diff options
Diffstat (limited to 'heartbeat/pound')
| -rwxr-xr-x | heartbeat/pound | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/heartbeat/pound b/heartbeat/pound new file mode 100755 index 0000000..48aa221 --- /dev/null +++ b/heartbeat/pound @@ -0,0 +1,343 @@ +#!/bin/sh +# +# +# Pound +# +# Description: Manage pound instances as a HA resource +# +# Author: Taro Matsuzawa <btm@tech.email.ne.jp> +# +# License: GNU General Public License (GPL) +# +# See usage() for more details +# +# OCF instance parameters: +# OCF_RESKEY_pid +# OCF_RESKEY_binary +# OCF_RESKEY_ctl_binary +# OCF_RESKEY_socket_path +# OCF_RESKEY_config +# OCF_RESKEY_name +# OCF_RESKEY_maxfiles +# +####################################################################### +# Initialization: +: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} +. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs + +####################################################################### +# Set default paramenter values + +# Set these two first, as other defaults depend on it +OCF_RESKEY_name_default=${OCF_RESOURCE_INSTANCE} +: ${OCF_RESKEY_name=${OCF_RESKEY_name_default}} + +OCF_RESKEY_config_default="" +OCF_RESKEY_binary_default=pound +OCF_RESKEY_ctl_binary_default=poundctl +OCF_RESKEY_pid_default=/var/run/pound_${OCF_RESKEY_name}.pid +OCF_RESKEY_socket_path_default=/var/lib/pound/pound.cfg +OCF_RESKEY_maxfiles_default="" + +: ${OCF_RESKEY_config=${OCF_RESKEY_config_default}} +: ${OCF_RESKEY_binary=${OCF_RESKEY_binary_default}} +: ${OCF_RESKEY_ctl_binary=${OCF_RESKEY_ctl_binary_default}} +: ${OCF_RESKEY_pid=${OCF_RESKEY_pid_default}} +: ${OCF_RESKEY_socket_path=${OCF_RESKEY_socket_path_default}} +: ${OCF_RESKEY_maxfiles=${OCF_RESKEY_maxfiles_default}} + +meta_data() { + cat <<END +<?xml version="1.0"?> +<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> +<resource-agent name="pound" version="1.0"> +<version>1.0</version> + +<longdesc lang="en"> +The Pound Resource Agent can manage Pound instances. +</longdesc> +<shortdesc lang="en">Manage a Pound instance</shortdesc> + +<parameters> + +<parameter name="config" unique="1" required="1"> +<longdesc lang="en"> +The Pound configuration file that Pound should manage, for example +"/etc/pound.cfg". +</longdesc> +<shortdesc lang="en">Pound configuration file</shortdesc> +<content type="string" default="${OCF_RESKEY_config_default}" /> +</parameter> + +<parameter name="name" unique="1"> +<longdesc lang="en"> +Override the name of the instance that should be given to Pound +(defaults to the resource identifier). +</longdesc> +<shortdesc lang="en">Instance name</shortdesc> +<content type="string" default="${OCF_RESKEY_name_default}" /> +</parameter> + +<parameter name="pid" unique="1"> +<longdesc lang="en"> +Write the process's PID to the specified file. +The default will include the specified name, i.e.: +"/var/run/pound_production.pid". Unlike what this help message shows, +it is most likely not necessary to change this parameter. +</longdesc> +<shortdesc lang="en">Pidfile</shortdesc> +<content type="string" default="${OCF_RESKEY_pid_default}" /> +</parameter> + +<parameter name="binary"> +<longdesc lang="en"> +This is used to start Pound server. +Normally use pound. +</longdesc> +<shortdesc lang="en"></shortdesc> +<content type="string" default="${OCF_RESKEY_binary_default}" /> +</parameter> + +<parameter name="ctl_binary"> +<longdesc lang="en"> +This is used to watch Pound status via Unix socket. +Normally use poundctl. +</longdesc> +<shortdesc lang="en"></shortdesc> +<content type="string" default="${OCF_RESKEY_ctl_binary_default}" /> +</parameter> + +<parameter name="socket_path"> +<longdesc lang="en"> +Write the process's Unix socket. +This parameter is same 'Control' parameter in configuration file, i.e.: +Control "/var/lib/pound/pound.cfg". +</longdesc> +<shortdesc lang="en"></shortdesc> +<content type="string" default="${OCF_RESKEY_socket_path_default}" /> +</parameter> + +<parameter name="maxfiles"> +<longdesc lang="en"> +Determines how many files pound is allowed to open at +a time. Helps to fix the 'Too many open files' error message. +</longdesc> +<shortdesc lang="en">Allowed number of open files.