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fuel-plugin-lma-infrastructure-alerting
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fuel-plugin-lma-infrastruct.../deployment_scripts/puppet/modules/lma_infra_alerting/files/ocf-ns_apache

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#!/bin/bash
# Copyright 2016 Mirantis, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# See usage() function below for more details ...
#
# OCF instance parameters:
# OCF_RESKEY_binary
# OCF_RESKEY_config
# OCF_RESKEY_ns
# OCF_RESKEY_status_url
#######################################################################
# Initialization:
: "${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}"
. "${OCF_FUNCTIONS_DIR}/ocf-shellfuncs"
#######################################################################
# Fill in some defaults if no values are specified
SERVICE_NAME="Apache"
OCF_RESKEY_binary_default="/usr/sbin/apache2"
OCF_RESKEY_config_default="/etc/apache2/apache2.conf"
OCF_RESKEY_ns_default=
OCF_RESKEY_status_url_default="http://localhost/status-server"
: ${OCF_RESKEY_binary=${OCF_RESKEY_binary_default}}
: ${OCF_RESKEY_config=${OCF_RESKEY_config_default}}
: ${OCF_RESKEY_ns=${OCF_RESKEY_ns_default}}
: ${OCF_RESKEY_status_url=${OCF_RESKEY_status_url_default}}
RUN_IN_NS="ip netns exec $OCF_RESKEY_ns "
if [ -z "${OCF_RESKEY_ns}" ] ; then
RUN=''
else
RUN="$RUN_IN_NS "
fi
APACHE_PID_FILE="/var/run/apache2/apache2.pid"
#######################################################################
usage() {
cat <<UEND
usage: $0 (start|stop|validate-all|meta-data|status|monitor)
$0 manages the ${SERVICE_NAME} process as an HA resource
The 'start' operation starts the ${SERVICE_NAME}
The 'stop' operation stops the ${SERVICE_NAME}
The 'validate-all' operation reports whether the parameters are valid
The 'meta-data' operation reports this RA's meta-data information
The 'status' operation reports whether the ${SERVICE_NAME} is running
The 'monitor' operation reports whether the ${SERVICE_NAME} is running
UEND
}
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="apache">
<version>1.0</version>
<longdesc lang="en">
Manages the Apache daemon in a network namespace as a Pacemaker Resource.
</longdesc>
<shortdesc lang="en">Manages Apache</shortdesc>
<parameters>
<parameter name="binary" unique="0" required="0">
<longdesc lang="en">
Path of the Apache binary file that will be run.
</longdesc>
<shortdesc lang="en">Apache binary file</shortdesc>
<content type="string" default="${OCF_RESKEY_binary_default}" />
</parameter>
<parameter name="config" unique="0" required="0">
<longdesc lang="en">
Path to the Apache configuration file
</longdesc>
<shortdesc lang="en">Apache configuration</shortdesc>
<content type="string" default="${OCF_RESKEY_config_default}" />
</parameter>
<parameter name="ns" unique="0" required="0">
<longdesc lang="en">
Network namespace in which Apache will be run
</longdesc>
<shortdesc lang="en">Apache namespace</shortdesc>
<content type="string" default="${OCF_RESKEY_ns_default}" />
</parameter>
<parameter name="status_url" unique="0" required="0">
<longdesc lang="en">
The status URL for checking Apache
</longdesc>
<shortdesc lang="en">Apache status URL</shortdesc>
<content type="string" default="${OCF_RESKEY_status_url_default}" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="20" />
<action name="stop" timeout="20" />
<action name="status" timeout="20" />
<action name="monitor" timeout="30" interval="20" />
<action name="validate-all" timeout="5" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# Functions invoked by resource manager actions
service_validate() {
local rc
check_binary "$OCF_RESKEY_binary"
if [[ ! -f $OCF_RESKEY_config ]]; then
ocf_log err "Config $OCF_RESKEY_config doesn't exist"
return "$OCF_ERR_INSTALLED"
fi
if ! ip netns pids "$OCF_RESKEY_ns" > /dev/null 2>&1; then
# The network namespace needs to be created first
ocf_run ip netns add $OCF_RESKEY_ns
rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "Namespace $OCF_RESKEY_ns can't be created (error=$rc)"
return "$OCF_ERR_INSTALLED"
