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39 views

What caused the reboot of this linux VM?

So here is the code of a normal reboot of my vm: Feb 5 00:17:46 desktopallianceada systemd[1]: Stopping Disk Manager... Feb 5 00:17:46 desktopallianceada systemd[1]: Stopping Session c10 of user ...
0
votes
1answer
38 views

Apache crashing with short bursts of traffic

Our Apache server crashes whenever we have short bursts of traffic (200+ users at a given time). We have to manually restart it to get it back online. I'm hoping to find out some common issues that ...
3
votes
2answers
68 views

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 ...
2
votes
0answers
33 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
53 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 ...
0
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0answers
12 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 ...
1
vote
1answer
58 views

HP ProLiant ML350p Gen8 server keeps crashing (full speed fans)

I have a problem with a HP ProLiant ML350p Gen8 server. Most of the time it runs fine, but after several weeks of uptime, the server crashes out of the blue. This happened about 5 times now. When it ...
0
votes
2answers
81 views

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 ...
0
votes
1answer
85 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 ...
-1
votes
1answer
55 views

I launch stress-ng -d 9 and my server crashes

I'm trying to understand why my server crashes. It reboots itself after some minutes when launching stress-ng -d 9 The last logs I received are these ones: [pid 1547] write(3, ...
2
votes
0answers
26 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 ...
0
votes
1answer
23 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
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0answers
76 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
1answer
80 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 ...
5
votes
2answers
87 views

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 ...
14
votes
2answers
1k views

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 ...
0
votes
1answer
35 views

MySQL Story + Crash

My MySQL crashed yesterday, and in a panic I ended up (stupidly) deleting the ibdata1 and innodb logfiles. I then used the testdisk feature and recovered the old ibdata1, but was unable to recover ...
1
vote
1answer
90 views

Windows Server 2008R2 crash every hour

I have a Windows Server 2008R2 which crash every 1 hour. The server is physical and is provided by fasthosts but I can access the server(out of the country). So I checked for Event Viewer before crash ...
0
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0answers
121 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
66 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
56 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
34 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
13 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
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0answers
203 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
101 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
162 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
88 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
28 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
283 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
270 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
1answer
494 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
363 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
1answer
403 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
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
0answers
126 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
1answer
32 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) ...
1
vote
1answer
249 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 ...
0
votes
0answers
1k 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
79 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
48 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
243 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
1answer
377 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
1answer
159 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 ...
2
votes
5answers
5k 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
135 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 ...
1
vote
1answer
451 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
67 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
778 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
63 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
81 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 ...