/etc/pgpool-II/failover.sh
</para>
<programlisting>
- #!/bin/bash
- # This script is run by failover_command.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- # Special values:
- # %d = failed node id
- # %h = failed node hostname
- # %p = failed node port number
- # %D = failed node database cluster path
- # %m = new master node id
- # %H = new master node hostname
- # %M = old master node id
- # %P = old primary node id
- # %r = new master port number
- # %R = new master database cluster path
- # %N = old primary node hostname
- # %S = old primary node port number
- # %% = '%' character
-
- FAILED_NODE_ID="$1"
- FAILED_NODE_HOST="$2"
- FAILED_NODE_PORT="$3"
- FAILED_NODE_PGDATA="$4"
- NEW_MASTER_NODE_ID="$5"
- NEW_MASTER_NODE_HOST="$6"
- OLD_MASTER_NODE_ID="$7"
- OLD_PRIMARY_NODE_ID="$8"
- NEW_MASTER_NODE_PORT="$9"
- NEW_MASTER_NODE_PGDATA="${10}"
- OLD_PRIMARY_NODE_HOST="${11}"
- OLD_PRIMARY_NODE_PORT="${12}"
-
- PGHOME=/usr/pgsql-11
-
-
- logger -i -p local1.info failover.sh: start: failed_node_id=$FAILED_NODE_ID old_primary_node_id=$OLD_PRIMARY_NODE_ID failed_host=$FAILED_NODE_HOST new_master_host=$NEW_MASTER_NODE_HOST
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info failover.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## If Standby node is down, skip failover.
- if [ $FAILED_NODE_ID -ne $OLD_PRIMARY_NODE_ID ]; then
- logger -i -p local1.info failover.sh: Standby node is down. Skipping failover.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$OLD_PRIMARY_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p $OLD_PRIMARY_NODE_PORT -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
- "
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error failover.sh: drop replication slot "${FAILED_NODE_HOST}" failed
- exit 1
- fi
-
- exit 0
- fi
-
- ## Promote Standby node.
- logger -i -p local1.info failover.sh: Primary node is down, promote standby node ${NEW_MASTER_NODE_HOST}.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -D ${NEW_MASTER_NODE_PGDATA} -w promote
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error failover.sh: new_master_host=$NEW_MASTER_NODE_HOST promote failed
- exit 1
- fi
-
- logger -i -p local1.info failover.sh: end: new_master_node_id=$NEW_MASTER_NODE_ID started as the primary node
- exit 0
+#!/bin/bash
+# This script is run by failover_command.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+# Special values:
+# %d = failed node id
+# %h = failed node hostname
+# %p = failed node port number
+# %D = failed node database cluster path
+# %m = new master node id
+# %H = new master node hostname
+# %M = old master node id
+# %P = old primary node id
+# %r = new master port number
+# %R = new master database cluster path
+# %N = old primary node hostname
+# %S = old primary node port number
+# %% = '%' character
+
+FAILED_NODE_ID="$1"
+FAILED_NODE_HOST="$2"
+FAILED_NODE_PORT="$3"
+FAILED_NODE_PGDATA="$4"
+NEW_MASTER_NODE_ID="$5"
+NEW_MASTER_NODE_HOST="$6"
+OLD_MASTER_NODE_ID="$7"
+OLD_PRIMARY_NODE_ID="$8"
+NEW_MASTER_NODE_PORT="$9"
+NEW_MASTER_NODE_PGDATA="${10}"
+OLD_PRIMARY_NODE_HOST="${11}"
+OLD_PRIMARY_NODE_PORT="${12}"
+
+PGHOME=/usr/pgsql-11
+
+
+logger -i -p local1.info failover.sh: start: failed_node_id=$FAILED_NODE_ID old_primary_node_id=$OLD_PRIMARY_NODE_ID failed_host=$FAILED_NODE_HOST new_master_host=$NEW_MASTER_NODE_HOST
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info failover.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## If Standby node is down, skip failover.
+if [ $FAILED_NODE_ID -ne $OLD_PRIMARY_NODE_ID ]; then
+ logger -i -p local1.info failover.sh: Standby node is down. Skipping failover.
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$OLD_PRIMARY_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p $OLD_PRIMARY_NODE_PORT -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
+ "
+
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error failover.sh: drop replication slot "${FAILED_NODE_HOST}" failed
+ exit 1
+ fi
+
+ exit 0
+fi
+
+## Promote Standby node.
+logger -i -p local1.info failover.sh: Primary node is down, promote standby node ${NEW_MASTER_NODE_HOST}.
+
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+ postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -D ${NEW_MASTER_NODE_PGDATA} -w promote
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.error failover.sh: new_master_host=$NEW_MASTER_NODE_HOST promote failed
+ exit 1
+fi
+
+logger -i -p local1.info failover.sh: end: new_master_node_id=$NEW_MASTER_NODE_ID started as the primary node
+exit 0
</programlisting>
</listitem>
</itemizedlist>
/etc/pgpool-II/follow_master.sh
</para>
<programlisting>
- #!/bin/bash
- # This script is run after failover_command to synchronize the Standby with the new Primary.
