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Questions tagged [server-crashes]

249 questions
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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 at all. However, 10 of my webservers have…
Will
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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 discovered the issue we power cycled the VPS and the…
MarathonStudios
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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 running perf with --pid set the entire blade crashes…
c-is-best
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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 I can't get any functionality out of firewall-cmd.…
jrook
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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 months and suddenly it starts to happen again.…
msbrogli
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5 answers

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 Screen of Death. Once this happens all of the virtual…
Mehdi
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2 answers

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 machine, but problem is still there. This has to be…
Antares
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1 answer

"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 kernel: [211877.884132] show_signal_msg: 12 callbacks…
Catalin P
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Understanding IIS Server Crash

We have an issue where the whole iis server is crashing. From my understanding when an application crashes (due to infinite loop or else) only that application pool is taken down. In our sceanrio all Application Pools (we have more than 1) are…
atp03
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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 mins. It came back to normal after power recycle.…
user390687
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1 answer

Server hangs at "Shutting down loopback interface" on reboot

I'm having some trouble understanding what's going on with connecting one of our Xen hypervisors to our iSCSI SAN. Ever since we mounted our iSCSI targets, we've experienced hanging on reboots. This is what it looks like... Stopping iscsi: …
James
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1 answer

Kernel oops on Linux running in VirtualBox breaks some IO-related functionality on the server

We are having problems with CentOS release 6.3 running in VirtualBox on Windows 7 machines. The symptoms are the following: Everything works as normal for several hours, even days. Then something happens which breaks the system. What we still can do…
K Erlandsson
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Analyzing crash dump file from Windows 2003 R2 SP2

My Windows 2003 R2 SP2 server crashes about once a month. I analyzed the crash dump but can't really figure out what it means. Any help is appreciated.... Microsoft (R) Windows Debugger Version 6.2.9200.20512 AMD64 Copyright (c) Microsoft…
blizz
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3 answers

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 ran memtest86+ on the five servers and on three of…
user148723
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ESXI Crash need help to understand log and support about nexentastor on virtual machine

If i understand right, the following core dump means that the cpu4 has crashed the Host if i read the next line it seem that at the time the CPU 4 was assigned to the NexentaStore Vm ... SO if im right i can say that NexentaStor Vm crash my esxi Am…
Bgnt44
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