/
pgsql
executable file
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pgsql
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#!/bin/sh
#
# Description: Manages a PostgreSQL Server as an OCF High-Availability
# resource
#
# Authors: Serge Dubrouski (sergeyfd@gmail.com) -- original RA
# Florian Haas (florian@linbit.com) -- makeover
# Takatoshi MATSUO (matsuo.tak@gmail.com) -- support replication
#
# Copyright: 2006-2012 Serge Dubrouski <sergeyfd@gmail.com>
# and other Linux-HA contributors
# License: GNU General Public License (GPL)
#
###############################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
#
# Get PostgreSQL Configuration parameter
#
get_pgsql_param() {
local param_name
param_name=$1
perl_code="if (/^\s*$param_name[\s=]+\s*(.*)$/) {
\$dir=\$1;
\$dir =~ s/\s*\#.*//;
\$dir =~ s/^'(\S*)'/\$1/;
print \$dir;}"
perl -ne "$perl_code" < $OCF_RESKEY_config
}
# Defaults
OCF_RESKEY_pgctl_default=/usr/bin/pg_ctl
OCF_RESKEY_psql_default=/usr/bin/psql
OCF_RESKEY_pgdata_default=/var/lib/pgsql/data
OCF_RESKEY_pgdba_default=postgres
OCF_RESKEY_pghost_default=""
OCF_RESKEY_pgport_default=5432
OCF_RESKEY_start_opt_default=""
OCF_RESKEY_pgdb_default=template1
OCF_RESKEY_logfile_default=/dev/null
OCF_RESKEY_stop_escalate_default=30
OCF_RESKEY_monitor_user_default=""
OCF_RESKEY_monitor_password_default=""
OCF_RESKEY_monitor_sql_default="select now();"
OCF_RESKEY_check_wal_receiver_default="false"
# Defaults for replication
OCF_RESKEY_rep_mode_default=none
OCF_RESKEY_node_list_default=""
OCF_RESKEY_restore_command_default=""
OCF_RESKEY_archive_cleanup_command_default=""
OCF_RESKEY_recovery_end_command_default=""
OCF_RESKEY_master_ip_default=""
OCF_RESKEY_repuser_default="postgres"
OCF_RESKEY_primary_conninfo_opt_default=""
OCF_RESKEY_restart_on_promote_default="false"
OCF_RESKEY_tmpdir_default="/var/lib/pgsql/tmp"
OCF_RESKEY_xlog_check_count_default="3"
OCF_RESKEY_crm_attr_timeout_default="5"
OCF_RESKEY_stop_escalate_in_slave_default=30
: ${OCF_RESKEY_pgctl=${OCF_RESKEY_pgctl_default}}
: ${OCF_RESKEY_psql=${OCF_RESKEY_psql_default}}
: ${OCF_RESKEY_pgdata=${OCF_RESKEY_pgdata_default}}
: ${OCF_RESKEY_pgdba=${OCF_RESKEY_pgdba_default}}
: ${OCF_RESKEY_pghost=${OCF_RESKEY_pghost_default}}
: ${OCF_RESKEY_pgport=${OCF_RESKEY_pgport_default}}
: ${OCF_RESKEY_config=${OCF_RESKEY_pgdata}/postgresql.conf}
: ${OCF_RESKEY_start_opt=${OCF_RESKEY_start_opt_default}}
: ${OCF_RESKEY_pgdb=${OCF_RESKEY_pgdb_default}}
: ${OCF_RESKEY_logfile=${OCF_RESKEY_logfile_default}}
: ${OCF_RESKEY_stop_escalate=${OCF_RESKEY_stop_escalate_default}}
: ${OCF_RESKEY_monitor_user=${OCF_RESKEY_monitor_user_default}}
: ${OCF_RESKEY_monitor_password=${OCF_RESKEY_monitor_password_default}}
: ${OCF_RESKEY_monitor_sql=${OCF_RESKEY_monitor_sql_default}}
: ${OCF_RESKEY_check_wal_receiver=${OCF_RESKEY_check_wal_receiver_default}}
# for replication
: ${OCF_RESKEY_rep_mode=${OCF_RESKEY_rep_mode_default}}
: ${OCF_RESKEY_node_list=${OCF_RESKEY_node_list_default}}
