Merge branch 'stretch-monit-systemd-timer' into 'stretch'

Run symbiosis-monit from a systemd timer.

See merge request !48

monit/debian/control

@@ -3,7 +3,7 @@ Section: web
 Priority: extra
 Maintainer: James Carter <jcarter@bytemark.co.uk>
 Uploaders: Patrick J Cherry <patrick@bytemark.co.uk>, Steve Kemp <steve@bytemark.co.uk>
-Build-Depends: debhelper (>= 7.0.0), txt2man, gem2deb, ruby
+Build-Depends: debhelper (>= 7.0.0), txt2man, gem2deb, ruby, dh-systemd
 Standards-Version: 3.9.6
 XS-Ruby-Versions: all
 

monit/debian/rules

@@ -14,7 +14,7 @@
 #export DH_RUBY_GEMSPEC=gem.gemspec
 
 %:
-	dh $@ --buildsystem=ruby --with ruby
+	dh $@ --buildsystem=ruby --with ruby,systemd
 
 override_dh_auto_build-indep:
 	$(MAKE) all

monit/debian/symbiosis-monit.install

-sbin/symbiosis-monit          usr/sbin/
+sbin/*                        usr/sbin/
 monit.d/*                     usr/share/symbiosis/monit/checks/
 templates/*                   usr/share/symbiosis/monit/
 lib/*                         usr/lib/ruby/vendor_ruby/
 test.d/*                      etc/symbiosis/test.d/
-
+system/*                      lib/systemd/system/

monit/sbin/symbiosis-monit-failure-email

+#!/bin/bash
+
+set -e
+
+args="--since=today"
+[ -e "/var/tmp/symbiosis-monit.cursor" ] && args="--after-cursor=$(</var/tmp/symbiosis-monit.cursor)"
+
+journalctl -b0 $args -o cat -u "symbiosis-monit.service" | mail -s "Symbiosis monitor detected service failure" root

monit/system/symbiosis-monit-failure-email.service

+[Unit]
+Description=Notify by email about symbiosis-monit failure
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/symbiosis-monit-failure-email

monit/system/symbiosis-monit.service

+[Unit]
+Description=Symbiosis monitor
+OnFailure=symbiosis-monit-failure-email.service
+
+[Service]
+Type=simple
+ExecStartPre=/bin/sh -c 'journalctl -o cat -n 0 -u %n --show-cursor | cut -f3 -d" " | sudo -u nobody tee /var/tmp/symbiosis-monit.cursor >/dev/null'
+ExecStart=/usr/sbin/symbiosis-monit -t email /etc/symbiosis/monit.d

monit/system/symbiosis-monit.timer

+[Unit]
+Description=Regularly execute symbiosis-monit.service
+
+[Timer]
+# run every 2 minutes
+OnCalendar=*:0/2
+
+[Install]
+WantedBy=timers.target