-----Original Message----- From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Walter H. Sent: Sunday, February 4, 2018 9:03 AM To: centos at centos.org Subject: [CentOS] shutdown or poweroff? > just a simple question, my router has CentOS 6 with the apcupsd running, > in the log of > apcupsd I see this: > > 2018-02-01 19:05:54 +0100 apcupsd 3.14.12 (29 March 2014) redhat > startup succeeded > 2018-02-04 15:52:43 +0100 Power failure. > 2018-02-04 15:52:49 +0100 Running on UPS batteries. > 2018-02-04 15:53:00 +0100 Reached remaining time percentage limit on > batteries. > 2018-02-04 15:53:00 +0100 Initiating system shutdown! > 2018-02-04 15:53:00 +0100 User logins prohibited > 2018-02-04 15:53:37 +0100 apcupsd exiting, signal 15 > 2018-02-04 15:53:37 +0100 apcupsd shutdown succeeded > > does this mean the shutdown was successfull? > is there other log where I can verify this: because shutting down squid > takes almost a minute or so ... Things changed a bit from the sysv implementation (see http://www.apcupsd.org/manual/manual.html#system-shutdown-test) when systemd came into the picture as many naïve or hack approaches were no longer necessary. It looks like the current packages drop the needed scripts in /lib/systemd/system-shutdown (see https://www.freedesktop.org/software/systemd/man/systemd-halt.service.html) So now with the state file and that script, your UPS (if setup and possible) will be signaled to interrupt power at a safe point once the daemon initiates shutdown. Your next startup log will indicate if a dirty mount was discovered. You should also check /etc/apcupsd/apcupsd.conf for the behavior and time values, there aren't many options and the file is short.