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dnsadmin-ssl issue

Discussion in 'Bind/DNS/Nameserver' started by gertiebeth, May 22, 2008.

  1. gertiebeth

    gertiebeth Well-Known Member

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    My dnsadmin-ssl is hanging and causing high CPU usage. Is there anything I can do to stop this? What process can I restart so that I don't have to kill off the individual processes? I have 10 servers clustered together for DNS and this issue isn't specific to any one of the servers. It happens intermittently to all of them at different times.

    Code:
    24194 root      25   0   26   0:10.14  0.3 16664 6328 3696 R dnsadmin-ssl                                                           
16064 root      25   0   17  10:37.29  0.2 16664 3488 2832 D dnsadmin-ssl                                                           
24189 root      25   0   17   0:11.82  0.3 16664 6340 3696 D dnsadmin-ssl                                                           
16090 root      20   0   13  10:43.18  0.2 16664 3332 2832 D dnsadmin-ssl                                                           
16094 root      24   0   11  10:38.13  0.2 16664 3376 2832 D dnsadmin-ssl                                                           
16046 root      24   0    8  10:38.06  0.2 16664 3332 2832 D dnsadmin-ssl                                                           
16063 root      24   0    8  10:48.96  0.2 16664 3416 2832 D dnsadmin-ssl                                                           
16054 root      22   0    6  10:43.35  0.2 16664 3340 2832 D dnsadmin-ssl                                                           
16062 root      23   0    6  10:39.32  0.2 16664 3260 2832 D dnsadmin-ssl                                                           
16082 root      21   0    6  10:31.67  0.2 16664 3448 2832 R dnsadmin-ssl
     
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    #1 gertiebeth, May 22, 2008
  2. cPanelNick

    cPanelNick Administrator
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    Please open a tickets @

    https://tickets.cpanel.net/submit/

    If you strace them you should be able to tell why they are hanging.
     
    #2 cPanelNick, May 22, 2008
  3. gertiebeth

    gertiebeth Well-Known Member

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    Will open a ticket. But is there a way to kill all dnsadmin processes without having to kill them one by one?

    dnsadmin - SAVEZONE - yteQo6qmlI0O_ER0uRrnz --correlative
    dnsadmin - ADDZONECONF - 0uUtaxh977XMqr1rQs --correlative
    Code:
    Process 25436 attached - interrupt to quit
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
select(24, [4 7 11 18], NULL, NULL, {2, 549999}) = 4 (in [4 7 11 18], left {2, 550000})
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
select(24, [4 7 11 18], NULL, NULL, {2, 549999}) = 4 (in [4 7 11 18], left {2, 550000})
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
select(24, [4 7 11 18], NULL, NULL, {2, 549999}) = 4 (in [4 7 11 18], left {2, 550000})
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
select(24, [4 7 11 18], NULL, NULL, {2, 549999}) = 4 (in [4 7 11 18], left {2, 550000})
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
select(24, [4 7 11 18], NULL, NULL, {2, 549999}) = 4 (in [4 7 11 18], left {2, 550000})
read(18, "", 4096)                      = 0
read(11, "", 4096)                      = 0
read(7, "", 4096)                       = 0
read(4, "", 4096)                       = 0
waitpid(-1, 0xbffff998, WNOHANG)        = 0
     
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    #3 gertiebeth, Jun 8, 2008
  4. cPanelNick

    cPanelNick Administrator
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    Excellent work on the strace. Please pm me the ticket #. You should be able to kill off the child process. Take a look at pstree -p and kill off anything under the main dnsadmin process.
     
    #4 cPanelNick, Jun 8, 2008
  5. cPanelNick

    cPanelNick Administrator
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    This issue has been addressed in the latest EDGE build and should make its way down the line late last week.
     
    #5 cPanelNick, Jun 11, 2008
  6. benito

    benito Well-Known Member

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    Hello, im using stable and have the same problem. Any easy fix?
     
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    #6 benito, Jul 2, 2008
  7. myusername

    myusername Well-Known Member
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    Nick -

    Has this dnsadmin-ssl fix been implemented in the stable builds yet or perhaps release? Still seeing this issue on some machines and its not clear from your response how far down the line this patch has made it.
     
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    #7 myusername, Aug 4, 2008
  8. cPanelKenneth

    cPanelKenneth cPanel Development
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    The issue Nick addressed is fixed in all branches of 11.23.

    That said, a different issue emerged recently that causes dnsadmin-ssl to segfault, fill up /usr/local/cpanel/whostmgr/docroot with core files and create strange files in /var/named. This issue is addressed in the EDGE build we recently published and should be fixed in all branches later this week (barring incident).
     
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    #8 cPanelKenneth, Aug 5, 2008
  9. myusername

    myusername Well-Known Member
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    I assume these core files are safe to remove for now unless you would like to see them? Is it necesarry to open a ticket on it?

    Incidentally when I do a pstree -p and kill off anything under the main dnsadmin process starting at the lowest one it just replaced by a new PID.

    Can you make any suggestions in the meantime while we are waiting for the patch to come down the line?
     
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    #9 myusername, Aug 5, 2008
  10. cPanelKenneth

    cPanelKenneth cPanel Development
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    Thank you for the offer, however we were able to narrow down the issue and resolve it. You may remove the core files.

    The only reliable work around we suggest at this point is to disable use of dnsadmin-ssl via Tweak Settings. The non-compiled version does not have this issue. Once all the current syncs are complete, new syncs will happen with the non-compiled version.
     
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    #10 cPanelKenneth, Aug 5, 2008
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