- # First try pg_rewind. If pg_rewind failed, use pg_basebackup.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- # Special values:
- # %d = failed node id
- # %h = failed node hostname
- # %p = failed node port number
- # %D = failed node database cluster path
- # %m = new master node id
- # %H = new master node hostname
- # %M = old master node id
- # %P = old primary node id
- # %r = new master port number
- # %R = new master database cluster path
- # %N = old primary node hostname
- # %S = old primary node port number
- # %% = '%' character
-
- FAILED_NODE_ID="$1"
- FAILED_NODE_HOST="$2"
- FAILED_NODE_PORT="$3"
- FAILED_NODE_PGDATA="$4"
- NEW_MASTER_NODE_ID="$5"
- OLD_MASTER_NODE_ID="$6"
- NEW_MASTER_NODE_HOST="$7"
- OLD_PRIMARY_NODE_ID="$8"
- NEW_MASTER_NODE_PORT="$9"
- NEW_MASTER_NODE_PGDATA="${10}"
-
- PGHOME=/usr/pgsql-11
- ARCHIVEDIR=/var/lib/pgsql/archivedir
- REPLUSER=repl
- PCP_USER=pgpool
- PGPOOL_PATH=/usr/bin
- PCP_PORT=9898
-
- logger -i -p local1.info follow_master.sh: start: Standby node ${FAILED_NODE_ID}
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info follow_master.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## Get PostgreSQL major version
- PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
-
- if [ $PGVERSION -ge 12 ]; then
- RECOVERYCONF=${FAILED_NODE_PGDATA}/myrecovery.conf
- else
- RECOVERYCONF=${FAILED_NODE_PGDATA}/recovery.conf
- fi
-
- ## Check the status of Standby
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -w -D ${FAILED_NODE_PGDATA} status
-
-
- ## If Standby is running, synchronize it with the new Primary.
- if [ $? -eq 0 ]; then
-
- logger -i -p local1.info follow_master.sh: pg_rewind for $FAILED_NODE_ID
-
- # Create replication slot "${FAILED_NODE_HOST}"
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_create_physical_replication_slot('${FAILED_NODE_HOST}');\"
- "
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- ${PGHOME}/bin/pg_ctl -w -m f -D ${FAILED_NODE_PGDATA} stop
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${FAILED_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${FAILED_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
-
- ${PGHOME}/bin/pg_rewind -D ${FAILED_NODE_PGDATA} --source-server=\"user=postgres host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT}\"
-
- "
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error follow_master.sh: end: pg_rewind failed. Try pg_basebackup.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- # Execute pg_basebackup
- rm -rf ${FAILED_NODE_PGDATA}
- rm -rf ${ARCHIVEDIR}/*
- ${PGHOME}/bin/pg_basebackup -h ${NEW_MASTER_NODE_HOST} -U $REPLUSER -p ${NEW_MASTER_NODE_PORT} -D ${FAILED_NODE_PGDATA} -X stream
-
- if [ ${PGVERSION} -ge 12 ]; then
- sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
- -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${FAILED_NODE_PGDATA}/postgresql.conf
- fi
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${FAILED_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${FAILED_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
- "
-
- if [ $? -ne 0 ]; then
- # drop replication slot
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
- "
-
- logger -i -p local1.error follow_master.sh: end: pg_basebackup failed
- exit 1
- fi
- fi
+#!/bin/bash
+# This script is run after failover_command to synchronize the Standby with the new Primary.
+# First try pg_rewind. If pg_rewind failed, use pg_basebackup.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+# Special values:
+# %d = failed node id
+# %h = failed node hostname
+# %p = failed node port number
+# %D = failed node database cluster path
+# %m = new master node id
+# %H = new master node hostname
+# %M = old master node id
+# %P = old primary node id
+# %r = new master port number
+# %R = new master database cluster path
+# %N = old primary node hostname
+# %S = old primary node port number
+# %% = '%' character
+
+FAILED_NODE_ID="$1"
+FAILED_NODE_HOST="$2"
+FAILED_NODE_PORT="$3"
+FAILED_NODE_PGDATA="$4"
+NEW_MASTER_NODE_ID="$5"
+OLD_MASTER_NODE_ID="$6"
+NEW_MASTER_NODE_HOST="$7"
+OLD_PRIMARY_NODE_ID="$8"
+NEW_MASTER_NODE_PORT="$9"
+NEW_MASTER_NODE_PGDATA="${10}"
+
+PGHOME=/usr/pgsql-11
+ARCHIVEDIR=/var/lib/pgsql/archivedir
+REPLUSER=repl
+PCP_USER=pgpool
+PGPOOL_PATH=/usr/bin
+PCP_PORT=9898
+
+logger -i -p local1.info follow_master.sh: start: Standby node ${FAILED_NODE_ID}
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info follow_master.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## Get PostgreSQL major version
+PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
+
+if [ $PGVERSION -ge 12 ]; then
+RECOVERYCONF=${FAILED_NODE_PGDATA}/myrecovery.conf
+else
+RECOVERYCONF=${FAILED_NODE_PGDATA}/recovery.conf
+fi
+
+## Check the status of Standby
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -w -D ${FAILED_NODE_PGDATA} status
+
+
+## If Standby is running, synchronize it with the new Primary.
+if [ $? -eq 0 ]; then
+
+ logger -i -p local1.info follow_master.sh: pg_rewind for $FAILED_NODE_ID
+
+ # Create replication slot "${FAILED_NODE_HOST}"
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_create_physical_replication_slot('${FAILED_NODE_HOST}');\"
+ "
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ ${PGHOME}/bin/pg_ctl -w -m f -D ${FAILED_NODE_PGDATA} stop
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${FAILED_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${FAILED_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+
+ ${PGHOME}/bin/pg_rewind -D ${FAILED_NODE_PGDATA} --source-server=\"user=postgres host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT}\"
+
+ "
+
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error follow_master.sh: end: pg_rewind failed. Try pg_basebackup.