: ${OCF_RESKEY_restore_command=${OCF_RESKEY_restore_command_default}}
: ${OCF_RESKEY_archive_cleanup_command=${OCF_RESKEY_archive_cleanup_command_default}}
: ${OCF_RESKEY_recovery_end_command=${OCF_RESKEY_recovery_end_command_default}}
: ${OCF_RESKEY_master_ip=${OCF_RESKEY_master_ip_default}}
: ${OCF_RESKEY_repuser=${OCF_RESKEY_repuser_default}}
: ${OCF_RESKEY_primary_conninfo_opt=${OCF_RESKEY_primary_conninfo_opt_default}}
: ${OCF_RESKEY_restart_on_promote=${OCF_RESKEY_restart_on_promote_default}}
: ${OCF_RESKEY_tmpdir=${OCF_RESKEY_tmpdir_default}}
: ${OCF_RESKEY_xlog_check_count=${OCF_RESKEY_xlog_check_count_default}}
: ${OCF_RESKEY_crm_attr_timeout=${OCF_RESKEY_crm_attr_timeout_default}}
: ${OCF_RESKEY_stop_escalate_in_slave=${OCF_RESKEY_stop_escalate_in_slave_default}}
usage() {
cat <<EOF
usage: $0 start|stop|status|monitor|promote|demote|notify|meta-data|validate-all|methods
$0 manages a PostgreSQL Server as an HA resource.
The 'start' operation starts the PostgreSQL server.
The 'stop' operation stops the PostgreSQL server.
The 'status' operation reports whether the PostgreSQL is up.
The 'monitor' operation reports whether the PostgreSQL is running.
The 'promote' operation promotes the PostgreSQL server.
The 'demote' operation demotes the PostgreSQL server.
The 'validate-all' operation reports whether the parameters are valid.
The 'methods' operation reports on the methods $0 supports.
EOF
return $OCF_ERR_ARGS
}
meta_data() {
cat <<EOF
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="pgsql">
<version>1.0</version>
<longdesc lang="en">
Resource script for PostgreSQL. It manages a PostgreSQL as an HA resource.
</longdesc>
<shortdesc lang="en">Manages a PostgreSQL database instance</shortdesc>
<parameters>
<parameter name="pgctl" unique="0" required="0">
<longdesc lang="en">
Path to pg_ctl command.
</longdesc>
<shortdesc lang="en">pgctl</shortdesc>
<content type="string" default="${OCF_RESKEY_pgctl_default}" />
</parameter>
<parameter name="start_opt" unique="0" required="0">
<longdesc lang="en">
Start options (-o start_opt in pg_ctl). "-i -p 5432" for example.
</longdesc>
<shortdesc lang="en">start_opt</shortdesc>
<content type="string" default="${OCF_RESKEY_start_opt_default}" />
</parameter>
<parameter name="ctl_opt" unique="0" required="0">
<longdesc lang="en">
Additional pg_ctl options (-w, -W etc..).
</longdesc>
<shortdesc lang="en">ctl_opt</shortdesc>
<content type="string" default="${OCF_RESKEY_ctl_opt_default}" />
</parameter>
<parameter name="psql" unique="0" required="0">
<longdesc lang="en">
Path to psql command.
</longdesc>
<shortdesc lang="en">psql</shortdesc>
<content type="string" default="${OCF_RESKEY_psql_default}" />
</parameter>
<parameter name="pgdata" unique="0" required="0">
<longdesc lang="en">
Path to PostgreSQL data directory.
</longdesc>
<shortdesc lang="en">pgdata</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdata_default}" />
</parameter>
<parameter name="pgdba" unique="0" required="0">
<longdesc lang="en">
User that owns PostgreSQL.
