[ZBX-2239] zabbix server becomes defunct when killed Created: 2010 Mar 29  Updated: 2017 May 30  Resolved: 2010 Mar 29

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Server (S)
Affects Version/s: None
Fix Version/s: 1.8.2, 1.9.0 (alpha)

Type: Incident report Priority: Minor
Reporter: Aleksandrs Saveljevs Assignee: Unassigned
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate

 Description   

When zabbix_server is killed, it sometimes becomes forever defunct (zombie). The reason for this is that if a child process acquires a lock and then dies, the lock is not freed and the parent process cannot complete finalization steps which require that lock.

 Comments   
Comment by Aleksandrs Saveljevs [ 2010 Mar 29 ]

Fixed in pre-1.8.2 in r11202.

Comment by Ivan [ 2011 May 16 ]

km zabbix # zabbix_server -V
Zabbix Server v1.8.3 (revision 13928) (16 August 2010)
Compilation time: Feb 25 2011 19:15:45

km zabbix # /etc/init.d/zabbix-server stop

  • Stopping Zabbix server ... [ !! ]
    km zabbix # ps aux | grep zab
    zabbix 2930 0.0 3.6 44984 6916 ? SN 14:17 0:02 /usr/sbin/zabbix_server
    zabbix 2942 0.0 0.0 0 0 ? ZN 14:17 0:02 [zabbix_server] <defunct>
    zabbix 2943 1.7 0.0 0 0 ? ZN 14:17 1:40 [zabbix_server] <defunct>
    zabbix 2944 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2945 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2946 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2947 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2948 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2949 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2950 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2951 0.0 0.0 0 0 ? ZN 14:17 0:04 [zabbix_server] <defunct>
    zabbix 2952 0.4 0.0 0 0 ? ZN 14:17 0:28 [zabbix_server] <defunct>
    zabbix 2953 0.0 0.0 0 0 ? ZN 14:17 0:05 [zabbix_server] <defunct>
    zabbix 2954 0.6 0.0 0 0 ? ZN 14:17 0:35 [zabbix_server] <defunct>
    zabbix 2955 0.5 0.0 0 0 ? ZN 14:17 0:32 [zabbix_server] <defunct>
    zabbix 2956 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2957 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    zabbix 2958 0.0 0.0 0 0 ? ZN 14:17 0:00 [zabbix_server] <defunct>
    root 14477 0.0 0.4 4096 808 pts/1 S+ 15:55 0:00 grep --colour=auto zab
    zabbix 21271 0.0 0.0 2728 88 ? SN Apr07 0:00 /usr/sbin/zabbix_agentd
    zabbix 21272 0.3 0.3 2728 580 ? SN Apr07 175:31 /usr/sbin/zabbix_agentd
    zabbix 21273 0.1 0.3 2748 596 ? SN Apr07 110:24 /usr/sbin/zabbix_agentd
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