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ # Execute pg_basebackup
+ rm -rf ${FAILED_NODE_PGDATA}
+ rm -rf ${ARCHIVEDIR}/*
+ ${PGHOME}/bin/pg_basebackup -h ${NEW_MASTER_NODE_HOST} -U $REPLUSER -p ${NEW_MASTER_NODE_PORT} -D ${FAILED_NODE_PGDATA} -X stream
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
+ -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${FAILED_NODE_PGDATA}/postgresql.conf
+ fi
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${FAILED_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${FAILED_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+ "
+
+ if [ $? -ne 0 ]; then
+ # drop replication slot
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
+ "
+
+ logger -i -p local1.error follow_master.sh: end: pg_basebackup failed
+ exit 1
+ fi
+ fi
- # start Standby node on ${FAILED_NODE_HOST}
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool $PGHOME/bin/pg_ctl -l /dev/null -w -D ${FAILED_NODE_PGDATA} start
-
- # If start Standby successfully, attach this node
- if [ $? -eq 0 ]; then
-
- # Run pcp_attact_node to attach Standby node to Pgpool-II.
- ${PGPOOL_PATH}/pcp_attach_node -w -h localhost -U $PCP_USER -p ${PCP_PORT} -n ${FAILED_NODE_ID}
+ # start Standby node on ${FAILED_NODE_HOST}
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+ postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool $PGHOME/bin/pg_ctl -l /dev/null -w -D ${FAILED_NODE_PGDATA} start
+
+ # If start Standby successfully, attach this node
+ if [ $? -eq 0 ]; then
+
+ # Run pcp_attact_node to attach Standby node to Pgpool-II.
+ ${PGPOOL_PATH}/pcp_attach_node -w -h localhost -U $PCP_USER -p ${PCP_PORT} -n ${FAILED_NODE_ID}
- if [ $? -ne 0 ]; then
- logger -i -p local1.error follow_master.sh: end: pcp_attach_node failed
- exit 1
- fi
-
- # If start Standby failed, drop replication slot "${FAILED_NODE_HOST}"
- else
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error follow_master.sh: end: pcp_attach_node failed
+ exit 1
+ fi
+
+ # If start Standby failed, drop replication slot "${FAILED_NODE_HOST}"
+ else
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool \
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c "SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')"
- logger -i -p local1.error follow_master.sh: end: follow master command failed
- exit 1
- fi
-
- else
- logger -i -p local1.info follow_master.sh: failed_nod_id=${FAILED_NODE_ID} is not running. skipping follow master command
- exit 0
- fi
-
- logger -i -p local1.info follow_master.sh: end: follow master command complete
- exit 0
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool \
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c "SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')"
+
+ logger -i -p local1.error follow_master.sh: end: follow master command failed
+ exit 1
+ fi
+
+else
+ logger -i -p local1.info follow_master.sh: failed_nod_id=${FAILED_NODE_ID} is not running. skipping follow master command
+ exit 0
+fi
+
+logger -i -p local1.info follow_master.sh: end: follow master command complete
+exit 0
</programlisting>
</listitem>
</itemizedlist>
/var/lib/pgsql/11/data/recovery_1st_stage
</para>
<programlisting>
- #!/bin/bash
- # This script is executed by "recovery_1st_stage" to recovery a Standby node.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- PRIMARY_NODE_PGDATA="$1"
- DEST_NODE_HOST="$2"
- DEST_NODE_PGDATA="$3"
- PRIMARY_NODE_PORT="$4"
- DEST_NODE_ID="$5"
- DEST_NODE_PORT="$6"
-
- PRIMARY_NODE_HOST=$(hostname)
- PGHOME=/usr/pgsql-11
- ARCHIVEDIR=/var/lib/pgsql/archivedir
- REPLUSER=repl
-
- logger -i -p local1.info recovery_1st_stage: start: pg_basebackup for Standby node $DEST_NODE_ID
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info recovery_1st_stage: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## Get PostgreSQL major version
- PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
- if [ $PGVERSION -ge 12 ]; then
- RECOVERYCONF=${DEST_NODE_PGDATA}/myrecovery.conf
- else
- RECOVERYCONF=${DEST_NODE_PGDATA}/recovery.conf
- fi
-
- ## Create replication slot "${DEST_NODE_HOST}"
- ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
- SELECT pg_create_physical_replication_slot('${DEST_NODE_HOST}');
- EOQ
-
- ## Execute pg_basebackup to recovery Standby node
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- rm -rf $DEST_NODE_PGDATA
- rm -rf $ARCHIVEDIR/*
-
- ${PGHOME}/bin/pg_basebackup -h $PRIMARY_NODE_HOST -U $REPLUSER -p $PRIMARY_NODE_PORT -D $DEST_NODE_PGDATA -X stream
-
- if [ ${PGVERSION} -ge 12 ]; then
- sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
- -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${DEST_NODE_PGDATA}/postgresql.conf
- fi
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${PRIMARY_NODE_HOST} port=${PRIMARY_NODE_PORT} user=${REPLUSER} application_name=${DEST_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${PRIMARY_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${DEST_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${DEST_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
-
- sed -i \"s/#*port = .*/port = ${DEST_NODE_PORT}/\" ${DEST_NODE_PGDATA}/postgresql.conf
- "
-
- if [ $? -ne 0 ]; then
-
- ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
- SELECT pg_drop_replication_slot('${DEST_NODE_HOST}');
- EOQ
-
- logger -i -p local1.error recovery_1st_stage: end: pg_basebackup failed. online recovery failed
