Add -E parameter to allow to specify expected mode and fix auto-detection on PG>=12
This commit is contained in:
Benjamin Renard
parent
8d172e944c
commit
747331a9ec
GPG key ID:
3E2E1CE1907115BC
2 changed files with 54 additions and 26 deletions
40
README.md
40
README.md
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@ -48,25 +48,27 @@ ln -s /usr/local/src/check_pg_streaming_replication/check_pg_streaming_replicati
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```
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Usage: ./check_pg_streaming_replication [-d] [-h] [options]
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-u pg_user Specify local Postgres user (Default: try to auto-detect or use postgres)
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-b psql_bin Specify psql binary path (Default: /usr/bin/psql)
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-B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: /usr/bin/pg_lsclusters)
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-V pg_version Specify Postgres version (Default: try to auto-detect or use 9.1)
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-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use
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/var/lib/postgresql//main)
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-r recovery_conf Specify Postgres recovery configuration file path
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(Default: [PG_MAIN]/recovery.conf for PG <= 11, [PG_MAIN]/postgresql.auto.conf for PG >= 12)
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-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file)
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-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL
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port if detected or use 5432)
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-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must
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match with .pgpass one is used)
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-C 1/0 Enable or disable check if the current LSN of the master host is the same
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of the last received LSN (Default: 1)
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-w replay_warn_delay Specify the replay warning delay in second (Default: 3)
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-c replay_crit_delay Specify the replay critical delay in second (Default: 5)
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-e expected_sync_state The expected replication state ('sync' or 'async', default: sync)
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-d Debug mode
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-u pg_user Specify local Postgres user (Default: try to auto-detect or use postgres)
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-b psql_bin Specify psql binary path (Default: /usr/bin/psql)
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-B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: /usr/bin/pg_lsclusters)
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-V pg_version Specify Postgres version (Default: try to auto-detect or use 9.1)
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-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use
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/var/lib/postgresql//main)
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-r recovery_conf Specify Postgres recovery configuration file path
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( Default: [PG_MAIN]/recovery.conf on PG <= 11, [PG_MAIN]/postgresql.auto.conf on PG >= 12)
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-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file)
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-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL
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port if detected or use 5432)
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-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must
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match with .pgpass one is used)
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-C 1/0 Enable or disable check if the current LSN of the master host is the same
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of the last received LSN (Default: 1)
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-w replay_warn_delay Specify the replay warning delay in second (Default: 3)
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-c replay_crit_delay Specify the replay critical delay in second (Default: 5)
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-e expected_sync_state The expected replication state ('sync' or 'async', default: sync)
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-E expected_mode The expected mode ('master', 'hot-standby' or 'auto', default: 'auto')
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-d Debug mode
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-h Show this message
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```
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## Copyright
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@ -43,6 +43,7 @@ CHECK_CUR_MASTER_LSN=1
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REPLAY_WARNING_DELAY=3
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REPLAY_CRITICAL_DELAY=5
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EXPECTED_SYNC_STATE=sync
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EXPECTED_MODE=auto
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DEBUG=0
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@ -69,13 +70,14 @@ Usage: $0 [-d] [-h] [options]
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-w replay_warn_delay Specify the replay warning delay in second (Default: $REPLAY_WARNING_DELAY)
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-c replay_crit_delay Specify the replay critical delay in second (Default: $REPLAY_CRITICAL_DELAY)
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-e expected_sync_state The expected replication state ('sync' or 'async', default: $EXPECTED_SYNC_STATE)
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-E expected_mode The expected mode ('master', 'hot-standby' or 'auto', default: '$EXPECTED_MODE')
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-d Debug mode
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-h Show this message
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EOF
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[ -n "$ERROR" ] && exit 1 || exit 0
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}
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while getopts "hu:b:B:V:m:r:U:p:D:C:w:c:e:d" OPTION
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while getopts "hu:b:B:V:m:r:U:p:D:C:w:c:e:E:d" OPTION
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do
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case $OPTION in
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u)
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@ -119,6 +121,11 @@ do
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usage "Invalid expected replication state '$OPTARG'. Possible values: sync or async."
