/
rabbitmq-server-ha.ocf
executable file
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/
rabbitmq-server-ha.ocf
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#!/bin/sh
# 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 ...
#
# Note that the script uses an external file to setup RabbitMQ policies
# so make sure to create it from an example shipped with the package.
#
#######################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
#######################################################################
# Fill in some defaults if no values are specified
PATH=/sbin:/usr/sbin:/bin:/usr/bin
OCF_RESKEY_binary_default="/usr/sbin/rabbitmq-server"
OCF_RESKEY_ctl_default="/usr/sbin/rabbitmqctl"
OCF_RESKEY_debug_default=false
OCF_RESKEY_username_default="rabbitmq"
OCF_RESKEY_groupname_default="rabbitmq"
OCF_RESKEY_admin_user_default="guest"
OCF_RESKEY_admin_password_default="guest"
OCF_RESKEY_definitions_dump_file_default="/etc/rabbitmq/definitions"
OCF_RESKEY_pid_file_default="/var/run/rabbitmq/pid"
OCF_RESKEY_log_dir_default="/var/log/rabbitmq"
OCF_RESKEY_mnesia_base_default="/var/lib/rabbitmq/mnesia"
OCF_RESKEY_host_ip_default="127.0.0.1"
OCF_RESKEY_node_port_default=5672
OCF_RESKEY_erlang_cookie_default=false
OCF_RESKEY_erlang_cookie_file_default="/var/lib/rabbitmq/.erlang.cookie"
OCF_RESKEY_use_fqdn_default=false
OCF_RESKEY_fqdn_prefix_default=""
OCF_RESKEY_max_rabbitmqctl_timeouts_default=3
OCF_RESKEY_policy_file_default="/usr/local/sbin/set_rabbitmq_policy"
: ${HA_LOGTAG="lrmd"}
: ${HA_LOGFACILITY="daemon"}
: ${OCF_RESKEY_binary=${OCF_RESKEY_binary_default}}
: ${OCF_RESKEY_ctl=${OCF_RESKEY_ctl_default}}
: ${OCF_RESKEY_debug=${OCF_RESKEY_debug_default}}
: ${OCF_RESKEY_username=${OCF_RESKEY_username_default}}
: ${OCF_RESKEY_groupname=${OCF_RESKEY_groupname_default}}
: ${OCF_RESKEY_admin_user=${OCF_RESKEY_admin_user_default}}
: ${OCF_RESKEY_admin_password=${OCF_RESKEY_admin_password_default}}
: ${OCF_RESKEY_definitions_dump_file=${OCF_RESKEY_definitions_dump_file_default}}
: ${OCF_RESKEY_log_dir=${OCF_RESKEY_log_dir_default}}
: ${OCF_RESKEY_mnesia_base=${OCF_RESKEY_mnesia_base_default}}
: ${OCF_RESKEY_pid_file=${OCF_RESKEY_pid_file_default}}
: ${OCF_RESKEY_node_port=${OCF_RESKEY_node_port_default}}
: ${OCF_RESKEY_erlang_cookie=${OCF_RESKEY_erlang_cookie_default}}
: ${OCF_RESKEY_erlang_cookie_file=${OCF_RESKEY_erlang_cookie_file_default}}
: ${OCF_RESKEY_use_fqdn=${OCF_RESKEY_use_fqdn_default}}
: ${OCF_RESKEY_fqdn_prefix=${OCF_RESKEY_fqdn_prefix_default}}
: ${OCF_RESKEY_max_rabbitmqctl_timeouts=${OCF_RESKEY_max_rabbitmqctl_timeouts_default}}
: ${OCF_RESKEY_policy_file=${OCF_RESKEY_policy_file_default}}
#######################################################################
OCF_RESKEY_start_time_default=$((OCF_RESKEY_CRM_meta_timeout / 6000 + 2))
: ${OCF_RESKEY_start_time=${OCF_RESKEY_start_time_default}}
OCF_RESKEY_stop_time_default=${OCF_RESKEY_start_time_default}
: ${OCF_RESKEY_stop_time=${OCF_RESKEY_start_time_default}}
OCF_RESKEY_command_timeout_default=""
: ${OCF_RESKEY_command_timeout=${OCF_RESKEY_command_timeout_default}}
TIMEOUT_ARG=$((OCF_RESKEY_CRM_meta_timeout / 6000 + 30))
COMMAND_TIMEOUT="/usr/bin/timeout ${OCF_RESKEY_command_timeout} ${TIMEOUT_ARG}"
#######################################################################
usage() {
cat <<UEND
usage: $0 (start|stop|validate-all|meta-data|status|monitor)
$0 manages an ${OCF_RESKEY_binary} process as an HA resource
The 'start' operation starts the networking service.
