add Galera checks to mysql check plugin

checkman/mysql.galeradonor

@@ -0,0 +1,18 @@
+title: MySQL Database: Galera sync status
+agents: linux
+catalog: app/mysql
+license: GPL
+distribution: check_mk
+description:
+  This checks monitors if the value of wsrep_sst_donor has changed
+  since service discovery or last tabula rasa.
+
+  This check needs the agent plugin {mk_mysql} to be installed.
+  Further details about this plugin and monitoring of MySQL can be
+  found in the Check_MK online documentation in the article
+  "Monitoring MySQL with Check_MK".
+
+inventory:
+  On each host where the agent plugin {mk_mysql} is being installed
+  and the MySQL daemon is running one service per instance is being generated
+  if the instance has Galera enabled.

checkman/mysql.galerasize

@@ -0,0 +1,18 @@
+title: MySQL Database: Galera sync status
+agents: linux
+catalog: app/mysql
+license: GPL
+distribution: check_mk
+description:
+  This checks monitors the size of the Galera cluster and compares
+  it to size size of the cluster at service discovery.
+
+  This check needs the agent plugin {mk_mysql} to be installed.
+  Further details about this plugin and monitoring of MySQL can be
+  found in the Check_MK online documentation in the article
+  "Monitoring MySQL with Check_MK".
+
+inventory:
+  On each host where the agent plugin {mk_mysql} is being installed
+  and the MySQL daemon is running one service per instance is being generated
+  if the instance has Galera enabled.

checkman/mysql.galerastartup

@@ -0,0 +1,17 @@
+title: MySQL Database: Galera sync status
+agents: linux
+catalog: app/mysql
+license: GPL
+distribution: check_mk
+description:
+  This checks monitors the value of the Galera cluster address.
+
+  This check needs the agent plugin {mk_mysql} to be installed.
+  Further details about this plugin and monitoring of MySQL can be
+  found in the Check_MK online documentation in the article
+  "Monitoring MySQL with Check_MK".
+
+inventory:
+  On each host where the agent plugin {mk_mysql} is being installed
+  and the MySQL daemon is running one service per instance is being generated
+  if the instance has Galera enabled.

checkman/mysql.galerastatus

@@ -0,0 +1,18 @@
+title: MySQL Database: Galera sync status
+agents: linux
+catalog: app/mysql
+license: GPL
+distribution: check_mk
+description:
+  This checks monitors the status of the local Galera node and
+  returns CRIT when it is not "Primary".
+
+  This check needs the agent plugin {mk_mysql} to be installed.
+  Further details about this plugin and monitoring of MySQL can be
+  found in the Check_MK online documentation in the article
+  "Monitoring MySQL with Check_MK".
+
+inventory:
+  On each host where the agent plugin {mk_mysql} is being installed
+  and the MySQL daemon is running one service per instance is being generated
+  if the instance has Galera enabled.

checkman/mysql.galerasync

@@ -0,0 +1,18 @@
+title: MySQL Database: Galera sync status
+agents: linux
+catalog: app/mysql
+license: GPL
+distribution: check_mk
+description:
+  For Galera enabled MySQL instances this check monitors the
+  state of the sync on the local instance.
+
+  This check needs the agent plugin {mk_mysql} to be installed.
+  Further details about this plugin and monitoring of MySQL can be
+  found in the Check_MK online documentation in the article
+  "Monitoring MySQL with Check_MK".
+
+inventory:
+  On each host where the agent plugin {mk_mysql} is being installed
+  and the MySQL daemon is running one service per instance is being generated
+  if the instance has Galera enabled.

checks/mysql

@@ -221,3 +221,167 @@ check_info['mysql.connections'] = {
     "group": "mysql_connections",
     "has_perfdata": True,
 }
+
+#.
+#   .--Galera Sync Status--------------------------------------------------.
+#   |         ____       _                  ____                           |
+#   |        / ___| __ _| | ___ _ __ __ _  / ___| _   _ _ __   ___         |
+#   |       | |  _ / _` | |/ _ \ '__/ _` | \___ \| | | | '_ \ / __|        |
+#   |       | |_| | (_| | |  __/ | | (_| |  ___) | |_| | | | | (__         |
+#   |        \____|\__,_|_|\___|_|  \__,_| |____/ \__, |_| |_|\___|        |
+#   |                                             |___/                    |
+#   |                    ____  _        _                                  |
+#   |                   / ___|| |_ __ _| |_ _   _ ___                      |
+#   |                   \___ \| __/ _` | __| | | / __|                     |
+#   |                    ___) | || (_| | |_| |_| \__ \                     |
+#   |                   |____/ \__\__,_|\__|\__,_|___/                     |
+#   |                                                                      |
+#   +----------------------------------------------------------------------+
+
+def inventory_mysql_galerasync(parsed):
+    for instance, values in parsed.iteritems():
+        if values.get('wsrep_provider', 'none') != 'none' and u'wsrep_local_state_comment' in values:
+            yield instance, {}
+
+@get_parsed_item_data
+def check_mysql_galerasync(item, _no_params, data):
+    if u'wsrep_local_state_comment' in data:
+        if data[u'wsrep_local_state_comment'] == 'Synced':
+            state = 0
+        else:
+            state = 2
+        return (state, 'WSREP local state comment: %s' % data[u'wsrep_local_state_comment'])
+
+check_info['mysql.galerasync'] = {
+    "inventory_function"      : inventory_mysql_galerasync,
+    "check_function"          : check_mysql_galerasync,
+    "service_description"     : "MySQL Galera Sync %s",
+}
+
+#.
+#   .--Galera Donor--------------------------------------------------------.
+#   |      ____       _                  ____                              |
+#   |     / ___| __ _| | ___ _ __ __ _  |  _ \  ___  _ __   ___  _ __      |
+#   |    | |  _ / _` | |/ _ \ '__/ _` | | | | |/ _ \| '_ \ / _ \| '__|     |
+#   |    | |_| | (_| | |  __/ | | (_| | | |_| | (_) | | | | (_) | |        |
+#   |     \____|\__,_|_|\___|_|  \__,_| |____/ \___/|_| |_|\___/|_|        |
+#   |                                                                      |
+#   +----------------------------------------------------------------------+
+
+def inventory_mysql_galeradonor(parsed):
+    for instance, values in parsed.iteritems():
+        if values.get('wsrep_provider', 'none') != 'none' and u'wsrep_sst_donor' in values:
+            yield instance, {'wsrep_sst_donor': values['wsrep_sst_donor']}
+
+@get_parsed_item_data
+def check_mysql_galeradonor(item, params, data):
+    if u'wsrep_sst_donor' in data:
+        if data[u'wsrep_sst_donor'] == params['wsrep_sst_donor']:
+            return (0, 'WSREP sst donor contains "%s"' % data[u'wsrep_sst_donor'])
+        else:
+            return (1, 'WSREP sst donor contains "%s" (was at discovery "%s")' % (data[u'wsrep_sst_donor'], params['wsrep_sst_donor']))
+
+check_info['mysql.galeradonor'] = {
+    "inventory_function"      : inventory_mysql_galeradonor,
+    "check_function"          : check_mysql_galeradonor,
+    "service_description"     : "MySQL Galera Donor %s",
+}
+
+#.
+#   .--Galera Startup------------------------------------------------------.
+#   |  ____       _                  ____  _             _                 |
+#   | / ___| __ _| | ___ _ __ __ _  / ___|| |_ __ _ _ __| |_ _   _ _ __    |
+#   || |  _ / _` | |/ _ \ '__/ _` | \___ \| __/ _` | '__| __| | | | '_ \   |
+#   || |_| | (_| | |  __/ | | (_| |  ___) | || (_| | |  | |_| |_| | |_) |  |
+#   | \____|\__,_|_|\___|_|  \__,_| |____/ \__\__,_|_|   \__|\__,_| .__/   |
+#   |                                                             |_|      |
+#   +----------------------------------------------------------------------+
+
+def inventory_mysql_galerastartup(parsed):
