Merge "Add OCF file for cinder-backup"
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Zuul
Gerrit Code Review
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413
openstack/stx-ocf-scripts/src/ocf/cinder-backup
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413
openstack/stx-ocf-scripts/src/ocf/cinder-backup
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#!/bin/sh
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#
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#
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# OpenStack Cinder Backup (cinder-backup)
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#
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# Description: Manages an OpenStack Backup (cinder-backup) process as an HA resource
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#
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# Authors:
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# Mainly inspired by the cinder volume resource agent written by Sébastien Han
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#
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# Support: openstack@lists.launchpad.net
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# License: Apache Software License (ASL) 2.0
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#
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# (c) 2012 hastexo Professional Services GmbH
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#
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# Copyright (c) 2014 Wind River Systems, Inc.
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#
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# The right to copy, distribute, modify, or otherwise make use
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# of this software may be licensed only pursuant to the terms
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# of an applicable Wind River license agreement.
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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_user
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# OCF_RESKEY_pid
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# OCF_RESKEY_amqp_server_port
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# OCF_RESKEY_additional_parameters
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#######################################################################
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# Initialization:
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: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
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. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
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. /usr/bin/tsconfig
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#######################################################################
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# Fill in some defaults if no values are specified
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OCF_RESKEY_binary_default="cinder-backup"
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OCF_RESKEY_config_default="/etc/cinder/cinder.conf"
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OCF_RESKEY_user_default="cinder"
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OCF_RESKEY_pid_default="$HA_RSCTMP/$OCF_RESOURCE_INSTANCE.pid"
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OCF_RESKEY_amqp_server_port_default="5672"
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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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: ${OCF_RESKEY_user=${OCF_RESKEY_user_default}}
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: ${OCF_RESKEY_pid=${OCF_RESKEY_pid_default}}
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: ${OCF_RESKEY_amqp_server_port=${OCF_RESKEY_amqp_server_port_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 Cinder Backup (cinder-backup) process as an HA resource
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The 'start' operation starts the backup service.
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The 'stop' operation stops the backup service.
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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 backup service is running
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The 'monitor' operation reports whether the backup service 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="cinder-backup">
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<version>1.0</version>
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<longdesc lang="en">
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Resource agent for the OpenStack Cinder Backup (cinder-backup)
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May manage a cinder-backup instance or a clone set that
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creates a distributed cinder-backup cluster.
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</longdesc>
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<shortdesc lang="en">Manages the OpenStack Cinder Backup (cinder-backup)</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 Cinder Backup server binary (cinder-backup)
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</longdesc>
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<shortdesc lang="en">OpenStack Cinder Backup server binary (cinder-backup)</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 Cinder Backup (cinder-backup) configuration file
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</longdesc>
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<shortdesc lang="en">OpenStack Cinder Backup (cinder-backup) config file</shortdesc>
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<content type="string" default="${OCF_RESKEY_config_default}" />
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</parameter>
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<parameter name="user" unique="0" required="0">
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<longdesc lang="en">
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User running OpenStack Cinder Backup (cinder-backup)
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</longdesc>
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<shortdesc lang="en">OpenStack Cinder Backup (cinder-backup) user</shortdesc>
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<content type="string" default="${OCF_RESKEY_user_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 Cinder Backup (cinder-backup) instance
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</longdesc>
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<shortdesc lang="en">OpenStack Cinder Backup (cinder-backup) pid file</shortdesc>
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<content type="string" default="${OCF_RESKEY_pid_default}" />
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</parameter>
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<parameter name="amqp_server_port" unique="0" required="0">
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<longdesc lang="en">
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The listening port number of the AMQP server. Mandatory to perform a monitor check
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</longdesc>
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<shortdesc lang="en">AMQP listening port</shortdesc>
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<content type="integer" default="${OCF_RESKEY_amqp_server_port_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 Cinder Backup (cinder-backup)
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</longdesc>
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<shortdesc lang="en">Additional parameters for cinder-backup</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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cinder_backup_validate() {
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local rc
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check_binary $OCF_RESKEY_binary
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check_binary netstat
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# A config file on shared storage that is not available
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# during probes is OK.
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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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getent passwd $OCF_RESKEY_user >/dev/null 2>&1
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rc=$?
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if [ $rc -ne 0 ]; then
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ocf_log err "User $OCF_RESKEY_user doesn't exist"
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return $OCF_ERR_INSTALLED
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fi
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true
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}
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cinder_backup_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 Cinder Backup (cinder-backup) 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 Cinder Backup (cinder-backup) is not running"
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rm -f $OCF_RESKEY_pid
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return $OCF_NOT_RUNNING
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fi
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}
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cinder_backup_get_service_status() {
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local status_file=${VOLATILE_PATH}/cinder-backup.down-after
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if [[ -f "${status_file}" ]]; then
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echo "exists=True"
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if [[ "$(date -u +'%Y-%m-%d %H:%M:%S.%N')" < "$(cat ${status_file})" ]]; then
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echo "is_up=True"
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else
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echo "is_up=False"
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fi
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return 0
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else
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echo "exists=False"
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echo "is_up=False"
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return 1
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fi
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}
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cinder_backup_monitor() {
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local rc
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local pid
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local backup_amqp_check
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local check_service_status=$1; shift
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cinder_backup_status
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rc=$?