The 'stop' operation stops the networking service.
The 'validate-all' operation reports whether the parameters are valid
The 'meta-data' operation reports this RA's meta-data information
The 'status' operation reports whether the networking service is running
The 'monitor' operation reports whether the networking service seems to be working
UEND
}
meta_data() {
# The EXTENDED_OCF_PARAMS parameter below does not exist by default
# and hence converted to an empty string unless overridden. It
# could be used by an extention script to add new parameters. For
# example see https://review.openstack.org/#/c/249180/10
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="${OCF_RESKEY_binary}">
<version>1.0</version>
<longdesc lang="en">
Resource agent for ${OCF_RESKEY_binary}
</longdesc>
<shortdesc lang="en">Resource agent for ${OCF_RESKEY_binary}</shortdesc>
<parameters>
<parameter name="binary" unique="0" required="0">
<longdesc lang="en">
RabbitMQ binary
</longdesc>
<shortdesc lang="en">RabbitMQ binary</shortdesc>
<content type="string" default="${OCF_RESKEY_binary_default}" />
</parameter>
<parameter name="ctl" unique="0" required="0">
<longdesc lang="en">
rabbitctl binary
</longdesc>
<shortdesc lang="en">rabbitctl binary binary</shortdesc>
<content type="string" default="${OCF_RESKEY_ctl_default}" />
</parameter>
<parameter name="pid_file" unique="0" required="0">
<longdesc lang="en">
RabbitMQ PID file
</longdesc>
<shortdesc lang="en">RabbitMQ PID file</shortdesc>
<content type="string" default="${OCF_RESKEY_pid_file_default}" />
</parameter>
<parameter name="log_dir" unique="0" required="0">
<longdesc lang="en">
RabbitMQ log directory
</longdesc>
<shortdesc lang="en">RabbitMQ log directory</shortdesc>
<content type="string" default="${OCF_RESKEY_log_dir_default}" />
</parameter>
<parameter name="username" unique="0" required="0">
<longdesc lang="en">
RabbitMQ user name
</longdesc>
<shortdesc lang="en">RabbitMQ user name</shortdesc>
<content type="string" default="${OCF_RESKEY_username_default}" />
</parameter>
<parameter name="groupname" unique="0" required="0">
<longdesc lang="en">
RabbitMQ group name
</longdesc>
<shortdesc lang="en">RabbitMQ group name</shortdesc>
<content type="string" default="${OCF_RESKEY_groupname_default}" />
</parameter>
<parameter name="admin_user" unique="0" required="0">
<longdesc lang="en">
RabbitMQ default admin user for API
</longdesc>
<shortdesc lang="en">RabbitMQ admin user</shortdesc>
<content type="string" default="${OCF_RESKEY_admin_user_default}" />
</parameter>
<parameter name="admin_password" unique="0" required="0">
<longdesc lang="en">
RabbitMQ default admin user password for API
</longdesc>
<shortdesc lang="en">RabbitMQ admin password</shortdesc>
<content type="string" default="${OCF_RESKEY_admin_password_default}" />
</parameter>
<parameter name="definitions_dump_file" unique="0" required="0">
<longdesc lang="en">
RabbitMQ default definitions dump file
</longdesc>
<shortdesc lang="en">RabbitMQ definitions dump file</shortdesc>
<content type="string" default="${OCF_RESKEY_definitions_dump_file}" />
</parameter>
<parameter name="command_timeout" unique="0" required="0">
<longdesc lang="en">
Timeout command arguments for issued commands termination (value is auto evaluated)
</longdesc>
<shortdesc lang="en">Arguments for timeout wrapping command</shortdesc>
<content type="string" default="${OCF_RESKEY_command_timeout_default}" />
</parameter>
<parameter name="start_time" unique="0" required="0">
<longdesc lang="en">
Timeout for start rabbitmq server
</longdesc>
<shortdesc lang="en">Timeout for start rabbitmq server</shortdesc>
<content type="string" default="${OCF_RESKEY_start_time_default}" />
</parameter>
<parameter name="stop_time" unique="0" required="0">
<longdesc lang="en">
Timeout for stopping rabbitmq server
</longdesc>
<shortdesc lang="en">Timeout for stopping rabbitmq server</shortdesc>
<content type="string" default="${OCF_RESKEY_stop_time_default}" />
</parameter>
<parameter name="debug" unique="0" required="0">
<longdesc lang="en">
The debug flag for agent (${OCF_RESKEY_binary}) instance.
In the /tmp/ directory will be created rmq-* files for log
some operations and ENV values inside OCF-script.
</longdesc>
<shortdesc lang="en">AMQP server (${OCF_RESKEY_binary}) debug flag</shortdesc>
<content type="boolean" default="${OCF_RESKEY_debug_default}" />
</parameter>
<parameter name="mnesia_base" unique="0" required="0">
<longdesc lang="en">
Base directory for storing Mnesia files
</longdesc>
<shortdesc lang="en">Base directory for storing Mnesia files</shortdesc>
<content type="boolean" default="${OCF_RESKEY_mnesia_base_default}" />
</parameter>
<parameter name="host_ip" unique="0" required="0">
<longdesc lang="en">
${OCF_RESKEY_binary} should listen on this IP address
</longdesc>
<shortdesc lang="en">${OCF_RESKEY_binary} should listen on this IP address</shortdesc>
<content type="boolean" default="${OCF_RESKEY_host_ip_default}" />
</parameter>
<parameter name="node_port" unique="0" required="0">
<longdesc lang="en">
${OCF_RESKEY_binary} should listen on this port
</longdesc>
<shortdesc lang="en">${OCF_RESKEY_binary} should listen on this port</shortdesc>
<content type="boolean" default="${OCF_RESKEY_node_port_default}" />
</parameter>
<parameter name="erlang_cookie" unique="0" required="0">
<longdesc lang="en">
Erlang cookie for clustering. If specified, will be updated at the mnesia reset
</longdesc>
<shortdesc lang="en">Erlang cookie</shortdesc>
<content type="boolean" default="${OCF_RESKEY_erlang_cookie_default}" />
</parameter>
<parameter name="erlang_cookie_file" unique="0" required="0">
<longdesc lang="en">
Erlang cookie file path where the cookie will be put, if requested
</longdesc>
<shortdesc lang="en">Erlang cookie file</shortdesc>
<content type="boolean" default="${OCF_RESKEY_erlang_cookie_file_default}" />
</parameter>
<parameter name="use_fqdn" unique="0" required="0">
<longdesc lang="en">
Either to use FQDN or a shortname for the rabbitmq node
</longdesc>
<shortdesc lang="en">Use FQDN</shortdesc>
<content type="boolean" default="${OCF_RESKEY_use_fqdn_default}" />
</parameter>
<parameter name="fqdn_prefix" unique="0" required="0">
<longdesc lang="en">
Optional FQDN prefix for RabbitMQ nodes in cluster.
FQDN prefix can be specified to host multiple RabbitMQ instances on a node or
in case of RabbitMQ running in dedicated network/interface.
</longdesc>
<shortdesc lang="en">FQDN prefix</shortdesc>
<content type="string" default="${OCF_RESKEY_fqdn_prefix_default}" />
</parameter>
<parameter name="max_rabbitmqctl_timeouts" unique="0" required="0">
<longdesc lang="en">
If during monitor call rabbitmqctl times out, the timeout is ignored
unless it is Nth timeout in a row. Here N is the value of the current parameter.
If too many timeouts happen in a raw, the monitor call will return with error.
</longdesc>
<shortdesc lang="en">Fail only if that many rabbitmqctl timeouts in a row occurred</shortdesc>
<content type="string" default="${OCF_RESKEY_max_rabbitmqctl_timeouts_default}" />
</parameter>
<parameter name="policy_file" unique="0" required="0">
<longdesc lang="en">
A path to the shell script to setup RabbitMQ policies
</longdesc>
<shortdesc lang="en">A policy file path</shortdesc>
<content type="string" default="${OCF_RESKEY_policy_file_default}" />
</parameter>
$EXTENDED_OCF_PARAMS
</parameters>
<actions>
<action name="start" timeout="20" />
<action name="stop" timeout="20" />
<action name="status" timeout="20" />
<action name="monitor" depth="0" timeout="30" interval="5" />
<action name="monitor" depth="0" timeout="30" interval="3" role="Master"/>
<action name="monitor" depth="30" timeout="60" interval="103" />
<action name="promote" timeout="30" />
<action name="demote" timeout="30" />
<action name="notify" timeout="20" />
<action name="validate-all" timeout="5" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# Functions invoked by resource manager actions
#TODO(bogdando) move proc_kill, proc_stop to shared OCF functions
# to be shipped with HA cluster packages
###########################################################
# Attempts to kill a process with retries and checks procfs
# to make sure the process is stopped.
#
# Globals:
# LL
# Arguments:
# $1 - pid of the process to try and kill
# $2 - service name used for logging and match-based kill, if the pid is "none"
# $3 - signal to use, defaults to SIGTERM
# $4 - number of retries, defaults to 5
# $5 - time to sleep between retries, defaults to 2
# Returns:
# 0 - if successful
# 1 - if process is still running according to procfs
# 2 - if invalid parameters passed in
###########################################################
proc_kill()
{
local pid="${1}"
local service_name="${2}"
local signal="${3:-SIGTERM}"
local count="${4:-5}"
local process_sleep="${5:-2}"
local LH="${LL} proc_kill():"
local pgrp="$(ps -o pgid= ${pid} 2>/dev/null | tr -d '[[:space:]]')"
if [ "${pid}" -a "${pgrp}" = "1" ] ; then
ocf_log err "${LH} shall not kill by the bad pid 1 (init)!"
return 2
fi
if [ "${pid}" = "none" ]; then
local matched
matched="$(pgrep -fla ${service_name})"
if [ -z "${matched}" ] ; then
ocf_log err "${LH} cannot find any processes matching the ${service_name}!"
return 2
fi
ocf_log debug "${LH} no pid provided, will try the ${service_name}, matched list: ${matched}"
while [ $count -gt 0 ]; do
if [ -z "${matched}" ]; then
break
else
matched="$(pgrep -fla ${service_name})"
ocf_log debug "${LH} Stopping ${service_name} with ${signal}..."
ocf_run pkill -f -"${signal}" "${service_name}"
fi
sleep $process_sleep
count=$(( count-1 ))
done
pgrep -f "${service_name}" > /dev/null
if [ $? -ne 0 ] ; then
ocf_log debug "${LH} Stopped ${service_name} with ${signal}"
return 0
else
ocf_log warn "${LH} Failed to stop ${service_name} with ${signal}"
return 1
fi
else
# pid is not none
while [ $count -gt 0 ]; do
if [ ! -d "/proc/${pid}" ]; then
break
else
ocf_log debug "${LH} Stopping ${service_name} with ${signal}..."
ocf_run pkill -"${signal}" -g "${pgrp}"
fi
sleep $process_sleep
count=$(( count-1 ))
done
# Check if the process ended after the last sleep
if [ ! -d "/proc/${pid}" ] ; then
ocf_log debug "${LH} Stopped ${service_name} with ${signal}"
return 0
fi
ocf_log warn "${LH} Failed to stop ${service_name} with ${signal}"
return 1
fi
}
###########################################################
# Attempts to kill a process with the given pid or pid file
# using proc_kill and will retry with sigkill if sigterm is
# unsuccessful.
#
# Globals:
# OCF_ERR_GENERIC
# OCF_SUCCESS
# LL
# Arguments:
# $1 - pidfile or pid or 'none', if stopping by the name matching
# $2 - service name used for logging or for the failback stopping method
# $3 - stop process timeout (in sec), used to determine how many times we try
# SIGTERM and an upper limit on how long this function should try and
# stop the process. Defaults to 15.
# Returns:
# OCF_SUCCESS - if successful
# OCF_ERR_GENERIC - if process is still running according to procfs
###########################################################
proc_stop()
{
local pid_param="${1}"
local service_name="${2}"
local timeout="${3:-15}"
local LH="${LL} proc_stop():"
local i
local pid
local pidfile
if [ "${pid_param}" = "none" ] ; then
pid="none"
else
# check if provide just a number
echo "${pid_param}" | egrep -q '^[0-9]+$'
if [ $? -eq 0 ]; then
pid="${pid_param}"
elif [ -e "${pid_param}" ]; then # check if passed in a pid file
pidfile="${pid_param}"
pid=$(cat "${pidfile}" 2>/dev/null | tr -s " " "\n" | sort -u)
else
ocf_log warn "${LH} pid param ${pid_param} is not a file or a number, try match by ${service_name}"
pid="none"
fi
fi
# number of times to try a SIGTEM is (timeout - 5 seconds) / 2 seconds
local stop_count=$(( ($timeout-5)/2 ))
# make sure we stop at least once
if [ $stop_count -le 0 ]; then
stop_count=1
fi
if [ -z "${pid}" ] ; then
ocf_log warn "${LH} unable to get PID from ${pidfile}, try match by ${service_name}"
pid="none"
fi
if [ -n "${pid}" ]; then
for i in ${pid} ; do
[ "${i}" ] || break
ocf_log info "${LH} Stopping ${service_name} by PID ${i}"
proc_kill "${i}" "${service_name}" SIGTERM $stop_count
if [ $? -ne 0 ]; then
# SIGTERM failed, send a single SIGKILL
proc_kill "${i}" "${service_name}" SIGKILL 1 2
if [ $? -ne 0 ]; then
ocf_log err "${LH} ERROR: could not stop ${service_name}"
return "${OCF_ERR_GENERIC}"
fi
fi
done
fi
# Remove the pid file here which will remove empty pid files as well
if [ -n "${pidfile}" ]; then
rm -f "${pidfile}"
fi
ocf_log info "${LH} Stopped ${service_name}"
return "${OCF_SUCCESS}"