</longdesc>
<shortdesc lang="en">pgdba</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdba_default}" />
</parameter>
<parameter name="pghost" unique="0" required="0">
<longdesc lang="en">
Hostname/IP address where PostgreSQL is listening
</longdesc>
<shortdesc lang="en">pghost</shortdesc>
<content type="string" default="${OCF_RESKEY_pghost_default}" />
</parameter>
<parameter name="pgport" unique="0" required="0">
<longdesc lang="en">
Port where PostgreSQL is listening
</longdesc>
<shortdesc lang="en">pgport</shortdesc>
<content type="integer" default="${OCF_RESKEY_pgport_default}" />
</parameter>
<parameter name="monitor_user" unique="0" required="0">
<longdesc lang="en">
PostgreSQL user that pgsql RA will user for monitor operations. If it's not set
pgdba user will be used.
</longdesc>
<shortdesc lang="en">monitor_user</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_user_default}" />
</parameter>
<parameter name="monitor_password" unique="0" required="0">
<longdesc lang="en">
Password for monitor user.
</longdesc>
<shortdesc lang="en">monitor_password</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_password_default}" />
</parameter>
<parameter name="monitor_sql" unique="0" required="0">
<longdesc lang="en">
SQL script that will be used for monitor operations.
</longdesc>
<shortdesc lang="en">monitor_sql</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_sql_default}" />
</parameter>
<parameter name="config" unique="0" required="0">
<longdesc lang="en">
Path to the PostgreSQL configuration file for the instance.
</longdesc>
<shortdesc lang="en">Configuration file</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdata}/postgresql.conf" />
</parameter>
<parameter name="pgdb" unique="0" required="0">
<longdesc lang="en">
Database that will be used for monitoring.
</longdesc>
<shortdesc lang="en">pgdb</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdb_default}" />
</parameter>
<parameter name="logfile" unique="0" required="0">
<longdesc lang="en">
Path to PostgreSQL server log output file.
</longdesc>
<shortdesc lang="en">logfile</shortdesc>
<content type="string" default="${OCF_RESKEY_logfile_default}" />
</parameter>
<parameter name="socketdir" unique="0" required="0">
<longdesc lang="en">
Unix socket directory for PostgreSQL
</longdesc>
<shortdesc lang="en">socketdir</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="stop_escalate" unique="0" required="0">
<longdesc lang="en">
Number of shutdown retries (using -m fast) before resorting to -m immediate
</longdesc>
<shortdesc lang="en">stop escalation</shortdesc>
<content type="integer" default="${OCF_RESKEY_stop_escalate_default}" />
</parameter>
<parameter name="rep_mode" unique="0" required="0">
<longdesc lang="en">
Replication mode may be set to "async" or "sync" or "slave".
They require PostgreSQL 9.1 or later.
Once set, "async" and "sync" require node_list, master_ip, and
restore_command parameters,as well as configuring PostgreSQL
for replication (in postgresql.conf and pg_hba.conf).
"slave" means that RA only makes recovery.conf before starting
to connect to primary which is running somewhere.
It dosen't need master/slave setting.
It requires master_ip restore_command parameters.
</longdesc>
<shortdesc lang="en">rep_mode</shortdesc>
<content type="string" default="${OCF_RESKEY_rep_mode_default}" />
</parameter>
<parameter name="node_list" unique="0" required="0">
<longdesc lang="en">
All node names. Please separate each node name with a space.
This is required for replication.
</longdesc>
<shortdesc lang="en">node list</shortdesc>
<content type="string" default="${OCF_RESKEY_node_list_default}" />
</parameter>
<parameter name="restore_command" unique="0" required="0">
<longdesc lang="en">
restore_command for recovery.conf.
This is required for replication.
</longdesc>
<shortdesc lang="en">restore_command</shortdesc>
<content type="string" default="${OCF_RESKEY_restore_command_default}" />
</parameter>
<parameter name="archive_cleanup_command" unique="0" required="0">
<longdesc lang="en">
archive_cleanup_command for recovery.conf.
This is used for replication and is optional.
</longdesc>
<shortdesc lang="en">archive_cleanup_command</shortdesc>
<content type="string" default="${OCF_RESKEY_archive_cleanup_command_default}" />
</parameter>
<parameter name="recovery_end_command" unique="0" required="0">
<longdesc lang="en">
recovery_end_command for recovery.conf.
This is used for replication and is optional.
