Extract the nova wait functionality into its own agent

Change-Id: I635ef96946e376b4182c15575edc3e02705d02be
This commit is contained in:
Andrew Beekhof 2016-04-22 13:43:53 +10:00
parent 3d724a29a9
commit 9c635bfe34
1 changed files with 236 additions and 0 deletions

236
ocf/nova-compute-wait Executable file
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#!/bin/sh
#
#
# nova-compute-wait agent manages compute daemons.
#
# Copyright (c) 2015
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
# Initialization:
###
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
###
: ${__OCF_ACTION=$1}
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="nova-compute-wait" version="1.0">
<version>1.0</version>
<longdesc lang="en">
OpenStack Nova Compute Server.
</longdesc>
<shortdesc lang="en">OpenStack Nova Compute Server</shortdesc>
<parameters>
<parameter name="auth_url" unique="0" required="1">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="username" unique="0" required="1">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
</parameter>
<parameter name="password" unique="0" required="1">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="tenant_name" unique="0" required="1">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="domain" unique="0" required="0">
<longdesc lang="en">
DNS domain in which hosts live, useful when the cluster uses short names and nova uses FQDN
</longdesc>
<shortdesc lang="en">DNS domain</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="endpoint_type" unique="0" required="0">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="no_shared_storage" unique="0" required="0">
<longdesc lang="en">
Deprecated option not in use
</longdesc>
<shortdesc lang="en">Deprecated</shortdesc>
<content type="boolean" default="0" />
</parameter>
<parameter name="evacuation_delay" unique="0" required="0">
<longdesc lang="en">
How long to wait for nova to finish evacuating instances elsewhere
before starting nova-compute. Only used when the agent detects
evacuations might be in progress.
You may need to increase the start timeout when increasing this value.
</longdesc>
<shortdesc lang="en">Delay to allow evacuations time to complete</shortdesc>
<content type="integer" default="120" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="600" />
<action name="stop" timeout="300" />
<action name="monitor" timeout="20" interval="10" depth="0"/>
<action name="validate-all" timeout="20" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# don't exit on TERM, to test that lrmd makes sure that we do exit
trap sigterm_handler TERM
sigterm_handler() {
ocf_log info "They use TERM to bring us down. No such luck."
return
}
nova_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
nova_start() {
state=$(attrd_updater -p -n evacuate -N ${NOVA_HOST} | sed -e 's/.*value=//' | tr -d '"' )
if [ "x$state" = x ]; then
: never been fenced
elif [ "x$state" = xno ]; then
: has been evacuated, however it could have been 1s ago
ocf_log info "Pausing to give evacuations from ${NOVA_HOST} time to complete"
sleep ${OCF_RESKEY_evacuation_delay}
else
ocf_log info "Waiting for pending evacuations from ${NOVA_HOST}"
while [ "x$state" != "xno" ]; do
state=$(attrd_updater -p -n evacuate -N ${NOVA_HOST} | sed -e 's/.*value=//' | tr -d '"' )
sleep 5
done
ocf_log info "Pausing to give evacuations from ${NOVA_HOST} time to complete"
sleep ${OCF_RESKEY_evacuation_delay}
fi
return $OCF_SUCCESS
}
nova_stop() {
return $OCF_SUCCESS
}
nova_monitor() {
return $OCF_SUCCESS
}
nova_notify() {
return $OCF_SUCCESS
}
nova_validate() {
rc=$OCF_SUCCESS
check_binary crudini
check_binary nova-compute
if [ ! -f /etc/nova/nova.conf ]; then
ocf_exit_reason "/etc/nova/nova.conf not found"
exit $OCF_ERR_CONFIGURED
fi
NOVA_HOST=$(crudini --get /etc/nova/nova.conf DEFAULT host 2>/dev/null)
if [ $? = 1 ]; then
short_host=$(uname -n | awk -F. '{print $1}')
if [ "x${OCF_RESKEY_domain}" != x ]; then
NOVA_HOST=${short_host}.${OCF_RESKEY_domain}
else
NOVA_HOST=$(uname -n)
fi
fi
if [ $rc != $OCF_SUCCESS ]; then
exit $rc
fi
return $rc
}
: ${OCF_RESKEY_evacuation_delay=120}
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
usage|help) nova_usage
exit $OCF_SUCCESS
;;
esac
case $__OCF_ACTION in
start) nova_validate; nova_start;;
stop) nova_stop;;
monitor) nova_validate; nova_monitor;;
notify) nova_notify;;
validate-all) exit $OCF_SUCCESS;;
*) nova_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc