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5
votes
1answer
2k 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
1answer
427 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 ...
2
votes
1answer
9k 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
562 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
163 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
vote
1answer
2k 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
408 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
904 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
191 views

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 ...
0
votes
1answer
47 views

How to fix HP MSM760 Wi-Fi controller crash?

The HP MSM760 Wi-Fi Controller Team composed by four HP MSM760 is crashing and rebooting once a week at least. Each controller crashes at random if there is load on it (it only crashes at weekdays at ...
0
votes
1answer
119 views

CentOS Development Server Crashing Frequently

I am running a development server on a fairly old version of CentOS 5. This server has been live almost constantly for the past five years ago, so has been pretty stable. A while ago, it crashed ...
0
votes
1answer
529 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
489 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
176 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
158 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
417 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
53 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
131 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 ...
2
votes
0answers
30 views

Kernel Crash - kernel: BUG: unable to handle kernel paging request at 00000000ff8179b9

One of my Oracle Linux 6.5 Server running Oracle ASM/GRID experienced a kernel crash, it didn't respond i have performed a hard reboot. Server is Oracle Linux 6.5, kernel ...
2
votes
0answers
67 views

After Upgrading to Ubuntu 15.10 from 15.04, EC2 Webservers are Crashing

I have a variety of Ubuntu machines on EC2 running in production, with about 30 that were upgraded from 15.04 to 15.10. With most of the machines, the upgrade went flawlessly and experienced no issues ...
2
votes
0answers
81 views

Sudden failure of networking interface on CentOS 7

We're running a LAMP stack VPS on CentOS 7 hosting a few websites, MariaDB databases, and associated services. In the middle of the night our server mysteriously went completely offline. When we ...
2
votes
0answers
30 views

Perf crashing my RH

We are running perf on a 2.6.32-358.56.1.el6.x86_64 on an 8-core, dual socket machine. We have CPU iso on CPUs 1-31 (all except for 0), and our application is using CPUs 1-31. A few seconds into ...
2
votes
0answers
157 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
18 views

BSOD BugCheck on Multi-core system - What thread caused the crash?

I am aware that a Windows' system will crash with a stop error and "blue screen" for a few common reasons, some of which may be: A device driver or OS function that runs in kernel-mode space ...
1
vote
0answers
27 views

Apache hanging after updating website files

I have a Linux server running Apache and PHP. Sometimes (about once every dozen or so), after updating the PHP files and/or static files, Apache will hang some 5 to 10 minutes afterwards (depending ...
1
vote
0answers
86 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 ...
1
vote
0answers
2k 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 ...
1
vote
0answers
80 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
144 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
227 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
480 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
106 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
85 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
18 views

Terminal servers, VM clone keep getting kernel-power 2008r2 crashing both servers

I'm desperate at the moment to get an answer to the following problem. Als servers are managed in our VMWare-vcenter environment. We've got 2 terminal servers, term01 and term01 and we also got a ...
0
votes
0answers
12 views

yet another “Task blocked for more than 120 seconds”

RHEL5 linux host running on a VM was non-responsive. The data center operators took a screenshot of the console then rebooted the box. What they show was INFO: task txThread:IWFCDI:7496 blocked for ...
0
votes
0answers
15 views

How to stop cloud server crashes

I have had this ongoing problem with my server hosting this domain http://www.independentlondon.com, a dedicated cloud server i'm trying to manage myself. It just keeps crashing despite many changes ...
0
votes
0answers
97 views

php5-fpm crashes VM in nginx

I have been having ongoing 504 errors (503s). It has gotten to the point where it is so bad everytime someone trys an update in wordpress they get a 504. When troubleshooting I tried to adjust a ...
0
votes
0answers
164 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
0answers
81 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 ...
0
votes
0answers
40 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
14 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
170 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
41 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
273 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
68 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
0answers
60 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
770 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
49 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
23 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
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0answers
440 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 ...