</longdesc>
<shortdesc lang="en">recovery_end_command</shortdesc>
<content type="string" default="${OCF_RESKEY_recovery_end_command_default}" />
</parameter>
<parameter name="master_ip" unique="0" required="0">
<longdesc lang="en">
Master's floating IP address to be connected from hot standby.
This parameter is used for "primary_conninfo" in recovery.conf.
This is required for replication.
</longdesc>
<shortdesc lang="en">master ip</shortdesc>
<content type="string" default="${OCF_RESKEY_master_ip_default}" />
</parameter>
<parameter name="repuser" unique="0" required="0">
<longdesc lang="en">
User used to connect to the master server.
This parameter is used for "primary_conninfo" in recovery.conf.
This is required for replication.
</longdesc>
<shortdesc lang="en">repuser</shortdesc>
<content type="string" default="${OCF_RESKEY_repuser_default}" />
</parameter>
<parameter name="primary_conninfo_opt" unique="0" required="0">
<longdesc lang="en">
primary_conninfo options of recovery.conf except host, port, user and application_name.
This is optional for replication.
</longdesc>
<shortdesc lang="en">primary_conninfo_opt</shortdesc>
<content type="string" default="${OCF_RESKEY_primary_conninfo_opt_default}" />
</parameter>
<parameter name="restart_on_promote" unique="0" required="0">
<longdesc lang="en">
If this is true, RA deletes recovery.conf and restarts PostgreSQL
on promote to keep Timeline ID. It probably makes fail-over slower.
It's recommended to set on-fail of promote up as fence.
This is optional for replication.
</longdesc>
<shortdesc lang="en">restart_on_promote</shortdesc>
<content type="boolean" default="${OCF_RESKEY_restart_on_promote_default}" />
</parameter>
<parameter name="tmpdir" unique="0" required="0">
<longdesc lang="en">
Path to temporary directory.
This is optional for replication.
</longdesc>
<shortdesc lang="en">tmpdir</shortdesc>
<content type="string" default="${OCF_RESKEY_tmpdir_default}" />
</parameter>
<parameter name="xlog_check_count" unique="0" required="0">
<longdesc lang="en">
Number of checks of xlog on monitor before promote.
This is optional for replication.
</longdesc>
<shortdesc lang="en">xlog check count</shortdesc>
<content type="integer" default="${OCF_RESKEY_check_count_default}" />
</parameter>
<parameter name="crm_attr_timeout" unique="0" required="0">
<longdesc lang="en">
The timeout of crm_attribute forever update command.
Default value is 5 seconds.
This is optional for replication.
</longdesc>
<shortdesc lang="en">The timeout of crm_attribute forever update command.</shortdesc>
<content type="integer" default="${OCF_RESKEY_crm_attr_timeout_default}" />
</parameter>
<parameter name="stop_escalate_in_slave" unique="0" required="0">
<longdesc lang="en">
Number of shutdown retries (using -m fast) before resorting to -m immediate
in slave state.
This is optional for replication.
</longdesc>
<shortdesc lang="en">stop escalation_in_slave</shortdesc>
<content type="integer" default="${OCF_RESKEY_stop_escalate_in_slave_default}" />
</parameter>
<parameter name="check_wal_receiver" unique="0" required="0">
<longdesc lang="en">
If this is true, RA checks wal_receiver process on monitor
and notifies its status using "(resource name)-receiver-status" attribute.
It's useful for checking whether PostgreSQL (hot standby) connects to primary.
The attribute shows status as "normal" or "ERROR".
</longdesc>
<shortdesc lang="en">check_wal_receiver</shortdesc>
<content type="boolean" default="${OCF_RESKEY_check_wal_receiver_default}" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="120" />
<action name="stop" timeout="120" />
<action name="status" timeout="60" />
<action name="monitor" depth="0" timeout="30" interval="30"/>
<action name="monitor" depth="0" timeout="30" interval="29" role="Master" />
<action name="promote" timeout="120" />
<action name="demote" timeout="120" />
<action name="notify" timeout="90" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="5" />