}
# Invokes the given command as a rabbitmq user and wrapped in the
# timeout command.
su_rabbit_cmd() {
local timeout
if [ "$1" = "-t" ]; then
timeout="/usr/bin/timeout ${OCF_RESKEY_command_timeout} $2"
shift 2
else
timeout=$COMMAND_TIMEOUT
fi
local cmd="${1:-status}"
local LH="${LL} su_rabbit_cmd():"
local rc=1
local user=$OCF_RESKEY_username
local mail=/var/spool/mail/rabbitmq
local pwd=/var/lib/rabbitmq
local home=/var/lib/rabbitmq
ocf_log debug "${LH} invoking a command: ${cmd}"
su $user -s /bin/sh -c "USER=${user} MAIL=${mail} PWD=${pwd} HOME=${home} LOGNAME=${user} \
${timeout} ${cmd}"
rc=$?
ocf_log info "${LH} the invoked command exited ${rc}: ${cmd}"
return $rc
}
now() {
date -u +%s
}
master_score() {
local LH="${LL} master_score():"
local score=$1
if [ -z $score ] ; then
score=0
fi
ocf_log info "${LH} Updating master score attribute with ${score}"
ocf_run crm_master -l reboot -v $score || return $OCF_ERR_GENERIC
return $OCF_SUCCESS
}
# Return either FQDN or shortname, depends on the OCF_RESKEY_use_fqdn.
get_hostname() {
if [ "${OCF_RESKEY_use_fqdn}" = 'false' ] ; then
echo "$(hostname -s)"
else
echo "$(hostname -f)"
fi
}
# Strip the FQDN to the shortname, if OCF_RESKEY_use_fqdn was set;
# Prepend prefix to the hostname
process_fqdn() {
if [ "${OCF_RESKEY_use_fqdn}" = 'false' ] ; then
echo "${OCF_RESKEY_fqdn_prefix}$1" | awk -F. '{print $1}'
else
echo "${OCF_RESKEY_fqdn_prefix}$1"
fi
}
# Return OCF_SUCCESS, if current host is in the list of given hosts.
# Otherwise, return 10
my_host() {
local hostlist="$1"
local hostname
local hn
local rc=10
local LH="${LL} my_host():"
hostname=$(process_fqdn $(get_hostname))
ocf_log info "${LH} hostlist is: $hostlist"
for host in $hostlist ; do
hn=$(process_fqdn "${host}")
ocf_log debug "${LH} comparing '$hostname' with '$hn'"
if [ "${hostname}" = "${hn}" ] ; then
rc=$OCF_SUCCESS
break
fi
done
return $rc
}
srv_uptime() {
local stime
stime=$( crm_attribute -N $THIS_PCMK_NODE -l reboot --name 'rabbit-start-time' --query 2>/dev/null | awk '{print $3}' | awk -F "=" '{print $2}' | sed -e '/(null)/d' )
if [ -z "${stime}" -o "${stime}" = "(null)" ] ; then
echo 0
else
echo $(( $(now) - ${stime} ))
fi
return $OCF_SUCCESS
}
# Return either rabbit node name as FQDN or shortname, depends on the OCF_RESKEY_use_fqdn.
rabbit_node_name() {
echo "rabbit@$(process_fqdn $1)"
}
rmq_setup_env() {
local H
local dir
H="$(get_hostname)"
export RABBITMQ_NODENAME=$(rabbit_node_name $H)
export RABBITMQ_NODE_PORT=$OCF_RESKEY_node_port
export RABBITMQ_PID_FILE=$OCF_RESKEY_pid_file
MNESIA_FILES="${OCF_RESKEY_mnesia_base}/$(rabbit_node_name $H)"
RMQ_START_TIME="${MNESIA_FILES}/ocf_server_start_time.txt"
MASTER_FLAG_FILE="${MNESIA_FILES}/ocf_master_for_${OCF_RESOURCE_INSTANCE}"
THIS_PCMK_NODE=`crm_node -n`
TOTALVMEM=`free -mt | awk '/Total:/ {print $2}'`
# check and make PID file dir
local PID_DIR=$( dirname $OCF_RESKEY_pid_file )
if [ ! -d ${PID_DIR} ] ; then
mkdir -p ${PID_DIR}
chown -R ${OCF_RESKEY_username}:${OCF_RESKEY_groupname} ${PID_DIR}
chmod 755 ${PID_DIR}
fi
# Regardless of whether we just created the directory or it
# already existed, check whether it is writable by the configured
# user
for dir in ${PID_DIR} "${OCF_RESKEY_mnesia_base}" "${OCF_RESKEY_log_dir}"; do
if test -e ${dir}; then
local files
files=$(su -s /bin/sh - $OCF_RESKEY_username -c "find ${dir} ! -writable")
if [ "${files}" ]; then
ocf_log warn "Directory ${dir} is not writable by ${OCF_RESKEY_username}, chowning."