+    for instance, values in parsed.iteritems():
+        if values.get('wsrep_provider', 'none') != 'none' and u'wsrep_cluster_address' in values:
+            yield instance, {}
+
+@get_parsed_item_data
+def check_mysql_galerastartup(item, _no_params, data):
+    if u'wsrep_cluster_address' in data:
+        if data[u'wsrep_cluster_address'] == 'gcomm://':
+            return (2, 'WSREP cluster address is empty')
+        else:
+            return (0, 'WSREP cluster address contains %s' % data[u'wsrep_cluster_address'])
+
+check_info['mysql.galerastartup'] = {
+    "inventory_function"      : inventory_mysql_galerastartup,
+    "check_function"          : check_mysql_galerastartup,
+    "service_description"     : "MySQL Galera Startup %s",
+}
+
+#.
+#   .--Galera Cluster Size-------------------------------------------------.
+#   |     ____       _                   ____ _           _                |
+#   |    / ___| __ _| | ___ _ __ __ _   / ___| |_   _ ___| |_ ___ _ __     |
+#   |   | |  _ / _` | |/ _ \ '__/ _` | | |   | | | | / __| __/ _ \ '__|    |
+#   |   | |_| | (_| | |  __/ | | (_| | | |___| | |_| \__ \ ||  __/ |       |
+#   |    \____|\__,_|_|\___|_|  \__,_|  \____|_|\__,_|___/\__\___|_|       |
+#   |                                                                      |
+#   |                           ____  _                                    |
+#   |                          / ___|(_)_______                            |
+#   |                          \___ \| |_  / _ \                           |
+#   |                           ___) | |/ /  __/                           |
+#   |                          |____/|_/___\___|                           |
+#   |                                                                      |
+#   +----------------------------------------------------------------------+
+
+def inventory_mysql_galerasize(parsed):
+    for instance, values in parsed.iteritems():
+        if values.get('wsrep_provider', 'none') != 'none' and u'wsrep_cluster_size' in values:
+            yield instance, {'invsize': saveint(values[u'wsrep_cluster_size'])}
+
+@get_parsed_item_data
+def check_mysql_galerasize(item, params, data):
+    if u'wsrep_cluster_size' in data:
+        size = saveint(data[u'wsrep_cluster_size'])
+        res = 0
+        txt = 'Cluster Size is %d' % size
+        perfdata = [('galera_size', size)]
+        if size != params['invsize']:
+            res = 2
+            txt += ' (was at discovery %d)' % params['invsize']
+        return (res, txt, perfdata)
+
+check_info['mysql.galerasize'] = {
+    "inventory_function"  : inventory_mysql_galerasize,
+    "check_function"      : check_mysql_galerasize,
+    "service_description" : "MySQL Galera Size %s",
+    "has_perfdata"        : True,
+}
+
+#.
+#   .--Galera Status-------------------------------------------------------.
+#   |      ____       _                  ____  _        _                  |
+#   |     / ___| __ _| | ___ _ __ __ _  / ___|| |_ __ _| |_ _   _ ___      |
+#   |    | |  _ / _` | |/ _ \ '__/ _` | \___ \| __/ _` | __| | | / __|     |
+#   |    | |_| | (_| | |  __/ | | (_| |  ___) | || (_| | |_| |_| \__ \     |
+#   |     \____|\__,_|_|\___|_|  \__,_| |____/ \__\__,_|\__|\__,_|___/     |
+#   |                                                                      |
+#   +----------------------------------------------------------------------+
+
+def inventory_mysql_galerastatus(parsed):
+    for instance, values in parsed.iteritems():
+        if values.get('wsrep_provider', 'none') != 'none' and u'wsrep_cluster_status' in values:
+            yield instance, {}
+
+@get_parsed_item_data
+def check_mysql_galerastatus(item, _no_params, data):
+    if u'wsrep_cluster_status' in data:
+        if data[u'wsrep_cluster_status'] == 'Primary':
+            state = 0
+        else:
+            state = 2
+        return (state, 'WSREP cluster status: %s' % data[u'wsrep_cluster_status'])
+
+check_info['mysql.galerastatus'] = {
+    "inventory_function"      : inventory_mysql_galerastatus,
+    "check_function"          : check_mysql_galerastatus,
+    "service_description"     : "MySQL Galera Status %s",
+}