Questions tagged [server-crashes]

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22 votes
3 answers
117k views

How to determine cause of system crash?

My server crashes about once a week and does not leave any kind of clue as to what's causing it. I have checked /var/log/messages and it just stops recording at some point and starts at the computer ...
0 votes
0 answers
21 views

How many queries will fail if an error occurs within a single process of a single host?

Context: I have a cluster of H hosts serving an API, where each hosts serves the api using P (constant) number of (python, but irrelevant) processes (asynchronously, but otherwise also irrelevant). I ...
0 votes
0 answers
65 views

Digital Ocean Droplet Crash after Resize. I am unable to figure out the issue

I am currently running an Apache2 web server with FastCGI Process Manager (PHP-FPM) on Ubuntu 22.04 at Digital Ocean. Recently, I wanted to add an additional website to the server. To do this, I ...
1 vote
0 answers
647 views

Windows Server 2016 running off iSCSI BSOD after power loss

I've got a setup where I'm hosting the Windows Server 2016 images on a Solaris 11 ZFS SAN over iSCSI. These images began as baremetal installs then I used Clonezilla to clone them to the dedicated ...
3 votes
3 answers
15k views

Apache2 Fails to start after recent update to 2.4.34, no clue why

At 7:57:18PM last night, July 17th Apache2 shut down and quit working. I didn't notice until earlier today (the 18th.) Updates Occurred: /var/log/apt/history.log shows that there were 3 updates ...
1 vote
1 answer
700 views

Windows Server 2022 Standard is giving me crashes in the HTTP module that reboot my server. I need help tracking down the exact issue. How?

I don't know if this is a problem with the memory on the server, one of my SSD's, or something software related. the crash has happened 4+ times in the last few months. I need some help in figuring ...
0 votes
0 answers
110 views

My Ubuntu server crashes and I don't know what causes the crash

My server gives the error below. Let me know if more details needed. Modules linked in: xt_nat veth nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink xfrm_user xfrm_algo br_netfilter bridge stp ...
0 votes
1 answer
383 views

Ubuntu reboots randomly

I'm running some servers on Hetzner (AX101) and have been experiencing random reboots for a while now, all my investigations lead absolutely nowhere. Prerequisite: Ubuntu 22.04 (Ubuntu 5.15.0-58.64-...
2 votes
1 answer
2k views

Apache2 server is down - AH00170

I have been having problems for several weeks on my Apache2 server with Ubuntu 22.04.1 + PHP 7.4 For no apparent reason, the server goes down on its own and the web is still under construction so it ...
0 votes
3 answers
113 views

Server crashing every 14 days, no bugcheck

Every 14 days one of our Windows servers crashes. We have been trying to figure out what causes this but to no avail. Today we noticed a pattern in the shutdowns of the server, happening every 14 days ...
-1 votes
2 answers
208 views

How can I stop my MySQL server from going down?

I have a website based on a MySQL server on an Ubuntu machine. Every several weeks, one of my users complains that the site does not work, and I find out (using service mysql status) that it is ...
0 votes
1 answer
384 views

"Timed out waiting for device" & dev-disk-by\x2duuid.swap/service failed with result dependency/timeout?

My server (running Centos Stream release 8) stopped responding to http yesterday evening. I tried to SSH in to it this morning, with no luck, just an empty hung PuTTy screen. I did a automatic reset ...
0 votes
0 answers
151 views

Unable to boot Ubuntu machine after power outage

So I'm generally a web developer but a place I do some help for is asking me why this is happening after a power failure at their location... I'm looking to get some feedback on how to do this so that ...
0 votes
1 answer
2k views

PHP8.1 FPM Crashes everyday after 12AM

From the last two to three days I noticed that my PHP8.1-FPM process crashes after around 12:00 AM-12:30 AM at night. My server has highest traffic in morning and lowest in night. But FPM process runs ...
4 votes
2 answers
3k views

certbot renew crashes nginx and all websites go offline

When sudo certbot renew command is run, nginx server is crashing. The error log in systemd looks like this: - The job identifier is 48862. Sep 01 11:31:52 phoenix.medialab.ntua.gr systemd[1]: nginx....
1 vote
1 answer
2k 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 ...
-2 votes
4 answers
400 views