chown -R ${OCF_RESKEY_username}:${OCF_RESKEY_groupname} "${dir}"
fi
fi
done
export LL="${OCF_RESOURCE_INSTANCE}[$$]:"
update_cookie
}
# Return a RabbitMQ node to its virgin state.
# For reset and force_reset to succeed the RabbitMQ application must have been stopped.
# If the app cannot be stopped, beam will be killed and mnesia files will be removed.
reset_mnesia() {
local LH="${LL} reset_mnesia():"
local make_amnesia=false
local rc=$OCF_ERR_GENERIC
# check status of a beam process
get_status
rc=$?
if [ $rc -eq 0 ] ; then
# beam is running
# check status of rabbit app and stop it, if it is running
get_status rabbit
rc=$?
if [ $rc -eq 0 ] ; then
# rabbit app is running, have to stop it
ocf_log info "${LH} Stopping RMQ-app prior to reset the mnesia."
stop_rmq_server_app
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log warn "${LH} RMQ-app can't be stopped."
make_amnesia=true
fi
fi
if ! $make_amnesia ; then
# rabbit app is not running, reset mnesia
ocf_log info "${LH} Execute reset with timeout: ${TIMEOUT_ARG}"
su_rabbit_cmd "${OCF_RESKEY_ctl} reset"
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log info "${LH} Execute force_reset with timeout: ${TIMEOUT_ARG}"
su_rabbit_cmd "${OCF_RESKEY_ctl} force_reset"
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log warn "${LH} Mnesia couldn't cleaned, even by force-reset command."
make_amnesia=true
fi
fi
fi
else
# there is no beam running
make_amnesia=true
ocf_log warn "${LH} There is no Beam process running."
fi
# remove mnesia files, if required
if $make_amnesia ; then
kill_rmq_and_remove_pid
ocf_run rm -rf "${MNESIA_FILES}"
ocf_log warn "${LH} Mnesia files appear corrupted and have been removed from ${MNESIA_FILES}."
fi
# always return OCF SUCCESS
return $OCF_SUCCESS
}
block_client_access()
{
# do not add temporary RMQ blocking rule, if it is already exist
# otherwise, try to add a blocking rule with max of 5 retries
local tries=5
until $(iptables -nvwL | grep -q 'temporary RMQ block') || [ $tries -eq 0 ]; do
tries=$((tries-1))
iptables -I INPUT -p tcp -m tcp --dport ${OCF_RESKEY_node_port} -m state --state NEW,RELATED,ESTABLISHED \
-m comment --comment 'temporary RMQ block' -j REJECT --reject-with tcp-reset
sleep 1
done
if [ $tries -eq 0 ]; then
return $OCF_ERR_GENERIC
else
return $OCF_SUCCESS
fi
}
unblock_client_access()
{
# remove all temporary RMQ blocking rules, if there are more than one exist
for i in $(iptables -nvwL --line-numbers | awk '/temporary RMQ block/ {print $1}'); do
iptables -D INPUT -p tcp -m tcp --dport ${OCF_RESKEY_node_port} -m state --state NEW,RELATED,ESTABLISHED \
-m comment --comment 'temporary RMQ block' -j REJECT --reject-with tcp-reset
done
}
get_nodes__base(){
local infotype=''
local rc=$OCF_ERR_GENERIC
local c_status
if [ "$1" = 'nodes' ]
then
infotype='db_nodes'
elif [ "$1" = 'running' ]
then
infotype='running_db_nodes'
fi
c_status=`${OCF_RESKEY_ctl} eval "mnesia:system_info(${infotype})." 2>/dev/null`
rc=$?
if [ $rc -ne 0 ] ; then
echo ''
return $OCF_ERR_GENERIC
fi
# translate line like '{running_nodes,['rabbit@node-1','rabbit@node-2','rabbit@node-3']},' to node_list
echo $(echo "${c_status}" | awk -F, '{ for (i=1;i<=NF;i++) { if ($i ~ /@/) { gsub(/[\[\]}{]/,"",$i); print $i; } }}' | tr -d "\'")
return $OCF_SUCCESS
}
get_nodes() {
echo $(get_nodes__base nodes)
return $?
}
get_running_nodes() {
echo $(get_nodes__base running)
return $?
