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
0answers
102 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
25 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. ...
0
votes
0answers
14 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
0answers
73 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 ...
0
votes
0answers
18 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
511 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
0answers
39 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 ...
0
votes
0answers
167 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 ...
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
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0answers
49 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 ...
0
votes
0answers
634 views

Server crash : “unable to handle kernel paging request”

My fresh new Ubuntu webserver randomly crashes with the following error in the syslog. It doesn't respond anymore and I have to do a hard reboot. It happens almost one time a day. Server kernel is : ...
0
votes
0answers
44 views

Ubuntu 13.04 instance crash: how to debug?

We're running a server on Ubuntu 13.04 which crashes quite randomly (the instance itself crashes, not the apache2 component). I've enabled # Run bootlogd at startup -> BOOTLOGD_ENABLE=Yes , but ...
0
votes
0answers
20 views

Apache can crash due to unable to wtite coredumps?

apache coredumps are increasing by leaps and bounds, is this possible that while trying to write the core sumps and not able to do so because of no space left can crash apache server itself? I am ...
0
votes
0answers
310 views

server crashed, need help in analyzing why

My server crashed today, suddenly. those are the logs from /var/log/messages before it crashed. please help me undestand what is the reason Apr 10 21:40:37 stephan kernel: audit_log_start: 242 ...
0
votes
0answers
321 views

When Windows 2008 crashes, the complete memory dump is not written to disk

I have followed the instructions given here: http://support.microsoft.com/kb/969028 by the letter, but Windows doesn't seem to write a full memory dump. I use NotMyFault.exe to blue screen the system ...
0
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0answers
250 views

Postgres segfault on Ubuntu 12.04 64

i have a unbelivable problem: Ubuntu server 12.04 64 bit running on Wmware Infrastructure, postgres 9.2 and django connecting via psycopg. Randomly postgres crashes with segfault, si i restart it an ...