First commit of Ceilometer Central Agent RA
This commit is contained in:
emilienm
parent
7413c2672d
commit
6cc0acd730
345
ocf/ceilometer-agent-central
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345
ocf/ceilometer-agent-central
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#!/bin/sh
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#
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#
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# OpenStack Ceilometer Central Agent Service (ceilometer-agent-central)
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#
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# Description: Manages an OpenStack Ceilometer Central Agent Service (ceilometer-agent-central) process as an HA resource
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#
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# Authors: Emilien Macchi
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# Mainly inspired by the Nova Scheduler resource agent written by Sebastien 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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#
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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_monitor_binary
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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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. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
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#######################################################################
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# Fill in some defaults if no values are specified
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OCF_RESKEY_binary_default="ceilometer-agent-central"
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OCF_RESKEY_config_default="/etc/ceilometer/ceilometer.conf"
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OCF_RESKEY_user_default="ceilometer"
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OCF_RESKEY_pid_default="$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 Ceilometer Central Agent Service (ceilometer-agent-central) process as an HA resource
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The 'start' operation starts the scheduler service.
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The 'stop' operation stops the scheduler 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 scheduler service is running
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The 'monitor' operation reports whether the scheduler 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="ceilometer-agent-central">
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<version>1.0</version>
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<longdesc lang="en">
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Resource agent for the OpenStack Ceilometer Central Agent Service (ceilometer-agent-central)
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May manage a ceilometer-agent-central instance or a clone set that
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creates a distributed ceilometer-agent-central cluster.
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</longdesc>
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<shortdesc lang="en">Manages the OpenStack Ceilometer Central Agent Service (ceilometer-agent-central)</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 Ceilometer Central Agent server binary (ceilometer-agent-central)
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</longdesc>
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<shortdesc lang="en">OpenStack Ceilometer Central Agent server binary (ceilometer-agent-central)</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 Ceilometer Central Agent Service (ceilometer-agent-central) configuration file
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</longdesc>
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<shortdesc lang="en">OpenStack Ceilometer Central Agent (ceilometer-agent-central registry) config file</shortdesc>
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<content type="string" default="${OCF_RESKEY_config_default}" />
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</parameter>
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<parameter name="user" unique="0" required="0">
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<longdesc lang="en">
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User running OpenStack Ceilometer Central Agent Service (ceilometer-agent-central)
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</longdesc>
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<shortdesc lang="en">OpenStack Ceilometer Central Agent Service (ceilometer-agent-central) user</shortdesc>
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<content type="string" default="${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 Ceilometer Central Agent Service (ceilometer-agent-central) instance
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</longdesc>
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<shortdesc lang="en">OpenStack Ceilometer Central Agent Service (ceilometer-agent-central) pid file</shortdesc>
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<content type="string" default="${OCF_RESKEY_pid_default}" />
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</parameter>
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<parameter name="amqp_server_port" unique="0" required="0">
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<longdesc lang="en">
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The listening port number of the AMQP server. Use for monitoring purposes
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</longdesc>
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<shortdesc lang="en">AMQP listening port</shortdesc>
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<content type="integer" default="${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 Ceilometer Central Agent Service (ceilometer-agent-central)
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</longdesc>
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<shortdesc lang="en">Additional parameters for ceilometer-agent-central</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="20" />
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<action name="stop" timeout="20" />
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<action name="status" timeout="20" />
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<action name="monitor" timeout="30" interval="20" />
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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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ceilometer_agent_central_check_port() {
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# This function has been taken from the squid RA and improved a bit
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# The length of the integer must be 4
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# Examples of valid port: "1080", "0080"
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# Examples of invalid port: "1080bad", "0", "0000", ""
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local int
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local cnt
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int="$1"
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cnt=${#int}
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echo $int |egrep -qx '[0-9]+(:[0-9]+)?(,[0-9]+(:[0-9]+)?)*'
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if [ $? -ne 0 ] || [ $cnt -ne 4 ]; then
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ocf_log err "Invalid port number: $1"
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exit $OCF_ERR_CONFIGURED
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fi
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}
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ceilometer_agent_central_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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ceilometer_agent_central_check_port $OCF_RESKEY_amqp_server_port
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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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ceilometer_agent_central_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 Ceilometer Central Agent (ceilometer-agent-central) 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 Ceilometer Central Agent (ceilometer-agent-central) is not running"
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return $OCF_NOT_RUNNING
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fi
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}
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ceilometer_agent_central_monitor() {
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local rc
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local pid
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local scheduler_amqp_check
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ceilometer_agent_central_status
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rc=$?
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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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# Check the connections according to the PID.
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# We are sure to hit the scheduler process and not other Cinder process with the same connection behavior (for example cinder-api)
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pid=`cat $OCF_RESKEY_pid`
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scheduler_amqp_check=`netstat -punt | grep -s "$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 err "Central Agent 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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ocf_log debug "OpenStack Ceilometer Central Agent (ceilometer-agent-central) monitor succeeded"
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return $OCF_SUCCESS
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}
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ceilometer_agent_central_start() {
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local rc
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ceilometer_agent_central_status
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rc=$?
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if [ $rc -eq $OCF_SUCCESS ]; then
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ocf_log info "OpenStack Ceilometer Central Agent (ceilometer-agent-central) already running"
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return $OCF_SUCCESS
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fi
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# run the actual ceilometer-agent-central 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 $!' > $OCF_RESKEY_pid
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# Spin waiting for the server to come up.
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while true; do
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ceilometer_agent_central_monitor
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rc=$?
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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 Ceilometer Central Agent (ceilometer-agent-central) 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 Ceilometer Central Agent (ceilometer-agent-central) started"
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return $OCF_SUCCESS
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}
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ceilometer_agent_central_stop() {
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local rc
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local pid
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ceilometer_agent_central_status
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rc=$?
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if [ $rc -eq $OCF_NOT_RUNNING ]; then
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ocf_log info "OpenStack Ceilometer Central Agent (ceilometer-agent-central) 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 Ceilometer Central Agent (ceilometer-agent-central) 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 $shutdown_timeout ]; do
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ceilometer_agent_central_status
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rc=$?
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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 $count + 1`
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sleep 1
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ocf_log debug "OpenStack Ceilometer Central Agent (ceilometer-agent-central) still hasn't stopped yet. Waiting ..."
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done
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ceilometer_agent_central_status
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rc=$?
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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 Ceilometer Central Agent (ceilometer-agent-central) 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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ocf_log info "OpenStack Ceilometer Central Agent (ceilometer-agent-central) 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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ceilometer_agent_central_validate || exit $?
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# What kind of method was invoked?
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case "$1" in
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start) ceilometer_agent_central_start;;
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stop) ceilometer_agent_central_stop;;
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status) ceilometer_agent_central_status;;
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monitor) ceilometer_agent_central_monitor;;
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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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