}
# Get all known cluster nodes including offline ones
get_all_pacemaker_nodes()
{
echo `crm_node -l | awk '{print $2}' | grep -v "^$" | sed -e '/(null)/d'`
}
# Get alive cluster nodes in visible partition, but the specified one
get_alive_pacemaker_nodes_but()
{
if [ -z "$1" ]; then
echo `crm_node -l -p | sed -e '/(null)/d'`
else
echo `crm_node -l -p | sed -e "s/${1}//g" | sed -e '/(null)/d'`
fi
}
# Get current master. If a parameter is provided,
# do not check node with that name
get_master_name_but()
{
local node
for node in $(get_alive_pacemaker_nodes_but "$@")
do
ocf_log info "${LH} looking if $node is master"
if is_master $node; then
ocf_log info "${LH} master is $node"
echo $node
break
fi
done
}
# Returns 0 if we are clustered with provideded node
is_clustered_with()
{
get_running_nodes | grep -q $(rabbit_node_name $1);
return $?
}
check_need_join_to() {
local join_to
local node
local running_nodes
local rc=$OCF_ERR_GENERIC
rc=0
join_to=$(rabbit_node_name $1)
running_nodes=$(get_running_nodes)
for node in $running_nodes ; do
if [ "${join_to}" = "${node}" ] ; then
rc=1
break
fi
done
return $rc
}
# Update erlang cookie, if it has been specified
update_cookie() {
local cookie_file_content
if [ "${OCF_RESKEY_erlang_cookie}" != 'false' ] ; then
if [ -f "${OCF_RESKEY_erlang_cookie_file}" ]; then
# First line of cookie file without newline
cookie_file_content=$(head -n1 "${OCF_RESKEY_erlang_cookie_file}" | perl -pe chomp)
fi
# As there is a brief period of time when the file is empty
# (shell redirection has already opened and truncated file,
# and echo hasn't finished its job), we are doing this write
# only when cookie has changed.
if [ "${OCF_RESKEY_erlang_cookie}" != "${cookie_file_content}" ]; then
echo "${OCF_RESKEY_erlang_cookie}" > "${OCF_RESKEY_erlang_cookie_file}"
fi
# And this are idempotent operations, so we don't have to
# check any preconditions for running them.
chown ${OCF_RESKEY_username}:${OCF_RESKEY_groupname} "${OCF_RESKEY_erlang_cookie_file}"
chmod 600 "${OCF_RESKEY_erlang_cookie_file}"
fi
return $OCF_SUCCESS
}
# Stop rmq beam process by pid and by rabbit node name match. Returns SUCCESS/ERROR
kill_rmq_and_remove_pid() {
local LH="${LL} kill_rmq_and_remove_pid():"
# Stop the rabbitmq-server by its pidfile, use the name matching as a fallback,
# and ignore the exit code
proc_stop "${OCF_RESKEY_pid_file}" "beam.*${RABBITMQ_NODENAME}" "${OCF_RESKEY_stop_time}"
# Ensure the beam.smp stopped by the rabbit node name matching as well
proc_stop none "beam.*${RABBITMQ_NODENAME}" "${OCF_RESKEY_stop_time}"
if [ $? -eq 0 ] ; then
return $OCF_SUCCESS
else
return $OCF_ERR_GENERIC
fi
}
trim_var(){
local string="$*"
echo ${string%% }
}
action_validate() {
# todo(sv): validate some incoming parameters
OCF_RESKEY_CRM_meta_notify_post=$(trim_var $OCF_RESKEY_CRM_meta_notify_post)
OCF_RESKEY_CRM_meta_notify_pre=$(trim_var $OCF_RESKEY_CRM_meta_notify_pre)
OCF_RESKEY_CRM_meta_notify_start=$(trim_var $OCF_RESKEY_CRM_meta_notify_start)
OCF_RESKEY_CRM_meta_notify_stop=$(trim_var $OCF_RESKEY_CRM_meta_notify_stop)
OCF_RESKEY_CRM_meta_notify_start_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_start_resource)
OCF_RESKEY_CRM_meta_notify_stop_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_stop_resource)
OCF_RESKEY_CRM_meta_notify_active_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_active_resource)
OCF_RESKEY_CRM_meta_notify_inactive_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_inactive_resource)
OCF_RESKEY_CRM_meta_notify_start_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_start_uname)
OCF_RESKEY_CRM_meta_notify_stop_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_stop_uname)
OCF_RESKEY_CRM_meta_notify_active_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_active_uname)
OCF_RESKEY_CRM_meta_notify_master_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_master_resource)
OCF_RESKEY_CRM_meta_notify_master_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_master_uname)
OCF_RESKEY_CRM_meta_notify_demote_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_demote_resource)
OCF_RESKEY_CRM_meta_notify_demote_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_demote_uname)
OCF_RESKEY_CRM_meta_notify_slave_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_slave_resource)
OCF_RESKEY_CRM_meta_notify_slave_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_slave_uname)
OCF_RESKEY_CRM_meta_notify_promote_resource=$(trim_var $OCF_RESKEY_CRM_meta_notify_promote_resource)
OCF_RESKEY_CRM_meta_notify_promote_uname=$(trim_var $OCF_RESKEY_CRM_meta_notify_promote_uname)
return $OCF_SUCCESS
}
join_to_cluster() {
local node="$1"
local rmq_node
local rc=$OCF_ERR_GENERIC
local LH="${LL} join_to_cluster():"
local nowtime
ocf_log info "${LH} start."