- exit 1
- fi
-
- logger -i -p local1.info recovery_1st_stage: end: recovery_1st_stage complete
- exit 0
+#!/bin/bash
+# This script is executed by "recovery_1st_stage" to recovery a Standby node.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+PRIMARY_NODE_PGDATA="$1"
+DEST_NODE_HOST="$2"
+DEST_NODE_PGDATA="$3"
+PRIMARY_NODE_PORT="$4"
+DEST_NODE_ID="$5"
+DEST_NODE_PORT="$6"
+
+PRIMARY_NODE_HOST=$(hostname)
+PGHOME=/usr/pgsql-11
+ARCHIVEDIR=/var/lib/pgsql/archivedir
+REPLUSER=repl
+
+logger -i -p local1.info recovery_1st_stage: start: pg_basebackup for Standby node $DEST_NODE_ID
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info recovery_1st_stage: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## Get PostgreSQL major version
+PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
+if [ $PGVERSION -ge 12 ]; then
+ RECOVERYCONF=${DEST_NODE_PGDATA}/myrecovery.conf
+else
+ RECOVERYCONF=${DEST_NODE_PGDATA}/recovery.conf
+fi
+
+## Create replication slot "${DEST_NODE_HOST}"
+${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
+SELECT pg_create_physical_replication_slot('${DEST_NODE_HOST}');
+EOQ
+
+## Execute pg_basebackup to recovery Standby node
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ rm -rf $DEST_NODE_PGDATA
+ rm -rf $ARCHIVEDIR/*
+
+ ${PGHOME}/bin/pg_basebackup -h $PRIMARY_NODE_HOST -U $REPLUSER -p $PRIMARY_NODE_PORT -D $DEST_NODE_PGDATA -X stream
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
+ -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${DEST_NODE_PGDATA}/postgresql.conf
+ fi
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${PRIMARY_NODE_HOST} port=${PRIMARY_NODE_PORT} user=${REPLUSER} application_name=${DEST_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${PRIMARY_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${DEST_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${DEST_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+
+ sed -i \"s/#*port = .*/port = ${DEST_NODE_PORT}/\" ${DEST_NODE_PGDATA}/postgresql.conf
+"
+
+if [ $? -ne 0 ]; then
+
+ ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
+SELECT pg_drop_replication_slot('${DEST_NODE_HOST}');
+EOQ
+
+ logger -i -p local1.error recovery_1st_stage: end: pg_basebackup failed. online recovery failed
+ exit 1
+fi
+
+logger -i -p local1.info recovery_1st_stage: end: recovery_1st_stage complete
+exit 0
</programlisting>
</listitem>
<listitem>
/var/lib/pgsql/11/data/pgpool_remote_start
</para>
<programlisting>
- #!/bin/bash
- # This script is run after recovery_1st_stage to start Standby node.
+#!/bin/bash
+# This script is run after recovery_1st_stage to start Standby node.
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
- PGHOME=/usr/pgsql-11
- DEST_NODE_HOST="$1"
- DEST_NODE_PGDATA="$2"
+PGHOME=/usr/pgsql-11
+DEST_NODE_HOST="$1"
+DEST_NODE_PGDATA="$2"
- logger -i -p local1.info pgpool_remote_start: start: remote start Standby node $DEST_NODE_HOST
+logger -i -p local1.info pgpool_remote_start: start: remote start Standby node $DEST_NODE_HOST
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
- if [ $? -ne 0 ]; then
- logger -i -p local1.info pgpool_remote_start: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info pgpool_remote_start: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
- ## Start Standby node
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
- $PGHOME/bin/pg_ctl -l /dev/null -w -D $DEST_NODE_PGDATA start
- "
+## Start Standby node
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+ $PGHOME/bin/pg_ctl -l /dev/null -w -D $DEST_NODE_PGDATA start
+"
- if [ $? -ne 0 ]; then
- logger -i -p local1.error pgpool_remote_start: $DEST_NODE_HOST PostgreSQL start failed.
- exit 1
- fi
+if [ $? -ne 0 ]; then
+ logger -i -p local1.error pgpool_remote_start: $DEST_NODE_HOST PostgreSQL start failed.
+ exit 1
+fi
- logger -i -p local1.info pgpool_remote_start: end: $DEST_NODE_HOST PostgreSQL started successfully.
- exit 0
+logger -i -p local1.info pgpool_remote_start: end: $DEST_NODE_HOST PostgreSQL started successfully.
+exit 0
</programlisting>
</listitem>
</itemizedlist>
/etc/pgpool-II/failover.sh
</para>
<programlisting>
- #!/bin/bash
- # This script is run by failover_command.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- # Special values:
- # %d = failed node id
- # %h = failed node hostname
- # %p = failed node port number
- # %D = failed node database cluster path
- # %m = new master node id
- # %H = new master node hostname
- # %M = old master node id
- # %P = old primary node id
- # %r = new master port number
- # %R = new master database cluster path
- # %N = old primary node hostname
- # %S = old primary node port number
- # %% = '%' character
-
- FAILED_NODE_ID="$1"
- FAILED_NODE_HOST="$2"
- FAILED_NODE_PORT="$3"
- FAILED_NODE_PGDATA="$4"
- NEW_MASTER_NODE_ID="$5"
- NEW_MASTER_NODE_HOST="$6"
- OLD_MASTER_NODE_ID="$7"
- OLD_PRIMARY_NODE_ID="$8"
- NEW_MASTER_NODE_PORT="$9"
- NEW_MASTER_NODE_PGDATA="${10}"
- OLD_PRIMARY_NODE_HOST="${11}"
- OLD_PRIMARY_NODE_PORT="${12}"
-
- PGHOME=/usr/pgsql-11
-
-
- logger -i -p local1.info failover.sh: start: failed_node_id=$FAILED_NODE_ID old_primary_node_id=$OLD_PRIMARY_NODE_ID failed_host=$FAILED_NODE_HOST new_master_host=$NEW_MASTER_NODE_HOST
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info failover.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## If Standby node is down, skip failover.