fi
# This is required for Linux kernels >= 3.19. Previously the
# net.ipv4.ip_nonlocal_bind setting was global to all namespaces but
# starting with this version, it is per namespace.
ocf_run ${RUN_IN_NS} /sbin/sysctl -w net.ipv4.ip_nonlocal_bind=1
ocf_run ${RUN_IN_NS} ip link set up dev lo
fi
mkdir -p "$(dirname ${APACHE_PID_FILE})"
true
}
service_status() {
local rc
local pid
if [ ! -f "$APACHE_PID_FILE" ]; then
ocf_log info "Apache is not running"
return "$OCF_NOT_RUNNING"
else
pid=$(cat "$APACHE_PID_FILE")
fi
if [ -n "${pid}" ]; then
ocf_run -warn kill -s 0 "$pid"
rc=$?
if [ $rc -ne 0 ]; then
ocf_log info "Old PID file found, but Apache process isn't running"
return "$OCF_NOT_RUNNING"
fi
else
ocf_log err "PID file ${APACHE_PID_FILE} is empty!"
return "$OCF_ERR_GENERIC"
fi
if [ -n "${OCF_RESKEY_status_url}" ] ; then
if ! $RUN_IN_NS /usr/bin/curl -sL -w "%{http_code}" -XGET "${OCF_RESKEY_status_url}" -o /dev/null | grep -q 200; then
return "$OCF_ERR_GENERIC"
fi
fi
return "$OCF_SUCCESS"
}
service_monitor() {
local rc
service_status
rc=$?
return $rc
}
service_start() {
local rc
service_monitor
rc=$?
if [ $rc -eq "$OCF_SUCCESS" ]; then
ocf_log info "${SERVICE_NAME} is already running"
return "$OCF_SUCCESS"
fi
ocf_run ${RUN} bash -c "/usr/local/bin/configure_arp_filter_for_vip"
ocf_run ${RUN} bash -c ". /etc/apache2/envvars && ${OCF_RESKEY_binary} -k start"
# Spin waiting for the server to come up
while true; do
service_monitor
rc=$?
[ $rc -eq "$OCF_SUCCESS" ] && break
if [ $rc -ne "$OCF_NOT_RUNNING" ]; then
ocf_log err "${SERVICE_NAME} start failed"
exit "$OCF_ERR_GENERIC"
fi
sleep 3
done
ocf_log info "${SERVICE_NAME} started"
return "$OCF_SUCCESS"
}
service_stop() {
local rc
local pid
service_monitor
rc=$?
if [ $rc -eq "$OCF_NOT_RUNNING" ]; then
ocf_log info "${SERVICE_NAME} is already stopped"
return "$OCF_SUCCESS"
fi
# Try SIGTERM
pid=$(cat "$APACHE_PID_FILE")
ocf_run kill -s TERM "$pid"
rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "${SERVICE_NAME} couldn't be stopped"
exit "$OCF_ERR_GENERIC"
fi
# stop waiting
shutdown_timeout=15
if [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then
shutdown_timeout=$(( (OCF_RESKEY_CRM_meta_timeout/1000)-5 ))
fi
count=0
while [ $count -lt $shutdown_timeout ]; do
service_monitor
rc=$?
if [ $rc -eq "$OCF_NOT_RUNNING" ]; then
break
fi
count=$(( count + 1))
sleep 1
ocf_log debug "${SERVICE_NAME} still hasn't stopped yet. Waiting ..."
done
service_monitor
rc=$?
if [ "${rc}" -ne "${OCF_NOT_RUNNING}" ]; then
# SIGTERM didn't help either, try SIGKILL
ocf_log info "${SERVICE_NAME} failed to stop after ${shutdown_timeout}s using SIGTERM. Trying SIGKILL ..."
ocf_run kill -s KILL "${pid}"
fi
ocf_log info "${SERVICE_NAME} stopped"
rm -f "${APACHE_PID_FILE}"
return "${OCF_SUCCESS}"
}
#######################################################################
case "$1" in
meta-data) meta_data
exit "$OCF_SUCCESS";;
usage|help) usage
exit "$OCF_SUCCESS";;
esac
# Anything except meta-data and help must pass validation
service_validate || exit $?
# What kind of method was invoked?
case "$1" in
start) service_start;;
stop) service_stop;;
status) service_status;;
monitor) service_monitor;;
validate-all) ;;
*) usage
exit "$OCF_ERR_UNIMPLEMENTED";;
esac
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