rmq_node=$(rabbit_node_name $node)
ocf_log info "${LH} Joining to cluster by node '${rmq_node}'."
get_status rabbit
rc=$?
if [ $rc -eq $OCF_SUCCESS ] ; then
ocf_log info "${LH} rabbitmq app will be stopped."
stop_rmq_server_app
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log err "${LH} Can't stop rabbitmq app by stop_app command. Stopping."
action_stop
return $OCF_ERR_GENERIC
fi
fi
ocf_log info "${LH} Execute join_cluster with timeout: ${TIMEOUT_ARG}"
su_rabbit_cmd "${OCF_RESKEY_ctl} join_cluster $rmq_node"
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log err "${LH} Can't join to cluster by node '${rmq_node}'. Stopping."
action_stop
return $OCF_ERR_GENERIC
fi
sleep 2
try_to_start_rmq_app
rc=$?
if [ $rc -ne 0 ] ; then
ocf_log err "${LH} Can't start RMQ app after join to cluster. Stopping."
action_stop
return $OCF_ERR_GENERIC
else
nowtime="$(now)"
ocf_log info "${LH} Rabbit app started successfully. Updating start time attribute with ${nowtime}"
ocf_run crm_attribute -N $THIS_PCMK_NODE -l reboot --name 'rabbit-start-time' --update "${nowtime}"
ocf_log info "${LH} Joined to cluster succesfully."
fi
ocf_log info "${LH} end."
return $rc
}
unjoin_nodes_from_cluster() {
# node names of the nodes where the pcs resource is being stopped
local nodelist="$1"
local hostname
local nodename
local rc=$OCF_ERR_GENERIC
local rnode
# nodes in rabbit cluster db
local nodes_in_cluster
local LH="${LL} unjoin_nodes_from_cluster():"
nodes_in_cluster=$(get_nodes)
rc=$?
if [ $rc -ne 0 ] ; then
# no nodes in node list, nothing to do
return $OCF_SUCCESS
fi
# unjoin all cluster nodes which are being stopped (i.e. recieved post-stop notify), except *this* node
# before to unjoin the nodes, make sure they were disconnected from *this* node
for hostname in $nodelist ; do
nodename=$(rabbit_node_name $hostname)
if [ "${nodename}" = "${RABBITMQ_NODENAME}" ] ; then
continue
fi
for rnode in $nodes_in_cluster ; do
if [ "${nodename}" = "${rnode}" ] ; then
# disconnect node being unjoined from this node
ocf_run ${OCF_RESKEY_ctl} eval "disconnect_node(list_to_atom(\"${nodename}\"))." 2>&1
rc=$?
if [ $rc -eq $OCF_SUCCESS ] ; then
ocf_log info "${LH} node '${nodename}' disconnected succesfully."
else
ocf_log info "${LH} disconnecting node '${nodename}' failed."
fi
# unjoin node
# when the rabbit node went down, its status
# remains 'running' for a while, so few retries are required
local tries=0
until [ $tries -eq 5 ]; do
tries=$((tries+1))
if is_clustered_with $nodename; then
ocf_log info "${LH} the ${nodename} is alive and cannot be kicked from the cluster yet"
else
break
fi
sleep 10
done
ocf_log info "${LH} Execute forget_cluster_node with timeout: ${TIMEOUT_ARG}"
su_rabbit_cmd "${OCF_RESKEY_ctl} forget_cluster_node ${nodename}"
rc=$?
if [ $rc -eq 0 ] ; then
ocf_log info "${LH} node '${nodename}' unjoined succesfully."
else
ocf_log warn "${LH} unjoining node '${nodename}' failed."
fi
fi
done
done
return $OCF_SUCCESS
}
# Stop RMQ beam server process. Returns SUCCESS/ERROR
stop_server_process() {
local pid
local rc=$OCF_ERR_GENERIC
local LH="${LL} stop_server_process():"
pid=$(cat ${OCF_RESKEY_pid_file})
rc=$?
if [ $rc -ne 0 ] ; then
# Try to stop without known PID
ocf_log err "${LH} RMQ-server process PIDFILE was not found!"
su_rabbit_cmd "${OCF_RESKEY_ctl} stop 2>&1 >> \"${OCF_RESKEY_log_dir}/shutdown_log\""
if [ $? -eq 0 ] ; then