All the reasons a Linux server might freeze

Every now and then, one of our remote Linux servers crashes: they're unavailable on the network (sometimes responding to a ping, but not to ssh/http) and they won't respond to mouse or keyboard input. ...
1 vote
0 answers
666 views

Mysql crashing and resetting frequently? (XA crash recovery)

I have a Wordpress site that loads very slowly and crash sometimes (it gives a database connection error for a few seconds and then it works again), even having very few visitors (it's basically just ...
1 vote
1 answer
2k 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
0 answers
388 views

Server experiencing Kernel-Power Event 41, but only once every two weeks

I go to check on a client's servers once every two weeks as part of an IT contract. For the past month and a half, their secondary server will experience a sudden shutdown and generate the Critical ...
0 votes
2 answers
576 views

Server random freeze and boot only with cold boot

im facing extremely weird issue regards one server, it random freeze/hang with no output on server, and not responding to short keys, and required cold boot, when boot with cold boot, no errors on ...
0 votes
1 answer
244 views

Apache Hangs for 20 mins ever few days

I am having a heck of a time figuring this out. Apache, every few days hangs for about 20 or so minutes and then "comes back to life". This has happened during the middle of the day, it's ...
0 votes
0 answers
139 views

Why does my Ubuntu 16.04.6 LTS randomy reboot?

I have a supermicro 1U running Ubuntu 16.04.6 LTS. The problem I am having is it reboots at what appears to be random intervals; it can go 2 days between reboots or it can go 2 weeks between reboots. ...
1 vote
1 answer
488 views

GPU server freezes during GPU idling

We have a new Supermicro Server AS-4124GS-TNR equipped with eight NVIDIA RTX A6000. The OS is Ubuntu 20.04.2, the NVIDIA driver version is 460.73.01 (no Nouveau driver used), the CUDA Version is 11.2. ...
1 vote
1 answer
816 views

Interpreting SMART Logs of Newly Installed NVMe RAID0 Crashing Everyday

An Ubuntu 20.04 system has been stable for a year until a 2nd and 3rd NVMe drive is installed on the motherboard to form a 2x1TB RAID0 array. Ever since then, there is huge amount of IO load on this ...
2 votes
2 answers
2k views

MariaDB memory spikes and crash

We are running a MariaDB 10.5.8 server on GKE with 16Gb of RAM. The server have multiple times a day unexpected memory usage spikes that crash the server 1day memory usage graph (orange line is k8s ...
1 vote
3 answers
5k views

Mysql server crashes without leaving any log behind

I've a mysql server (v5.6) running on ubuntu server 10 x64. It's always up and running with a medium traffic, but every while it crashes & restarts without lefting any log message behind, after ...
12 votes
2 answers
20k 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 ...
1 vote
0 answers
974 views

Ubuntu Server 20.04 freeze/unresponsive, kernel BUG: Bad page state in process

Server Information: Distributor ID: Ubuntu Description: Ubuntu 20.04.1 LTS Release: 20.04 Codename: focal today I noticed my new Server crashed/froze. It did not accept any ssh ...
2 votes
2 answers
17k 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 ...
1 vote
0 answers
640 views

How to determine what is crashing our systems (CentOS 7) from kdump?

we currently have 3 out of 3 systems running CentOS in the exact same hardware and software configuration but are experiencing random system hangs. The occurrence can happen randomly as short as 20 ...
5 votes
1 answer
3k 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 ...
3 votes
0 answers
2k views

Windows 10 KVM guests cause Ubuntu 20.04 host to crash (revised)

I got extremely confused and decided to re-write the question from scratch, so if some of the comments do not make sense, that is why. Apoplogies to anyone whose time I wasted. I am having a problem ...
4 votes
2 answers
4k 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 ...
4 votes
1 answer
2k views

Anybody experiencing full system lockups with LUKS?

