Apache httpd 2.4.34 couldn't receive signal SIGTERM on SuSE 15












1















I have install apache httpd 2.4.34 on SLES 15, and there are six httpd processes running.



When I send signal SIGTERM to httpd process, all the six httpd process couldn't receive signal SIGTERM (I had gdb attched httpd process to catch signal SIGTERM),
but I find kill 15 11143 return 0 via command strace. But httpd could reiveive signal SIGKILL, it's very strange.



And apache httpd 2.4.34 running on other platform(SLES12, SLES11, RHEL7) could reiveive and handle signal SIGTERM normally.



Does anyone encounter this phenomenon?



+++
# cat /etc/os-release
NAME="SLES"
VERSION="15"
VERSION_ID="15"
PRETTY_NAME="SUSE Linux Enterprise Server 15"
ID="sles"
ID_LIKE="suse"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:15"

#uname -a
Linux linux-iv0h 4.12.14-23-default #1 SMP Tue May 29 21:04:44 UTC 2018 (cd0437b) x86_64 x86_64 x86_64 GNU/Linux

#ps aux|grep httpd
root 11143 0.0 0.6 23612 6380 ? Ss 04:33 0:00 ./httpd
nobody 11144 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
nobody 11145 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
nobody 11146 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
nobody 11147 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
nobody 11148 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
+++









share|improve this question





























    1















    I have install apache httpd 2.4.34 on SLES 15, and there are six httpd processes running.



    When I send signal SIGTERM to httpd process, all the six httpd process couldn't receive signal SIGTERM (I had gdb attched httpd process to catch signal SIGTERM),
    but I find kill 15 11143 return 0 via command strace. But httpd could reiveive signal SIGKILL, it's very strange.



    And apache httpd 2.4.34 running on other platform(SLES12, SLES11, RHEL7) could reiveive and handle signal SIGTERM normally.



    Does anyone encounter this phenomenon?



    +++
    # cat /etc/os-release
    NAME="SLES"
    VERSION="15"
    VERSION_ID="15"
    PRETTY_NAME="SUSE Linux Enterprise Server 15"
    ID="sles"
    ID_LIKE="suse"
    ANSI_COLOR="0;32"
    CPE_NAME="cpe:/o:suse:sles:15"

    #uname -a
    Linux linux-iv0h 4.12.14-23-default #1 SMP Tue May 29 21:04:44 UTC 2018 (cd0437b) x86_64 x86_64 x86_64 GNU/Linux

    #ps aux|grep httpd
    root 11143 0.0 0.6 23612 6380 ? Ss 04:33 0:00 ./httpd
    nobody 11144 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
    nobody 11145 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
    nobody 11146 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
    nobody 11147 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
    nobody 11148 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
    +++









    share|improve this question



























      1












      1








      1


      1






      I have install apache httpd 2.4.34 on SLES 15, and there are six httpd processes running.



      When I send signal SIGTERM to httpd process, all the six httpd process couldn't receive signal SIGTERM (I had gdb attched httpd process to catch signal SIGTERM),
      but I find kill 15 11143 return 0 via command strace. But httpd could reiveive signal SIGKILL, it's very strange.



      And apache httpd 2.4.34 running on other platform(SLES12, SLES11, RHEL7) could reiveive and handle signal SIGTERM normally.



      Does anyone encounter this phenomenon?



      +++
      # cat /etc/os-release
      NAME="SLES"
      VERSION="15"
      VERSION_ID="15"
      PRETTY_NAME="SUSE Linux Enterprise Server 15"
      ID="sles"
      ID_LIKE="suse"
      ANSI_COLOR="0;32"
      CPE_NAME="cpe:/o:suse:sles:15"

      #uname -a
      Linux linux-iv0h 4.12.14-23-default #1 SMP Tue May 29 21:04:44 UTC 2018 (cd0437b) x86_64 x86_64 x86_64 GNU/Linux

      #ps aux|grep httpd
      root 11143 0.0 0.6 23612 6380 ? Ss 04:33 0:00 ./httpd
      nobody 11144 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11145 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11146 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11147 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11148 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      +++









      share|improve this question
















      I have install apache httpd 2.4.34 on SLES 15, and there are six httpd processes running.



      When I send signal SIGTERM to httpd process, all the six httpd process couldn't receive signal SIGTERM (I had gdb attched httpd process to catch signal SIGTERM),
      but I find kill 15 11143 return 0 via command strace. But httpd could reiveive signal SIGKILL, it's very strange.



      And apache httpd 2.4.34 running on other platform(SLES12, SLES11, RHEL7) could reiveive and handle signal SIGTERM normally.



      Does anyone encounter this phenomenon?



      +++
      # cat /etc/os-release
      NAME="SLES"
      VERSION="15"
      VERSION_ID="15"
      PRETTY_NAME="SUSE Linux Enterprise Server 15"
      ID="sles"
      ID_LIKE="suse"
      ANSI_COLOR="0;32"
      CPE_NAME="cpe:/o:suse:sles:15"

      #uname -a
      Linux linux-iv0h 4.12.14-23-default #1 SMP Tue May 29 21:04:44 UTC 2018 (cd0437b) x86_64 x86_64 x86_64 GNU/Linux

      #ps aux|grep httpd
      root 11143 0.0 0.6 23612 6380 ? Ss 04:33 0:00 ./httpd
      nobody 11144 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11145 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11146 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11147 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      nobody 11148 0.0 0.3 23612 3248 ? S 04:33 0:00 ./httpd
      +++






      apache opensuse sigkill sigterm sles






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      edited Nov 23 '18 at 6:28







      Wen MingCai

















      asked Sep 30 '18 at 8:42









      Wen MingCaiWen MingCai

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