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Server restarted on its own!

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Web Hosting Evangelist
Join Date: Mar 2005
Location: Michigan, USA
Posts: 523

Server restarted on its own!

This morning when I was going over the logs I noticed yesterday my server restarted on its own at about 9:30am. Yesterday I didnt log into my server all day. I checked all the logs and didn't see anything funny. I called the data center and they said they didnt restart the server. What would make it restart on its own?

About the only thing I changed is I upgraded from Centos 3.4 to 3.5. But that was almost a week agao.

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Join Date: Jan 2005
Location: Scotland, UK
Posts: 2,539

There are many reasons. /var/log/messages should contain the reason.

There are many problems with 3.5 I have seen lately. It causes multiple cPanel problems, which is why servers are getting downgraded.

dmesg << check that for any problems.

When you find the errors, please attach them here and we will guide you on how to fix them.


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Web Hosting Master
Join Date: Nov 2004
Location: England, UK, EU
Posts: 774
Are you running CPanel? Sometimes that logs in as root to restart your server, with no apperent reason. If so, try checking your CPanel logs.

Otherwise, it's possible that it could be a hardware problem. PSU's tend to break and cause restarts, if it happens again you may want to ask your DC to check it.

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Web Hosting Evangelist
Join Date: Mar 2005
Location: Michigan, USA
Posts: 523
There is no cPanel on the server only webmin. The server is used to host 6 personal websites.

This is the last two log lines from /var/log/messages before the server restart. Right after syslog: syslogd startup succeeded the server reboot

Jun 23 09:31:16 janken syslogd 1.4.1: restart.
Jun 23 09:31:16 janken syslog: syslogd startup succeeded

I have syslogd 1.4.1: restart every hour on the hour is this normal?

Here are the errors in dmesg

__iounmap: bad address c00fffd9
md: personality 3 is not loaded! Seen this message 7 times.

Nothing seems weard or out of place I dont get it. It must be a hardware problem.

Edit: I forgot to add the server is 2 years old.

WHT Addict
Join Date: Oct 2004
Posts: 133
Exactly. What kind is the power supply? How many Watts?
What it 'feeds', i.e. how many HDD, CPU & etc ?
Check those things since we have encountered such problem with one server, weak power supply,which at one moment caused similar problem - restarts.

Web Hosting Evangelist
Join Date: Mar 2005
Location: Michigan, USA
Posts: 523
Its a Dell Power Edge SC 600 server that has been modded. It use to be a P41.8ghz I changed it to a P4 2.5GHZ it also has 3 hard drives. It has two 160gig Maxtor ATA 133 hard drives running Raid 1 and it has a 250gig Western Digtial ATA 100 backup hard drive. The server has room for 5 hard drives with enough power connections for 5 drives, but I am only running 3.

Something is fishy, It had a loose power connection on the motherboard that caused the fans not tome come on. I fixed that and havent had a problem untill now.

I think it just may be time to retire the server and part it out. Maybe I can find a nice 2u case and then buy a new motherboard that supports the processor, ram and drives and switch it over to a 2u. The processor is only 8 months old.

I am building a new 1u server, I am just waiting on the fans. I just hope this server is going to hold up untill then. Once its built I am going to swap servers.


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