<action name="methods" timeout="5" />
</actions>
</resource-agent>
EOF
}
#
# Run the given command in the Resource owner environment...
#
runasowner() {
local quietrun=""
local loglevel="-err"
local var
for var in 1 2
do
case "$1" in
"-q")
quietrun="-q"
shift 1;;
"warn"|"err")
loglevel="-$1"
shift 1;;
*)
;;
esac
done
ocf_run $quietrun $loglevel su $OCF_RESKEY_pgdba -c "cd $OCF_RESKEY_pgdata; $*"
}
#
# Shell escape
#
escape_string() {
echo "$*" | sed -e "s/'/'\\\\''/g"
}
#
# methods: What methods/operations do we support?
#
pgsql_methods() {
cat <<EOF
start
stop
status
monitor
promote
demote
notify
methods
meta-data
validate-all
EOF
}
#pgsql_real_start: Starts PostgreSQL
pgsql_real_start() {
local pgctl_options
local postgres_options
local rc
if pgsql_status; then
ocf_log info "PostgreSQL is already running. PID=`cat $PIDFILE`"
if is_replication; then
return $OCF_ERR_GENERIC
else
return $OCF_SUCCESS
fi
fi
# Remove postmaster.pid if it exists
rm -f $PIDFILE
# Remove backup_label if it exists
if [ -f $BACKUPLABEL ] && ! is_replication; then
ocf_log info "Removing $BACKUPLABEL. The previous backup might have failed."
rm -f $BACKUPLABEL
fi
# Check if we need to create a log file
if ! check_log_file $OCF_RESKEY_logfile
then
ocf_log err "PostgreSQL can't write to the log file: $OCF_RESKEY_logfile"
return $OCF_ERR_PERM
fi
# Check socket directory
if [ -n "$OCF_RESKEY_socketdir" ]
then
check_socket_dir
fi
if [ "$OCF_RESKEY_rep_mode" = "slave" ]; then
rm -f $RECOVERY_CONF
make_recovery_conf || return $OCF_ERR_GENERIC
fi
# Set options passed to pg_ctl
pgctl_options="$OCF_RESKEY_ctl_opt -D $OCF_RESKEY_pgdata -l $OCF_RESKEY_logfile"
# Set options passed to the PostgreSQL server process
postgres_options="-c config_file=${OCF_RESKEY_config}"
if [ -n "$OCF_RESKEY_pghost" ]; then
postgres_options="$postgres_options -h $OCF_RESKEY_pghost"
fi
if [ -n "$OCF_RESKEY_start_opt" ]; then
postgres_options="$postgres_options $OCF_RESKEY_start_opt"
fi
# Tack pass-through options onto pg_ctl options
pgctl_options="$pgctl_options -o '$postgres_options'"
# Invoke pg_ctl
runasowner "unset PGUSER; unset PGPASSWORD; $OCF_RESKEY_pgctl $pgctl_options start"
if [ $? -eq 0 ]; then
# Probably started.....
ocf_log info "PostgreSQL start command sent."
else
ocf_log err "Can't start PostgreSQL."
return $OCF_ERR_GENERIC
fi
while :
do
pgsql_real_monitor warn
rc=$?
if [ $rc -eq $OCF_SUCCESS -o $rc -eq $OCF_RUNNING_MASTER ]; then
break;
fi
sleep 1
ocf_log debug "PostgreSQL still hasn't started yet. Waiting..."
done
ocf_log info "PostgreSQL is started."
return $rc
}
pgsql_replication_start() {
local rc
# initializing for replication
change_pgsql_status "$NODENAME" "STOP"
delete_master_baseline
$CRM_MASTER -v $CAN_NOT_PROMOTE
rm -f ${XLOG_NOTE_FILE}.* $REP_MODE_CONF $RECOVERY_CONF
if ! make_recovery_conf || ! delete_xlog_location || ! set_async_mode_all; then
return $OCF_ERR_GENERIC
fi
if [ -f $PGSQL_LOCK ]; then
ocf_log err "My data may be inconsistent. You have to remove $PGSQL_LOCK file to force start."
return $OCF_ERR_GENERIC
fi
# start
pgsql_real_start
if [ $? -ne $OCF_SUCCESS ]; then
return $OCF_ERR_GENERIC
fi
change_pgsql_status "$NODENAME" "HS:alone"
return $OCF_SUCCESS
}
#pgsql_start: pgsql_real_start() wrapper for replication
pgsql_start() {
if ! is_replication; then
pgsql_real_start
return $?