I've recently setup a couple of new servers. This time I'm encrypting most of my partitions using dmcrypt+LUKS. However these new servers crash very often, every few days. Full lockups, kernel does ...
0 votes
1 answer
187 views

several times Mariadb failure

I have vps with mariadb installed on centos 7 the problem is mariadb keeps crashing I've tried so many solutions but no good answer fixes my issue here is my tail -60 mariadb.log Server version:...
2 votes
2 answers
5k views

Opening a linux-crashdump dump with crash?

So I've been trying to debug a weird intermittent kernel crash for a server running Ubuntu-Server 16.04, which has had me stumped for ages, and so I installed and setup linux-crashdump following the ...
3 votes
0 answers
2k views

Memcached fails/crashes every few hours

I have a CentOS 7 server with Memcached. There are a lot of requests, and usually after a few hours, the memcached daemon crashes. I always restart the service, but it crashes again a few hours later. ...
6 votes
2 answers
8k 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 ...
1 vote
1 answer
43 views

/var got misteriously renamed in /var.1 on CentOS6 server

On one of ours CentOS6 servers /var got renamed to /var.1 tonight (around 3.24 am) and a new empty /var folder was created. Not surprisingly, it crashed soon after that. Circumstances: Over the ...
2 votes
1 answer
13k 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
1 answer
558 views

Crash utility exit with error in Rhel6.6

Crash utility fails with below error. crash /usr/lib/debug/lib/modules/2.6.32-504.el6.x86_64.debug/vmlinux vmcore crash 6.1.0-5.el6 Copyright (C) 2002-2012 Red Hat, Inc. Copyright (C) 2004, 2005, ...
6 votes
2 answers
924 views

At my wits end. What could cause my server to randomly hard reset? (Seems to be related to ZFS)

I have a server that I built years ago that has worked like a champ. But within the past few months it has started to become seriously unstable with no discernible pattern. I have been debugging it ...
3 votes
1 answer
2k views

Troubleshoot random server freezes without log entries

We are experiencing a very particular and unique problem on our C# application which is running under .NET framework 4.7.2, in kiosk mode on Windows 10 Operating System that runs on a Lenovo ...
3 votes
8 answers
42k views

How to track down the cause of Windows Server 2008 crashing?

I have Windows Server 2008 running under VMware. Recently, its started to crash roughly every day, with continuous 100% CPU utilization, and no response in the GUI. Is there a step-by-step ...
5 votes
5 answers
9k views

Why does my debian server freeze?

I installed Debian 9 ("Stretch") in a virtual machine hosted on ESXi 6.5 The OS is up-to-date and nothing else has been installed but VMware tools. Sometimes when I execute a command, the server will ...
2 votes
0 answers
103 views

What causes these strange characters (@^@^@^@^) in /var/log/messages? [duplicate]

One of my servers stops responding occasionally, today I checked the logs and I seen the attached entries. I assumed it uses too much memory and crashes, but seeing this log, I am not sure, what can ...
6 votes
2 answers
2k views

Server freezes without kernel panic

We are running a KVM node which is crashing irregularly showing a very strange behaviour. The interesting thing is that we already had this problem with another node which crashed every 1-2 weeks. As ...
0 votes
1 answer
392 views

SBS 2011 fine until you login - Crash

Never come across this one in my time with SBS 2011. The server boots up fine to the Ctrl Alt Del screen. If you leave it there all email etc works fine, but if you login the screen goes black and ...
2 votes
0 answers
363 views

PCIe: Why pciehp gives contradictory log info

I am running fio jobs on my NVMe SSD and hotplug it then. The platform is hot-pluggable and the system is Centos 7.0.Several seconds after my plug-out, the system encounters a crash and gives these ...

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