From: Giuseppe Paterno <[email protected]> --- doc/examples/GanetiMaster.in | 285 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100755 doc/examples/GanetiMaster.in
diff --git a/doc/examples/GanetiMaster.in b/doc/examples/GanetiMaster.in new file mode 100755 index 0000000..55c8cfc --- /dev/null +++ b/doc/examples/GanetiMaster.in @@ -0,0 +1,285 @@ +#!/bin/sh +# +# Resource Agent for managing Ganeti master role. +# +# License: GNU General Public License (GPL) +# +# (c) 2010-2013 Giuseppe Paterno' <[email protected]> +# Guido Trotter <[email protected]> +# +# +# This resource agent will ensure that ganeti-masterd and +# ganeti-rapi are running in the master node. +# +# *WARNING*: This has not been extensively tested +# +# Copy in: +# /usr/lib/ocf/resource.d/ganeti/ +# + +# Agent version +VERSION="0.3" + +: ${OCF_ROOT=/usr/lib/ocf} +# Load standard OCF functions +: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat} +. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs + +#/usr/lib/ganeti/daemon-util check-config + +## Adding in path Ganeti +PATH=$PATH:@PKGLIBDIR@ + +## Binaries +DAEMON_UTIL="daemon-util" +MASTERD="ganeti-masterd" +CLUSTER_CLI="gnt-cluster" +RAPI="ganeti-rapi" + +## Not using Ganeti's voting system +## as pacemaker will take care of voting and quorum +MASTERD_OPTIONS="--no-voting --yes-do-it" + +## Who am I +HOSTNAME=$(hostname -f) + +## List of master candidates +MASTER_CND_FILE="/var/lib/ganeti/ssconf_master_candidates" + +## RAPI endpoint +RAPI_URL="https://localhost:5080/2/info"; + +# Pre-flight checks +ganeti_master_validate_all() { + + # Check binaries + check_binary $DAEMON_UTIL + check_binary $MASTERD + check_binary $RAPI + check_binary $CLUSTER_CLI + + # Check if I'm master/master-candidate + grep -Fx $HOSTNAME $MASTER_CND_FILE >/dev/null + + if [ $? -ne 0 ] ; then + ocf_log err "$HOSTNAME is not Ganeti master neither master candidate" + return $OCF_ERR_INSTALLED + fi + + return $OCF_SUCCESS + +} + +# Script usage :) +ganeti_master_usage() { + + cat << END +usage: $0 action + +action: + start : start Ganeti master role + stop : stop Ganeti mater role + status : return the status of Ganeti master daemon + monitor : return if Ganeti Master daemon is working + meta-data : show meta data message + validate-all: validate the instance parameters + +END + + return $OCF_ERR_ARGS +} + +# Return meta-data information +ganeti_master_meta_data() { + cat <<END +<?xml version="1.0"?> +<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> +<resource-agent name="GanetiMaster"> +<version>$VERSION</version> + +<longdesc lang="en"> +OCF script to manage the ganeti master role in a cluster. +Can be used to failover the ganeti master between master candidate nodes. +</longdesc> + +<shortdesc lang="en">Manages the ganeti master role</shortdesc> + +<parameters> +</parameters> + +<actions> +<action name="start" timeout="60s" /> +<action name="stop" timeout="60s" /> +<action name="monitor" depth="0" timeout="20s" interval="30s" /> +<action name="meta-data" timeout="5s" /> +<action name="recover" timeout="20s" /> +<action name="reload" timeout="30s" /> +</actions> +</resource-agent> +END + + return $OCF_SUCCESS +} + +# Start Master +ganeti_master_start() { + # exit immediately if configuration is not valid + ganeti_master_validate_all || exit $? + + # Check if masterd is running and start if not + is_masterd_running + + if [ $? -ne 0 ] + then + + # Check who's the previous master + CUR_MASTER=$($CLUSTER_CLI getmaster) + ocf_log debug "Current master is $CUR_MASTER" + + # Executing failover if we are not the master + if [ "x$CUR_MASTER" != "x$HOSTNAME" ] ; then + ocf_log info "$CUR_MASTER is no longer the master, taking over ..." + $CLUSTER_CLI master-failover $MASTERD_OPTIONS + else + # Start masterd + ocf_log info "Starting $MASTERD" + ocf_run $DAEMON_UTIL start $MASTERD $MASTERD_OPTIONS + fi + + # Distribute configuration if I wasn't + # the previous master. I cannot guarantee + # the conf of a dead node + ocf_log info "Redistributing config in the Ganeti cluster ..." + $CLUSTER_CLI redist-conf + + ## I should check the exit code + ## but masterd might fail activating IP + + fi + + # Check if RAPI endpoint is running and start if not + is_rapi_running + + if [ $? -ne 0 ] + then + + # Start RAPI + ocf_log info "Starting $RAPI" + ocf_run $DAEMON_UTIL start $RAPI || exit $OCF_ERR_GENERIC + + fi + + return $OCF_SUCCESS + +} + +# Stop Master +ganeti_master_stop() { + + # Stopping masterd + ocf_log info "Sopping $MASTERD" + ocf_run $DAEMON_UTIL stop $MASTERD + + # Stopping RAPI + ocf_log info "Stopping $RAPI" + ocf_run $DAEMON_UTIL stop $RAPI + + return $OCF_SUCCESS + +} + +## Check if RAPI is running +is_rapi_running() { + + curl -k $RAPI_URL >/dev/null 2>/dev/null + + if [ $? -ne 0 ] + then + ocf_log info "RAPI endpoint not running." + return $OCF_NOT_RUNNING + else + ocf_log info "RAPI endpoint running." + return $OCF_SUCCESS + fi + +} + +## Check if masterd is running +is_masterd_running() { + + $CLUSTER_CLI master-ping + + if [ $? -ne 0 ] + then + ocf_log info "Master daemon not running." + return $OCF_NOT_RUNNING + else + ocf_log info "Master daemon running." + return $OCF_SUCCESS + fi + +} + +# Monitor masterd status +ganeti_master_monitor() { + + is_masterd_running + master_status=$? + + is_rapi_running + rapi_status=$? + + if [ $master_status -eq 0 -a $rapi_status -eq 0 ] + then + ocf_log info "Ganeti master service is running" + return $OCF_SUCCESS + else + ocf_log info "Ganeti master service is not running" + return $OCF_NOT_RUNNING + fi + +} + + +# Make sure meta-data and usage always succeed +case $__OCF_ACTION in + + meta-data) ganeti_master_meta_data + exit $OCF_SUCCESS + ;; + usage|help) ganeti_master_usage + exit $OCF_SUCCESS + ;; + +esac + +# Anything other than meta-data and usage must pass validation +ganeti_master_validate_all || exit $? + +# Translate each action into the appropriate function call +case $__OCF_ACTION in + + start) ganeti_master_start + ;; + stop) ganeti_master_stop + ;; + status|monitor) ganeti_master_monitor + ;; + promote) exit $OCF_SUCCESS + ;; + demote) exit $OCF_SUCCESS + ;; + reload) ocf_log info "Reloading Ganeti Master..." + ganeti_master_start + ;; + validate-all) ;; + *) ganeti_master_usage + exit $OCF_ERR_UNIMPLEMENTED + ;; + +esac +rc=$? + +# Final debug +ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION returned $rc" +exit $rc -- 1.7.12.4 (Apple Git-37)