else
pgsql_replication_start
return $?
fi
}
#pgsql_promote: Promote PostgreSQL
pgsql_promote() {
local target
local rc
if ! is_replication; then
ocf_log err "Not in a replication mode."
return $OCF_ERR_CONFIGURED
fi
rm -f ${XLOG_NOTE_FILE}.*
for target in $NODE_LIST; do
[ "$target" = "$NODENAME" ] && continue
change_data_status "$target" "DISCONNECT"
change_master_score "$target" "$CAN_NOT_PROMOTE"
done
ocf_log info "Creating $PGSQL_LOCK."
touch $PGSQL_LOCK
show_master_baseline
if ocf_is_true ${OCF_RESKEY_restart_on_promote}; then
ocf_log info "Restarting PostgreSQL instead of promote."
#stop : this function returns $OCF_SUCCESS only.
pgsql_real_stop slave
rm -f $RECOVERY_CONF
pgsql_real_start
rc=$?
if [ $rc -ne $OCF_RUNNING_MASTER ]; then
ocf_log err "Can't start PostgreSQL as primary on promote."
if [ $rc -ne $OCF_SUCCESS ]; then
change_pgsql_status "$NODENAME" "STOP"
fi
return $OCF_ERR_GENERIC
fi
else
runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata promote"
if [ $? -eq 0 ]; then
ocf_log info "PostgreSQL promote command sent."
else
ocf_log err "Can't promote PostgreSQL."
return $OCF_ERR_GENERIC
fi
while :
do
pgsql_real_monitor warn
rc=$?
if [ $rc -eq $OCF_RUNNING_MASTER ]; then
break;
elif [ $rc -eq $OCF_ERR_GENERIC ]; then
ocf_log err "Can't promote PostgreSQL."
return $rc
fi
sleep 1
ocf_log debug "PostgreSQL still hasn't promoted yet. Waiting..."
done
ocf_log info "PostgreSQL is promoted."
fi
change_data_status "$NODENAME" "LATEST"
$CRM_MASTER -v $PROMOTE_ME
change_pgsql_status "$NODENAME" "PRI"
return $OCF_SUCCESS
}
#pgsql_demote: Demote PostgreSQL
pgsql_demote() {
local rc
if ! is_replication; then
ocf_log err "Not in a replication mode."
return $OCF_ERR_CONFIGURED
fi
$CRM_MASTER -v $CAN_NOT_PROMOTE
delete_master_baseline
if ! pgsql_status; then
ocf_log info "PostgreSQL is already stopped on demote."
else
ocf_log info "Stopping PostgreSQL on demote."
pgsql_real_stop master
rc=$?
if [ "$rc" -ne "$OCF_SUCCESS" ]; then
change_pgsql_status "$NODENAME" "UNKNOWN"
return $rc
fi
fi
change_pgsql_status "$NODENAME" "STOP"
return $OCF_SUCCESS
}
#pgsql_real_stop: Stop PostgreSQL
pgsql_real_stop() {
local rc
local count
local stop_escalate
if ocf_is_true ${OCF_RESKEY_check_wal_receiver}; then
attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -D -q
fi
if ! pgsql_status
then
#Already stopped
return $OCF_SUCCESS
fi
stop_escalate=$OCF_RESKEY_stop_escalate
if [ "$1" = "slave" ]; then
stop_escalate="$OCF_RESKEY_stop_escalate_in_slave"
fi
# Stop PostgreSQL, do not wait for clients to disconnect
if [ $stop_escalate -gt 0 ]; then
runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata stop -m fast"
fi
# stop waiting
count=0
while [ $count -lt $stop_escalate ]
do
if ! pgsql_status
then
#PostgreSQL stopped
break;
fi
count=`expr $count + 1`
sleep 1
done
if pgsql_status
then
#PostgreSQL is still up. Use another shutdown mode.
ocf_log info "PostgreSQL failed to stop after ${OCF_RESKEY_stop_escalate}s using -m fast. Trying -m immediate..."
runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata stop -m immediate"
fi
while :
do
pgsql_real_monitor
rc=$?
if [ $rc -eq $OCF_NOT_RUNNING ]; then
# An unnecessary debug log is prevented.
break;
fi
sleep 1
ocf_log debug "PostgreSQL still hasn't stopped yet. Waiting..."
done
# Remove postmaster.pid if it exists
rm -f $PIDFILE
if [ "$1" = "master" -a "$OCF_RESKEY_CRM_meta_notify_slave_uname" = " " ]; then
ocf_log info "Removing $PGSQL_LOCK."
rm -f $PGSQL_LOCK
fi
return $OCF_SUCCESS
}
pgsql_replication_stop() {
local rc
$CRM_MASTER -v $CAN_NOT_PROMOTE
delete_xlog_location
if ! pgsql_status
then
ocf_log info "PostgreSQL is already stopped."
change_pgsql_status "$NODENAME" "STOP"
return $OCF_SUCCESS
fi
pgsql_real_stop slave
rc=$?
if [ $rc -ne $OCF_SUCCESS ]; then
change_pgsql_status "$NODENAME" "UNKNOWN"
return $rc
fi
change_pgsql_status "$NODENAME" "STOP"
set_async_mode_all
delete_master_baseline
return $OCF_SUCCESS
}
#pgsql_stop: pgsql_real_stop() wrapper for replication
pgsql_stop() {
if ! is_replication; then
pgsql_real_stop
return $?
else
pgsql_replication_stop
return $?
fi
}
#
# pgsql_status: is PostgreSQL up?
#
pgsql_status() {
if [ -f $PIDFILE ]
then
PID=`head -n 1 $PIDFILE`
runasowner "kill -s 0 $PID >/dev/null 2>&1"
return $?
fi
# No PID file
false
}
pgsql_wal_receiver_status() {
local PID
local receiver_parent_pids
PID=`head -n 1 $PIDFILE`
receiver_parent_pids=`ps -ef | tr -s " " | grep "[w]al receiver process" | cut -d " " -f 3`
if echo "$receiver_parent_pids" | grep -q -w "$PID" ; then
attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -v "normal" -q
return 0
fi
attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -v "ERROR" -q
ocf_log warn "wal receiver process is not running"
return 1
}
#
# pgsql_real_monitor
#
pgsql_real_monitor() {
local loglevel
local rc
local output
# Set the log level of the error message
loglevel=${1:-err}
if ! pgsql_status
then
ocf_log info "PostgreSQL is down"
return $OCF_NOT_RUNNING
fi
if ocf_is_true ${OCF_RESKEY_check_wal_receiver}; then
pgsql_wal_receiver_status
fi
if is_replication; then
#Check replication state
output=`su $OCF_RESKEY_pgdba -c "cd $OCF_RESKEY_pgdata; \
$OCF_RESKEY_psql $psql_options -U $OCF_RESKEY_pgdba \
-Atc \"${CHECK_MS_SQL}\""`
rc=$?
if [ $rc -ne 0 ]; then
report_psql_error $rc $loglevel
return $OCF_ERR_GENERIC
fi
case "$output" in
f) ocf_log debug "PostgreSQL is running as a primary."
if [ "$OCF_RESKEY_monitor_sql" = "$OCF_RESKEY_monitor_sql_default" ]; then
return $OCF_RUNNING_MASTER
fi
;;
t) ocf_log debug "PostgreSQL is running as a hot standby."
return $OCF_SUCCESS;;
*) ocf_log err "$CHECK_MS_SQL output is $output"
return $OCF_ERR_GENERIC;;
esac
fi
OCF_RESKEY_monitor_sql=`escape_string "$OCF_RESKEY_monitor_sql"`
runasowner -q $loglevel "$OCF_RESKEY_psql $psql_options \
-c '$OCF_RESKEY_monitor_sql'"
rc=$?
