Adds custom ocf for HA of DataSource Node
ocf file for DseNode that datasources run on. When user want HA for DataSourceDriver, use this ocf for RA on Pacemaker. Partial-Bug: #1602853 Partially implements blueprint: high-availability-design Change-Id: I597797b29b40292f5a9542c521aabc577e5e9c2b
This commit is contained in:
Masahito Muroi
parent
1b40706e47
commit
cfb7a624ca
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#!/bin/sh
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#
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#
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# OpenStack Congress DataSource Node
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#
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# Description: Manages an OpenStack Congress DataSource Node as an HA resource
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#
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# Authors: Masahito Muroi
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#
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# Support: openstack-dev@lists.openstack.org
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# License: Apache Software License (ASL) 2.0
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#
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#
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# See usage() function below for more details ...
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#
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# OCF instance parameters:
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# OCF_RESKEY_binary
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# OCF_RESKEY_config
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# OCF_RESKEY_pid
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#######################################################################
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# Initialization:
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: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
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. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
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#######################################################################
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# Fill in some defaults if no values are specified
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OCF_RESKEY_binary_default="/usr/local/bin/congress-server"
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OCF_RESKEY_config_default="/etc/congress/congress.conf"
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OCF_RESKEY_node_id_default="datasource-node"
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OCF_RESKEY_pid_default="$HA_RSCTMP/$OCF_RESOURCE_INSTANCE.pid"
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: ${OCF_RESKEY_binary=${OCF_RESKEY_binary_default}}
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: ${OCF_RESKEY_config=${OCF_RESKEY_config_default}}
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: ${OCF_RESKEY_node_id=${OCF_RESKEY_node_id_default}}
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: ${OCF_RESKEY_pid=${OCF_RESKEY_pid_default}}
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#######################################################################
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usage() {
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cat <<UEND
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usage: $0 (start|stop|validate-all|meta-data|status|monitor)
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$0 manages an openstack congress datasource node as an ha resource
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The 'start' operation starts the datasource node
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The 'stop' operation stops the datasource node
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The 'validate-all' operation reports whether the parameters are valid
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The 'meta-data' operation reports this RA's meta-data information
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The 'status' operation reports whether the datasource node is running
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The 'monitor' operation reports whether the datasource node seems to be working
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UEND
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}
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meta_data() {
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cat <<END
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<?xml version="1.0"?>
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<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
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<resource-agent name="congress-datasource">
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<version>1.0</version>
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<longdesc lang="en">
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Resource agent for the OpenStack Congress DataSource Node
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May manage a dsenode that all datasources run on.
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</longdesc>
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<shortdesc lang="en">Manages the OpenStack DataSource Node</shortdesc>
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<parameters>
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<parameter name="binary" unique="0" required="0">
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<longdesc lang="en">
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Location of the OpenStack Congress binary
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</longdesc>
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<shortdesc lang="en">OpenStack Congress binary</shortdesc>
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<content type="string" default="${OCF_RESKEY_binary_default}" />
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</parameter>
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<parameter name="config" unique="0" required="0">
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<longdesc lang="en">
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Location of the OpenStack Congress configuration file
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</longdesc>
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<shortdesc lang="en">OpenStack Congress config file</shortdesc>
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<content type="string" default="${OCF_RESKEY_config_default}" />
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</parameter>
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<parameter name="node_id" unique="0" required="0">
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<longdesc lang="en">
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ID of the DataSource node
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</longdesc>
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<shortdesc lang="en">DataSource Node ID</shortdesc>
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<content type="string" default="${OCF_RESKEY_node_id_default}" />
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</parameter>
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<parameter name="pid" unique="0" required="0">
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<longdesc lang="en">
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The pid file to use for this OpenStack Congress instance
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</longdesc>
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<shortdesc lang="en">OpenStack Congress pid file</shortdesc>
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<content type="string" default="${OCF_RESKEY_pid_default}" />
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</parameter>
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<parameter name="additional_parameters" unique="0" required="0">
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<longdesc lang="en">
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Additional parameters to pass on to the OpenStack Congress
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</longdesc>
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<shortdesc lang="en">Additional parameters for Congress</shortdesc>
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<content type="string" />
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</parameter>
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</parameters>
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<actions>
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<action name="start" timeout="10" />
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<action name="stop" timeout="10" />
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<action name="status" timeout="10" />
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<action name="monitor" timeout="5" interval="10" />
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<action name="validate-all" timeout="5" />
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<action name="meta-data" timeout="5" />
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</actions>
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</resource-agent>
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END
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}
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#######################################################################
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# Functions invoked by resource manager actions
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congress_validate() {
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local rc
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check_binary $OCF_RESKEY_binary
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if [ ! -f $OCF_RESKEY_config ]; then
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if ! ocf_is_probe; then
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ocf_log err "Config $OCF_RESKEY_config doesn't exist"
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return $OCF_ERR_INSTALLED
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fi
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ocf_log_warn "Config $OCF_RESKEY_config not available during a probe"
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fi
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true
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}
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congress_status() {
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local pid
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local rc
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if [ ! -f $OCF_RESKEY_pid ]; then
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ocf_log info "OpenStack Congress is not running"
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return $OCF_NOT_RUNNING
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else
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pid=`cat $OCF_RESKEY_pid`
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fi
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ocf_run -warn kill -s 0 $pid
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rc=$?
