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Server is crashing so often!!!
Can anyone help? My server is crashing so often lately.. It has crashed 6 times in the last 10 days.. /var/log/messages was not showing anything until the last time it crashed.. But NOW it shows the following error while rebooting:
kernel: EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
kernel: EXT3-fs: recovery complete.
kernel: EXT3-fs: mounted filesystem with ordered data mode.
Twice when it went down the free buffer memory was below 100. That time there were some cron jobs running at around the same time. I corrected all that and thought the issue was solved. But again it crashed twice in a single day
It is a cpanel server with OS Red Hat Linux release 7.3
The current free -m shows
total used free shared buffers cached
Mem: 882 872 9 0 18 263
-/+ buffers/cache: 590 291
Swap: 2047 1 2046
See the bottom of this thread.
Our first servers at EV1 had this issue as well. May not be the same as yours, but worth checking out.
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Your free -m looks fine as far as i can see. Is there any way to see what shows up on the console screen when the server goes down?
Have you studied the log files for whats been going on right before the server goes down?
That file system error could just be a side effect from the server crashing, doesn't have anything to do with the problem itself.
Its really hard to tell what could be wrong, anything from a configuration problen to hardware to some kind of attack.
I really feel for you man, hope it works out. Do you have anyone that can take a look at the server for you, perhaps at your DC?
Well.. whenever the server crashes and comes back up, the /var/log/messages file shows time ahead of what it was when it crashed... So that doesnt exactly tell what was going on at that rime..!
I will check the thread which Hendricknet suggested..
OS Red Hat Linux release 7.3
7.3 did not and does not audit so that thread is not going to be much help.
I'd say do a reinstall...
thats the last option I can think about!
Does anyone have any other suggestions??
Any suggestions from anyone??
I think a reinstall is something i would try too. If you just make sure you have good backups of all user data, you should be ok right?
Perhaps also test the servers hardware with memtest or some other kind of stress test software.
Removed a lot of crons from root's cronlist and that has stopped the server from crashing so often!! I wonder how it helped??!! There werent A LOT of crons though..
Run the crons one by one until you run one and it crashes the server
John W, CISSP, C|EH
MS Information Security and Assurance
- Server Administration and Security
- Managed VPS and Dedicated Servers with VIP Service
good thought! I'll check..