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Thread: Services are always going down
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07-26-2009, 12:13 AM #1Aspiring Evangelist
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Services are always going down
Hi all,
Just recently we've been noticing our services repeatedly going down.
Ie. http, named, mysql
Any suggestions?
Thanks.
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07-26-2009, 12:24 AM #2Web Hosting Master
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Is this a VPS?
What's the memory usage?
What do the logs show when they're down?
Is the system rebooting?≈ PeakVPN.Com | Complete Privacy VPN | Cloud Hosting | Guaranteed Security | 1Gbps-10Gbps Unmetered
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07-26-2009, 12:29 AM #3Aspiring Evangelist
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Yes, this is run off a VPS.
There is no lack of ram, which logs should I take a look at?
The system is not rebooting.
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07-26-2009, 12:36 AM #4Web Hosting Master
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'dmesg' check for the messages at the bottom.
Check: /etc/httpd/logs/error_log
/var/log/messages
output of: 'free'
or
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07-26-2009, 12:48 AM #5Web Hosting Master
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Andrew,
I had this problem on a new server that was set up a few weeks ago, In my case the named service would fail every 7 to 10 hours. The problem is that this did not show up in my initial load testing before the server went live. Thankfully there were only 2 very understanding customers on the server who accpepted my sincere aploligies (and an account credit).
The problem was caused by the server booting into the incorrect Linux Kernel. I had to edit the grub configureation file and manually change the Kernel version. This seemed to fix it. You may need to involve your VPS provider for assistance as well. Even Unmanaged VPS providers will not say no to helping to fix this.
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07-26-2009, 01:02 AM #6Aspiring Evangelist
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Well, we manage our own node.
I ran a quick yum update on this VPS, and I think it seems to have fixed the problem. We haven't anymore problems as of yet, however I do suspect it was a hack attempt as a staff of mine was notified of services going offline by IM.
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07-26-2009, 01:12 AM #7Web Hosting Master
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07-26-2009, 01:13 AM #8Aspiring Evangelist
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And what was very strange is randomly we got a message saying "cPanel Layer 2 Install" or something similar come up while restarting some things.
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07-26-2009, 01:15 AM #9Aspiring Evangelist
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07-26-2009, 01:18 AM #10Web Hosting Master
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Andrew,
That is a normal message caused by a cPanel Update. See below for an example
Code:Waiting for cppop to shutdown......Done Waiting for cppop-ssl to shutdown......Done ==> Starting SSL tunnel... Waiting for cpsrvd to shutdown......Done Waiting for cpsrvd-ssl to shutdown......Done ==> Start Melange Chat Services... ==> Post Install Complete Broadcast message from root (): cPanel Layer 2 Install Complete Patching Mysql (1) Patching Mysql (2) Patching Mysql (3) Patching Mysql (4) Patching Mysql (1) Patching Mysql (2) Patching Mysql (3) Patching Mysql (4) Patching Mysql (1) Patching Mysql (2) Patching Mysql (3) Patching Mysql (4) Updating addon typecripts addonhpBB version:2.0.19-1.0.......Done
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07-26-2009, 01:21 AM #11Aspiring Evangelist
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The thing is the VPS doesn't even have cPanel on it.
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07-26-2009, 01:23 AM #12Web Hosting Master
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07-26-2009, 01:35 AM #13Aspiring Evangelist
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Strange enough it comes back with nothing:
#ps aux|grep cpanel |wc -l
1
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07-26-2009, 01:39 AM #14Web Hosting Master
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Andrew,
Now thats even stranger but as long as the VPS stays up without problem, I would not give it much attention.
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07-26-2009, 01:40 AM #15Web Hosting Master
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07-26-2009, 01:41 AM #16Web Hosting Master
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07-26-2009, 01:45 AM #17Aspiring Evangelist
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I got this message from the VPS, accessed through the host node.
I'm very confused also...
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07-26-2009, 01:46 AM #18Web Hosting Master
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Do a locate cpanel
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07-26-2009, 02:53 AM #19Aspiring Evangelist
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07-26-2009, 03:05 AM #20Web Hosting Master
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Very weird.
Oh well, I'd just go through all the logs and make sure everything looks up to spec. Chase it down further if it happens again.≈ PeakVPN.Com | Complete Privacy VPN | Cloud Hosting | Guaranteed Security | 1Gbps-10Gbps Unmetered
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07-26-2009, 10:38 AM #21Aspiring Evangelist
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Thanks for all your suggestions.
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