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if [ $rc -eq 0 ]; then
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return $OCF_SUCCESS
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else
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ocf_log info "Old PID file found, but OpenStack Congress" \
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"is not running"
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return $OCF_NOT_RUNNING
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fi
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}
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congress_monitor() {
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local rc
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local pid
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congress_status
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rc=$?
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# If status returned anything but success, return that immediately
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if [ $rc -ne $OCF_SUCCESS ]; then
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return $rc
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fi
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ocf_pidfile_status $OCF_RESKEY_pid
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rc=$?
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if [ $rc -ne 0 ]; then
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pid=`cat $OCF_RESKEY_pid`
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ocf_log error "This pid: $pid from Congress is not running."
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return $OCF_NOT_RUNNING
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fi
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ocf_log debug "OpenStack Congress monitor succeeded"
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return $OCF_SUCCESS
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}
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congress_start() {
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local rc
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congress_status
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rc=$?
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if [ $rc -eq $OCF_SUCCESS ]; then
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ocf_log info "OpenStack Congress already running"
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return $OCF_SUCCESS
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fi
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su ${OCF_RESKEY_user} -s /bin/sh -c "${OCF_RESKEY_binary} \
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--config-file=$OCF_RESKEY_config --datasources \
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--node_id=$OCF_RESKEY_node_id \
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$OCF_RESKEY_additional_parameters"' >> /dev/null 2>&1 & echo $!' \
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> $OCF_RESKEY_pid
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# Spin waiting for the server to come up.
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# Let the CRM/LRM time us out if required
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while true; do
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congress_monitor
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rc=$?
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[ $rc -eq $OCF_SUCCESS ] && break
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if [ $rc -ne $OCF_NOT_RUNNING ]; then
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ocf_log err "OpenStack Congress start failed"
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exit $OCF_ERR_GENERIC
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fi
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sleep 1
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done
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ocf_log info "OpenStack Congress started"
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return $OCF_SUCCESS
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}
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congress_stop() {
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local rc
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local pid
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congress_status
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rc=$?
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if [ $rc -eq $OCF_NOT_RUNNING ]; then
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ocf_log info "OpenStack Congress already stopped"
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return $OCF_SUCCESS
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fi
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# Try SIGTERM
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pid=`cat $OCF_RESKEY_pid`
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ocf_run kill -s TERM $pid
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rc=$?
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if [ $rc -ne 0 ]; then
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ocf_log err "OpenStack Congress couldn't be stopped"
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exit $OCF_ERR_GENERIC
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fi
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# stop waiting
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shutdown_timeout=15
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if [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then
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shutdown_timeout=$((($OCF_RESKEY_CRM_meta_timeout/1000)-5))
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fi
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count=0
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while [ $count -lt $shutdown_timeout ]; do
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congress_status
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rc=$?
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if [ $rc -eq $OCF_NOT_RUNNING ]; then
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break
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fi
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count=`expr $count + 1`
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sleep 1
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ocf_log debug "OpenStack Congress still hasn't stopped yet. Waiting ..."
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done
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congress_status
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rc=$?
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if [ $rc -ne $OCF_NOT_RUNNING ]; then
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# SIGTERM didn't help either, try SIGKILL
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ocf_log info "OpenStack Congress failed to stop" \
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"after ${shutdown_timeout}s using SIGTERM. Trying SIGKILL ..."
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ocf_run kill -s KILL $pid
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fi
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ocf_log info "OpenStack Congress stopped"
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rm -f $OCF_RESKEY_pid
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return $OCF_SUCCESS
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}
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#######################################################################
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case "$1" in
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meta-data)
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meta_data
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exit $OCF_SUCCESS
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;;
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usage|help)
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usage
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exit $OCF_SUCCESS
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;;
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esac
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# Anything except meta-data and help must pass validation
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congress_validate || exit $?
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# What kind of method was invoked?
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case "$1" in
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start)
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congress_start
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;;
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stop)
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congress_stop
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;;
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status)
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congress_status
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;;
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monitor)
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congress_monitor
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;;
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validate-all)
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;;
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*)
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usage
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exit $OCF_ERR_UNIMPLEMENTED
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;;
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esac
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