monit: add bundle with base config

bundles/monit/files/monitrc

@@ -0,0 +1,45 @@
+set daemon  30
+   with start delay 30
+set log syslog
+
+set mailserver localhost
+
+set mail-format { from: ${monit['from_address']} }
+% for alert_address in monit['alert_addresses']:
+set alert ${alert_address}
+% endfor
+
+set httpd unixsocket /var/run/monit.sock
+    use address 127.0.0.1
+    allow 127.0.0.1
+
+check system $HOST
+    if cpu usage > 95% for 10 cycles then alert
+    if memory usage > 80% then alert
+    if swap usage > 25% then alert
+
+check filesystem rootfs with path /
+    if space usage > 80% for 5 times within 15 cycles then alert
+    if space usage > 90% then alert
+    if inode usage > 90% then alert
+
+check process cron matching "/usr/sbin/cron"
+    start program = "/usr/bin/systemctl start cron.service"
+    stop program = "/usr/bin/systemctl stop cron.service"
+
+% for systemd_service in ('systemd-timesyncd', 'systemd-networkd', 'systemd-journald'):
+check process ${systemd_service} matching "/lib/systemd/${systemd_service}"
+    start program = "/usr/bin/systemctl start ${systemd_service}.service"
+    stop program = "/usr/bin/systemctl stop ${systemd_service}.service"
+% endfor
+
+check process sshd matching "/usr/sbin/sshd"
+    start program = "/bin/systemctl start sshd.service"
+    stop program = "/bin/systemctl stop sshd.service"
+    if failed port 22 for 2 cycles then restart
+    if 3 restarts within 5 cycles then alert
+
+check process postfix matching "/usr/lib/postfix/sbin/master"
+    start program = "/bin/systemctl start postfix.service"
+    stop program = "/bin/systemctl stop postfix.service"
+    if failed port 25 protocol smtp for 5 cycles then restart

bundles/monit/items.py

@@ -0,0 +1,38 @@
+svc_systemd = {
+    'monit': {
+        'needs': [
+            'pkg_apt:monit',
+        ],
+    },
+}
+
+files = {
+    '/etc/monit/monitrc': {
+        'mode': '0400',
+        'content_type': 'mako',
+        'needs': [
+            'pkg_apt:monit',
+        ],
+        'triggers': [
+            'svc_systemd:monit:restart',
+        ],
+        'context': {
+            'monit': node.metadata['monit'],
+        },
+    },
+}
+
+directories = {
+    '/etc/monit/conf-enabled': {
+        'purge': True,
+    },
+    '/etc/monit/conf-available': {
+        'purge': True,
+    },
+    '/etc/monit/conf.d': {
+        'purge': True,
+    },
+    '/etc/monit/templates': {
+        'purge': True,
+    },
+}

bundles/monit/metadata.py

@@ -0,0 +1,7 @@
+defaults = {
+    'apt': {
+        'packages': {
+            'monit': {},
+        },
+    },
+}