Before i restart ntpd,ntpd process was running:
ntp 3993 0.0 0.0 7404 4156 ? Ss 10:21 0:00
/usr/sbin/ntpd -u ntp:ntp -g
root 3995 0.0 0.0 7404 2364 ? S 10:21 0:00
/usr/sbin/ntpd -u ntp:ntp -g
so,it should be killed by systemctl and restart a new ntpd process,but
it failed,i want to know systemd how to judge that a process is killed
completed to start a new service.
在 2016/5/12 16:51, Reindl Harald 写道:
Am 12.05.2016 um 09:17 schrieb liuxueping:
Hi:
It failed when i restarted ntpd service,the log showed:ntpd[3163]:
unable to bind to wildcard address 0.0.0.0 - another process may be
running - EXITING,and the ps command result showed:
ntp 3993 0.0 0.0 0 0 ? Ds 10:21 0:00 [ntpd]
root 3995 0.0 0.0 0 0 ? Z 10:21 0:00 [ntpd]
<defunct>
Maybe it failed because a ntpd process was still in system when started
a new ntpd service.If so, how does systemctl judge that a process is
over and start a new process?
most likely the running one was not started by ntpd.service and hence is
also not killed by systemctl - systemd is not a blind butcher like
shell-scripts - it *knows* which processes are part of a
service/service-group
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