- if [ $FAILED_NODE_ID -ne $OLD_PRIMARY_NODE_ID ]; then
- logger -i -p local1.info failover.sh: Standby node is down. Skipping failover.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$OLD_PRIMARY_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p $OLD_PRIMARY_NODE_PORT -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
- "
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error failover.sh: drop replication slot "${FAILED_NODE_HOST}" failed
- exit 1
- fi
-
- exit 0
- fi
-
- ## Promote Standby node.
- logger -i -p local1.info failover.sh: Primary node is down, promote standby node ${NEW_MASTER_NODE_HOST}.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -D ${NEW_MASTER_NODE_PGDATA} -w promote
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error failover.sh: new_master_host=$NEW_MASTER_NODE_HOST promote failed
- exit 1
- fi
-
- logger -i -p local1.info failover.sh: end: new_master_node_id=$NEW_MASTER_NODE_ID started as the primary node
- exit 0
+#!/bin/bash
+# This script is run by failover_command.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+# Special values:
+# %d = failed node id
+# %h = failed node hostname
+# %p = failed node port number
+# %D = failed node database cluster path
+# %m = new master node id
+# %H = new master node hostname
+# %M = old master node id
+# %P = old primary node id
+# %r = new master port number
+# %R = new master database cluster path
+# %N = old primary node hostname
+# %S = old primary node port number
+# %% = '%' character
+
+FAILED_NODE_ID="$1"
+FAILED_NODE_HOST="$2"
+FAILED_NODE_PORT="$3"
+FAILED_NODE_PGDATA="$4"
+NEW_MASTER_NODE_ID="$5"
+NEW_MASTER_NODE_HOST="$6"
+OLD_MASTER_NODE_ID="$7"
+OLD_PRIMARY_NODE_ID="$8"
+NEW_MASTER_NODE_PORT="$9"
+NEW_MASTER_NODE_PGDATA="${10}"
+OLD_PRIMARY_NODE_HOST="${11}"
+OLD_PRIMARY_NODE_PORT="${12}"
+
+PGHOME=/usr/pgsql-11
+
+
+logger -i -p local1.info failover.sh: start: failed_node_id=$FAILED_NODE_ID old_primary_node_id=$OLD_PRIMARY_NODE_ID failed_host=$FAILED_NODE_HOST new_master_host=$NEW_MASTER_NODE_HOST
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info failover.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## If Standby node is down, skip failover.
+if [ $FAILED_NODE_ID -ne $OLD_PRIMARY_NODE_ID ]; then
+ logger -i -p local1.info failover.sh: Standby node is down. Skipping failover.
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$OLD_PRIMARY_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p $OLD_PRIMARY_NODE_PORT -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
+ "
+
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error failover.sh: drop replication slot "${FAILED_NODE_HOST}" failed
+ exit 1
+ fi
+
+ exit 0
+fi
+
+## Promote Standby node.
+logger -i -p local1.info failover.sh: Primary node is down, promote standby node ${NEW_MASTER_NODE_HOST}.
+
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+ postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -D ${NEW_MASTER_NODE_PGDATA} -w promote
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.error failover.sh: new_master_host=$NEW_MASTER_NODE_HOST promote failed
+ exit 1
+fi
+
+logger -i -p local1.info failover.sh: end: new_master_node_id=$NEW_MASTER_NODE_ID started as the primary node
+exit 0
</programlisting>
</listitem>
</itemizedlist>
/etc/pgpool-II/follow_master.sh
</para>
<programlisting>
- #!/bin/bash
- # This script is run after failover_command to synchronize the Standby with the new Primary.
- # First try pg_rewind. If pg_rewind failed, use pg_basebackup.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- # Special values:
- # %d = failed node id
- # %h = failed node hostname
- # %p = failed node port number
- # %D = failed node database cluster path
- # %m = new master node id
- # %H = new master node hostname
- # %M = old master node id
- # %P = old primary node id
- # %r = new master port number
- # %R = new master database cluster path
- # %N = old primary node hostname
- # %S = old primary node port number
- # %% = '%' character
-
- FAILED_NODE_ID="$1"
- FAILED_NODE_HOST="$2"
- FAILED_NODE_PORT="$3"
- FAILED_NODE_PGDATA="$4"
- NEW_MASTER_NODE_ID="$5"
- OLD_MASTER_NODE_ID="$6"
- NEW_MASTER_NODE_HOST="$7"
- OLD_PRIMARY_NODE_ID="$8"
- NEW_MASTER_NODE_PORT="$9"
- NEW_MASTER_NODE_PGDATA="${10}"
-
- PGHOME=/usr/pgsql-11
- ARCHIVEDIR=/var/lib/pgsql/archivedir
- REPLUSER=repl
- PCP_USER=pgpool
- PGPOOL_PATH=/usr/bin
- PCP_PORT=9898
-
- logger -i -p local1.info follow_master.sh: start: Standby node ${FAILED_NODE_ID}
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info follow_master.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## Get PostgreSQL major version
- PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
-
- if [ $PGVERSION -ge 12 ]; then
- RECOVERYCONF=${FAILED_NODE_PGDATA}/myrecovery.conf
- else
- RECOVERYCONF=${FAILED_NODE_PGDATA}/recovery.conf
- fi
-
- ## Check the status of Standby
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -w -D ${FAILED_NODE_PGDATA} status
-
-
- ## If Standby is running, synchronize it with the new Primary.