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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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# Grab cinder-backup PID
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pid=`cat $OCF_RESKEY_pid`
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# Check the connections according to the PID
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# We are sure to hit the backup process and not other cinder process with the same connection
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# behavior (for example nova-cert)
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backup_amqp_check=`netstat -punt | grep -s "$OCF_RESKEY_amqp_server_port" | grep -s "$pid" | grep -qs "ESTABLISHED"`
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rc=$?
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if [ $rc -ne 0 ]; then
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ocf_log info "Cinder Backup is not connected to the AMQP server: $rc"
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return $OCF_NOT_RUNNING
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fi
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# Is this needed?
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if [ $check_service_status == "check-service-status" ]; then
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local retries_left
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local retry_interval
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retries_left=3
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retry_interval=3
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while [ $retries_left -gt 0 ]; do
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retries_left=`expr $retries_left - 1`
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status=$(cinder_backup_get_service_status)
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rc=$?
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if [ $rc -ne 0 ]; then
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ocf_log err "Unable to get Cinder Backup status"
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if [ $retries_left -gt 0 ]; then
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sleep $retry_interval
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continue
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else
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return $OCF_ERR_GENERIC
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fi
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fi
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local exists
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local is_up
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eval $status
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if [ "$exists" == "True" ] && [ "$is_up" == "False" ]; then
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ocf_log err "Cinder Backup service status is down"
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if [ $retries_left -gt 0 ]; then
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sleep $retry_interval
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continue
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else
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ocf_log info "Trigger Cinder Backup guru meditation report"
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ocf_run kill -s USR2 $pid
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return $OCF_ERR_GENERIC
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fi
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fi
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break
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done
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fi
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ocf_log debug "OpenStack Cinder Backup (cinder-backup) monitor succeeded"
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return $OCF_SUCCESS
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}
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cinder_backup_start() {
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local rc
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cinder_backup_status
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rc=$?
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if [ $rc -eq $OCF_SUCCESS ]; then
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ocf_log info "OpenStack Cinder Backup (cinder-backup) already running"
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return $OCF_SUCCESS
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fi
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# run the actual cinder-backup daemon. Don't use ocf_run as we're sending the tool's output
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# straight to /dev/null anyway and using ocf_run would break stdout-redirection here.
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su ${OCF_RESKEY_user} -s /bin/sh -c "${OCF_RESKEY_binary} --config-file=$OCF_RESKEY_config \
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$OCF_RESKEY_additional_parameters"' >> /dev/null 2>&1 & echo $!' > $OCF_RESKEY_pid
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# Spin waiting for the server to come up.
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# Let the CRM/LRM time us out if required
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while true; do
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cinder_backup_monitor
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rc=$?
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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 Cinder Backup (cinder-backup) 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 Cinder Backup (cinder-backup) started"
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return $OCF_SUCCESS
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}
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cinder_backup_confirm_stop() {
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local my_bin
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local my_processes
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my_binary=`which ${OCF_RESKEY_binary}`
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my_processes=`pgrep -l -f "^(python|/usr/bin/python|/usr/bin/python2) ${my_binary}([^\w-]|$)"`
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if [ -n "${my_processes}" ]
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then
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ocf_log info "About to SIGKILL the following: ${my_processes}"
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pkill -KILL -f "^(python|/usr/bin/python|/usr/bin/python2) ${my_binary}([^\w-]|$)"
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fi
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}
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cinder_backup_stop() {
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local rc
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local pid
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cinder_backup_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 Cinder Backup (cinder-backup) already stopped"
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cinder_backup_confirm_stop
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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 Cinder Backup (cinder-backup) couldn't be stopped"
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cinder_backup_confirm_stop
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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 $shutdown_timeout ]; do
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cinder_backup_status
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rc=$?
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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 $count + 1`
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sleep 1
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ocf_log debug "OpenStack Cinder backup (cinder-backup) still hasn't stopped yet. Waiting ..."
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done
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cinder_backup_status
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rc=$?
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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 Cinder Backup (cinder-backup) failed to stop after ${shutdown_timeout}s \
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using SIGTERM. Trying SIGKILL ..."
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ocf_run kill -s KILL -$pid
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fi
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cinder_backup_confirm_stop
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ocf_log info "OpenStack Cinder Backup (cinder-backup) 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) meta_data
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exit $OCF_SUCCESS;;
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usage|help) usage
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exit $OCF_SUCCESS;;
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esac
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# Anything except meta-data and help must pass validation
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cinder_backup_validate || exit $?
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# What kind of method was invoked?
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case "$1" in
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start) cinder_backup_start;;
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stop) cinder_backup_stop;;
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status) cinder_backup_status;;
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monitor) cinder_backup_monitor "check-service-status";;
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validate-all) ;;
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*) usage
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exit $OCF_ERR_UNIMPLEMENTED;;
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esac
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