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EXPECTED_SYNC_STATE=$OPTARG
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;;
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E)
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[ "$OPTARG" != "master" -a "$OPTARG" != "hot-standby" -a "$OPTARG" != "auto" ] && \
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usage "Invalid expected mode '$OPTARG'. Possible values: master, hot-standby or auto."
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EXPECTED_MODE=$OPTARG
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;;
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d)
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DEBUG=1
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;;
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@ -151,6 +158,8 @@ PG_DEFAULT_APP_NAME = $PG_DEFAULT_APP_NAME
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CHECK_CUR_MASTER_LSN = $CHECK_CUR_MASTER_LSN
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REPLAY_WARNING_DELAY = $REPLAY_WARNING_DELAY
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REPLAY_CRITICAL_DELAY = $REPLAY_CRITICAL_DELAY
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EXPECTED_SYNC_STATE = $EXPECTED_SYNC_STATE
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EXPECTED_MODE = $EXPECTED_MODE
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"
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# Auto-detect PostgreSQL information using pg_lsclusters
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@ -192,6 +201,8 @@ id "$PG_USER" > /dev/null 2>&1
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if [ -z "$RECOVERY_CONF" ]; then
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[ $PG_VERSION -le 11 ] && RECOVERY_CONF_FILENAME="recovery.conf" || RECOVERY_CONF_FILENAME="postgresql.auto.conf"
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RECOVERY_CONF="$PG_MAIN/$RECOVERY_CONF_FILENAME"
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else
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RECOVERY_CONF_FILENAME=$( basename "$RECOVERY_CONF" )
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fi
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# Check PG_DEFAULT_PORT
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@ -262,10 +273,23 @@ debug "Postgres is running"
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RECOVERY_MODE=0
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[ "$( psql_get 'SELECT pg_is_in_recovery();' )" == "t" ] && RECOVERY_MODE=1
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if [ -f $RECOVERY_CONF ]
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then
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debug "File recovery.conf found. Hot-standby mode."
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if [ "$EXPECTED_MODE" == "auto" ]; then
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debug "Auto-detect mode"
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if [[ $RECOVERY_MODE -eq 1 ]]; then
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debug "Postgres is in recovery mode. Hot-standby mode."
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EXPECTED_MODE="hot-standby"
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elif [ -f $RECOVERY_CONF -a $( grep -cE '^\s*primary_conninfo' $RECOVERY_CONF ) -gt 0 ]; then
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debug "File $RECOVERY_CONF_FILENAME found and contain primary_conninfo. Hot-standby mode."
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EXPECTED_MODE="hot-standby"
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else
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debug "Postgres not in recovery mode and file $RECOVERY_CONF_FILENAME not found " \
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"(or does not contain primary_conninfo). Master mode."
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EXPECTED_MODE="master"
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fi
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fi
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if [ "$EXPECTED_MODE" == "hot-standby" ]
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then
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# Check recovery mode
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if [ $RECOVERY_MODE -ne 1 ]
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then
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@ -429,9 +453,8 @@ then
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echo "Last sent/writed LSN: '$M_CUR_SENT_LSN' / '$M_CUR_WRITED_LSN'"
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[ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ] && echo "Replay delay: ${REPLAY_DELAY}s"
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exit 0
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else
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debug "File recovery.conf not found. Master mode."
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elif [ "$EXPECTED_MODE" == "master" ]
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then
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# Check recovery mode
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if [ $RECOVERY_MODE -eq 1 ]
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then
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@ -496,4 +519,7 @@ else
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echo "Current master LSN: $CURRENT_LSN"
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echo -e "$STANDBY_CLIENTS_TXT"
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exit $EXIT_CODE
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else
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echo "UNKNOWN - Invalid mode '$EXPECTED_MODE'"
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exit 3
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fi
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