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Diffstat (limited to '')
| -rwxr-xr-x | agents/ocf/HealthCPU.in | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/agents/ocf/HealthCPU.in b/agents/ocf/HealthCPU.in new file mode 100755 index 0000000..4a8e7c3 --- /dev/null +++ b/agents/ocf/HealthCPU.in @@ -0,0 +1,212 @@ +#!/bin/sh +# +# ocf:pacemaker:HealthCPU resource agent +# +# Copyright 2004-2023 the Pacemaker project contributors +# +# The version control history for this file may have further details. +# +# This source code is licensed under the GNU General Public License version 2 +# (GPLv2) WITHOUT ANY WARRANTY. +# + +# +# Measures CPUs idling and writes #health-cpu status into the CIB +# +################################ +# +# TODO: Enter default values +# Error handling in getting uptime +# +################################## + +####################################################################### +# Initialization: + +: ${OCF_FUNCTIONS:="${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs"} +. "${OCF_FUNCTIONS}" +: ${__OCF_ACTION:="$1"} + +####################################################################### + +meta_data() { + cat <<END +<?xml version="1.0"?> +<resource-agent name="HealthCPU" version="@VERSION@"> +<version>1.1</version> + +<longdesc lang="en"> +System health agent that measures the CPU idling and updates the #health-cpu attribute. +</longdesc> +<shortdesc lang="en">System health CPU usage</shortdesc> + +<parameters> +<parameter name="state" unique-group="state"> +<longdesc lang="en"> +Location to store the resource state in. +</longdesc> +<shortdesc lang="en">State file</shortdesc> +<content type="string" default="${HA_VARRUN%%/}/health-cpu-${OCF_RESOURCE_INSTANCE}.state" /> +</parameter> + +<parameter name="yellow_limit" reloadable="1"> +<longdesc lang="en"> +Lower (!) limit of idle percentage to switch the health attribute to yellow. I.e. +the #health-cpu will go yellow if the %idle of the CPU falls below 50%. +</longdesc> +<shortdesc lang="en">Lower limit for yellow health attribute</shortdesc> +<content type="string" default="50"/> +</parameter> + +<parameter name="red_limit" reloadable="1"> +<longdesc lang="en"> +Lower (!) limit of idle percentage to switch the health attribute to red. I.e. +the #health-cpu will go red if the %idle of the CPU falls below 10%. +</longdesc> +<shortdesc lang="en">Lower limit for red health attribute</shortdesc> +<content type="string" default="10"/> +</parameter> + +</parameters> + +<actions> +<action name="start" timeout="10s" /> +<action name="stop" timeout="10s" /> +<action name="monitor" timeout="10s" interval="10s" start-delay="0s" /> +<action name="reload-agent" timeout="20s" /> +<action name="meta-data" timeout="5s" /> +<action name="validate-all" timeout="10s" depth="0" /> +</actions> +</resource-agent> +END +} + +####################################################################### + +healthcpu_usage() { + cat <<END +usage: $0 {start|stop|monitor|reload-agent|validate-all|meta-data} + +Expects to have a fully populated OCF RA-compliant environment set. +END +} + +healthcpu_start() { + healthcpu_monitor + if [ $? -eq $OCF_SUCCESS ]; then + return $OCF_SUCCESS + fi + touch "${OCF_RESKEY_state}" +} + +healthcpu_stop() { + healthcpu_monitor + if [ $? -eq $OCF_SUCCESS ]; then + rm "${OCF_RESKEY_state}" + fi + return $OCF_SUCCESS +} + +healthcpu_monitor() { + if [ -f "${OCF_RESKEY_state}" ]; then + + IDLE=$(top -b -n2 | grep Cpu | tail -1 | awk -F",|.[0-9][ %]id" '{ print $4 }') + # echo "System idle: " $IDLE + # echo "$OCF_RESKEY_red_limit" + # echo $OCF_RESKEY_yellow_limit + + if [ $IDLE -lt ${OCF_RESKEY_red_limit} ] ; then + # echo "System state RED!" + attrd_updater -n "#health-cpu" -U "red" -d "30s" + return $OCF_SUCCESS + fi + + if [ $IDLE -lt ${OCF_RESKEY_yellow_limit} ] ; then + # echo "System state yellow." + attrd_updater -n "#health-cpu" -U "yellow" -d "30s" + else + # echo "System state green." + attrd_updater -n "#health-cpu" -U "green" -d "30s" + fi + + return $OCF_SUCCESS + fi + + return $OCF_NOT_RUNNING +} + +healthcpu_reload_agent() { + # No action required + :; +} + +healthcpu_validate() { + # If specified, is yellow_limit a non-negative integer? + case "$OCF_RESKEY_yellow_limit" in + 0|[1-9]|[1-9][0-9]|100) ;; + *) return $OCF_ERR_CONFIGURED ;; + esac + + # If specified, is red_limit a non-negative integer? + case "$OCF_RESKEY_red_limit" in + 0|[1-9]|[1-9][0-9]|100) ;; + *) return $OCF_ERR_CONFIGURED ;; + esac + + # Host-specific checks + if [ "$OCF_CHECK_LEVEL" = "10" ]; then + + # Is the state directory writable? + state_dir=$(dirname "$OCF_RESKEY_state") + [ -d "$state_dir" ] && [ -w "$state_dir" ] && [ -x "$state_dir" ] + if [ $? -ne 0 ]; then + ocf_log err "Invalid location for 'state': $state_dir is not writable" + return $OCF_ERR_ARGS + fi + fi + + return $OCF_SUCCESS +} + +: ${OCF_RESKEY_CRM_meta_interval:=0} +: ${OCF_RESKEY_CRM_meta_globally_unique:="false"} + +if [ -z "$OCF_RESKEY_state" ]; then + state="${HA_VARRUN%%/}/HealthCPU-${OCF_RESOURCE_INSTANCE}.state" + if [ "${OCF_RESKEY_CRM_meta_globally_unique}" = "false" ]; then + # Strip off the trailing clone marker + OCF_RESKEY_state=$(echo $state | sed s/:[0-9][0-9]*\.state/.state/) + else + OCF_RESKEY_state="$state" + fi +fi + +if [ -z "${OCF_RESKEY_red_limit}" ] ; then + OCF_RESKEY_red_limit=10 +fi + +if [ -z "${OCF_RESKEY_yellow_limit}" ] ; then + OCF_RESKEY_yellow_limit=50 +fi + +case "$__OCF_ACTION" in +meta-data) meta_data + exit $OCF_SUCCESS + ;; +start) healthcpu_start;; +stop) healthcpu_stop;; +monitor) healthcpu_monitor;; +reload-agent) healthcpu_reload_agent;; +validate-all) healthcpu_validate;; +usage|help) healthcpu_usage + exit $OCF_SUCCESS + ;; +*) healthcpu_usage + exit $OCF_ERR_UNIMPLEMENTED + ;; +esac +rc=$? +ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc" +exit $rc + +# vim: set filetype=sh expandtab tabstop=4 softtabstop=4 shiftwidth=4 textwidth=80: |