if [ $rc -ne 0 ]; then
report_psql_error $rc $loglevel
return $OCF_ERR_GENERIC
fi
if is_replication; then
return $OCF_RUNNING_MASTER
fi
return $OCF_SUCCESS
}
pgsql_replication_monitor() {
local rc
rc=$1
if [ $rc -ne $OCF_SUCCESS -a $rc -ne "$OCF_RUNNING_MASTER" ]; then
return $rc
fi
# If I am Master
if [ $rc -eq $OCF_RUNNING_MASTER ]; then
change_data_status "$NODENAME" "LATEST"
change_pgsql_status "$NODENAME" "PRI"
control_slave_status || return $OCF_ERR_GENERIC
return $rc
fi
# I can't get master node name from $OCF_RESKEY_CRM_meta_notify_master_uname on monitor,
# so I will get master node name using crm_mon -n
crm_mon -n1 | tr -d "\t" | tr -d " " | grep -q "^${RESOURCE_NAME}[(:].*[):]Master"
if [ $? -ne 0 ] ; then
# If I am Slave and Master is not exist
ocf_log info "Master does not exist."
change_pgsql_status "$NODENAME" "HS:alone"
have_master_right
if [ $? -eq 0 ]; then
rm -f ${XLOG_NOTE_FILE}.*
fi
else
output=`$CRM_ATTR_FOREVER -N "$NODENAME" \
-n "$PGSQL_DATA_STATUS_ATTR" -G -q`
if [ "$output" = "DISCONNECT" ]; then
change_pgsql_status "$NODENAME" "HS:alone"
fi
fi
return $rc
}
#pgsql_monitor: pgsql_real_monitor() wrapper for replication
pgsql_monitor() {
local rc
pgsql_real_monitor
rc=$?
if ! is_replication; then
return $rc
else
pgsql_replication_monitor $rc
return $?
fi
}
# pgsql_post_demote
pgsql_post_demote() {
DEMOTE_NODE=`echo $OCF_RESKEY_CRM_meta_notify_demote_uname | sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'`
ocf_log debug "post-demote called. Demote uname is $DEMOTE_NODE"
if [ "$DEMOTE_NODE" != "$NODENAME" ]; then
if ! echo $OCF_RESKEY_CRM_meta_notify_master_uname | tr '[A-Z]' '[a-z]' | grep $NODENAME; then
show_master_baseline
change_pgsql_status "$NODENAME" "HS:alone"
fi
fi
return $OCF_SUCCESS
}
pgsql_pre_promote() {
local master_baseline
local my_master_baseline
local cmp_location
local number_of_nodes
# If my data is newer than new master's one, I fail my resource.
PROMOTE_NODE=`echo $OCF_RESKEY_CRM_meta_notify_promote_uname | \
sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'`
number_of_nodes=`echo $NODE_LIST | wc -w`
if [ $number_of_nodes -ge 3 -a \
"$OCF_RESKEY_rep_mode" = "sync" -a \
"$PROMOTE_NODE" != "$NODENAME" ]; then
master_baseline=`$CRM_ATTR_REBOOT -N "$PROMOTE_NODE" -n \
"$PGSQL_MASTER_BASELINE" -G -q 2>/dev/null`
if [ $? -eq 0 ]; then
my_master_baseline=`$CRM_ATTR_REBOOT -N "$NODENAME" -n \
"$PGSQL_MASTER_BASELINE" -G -q 2>/dev/null`
# get older location
cmp_location=`printf "$master_baseline\n$my_master_baseline\n" |\
sort | head -1`
if [ "$cmp_location" != "$my_master_baseline" ]; then
ocf_log err "My data is newer than new master's one. New master's location : $master_baseline"
$CRM_FAILCOUNT -r $OCF_RESOURCE_INSTANCE -U $NODENAME -v INFINITY
return $OCF_ERR_GENERIC
fi
fi
fi
return $OCF_SUCCESS
}
pgsql_notify() {
local type="${OCF_RESKEY_CRM_meta_notify_type}"
local op="${OCF_RESKEY_CRM_meta_notify_operation}"
local rc
if ! is_replication; then
return $OCF_SUCCESS
fi
ocf_log debug "notify: ${type} for ${op}"
case $type in
pre)
case $op in
promote)
pgsql_pre_promote
return $?
;;
esac
;;
post)
case $op in
promote)
delete_xlog_location