Virtualmin/Webmin continually crash with strange errors

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#1 Thu, 05/02/2013 - 13:00
Romuloux

Virtualmin/Webmin continually crash with strange errors

Hi,

I have had virtualmin up and running about 300 domains for about 3 months now. Earlier this week I started getting error alerts from virtualmin that say this :

Monitor on myhostname for 'PostgreSQL Database Server' has detected that the service has gone down at 01/May/2013 19:10

The odd thing is, that I am running MySQL, not PostgreSQL. PostgreSQL is not set up and should never be running, and while I could access webmin it said that it was not one of the processes running.

In the past 24 hours, webmin went down and won't come back. I can restart it and it will run for about 30 seconds, then crash again.

The webserver itself is performing just fine and the memory on the server is at about 45% usage.

Also, I am on Centos 6.

Any suggestions about where I should start looking for a fix?

Thanks

Thu, 05/02/2013 - 13:24
Romuloux

So after doing some reading on here, it seems that it may have to do with upgrading a VPS while virtualmin is installed.

When I try and update system information, I get this error

Failed to query Postfix config command to get the current value of parameter process_id_directory:

I am very lost.

Thu, 05/02/2013 - 14:09
andreychek

Howdy,

Hmm, it sounds like there may be multiple issues there.

Are you by chance using OpenVZ?

If so, can you paste in the contents of your /proc/user_beancounters file?

-Eric

Thu, 05/02/2013 - 14:24
Romuloux

Here it is:

uid  resource                     held              maxheld              barrier                limit              failcnt
     1314:  kmemsize                 31030644             51576832           2147483646           2147483646                    0
            lockedpages                     0                    8               999999               999999                    0
            privvmpages                219972               262144               262144               262144                46876
            shmpages                     1189                 1861               131072               131072                    0
            dummy                           0                    0                    0                    0                    0
            numproc                        61                  177               999999               999999                    0
            physpages                  115288               262144                    0               262144                    0
            vmguarpages                     0                    0               131072           2147483647                    0
            oomguarpages                62687               126268               131072           2147483647                    0
            numtcpsock                     26                  178              7999992              7999992                    0
            numflock                       14                   65               999999               999999                    0
            numpty                          1                    1               500000               500000                    0
            numsiginfo                      0                   87               999999               999999                    0
            tcpsndbuf                  643232              3832440            214748160            396774400                    0
            tcprcvbuf                  425984              2916352            214748160            396774400                    0
            othersockbuf               194208               683576            214748160            396774400                    0
            dgramrcvbuf                     0                17440            214748160            396774400                    0
            numothersock                  198                  462              7999992              7999992                    0
            dcachesize               12842991             28703925           2147483646           2147483646                    0
            numfile                      2358                 5180             23999976             23999976                    0
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            numiptent                      41                   41               999999               999999                    0
Thu, 05/02/2013 - 22:08
andreychek

Ah, yeah, you appear to be getting memory failures. Look at the failcnt field on the right -- you'll see a lot of failures for the privvmpages row.

Each one of those failures refers to resources the kernel requested, that were denied by OpenVZ.

You'd need to increase your guaranteed RAM... or better, ask them to remove any burst RAM, as that generally only leads to trouble.

-Eric

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