- if [ $? -eq 0 ]; then
-
- logger -i -p local1.info follow_master.sh: pg_rewind for $FAILED_NODE_ID
-
- # Create replication slot "${FAILED_NODE_HOST}"
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_create_physical_replication_slot('${FAILED_NODE_HOST}');\"
- "
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- ${PGHOME}/bin/pg_ctl -w -m f -D ${FAILED_NODE_PGDATA} stop
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${FAILED_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${FAILED_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
-
- ${PGHOME}/bin/pg_rewind -D ${FAILED_NODE_PGDATA} --source-server=\"user=postgres host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT}\"
-
- "
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.error follow_master.sh: end: pg_rewind failed. Try pg_basebackup.
-
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- # Execute pg_basebackup
- rm -rf ${FAILED_NODE_PGDATA}
- rm -rf ${ARCHIVEDIR}/*
- ${PGHOME}/bin/pg_basebackup -h ${NEW_MASTER_NODE_HOST} -U $REPLUSER -p ${NEW_MASTER_NODE_PORT} -D ${FAILED_NODE_PGDATA} -X stream
-
- if [ ${PGVERSION} -ge 12 ]; then
- sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
- -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${FAILED_NODE_PGDATA}/postgresql.conf
- fi
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${FAILED_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${FAILED_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
- "
-
- if [ $? -ne 0 ]; then
- # drop replication slot
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
- "
-
- logger -i -p local1.error follow_master.sh: end: pg_basebackup failed
- exit 1
- fi
- fi
+#!/bin/bash
+# This script is run after failover_command to synchronize the Standby with the new Primary.
+# First try pg_rewind. If pg_rewind failed, use pg_basebackup.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+# Special values:
+# %d = failed node id
+# %h = failed node hostname
+# %p = failed node port number
+# %D = failed node database cluster path
+# %m = new master node id
+# %H = new master node hostname
+# %M = old master node id
+# %P = old primary node id
+# %r = new master port number
+# %R = new master database cluster path
+# %N = old primary node hostname
+# %S = old primary node port number
+# %% = '%' character
+
+FAILED_NODE_ID="$1"
+FAILED_NODE_HOST="$2"
+FAILED_NODE_PORT="$3"
+FAILED_NODE_PGDATA="$4"
+NEW_MASTER_NODE_ID="$5"
+OLD_MASTER_NODE_ID="$6"
+NEW_MASTER_NODE_HOST="$7"
+OLD_PRIMARY_NODE_ID="$8"
+NEW_MASTER_NODE_PORT="$9"
+NEW_MASTER_NODE_PGDATA="${10}"
+
+PGHOME=/usr/pgsql-11
+ARCHIVEDIR=/var/lib/pgsql/archivedir
+REPLUSER=repl
+PCP_USER=pgpool
+PGPOOL_PATH=/usr/bin
+PCP_PORT=9898
+
+logger -i -p local1.info follow_master.sh: start: Standby node ${FAILED_NODE_ID}
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info follow_master.sh: passwrodless SSH to postgres@${NEW_MASTER_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## Get PostgreSQL major version
+PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
+
+if [ $PGVERSION -ge 12 ]; then
+RECOVERYCONF=${FAILED_NODE_PGDATA}/myrecovery.conf
+else
+RECOVERYCONF=${FAILED_NODE_PGDATA}/recovery.conf
+fi
+
+## Check the status of Standby
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ${PGHOME}/bin/pg_ctl -w -D ${FAILED_NODE_PGDATA} status
+
+
+## If Standby is running, synchronize it with the new Primary.
+if [ $? -eq 0 ]; then
+
+ logger -i -p local1.info follow_master.sh: pg_rewind for $FAILED_NODE_ID
+
+ # Create replication slot "${FAILED_NODE_HOST}"
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_create_physical_replication_slot('${FAILED_NODE_HOST}');\"
+ "
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ ${PGHOME}/bin/pg_ctl -w -m f -D ${FAILED_NODE_PGDATA} stop
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${FAILED_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${FAILED_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+
+ ${PGHOME}/bin/pg_rewind -D ${FAILED_NODE_PGDATA} --source-server=\"user=postgres host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT}\"
+
+ "
+
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error follow_master.sh: end: pg_rewind failed. Try pg_basebackup.
+
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ # Execute pg_basebackup
+ rm -rf ${FAILED_NODE_PGDATA}
+ rm -rf ${ARCHIVEDIR}/*
+ ${PGHOME}/bin/pg_basebackup -h ${NEW_MASTER_NODE_HOST} -U $REPLUSER -p ${NEW_MASTER_NODE_PORT} -D ${FAILED_NODE_PGDATA} -X stream
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
+ -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${FAILED_NODE_PGDATA}/postgresql.conf
+ fi
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${NEW_MASTER_NODE_HOST} port=${NEW_MASTER_NODE_PORT} user=${REPLUSER} application_name=${FAILED_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${NEW_MASTER_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${FAILED_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${FAILED_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+ "
+
+ if [ $? -ne 0 ]; then
+ # drop replication slot
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool "
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c \"SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')\"
+ "
+
+ logger -i -p local1.error follow_master.sh: end: pg_basebackup failed
+ exit 1
+ fi
+ fi
- # start Standby node on ${FAILED_NODE_HOST}
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
- postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool $PGHOME/bin/pg_ctl -l /dev/null -w -D ${FAILED_NODE_PGDATA} start
-
- # If start Standby successfully, attach this node
- if [ $? -eq 0 ]; then
-
- # Run pcp_attact_node to attach Standby node to Pgpool-II.
- ${PGPOOL_PATH}/pcp_attach_node -w -h localhost -U $PCP_USER -p ${PCP_PORT} -n ${FAILED_NODE_ID}
+ # start Standby node on ${FAILED_NODE_HOST}
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+ postgres@${FAILED_NODE_HOST} -i ~/.ssh/id_rsa_pgpool $PGHOME/bin/pg_ctl -l /dev/null -w -D ${FAILED_NODE_PGDATA} start
+
+ # If start Standby successfully, attach this node
+ if [ $? -eq 0 ]; then
+
+ # Run pcp_attact_node to attach Standby node to Pgpool-II.