</shortdesc> +<content type="integer" default="${OCF_RESKEY_maxfiles_default}" /> +</parameter> + +</parameters> + +<actions> +<action name="start" timeout="20s" /> +<action name="stop" timeout="20s" /> +<action name="monitor" timeout="20s" interval="10s" depth="0" /> +<action name="status" timeout="20s" /> +<action name="meta-data" timeout="5s" /> +<action name="validate-all" timeout="20s" /> +</actions> +</resource-agent> +END +} + +####################################################################### + + +pound_usage() { + cat <<END +usage: $0 {start|stop|monitor|validate-all|meta-data} + +Expects to have a fully populated OCF RA-compliant environment set. +END +} + +pound_status() { + local pid + local rc + + # FAILED = pidfile exist, but no running proc (or mismatch pid) + # SUCCES = contents of pidfile == running process id + # NOTRUN = no pidfile, no running process + + # check if pidfile exists and larger than 0 bytes + if [ -s $OCF_RESKEY_pid ]; then + # it does, now check if the pid exists + pid=$(cat $OCF_RESKEY_pid) + ocf_run kill -s 0 $pid + rc=$? + if [ $rc -eq 0 ]; then + ocf_log info "Pound is running" + # check if the poundctl + ocf_run $OCF_RESKEY_ctl_binary -c $OCF_RESKEY_socket_path + p_rc=$? + if [ "$p_rc" -eq 0 ]; then + ocf_log info "poundctl reports success" + return $OCF_SUCCESS + else + ocf_log err "poundctl reports error" + return $OCF_ERR_GENERIC + fi + else + ocf_log err "Pound PID file exists, but pound is not running" + return $OCF_ERR_GENERIC + fi + fi + + return $OCF_NOT_RUNNING +} + +pound_start() { + local rc + local backend_options + + pound_status + rc=$? + if [ $rc -eq $OCF_SUCCESS ]; then + ocf_log info "Pound already running" + return $OCF_SUCCESS + fi + + # check configuration before start + ocf_run $OCF_RESKEY_binary \ + -c -f $OCF_RESKEY_config + c_rc=$? + if [ "$c_rc" -ne 0 ]; then + ocf_log err "Pound configuration file is not valid" + return $OCF_ERR_CONFIGURED + fi + + if [ -n "$OCF_RESKEY_maxfiles" ]; then + ulimit -n $OCF_RESKEY_maxfiles + u_rc=$? + if [ "$u_rc" -ne 0 ]; then + ocf_log warn "Could not set ulimit for open files for Pound to '$OCF_RESKEY_maxfiles'" + fi + fi + + ocf_run $OCF_RESKEY_binary \ + -f $OCF_RESKEY_config \ + -p $OCF_RESKEY_pid + rc=$? + if [ $rc -ne 0 ]; then + ocf_log err "Pound failed to start" + return $OCF_ERR_GENERIC + fi + + # Spin waiting for pound to come up. + # Let the CRM/LRM time us out if required + while true; do + pound_status + rc=$? + [ $rc -eq $OCF_SUCCESS ] && break + if [ $rc -ne $OCF_NOT_RUNNING ]; then + ocf_log err "Pound start failed" + exit $OCF_ERR_GENERIC + fi + sleep 2 + done + + ocf_log info "Pound started succesfully" + return $OCF_SUCCESS +} + +pound_stop() { + local rc + local pid + + pound_status + rc=$? + if [ $rc -eq $OCF_NOT_RUNNING ]; then + ocf_log info "Pound already stopped" + return $OCF_SUCCESS + fi + + # kill the pound process + pid=$(cat $OCF_RESKEY_pid) + ocf_run kill -s 0 $pid + rc=$? + + if [ $rc -ne 0 ]; then + ocf_log warn "Pound pid is not a valid process. Assume it is already stopped" + rm -f $OCF_RESKEY_pid + return $OCF_SUCCESS + fi + + ocf_run kill -s TERM $pid + rc=$? + + if [ $rc -ne 0 ]; then + ocf_log err "Pound failed to stop" + return $OCF_ERR_GENERIC + fi + + # stop waiting + shutdown_timeout=$((($OCF_RESKEY_CRM_meta_timeout/1000)-5)) + count=0 + while [ $count -lt $shutdown_timeout ]; do + # check if process still exists + ocf_run kill -s 0 $pid + rc=$? + if [ $rc -ne 0 ]; then + # Pound stopped succesfully, so let's delete the pidfile + rm -f $OCF_RESKEY_pid + break + fi + count=$(expr $count + 1) + sleep 1 + ocf_log info "Pound still hasn't stopped yet. Waiting..." + done + + pound_status + rc=$? + if [ $rc -ne $OCF_NOT_RUNNING ]; then + # Poound didn't quit on a SIGTERM, try SIGKILL + ocf_log warn "Pound failed to stop after ${shutdown_timeout}s using SIGTERM. Trying SIGKILL..." + ocf_run kill -s KILL $pid + # delete the pidfile + rm -f $OCF_RESKEY_pid + fi + + ocf_log info "Pound stopped" + return $OCF_SUCCESS +} + + +pound_validate() { + if [ -f $OCF_RESKEY_config ]; then + return $OCF_SUCCESS + else + return $OCF_ERR_INSTALLED + fi +} + + +case $__OCF_ACTION in + meta-data) + meta_data + exit $OCF_SUCCESS + ;; + start) + pound_start + ;; + stop) + pound_stop + ;; + monitor|status) + pound_status + ;; + validate-all) + pound_validate + ;; + usage|help) + pound_usage + exit $OCF_SUCCESS + ;; + *) + pound_usage + exit $OCF_ERR_UNIMPLEMENTED + ;; +esac +rc=$? +ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc" +exit $rc + |