Hangs is an speaking term for subsribing the event that a server or program gets stuck in it's own code. This will cause the server to not respond, but will neither shut down. You will only see an frozen screen and can't do anything, besides a force restart by pressing the power button or removing ...

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268 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 ...
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113 views

What can cause an entire Red Hat server to “hang”?

We've got two Red Hat servers which "hangs" at regular intervals. The systems become unresponsive for 20 - 30 seconds, and then return back to "normal". The systems are not virtualized, and runs on ...
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0answers
13 views

EXSI4.0. 2 different kernels - one boots other locks up immediately, how to check initrd difference

I have a ESXI4.0.0 (v4) host, where I am trying to install a guest. The host machine is a regular Intel PC. I have 2 different ISO images (heavily modified version of SLES for a commercial product), ...
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2answers
635 views

mstsc freezes after entering credentials

At some point in Windows session (usually days) I can no longer make RDP connections. When running mstsc and entering credentials, all buttons are getting disabled and the UI freezes. Existing ...
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0answers
220 views

libvirt / kvm guests take very long time to start after host reboot

Host system is CentOS 6.5 x86_64. I have setup an Ubuntu guest by following this wiki. The guest works, but: if I reboot the host, it takes a very long time (about 30 minutes on the last reboot) ...
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1answer
854 views

Windows Server 2008 R2 Freezes at Login

We have a Windows Server 2008 R2 install on our company desktop server which has been working fine for the last 3 years (with regular updates) Recently, we restarted our server (due to slow file ...
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1answer
743 views

Linux server hangs, where to look for possible reason? [closed]

Linux server hangs for several times without knowing the exact reason. Which file or log should I look at? The server responds to ping, but I can not ssh to it. And when I plug a monitor into it, it ...
2
votes
1answer
3k views

vmware virtual machine keeps freezing

Strangely I have a virtual machine that keeps constantly freezing for some seconds or minutes. On the OS side, the CPU and memory used are quite low. On VMWare side, it's the same, the machine never ...
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82 views

ACL PS Script - hangs on 08 R2 PS v3; works fine on W8 PS v4

This script was designed to make application of permissions to a new server much easier. It is not doing that currently :( For some reason it works just fine on my Win 8 machine, where I made it. ...
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2answers
2k views

MySQL SELECT query hangs

On my server I have 6 MySQL databases. They all power Wordpress websites. For some reason, 2 of these databases are not accessible. To my knowledge they use INNODB, but I can't confirm it as even ...
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2answers
633 views

linux server hangs after “running local boot scripts”

after a sudden electricity break down one of the company servers (ubuntu) hangs at boot. I have an OK message for "running local boot scripts (/etc/rc.local)" but it freeze there and a black screep ...
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61 views

GNU/Linux: nfsd will not die

I have a server that will not export NFS. It seems nfsd is hanging. So in an attempt to restart it, I tried to kill nfsd: # ps aux |grep '\[nfsd\]' | wc -l 8 # killall -9 nfsd # ps aux |grep ...
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1answer
1k views

Tomcat is closing randomly

We are using Tomcat 7.0.21 for production. Server is hanging randomly for last week. It creates files like hs_err_pid4528.log under bin folder. There are two parts in logs. JRE version: 7.0_21-b11 ...
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2answers
607 views

CentOS stopped loading after I added something to /etc/rc.d/rc.local

I am very new in Linux (first day). I needed to add my program to the OS startup. I could not find a solution, so I tried to do something that could solve my issue. I added my line of text ...
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votes
1answer
475 views

SmartOS reboots spontaneously

I run a SmartOS system on a Hetzner EX4S (Intel Core i7-2600, 32G RAM, 2x3Tb SATA HDD). There are six virtual machines on the host: [root@10-bf-48-7f-e7-03 ~]# vmadm list UUID ...
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1answer
2k views

apache hangs frequently with semop

My Apache hangs frequently with multiple threads. Each process get stucked for hours. Backtrace looks like this: (gdb) backtrace #0 0x00002af60c22b2d7 in semop () from /lib64/libc.so.6 #1 ...
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3answers
1k views

Debian Linux server hangs after a week or so

I have 2 Debian Linux 6.0.4 servers that have a strange behaviour: after 5-7-10 days they hang. By this I mean the servers need to be restarted and before that ping won't answer. I've been struggling ...
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votes
3answers
907 views

MySQL on ubuntu very high IOWAIT

Can anyone advice what is going on with my setup. I have mysql server on ubuntu which periodically produce very high iowait. for long time up to 10-20 minutes. During this time system and database ...
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2answers
790 views

After applying patches and rebooting, RHEL 5.3 hangs on udev

I suspect that one of the packages in the last system updated is causing problems with the system rebooting. When I reboot, the server hangs on udev. Here are a list of the updates that preceeded ...
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3answers
191 views

My MS AD server hangs without any information [closed]

At Random times my Microsoft AD Server gets totally frozen (but i can see that the cursor moves freely and num lock status is also fine but on the screen i dont see anything other than the ...
2
votes
2answers
2k views

ssh initial prompt hangs for 10 minutes but console login and initial prompt is very responsive - why?

I have been running an ESXi 4.0 server for months with a couple of WinServer2003 and several Ubuntu Server 10.4 VMs. The performance has been impressive on 6GB i7 Asus P6T hardware. Suddenly, a week ...
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0answers
393 views

JVM hangs with 100 IO wait on Ubuntu Maverick (AWS EC2 xlarge instance)

Have an xlarge instance in AWS running 9 Tomcats with heaps from 256M to 4G. With Ubuntu 10.04 the box sporadically hangs for a few hours with huge run queue (30-40), and nothing on CPU, then ...
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3answers
1k views

Dell PowerEdge 2950 III running XenServer with 2 VMs gets sluggish after a week and needs rebooted?

It has weird hangs and then random CPU spikes that do a ton at once. While remoted into the VMs I get an update all at once then it hangs for another 20 seconds. When it lets it go through I get a CPU ...
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1answer
349 views

MySQL queries hang site

I recently moved from a Dreamhost shared hosting account to a Linode 512mb VPS. The switch has been rather smooth for normal day to day operation of my site but some problems with MySQL have cropped ...
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votes
1answer
530 views

Apache forks a very high number of threads, and hangs

We have moved one of our sites to a new server, which once in a while completely hangs. At first this happened very rarely, maybe once per month, but now it's starting to happen every day. By hangs, I ...
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4answers
951 views

apache2 + mod_fastcgi + suexec + php5.2 = unstable on high load

I am hosting several (~30) different sites on one server with apache2+fastcgi+suexec+php5. Sites have different loads and different execution times of their scripts (some of them process request for ...
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3answers
125 views

Strange network behaviour on XP

I have a workstation which suddenly hangs the applications working over shared resources. But not for other TCP connections. For instance, I open windows explorer and browse on Z:\documents. Also I ...