+ ${PGPOOL_PATH}/pcp_attach_node -w -h localhost -U $PCP_USER -p ${PCP_PORT} -n ${FAILED_NODE_ID}
- if [ $? -ne 0 ]; then
- logger -i -p local1.error follow_master.sh: end: pcp_attach_node failed
- exit 1
- fi
-
- # If start Standby failed, drop replication slot "${FAILED_NODE_HOST}"
- else
+ if [ $? -ne 0 ]; then
+ logger -i -p local1.error follow_master.sh: end: pcp_attach_node failed
+ exit 1
+ fi
+
+ # If start Standby failed, drop replication slot "${FAILED_NODE_HOST}"
+ else
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool \
- ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c "SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')"
-
- logger -i -p local1.error follow_master.sh: end: follow master command failed
- exit 1
- fi
-
- else
- logger -i -p local1.info follow_master.sh: failed_nod_id=${FAILED_NODE_ID} is not running. skipping follow master command
- exit 0
- fi
-
- logger -i -p local1.info follow_master.sh: end: follow master command complete
- exit 0
+ ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${NEW_MASTER_NODE_HOST} -i ~/.ssh/id_rsa_pgpool \
+ ${PGHOME}/bin/psql -p ${NEW_MASTER_NODE_PORT} -c "SELECT pg_drop_replication_slot('${FAILED_NODE_HOST}')"
+
+ logger -i -p local1.error follow_master.sh: end: follow master command failed
+ exit 1
+ fi
+
+else
+ logger -i -p local1.info follow_master.sh: failed_nod_id=${FAILED_NODE_ID} is not running. skipping follow master command
+ exit 0
+fi
+
+logger -i -p local1.info follow_master.sh: end: follow master command complete
+exit 0
</programlisting>
</listitem>
</itemizedlist>
/var/lib/pgsql/11/data/recovery_1st_stage
</para>
<programlisting>
- #!/bin/bash
- # This script is executed by "recovery_1st_stage" to recovery a Standby node.
-
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
-
- PRIMARY_NODE_PGDATA="$1"
- DEST_NODE_HOST="$2"
- DEST_NODE_PGDATA="$3"
- PRIMARY_NODE_PORT="$4"
- DEST_NODE_ID="$5"
- DEST_NODE_PORT="$6"
-
- PRIMARY_NODE_HOST=$(hostname)
- PGHOME=/usr/pgsql-11
- ARCHIVEDIR=/var/lib/pgsql/archivedir
- REPLUSER=repl
-
- logger -i -p local1.info recovery_1st_stage: start: pg_basebackup for Standby node $DEST_NODE_ID
-
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
-
- if [ $? -ne 0 ]; then
- logger -i -p local1.info recovery_1st_stage: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
-
- ## Get PostgreSQL major version
- PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
- if [ $PGVERSION -ge 12 ]; then
- RECOVERYCONF=${DEST_NODE_PGDATA}/myrecovery.conf
- else
- RECOVERYCONF=${DEST_NODE_PGDATA}/recovery.conf
- fi
-
- ## Create replication slot "${DEST_NODE_HOST}"
- ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
- SELECT pg_create_physical_replication_slot('${DEST_NODE_HOST}');
- EOQ
-
- ## Execute pg_basebackup to recovery Standby node
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
-
- set -o errexit
-
- rm -rf $DEST_NODE_PGDATA
- rm -rf $ARCHIVEDIR/*
-
- ${PGHOME}/bin/pg_basebackup -h $PRIMARY_NODE_HOST -U $REPLUSER -p $PRIMARY_NODE_PORT -D $DEST_NODE_PGDATA -X stream
-
- if [ ${PGVERSION} -ge 12 ]; then
- sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
- -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${DEST_NODE_PGDATA}/postgresql.conf
- fi
-
- cat > ${RECOVERYCONF} << EOT
- primary_conninfo = 'host=${PRIMARY_NODE_HOST} port=${PRIMARY_NODE_PORT} user=${REPLUSER} application_name=${DEST_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
- recovery_target_timeline = 'latest'
- restore_command = 'scp ${PRIMARY_NODE_HOST}:${ARCHIVEDIR}/%f %p'
- primary_slot_name = '${DEST_NODE_HOST}'
- EOT
-
- if [ ${PGVERSION} -ge 12 ]; then
- touch ${DEST_NODE_PGDATA}/standby.signal
- else
- echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
- fi
-
- sed -i \"s/#*port = .*/port = ${DEST_NODE_PORT}/\" ${DEST_NODE_PGDATA}/postgresql.conf
- "
-
- if [ $? -ne 0 ]; then
-
- ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
- SELECT pg_drop_replication_slot('${DEST_NODE_HOST}');
- EOQ
-
- logger -i -p local1.error recovery_1st_stage: end: pg_basebackup failed. online recovery failed
- exit 1
- fi
-
- logger -i -p local1.info recovery_1st_stage: end: recovery_1st_stage complete
- exit 0
+#!/bin/bash
+# This script is executed by "recovery_1st_stage" to recovery a Standby node.
