Add support for vrrp_track_process (#45)

* Add support for vrrp_track_process

* Add documentation

* Fix full_command

* Make v2.2.2 the default version

README.md

@@ -17,7 +17,7 @@ Set up the latest or a specific version of [Keepalived](http://www.keepalived.or
 #### Variables
 
 * `keepalived_git_repo`: [default: `https://github.com/acassen/keepalived.git`]: Keepalived git repo
-* `keepalived_version`: [default: `v2.1.5`]: Keepalived version to install
+* `keepalived_version`: [default: `v2.2.2`]: Keepalived version to install
 
 * `keepalived_install`: [default: `[]`]: Additional packages to install (e.g. `['libnl-3-dev', 'libnl-genl-3-dev', 'libnl-route-3-dev', 'libnfnetlink-dev']`)
 * `keepalived_configure_options`: [default: `[]`]: Options to pass to `./configure`
@@ -55,6 +55,18 @@ Set up the latest or a specific version of [Keepalived](http://www.keepalived.or
 * `keepalived_vrrp_scripts.key.rise`: [optional]: Required number of successes for OK transition
 * `keepalived_vrrp_scripts.key.fall`: [optional]: Required number of successes for KO transition
 
+* `keepalived_vrrp_track_processes`: [default: `{}`]: VRRP process declarations
+* `keepalived_vrrp_track_processes.key`: The name of the VRRP script
+* `keepalived_vrrp_track_processes.key.process`: The process to monitor (with optional parameters)
+* `keepalived_vrrp_track_processes.key.param_match`: [optional]: If matching parameters, this specifies a `partial` match (i.e. the first n parameters match exactly), or an `initial` match, i.e. the last parameter may be longer that the parameter configured
+* `keepalived_vrrp_track_processes.key.weight`: [optional]: The check weight to adjust the priority
+* `keepalived_vrrp_track_processes.key.quorum`: [optional]: Minimum number of processes for success
+* `keepalived_vrrp_track_processes.key.quorum_max`: [optional]: Maximum number of processes for success
+* `keepalived_vrrp_track_processes.key.fork_delay`: [optional]: Time to delay after process quorum gained after fork before consider process up
+* `keepalived_vrrp_track_processes.key.terminate_delay`: [optional]: Time to delay after process quorum lost before consider process down
+* `keepalived_vrrp_track_processes.key.delay`: [optional]: This sets `fork_delay` and `terminate_delay`
+* `keepalived_vrrp_track_processes.key.full_command`: [optional]: Normally process string is matched against the process name, as shown on the `Name`: line in `/proc/PID/status`, unless parameters are specified
+
 * `keepalived_vrrp_instances`: [default: `{}`]: VRRP instance declarations
 * `keepalived_vrrp_instances.key`: The name of the VRRP instance
 * `keepalived_vrrp_instances.key.interface`: Interface bound by VRRP
@@ -72,6 +84,7 @@ Set up the latest or a specific version of [Keepalived](http://www.keepalived.or
 * `keepalived_vrrp_instances.key.preempt_delay`: [optional]: Seconds after startup until preemption (if not disabled by `nopreempt`). Range: 0 (default) to 1000 **NOTE:** For this to work, the initial state of this entry must be BACKUP
 * `keepalived_vrrp_instances.key.track_interfaces`: [optional]: Interface states we monitor
 * `keepalived_vrrp_instances.key.track_scripts`: [optional]: Scripts state we monitor
+* `keepalived_vrrp_instances.key.track_processes`: [optional]: Processes state we monitor
 
 * `keepalived_vrrp_instances.key.notify`: [optional]: Scripts that is invoked when a server changes state
 * `keepalived_vrrp_instances.key.notify_user`: [optional]: Specify the user / group to run this script under (since `1.3.0`, e.g. `'nobody nogroup'`)
@@ -100,7 +113,7 @@ None
       - name: log-detail
     keepalived_vrrp_scripts:
       chk_haproxy:
-        script: '/bin/pidof haproxy'
+        script: '/usr/bin/pgrep haproxy'
         weight: 2
         interval: 1
 

defaults/main.yml

@@ -1,7 +1,7 @@
 # defaults file
 ---
 keepalived_git_repo: https://github.com/acassen/keepalived.git
-keepalived_version: v2.1.5
+keepalived_version: v2.2.2
 keepalived_install: []
 keepalived_configure_options: []
 keepalived_options: []
@@ -19,5 +19,6 @@ keepalived_global_defs_smtp_connect_timeout: 30
 keepalived_vrrp_script_map: {}
 
 keepalived_vrrp_scripts: {}
+keepalived_vrrp_track_processes: {}
 
 keepalived_vrrp_instances: {}

templates/etc/keepalived/keepalived.conf.j2

@@ -1,4 +1,4 @@
-# {{ ansible_managed }}
+{{ ansible_managed | comment }}
 
 global_defs {
   notification_email {
@@ -45,6 +45,36 @@ vrrp_script {{ key }} {
 }
 {% endfor %}
 
+{% for key, value in keepalived_vrrp_track_processes.items() | sort %}
+vrrp_track_process {{ key }} {
+  process {{ value.process }}
+{% if value.param_match is defined %}
+  param_match {{ value.param_match }}
+{% endif %}
+{% if value.weight is defined %}
+  weight {{ value.weight }}
+{% endif %}
+{% if value.quorum is defined %}
+  quorum {{ value.quorum }}
+{% endif %}
+{% if value.quorum_max is defined %}
+  quorum_max {{ value.quorum_max }}
+{% endif %}
+{% if value.fork_delay is defined %}
+  fork_delay {{ value.fork_delay }}
+{% endif %}
+{% if value.terminate_delay is defined %}
+  terminate_delay {{ value.terminate_delay }}
+{% endif %}
+{% if value.delay is defined %}
+  delay {{ value.delay }}
+{% endif %}
+{% if value.full_command is defined and value.full_command | bool %}
+  full_command
+{% endif %}
+}
+{% endfor %}
+
 {% for key, value in keepalived_vrrp_instances.items() | sort %}
 vrrp_instance {{ key }} {
   interface {{ value.interface }}
@@ -103,6 +133,14 @@ vrrp_instance {{ key }} {
   }
 {% endif %}
 
+{% if value.track_processes is defined %}
+  track_process {
+{% for track_process in value.track_processes %}
+    {{ track_process }}
+{% endfor %}
+  }
+{% endif %}
+
 {% if value.unicast_peer is defined %}
   unicast_peer {
     {{ value.unicast_peer }}

tests/vars/vagrant.yml

@@ -31,7 +31,7 @@ keepalived_options:
 
 keepalived_vrrp_scripts:
   chk_sshd:
-    script: '/bin/pidof sshd'
+    script: '/usr/bin/pgrep haproxy'
     weight: 2
     interval: 1
     timeout: 2