Adding health check scripts.

hooks/cinder-hooks

@@ -248,6 +248,16 @@ function ha_relation_changed() {
   fi
 }
 
+function config_changed() {
+  # Save our scriptrc env variables for health checks
+  declare -a env_vars=(
+      'OPENSTACK_PORT_MCASTPORT="$(config-get ha-mcastport)"'
+      'OPENSTACK_SERVICE_API=cinder-api'
+      'OPENSTACK_SERVICE_SCHEDULER=cinder-scheduler'
+      'OPENSTACK_SERVICE_VOLUME=cinder-volume'
+  save_script_rc ${env_vars[@]}
+}
+
 arg0=$(basename $0)
 juju-log "cinder: Attempting to fire hook for: $arg0"
 case $arg0 in
@@ -269,5 +279,6 @@ case $arg0 in
   "ha-relation-joined") ha_relation_joined ;;
   "ha-relation-changed") ha_relation_changed ;;
   "upgrade-charm") upgrade_charm ;;
+  "config-changed") config_changed ;;
   *) exit 0
 esac

hooks/lib/openstack-common

@@ -315,6 +315,43 @@ function get_block_device() {
   return 0
 }
 
+##########################################################################
+# Description: Creates an rc file exporting environment variables to a
+# script_path local to the charm's installed directory.
+# Any charm scripts run outside the juju hook environment can source this
+# scriptrc to obtain updated config information necessary to perform health
+# checks or service changes
+#
+# Parameters: 
+#   An array of '=' delimited  ENV_VAR:value combinations to export.
+#   If optional script_path key is not provided in the array, script_path
+#     defaults to scripts/scriptrc
+##########################################################################
+function save_script_rc {
+  if [ ! -n "$JUJU_UNIT_NAME" ]; then
+     echo "Error: Missing JUJU_UNIT_NAME environment variable"
+     exit 1
+  fi
+  # our default unit_path
+  unit_path="/var/lib/juju/units/${JUJU_UNIT_NAME/\//-}/charm/scripts/scriptrc"
+  echo $unit_path
+  tmp_rc="/tmp/${JUJU_UNIT_NAME/\//-}rc"
+
+  echo "#!/bin/bash" > $tmp_rc
+  for env_var in "${@}"
+  do
+    if `echo $env_var | grep -q script_path`; then
+       # well then we need to reset the new unit-local script path
+       unit_path="/var/lib/juju/units/${JUJU_UNIT_NAME/\//-}/charm/${env_var/script_path=/}"
+    else
+       echo "export $env_var" >> $tmp_rc
+    fi 
+  done
+  chmod 755 $tmp_rc
+  mv $tmp_rc $unit_path
+}
+
+
 HAPROXY_CFG=/etc/haproxy/haproxy.cfg
 HAPROXY_DEFAULT=/etc/default/haproxy
 

scripts/add_to_cluster

@@ -0,0 +1,2 @@
+#!/bin/bash
+crm node online

scripts/health_checks.d/service_crm_status

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+

scripts/health_checks.d/service_ports_live

@@ -0,0 +1,13 @@
+#!/bin/bash
+# Validate that service ports are active
+HEALTH_DIR=`dirname $0`
+SCRIPTS_DIR=`dirname $HEALTH_DIR`
+. $SCRIPTS_DIR/scriptrc
+set -e
+
+# Grab any OPENSTACK_PORT* environment variables
+openstack_ports=`env| awk -F '=' '(/OPENSTACK_PORT/){print $2}'`
+for port in $openstack_ports
+do
+    netstat -ln | grep -q $port
+done

scripts/health_checks.d/service_running

@@ -0,0 +1,13 @@
+#!/bin/bash
+# Validate that service is running
+HEALTH_DIR=`dirname $0`
+SCRIPTS_DIR=`dirname $HEALTH_DIR`
+. $SCRIPTS_DIR/scriptrc
+set -e
+
+# Grab any OPENSTACK_SERVICE* environment variables
+openstack_service_names=`env| awk -F '=' '(/OPENSTACK_SERVICE/){print $2}'`
+for service_name in $openstack_service_names
+do
+    service $service_name status 2>/dev/null | grep -q running
+done

scripts/remove_from_cluster

@@ -0,0 +1,2 @@
+#!/bin/bash
+crm node standby