+
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
+
+PRIMARY_NODE_PGDATA="$1"
+DEST_NODE_HOST="$2"
+DEST_NODE_PGDATA="$3"
+PRIMARY_NODE_PORT="$4"
+DEST_NODE_ID="$5"
+DEST_NODE_PORT="$6"
+
+PRIMARY_NODE_HOST=$(hostname)
+PGHOME=/usr/pgsql-11
+ARCHIVEDIR=/var/lib/pgsql/archivedir
+REPLUSER=repl
+
+logger -i -p local1.info recovery_1st_stage: start: pg_basebackup for Standby node $DEST_NODE_ID
+
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info recovery_1st_stage: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
+
+## Get PostgreSQL major version
+PGVERSION=`${PGHOME}/bin/initdb -V | awk '{print $3}' | sed 's/\..*//' | sed 's/\([0-9]*\)[a-zA-Z].*/\1/'`
+if [ $PGVERSION -ge 12 ]; then
+ RECOVERYCONF=${DEST_NODE_PGDATA}/myrecovery.conf
+else
+ RECOVERYCONF=${DEST_NODE_PGDATA}/recovery.conf
+fi
+
+## Create replication slot "${DEST_NODE_HOST}"
+${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
+SELECT pg_create_physical_replication_slot('${DEST_NODE_HOST}');
+EOQ
+
+## Execute pg_basebackup to recovery Standby node
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+
+ set -o errexit
+
+ rm -rf $DEST_NODE_PGDATA
+ rm -rf $ARCHIVEDIR/*
+
+ ${PGHOME}/bin/pg_basebackup -h $PRIMARY_NODE_HOST -U $REPLUSER -p $PRIMARY_NODE_PORT -D $DEST_NODE_PGDATA -X stream
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ sed -i -e \"\\\$ainclude_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'\" \
+ -e \"/^include_if_exists = '$(echo ${RECOVERYCONF} | sed -e 's/\//\\\//g')'/d\" ${DEST_NODE_PGDATA}/postgresql.conf
+ fi
+
+ cat > ${RECOVERYCONF} << EOT
+primary_conninfo = 'host=${PRIMARY_NODE_HOST} port=${PRIMARY_NODE_PORT} user=${REPLUSER} application_name=${DEST_NODE_HOST} passfile=''/var/lib/pgsql/.pgpass'''
+recovery_target_timeline = 'latest'
+restore_command = 'scp ${PRIMARY_NODE_HOST}:${ARCHIVEDIR}/%f %p'
+primary_slot_name = '${DEST_NODE_HOST}'
+EOT
+
+ if [ ${PGVERSION} -ge 12 ]; then
+ touch ${DEST_NODE_PGDATA}/standby.signal
+ else
+ echo \"standby_mode = 'on'\" >> ${RECOVERYCONF}
+ fi
+
+ sed -i \"s/#*port = .*/port = ${DEST_NODE_PORT}/\" ${DEST_NODE_PGDATA}/postgresql.conf
+"
+
+if [ $? -ne 0 ]; then
+
+ ${PGHOME}/bin/psql -p ${PRIMARY_NODE_PORT} << EOQ
+SELECT pg_drop_replication_slot('${DEST_NODE_HOST}');
+EOQ
+
+ logger -i -p local1.error recovery_1st_stage: end: pg_basebackup failed. online recovery failed
+ exit 1
+fi
+
+logger -i -p local1.info recovery_1st_stage: end: recovery_1st_stage complete
+exit 0
</programlisting>
</listitem>
<listitem>
/var/lib/pgsql/11/data/pgpool_remote_start
</para>
<programlisting>
- #!/bin/bash
- # This script is run after recovery_1st_stage to start Standby node.
+#!/bin/bash
+# This script is run after recovery_1st_stage to start Standby node.
- set -o xtrace
- exec > >(logger -i -p local1.info) 2>&1
+set -o xtrace
+exec > >(logger -i -p local1.info) 2>&1
- PGHOME=/usr/pgsql-11
- DEST_NODE_HOST="$1"
- DEST_NODE_PGDATA="$2"
+PGHOME=/usr/pgsql-11
+DEST_NODE_HOST="$1"
+DEST_NODE_PGDATA="$2"
- logger -i -p local1.info pgpool_remote_start: start: remote start Standby node $DEST_NODE_HOST
+logger -i -p local1.info pgpool_remote_start: start: remote start Standby node $DEST_NODE_HOST
- ## Test passwrodless SSH
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
+## Test passwrodless SSH
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@${DEST_NODE_HOST} -i ~/.ssh/id_rsa_pgpool ls /tmp > /dev/null
- if [ $? -ne 0 ]; then
- logger -i -p local1.info pgpool_remote_start: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
- exit 1
- fi
+if [ $? -ne 0 ]; then
+ logger -i -p local1.info pgpool_remote_start: passwrodless SSH to postgres@${DEST_NODE_HOST} failed. Please setup passwrodless SSH.
+ exit 1
+fi
- ## Start Standby node
- ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
- $PGHOME/bin/pg_ctl -l /dev/null -w -D $DEST_NODE_PGDATA start
- "
+## Start Standby node
+ssh -T -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null postgres@$DEST_NODE_HOST -i ~/.ssh/id_rsa_pgpool "
+ $PGHOME/bin/pg_ctl -l /dev/null -w -D $DEST_NODE_PGDATA start
+"
- if [ $? -ne 0 ]; then
- logger -i -p local1.error pgpool_remote_start: $DEST_NODE_HOST PostgreSQL start failed.
- exit 1
- fi
+if [ $? -ne 0 ]; then
+ logger -i -p local1.error pgpool_remote_start: $DEST_NODE_HOST PostgreSQL start failed.
+ exit 1
+fi
- logger -i -p local1.info pgpool_remote_start: end: $DEST_NODE_HOST PostgreSQL started successfully.
- exit 0
+logger -i -p local1.info pgpool_remote_start: end: $DEST_NODE_HOST PostgreSQL started successfully.
+exit 0
</programlisting>
</listitem>
</itemizedlist>
projects / pgpool2.git / commitdiff