bn8/check_pg_streaming_replication
1
0
Fork 0
Code Issues Pull requests Projects Releases 2 Wiki Activity Actions

Code cleaning

Browse source
This commit is contained in:
Benjamin Renard 2024-07-16 13:43:26 +02:00
parent 269b92415f
commit bc078f83e8
Signed by: bn8
GPG key ID: 3E2E1CE1907115BC
1 changed files with 121 additions and 65 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

176
check_pg_streaming_replication
View file

@ -48,29 +48,37 @@ EXPECTED_MODE=auto
DEBUG=0 DEBUG=0
function usage () { function usage () {
ERROR="$1" ERROR="$*"
[[ -n "$ERROR" ]] && echo -e "$ERROR\n" [[ -n "$ERROR" ]] && echo -e "$ERROR\n"
cat << EOF cat << EOF
Usage: $0 [-d] [-h] [options] Usage: $0 [-d] [-h] [options]
-u pg_user Specify local Postgres user (Default: try to auto-detect or use $DEFAULT_PG_USER) -u pg_user Specify local Postgres user (Default: try to auto-detect or
use $DEFAULT_PG_USER)
-b psql_bin Specify psql binary path (Default: $PSQL_BIN) -b psql_bin Specify psql binary path (Default: $PSQL_BIN)
-B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: $PG_LSCLUSTER_BIN) -B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: $PG_LSCLUSTER_BIN)
-V pg_version Specify Postgres version (Default: try to auto-detect or use $DEFAULT_PG_VERSION) -V pg_version Specify Postgres version (Default: try to auto-detect or
-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use use $DEFAULT_PG_VERSION)
$DEFAULT_PG_MAIN) -m pg_main Specify Postgres main directory path (Default: try to auto-detect or
use $DEFAULT_PG_MAIN)
-r recovery_conf Specify Postgres recovery configuration file path -r recovery_conf Specify Postgres recovery configuration file path
(Default: [PG_MAIN]/recovery.conf on PG <= 11, [PG_MAIN]/postgresql.auto.conf on PG >= 12) (Default: [PG_MAIN]/recovery.conf on PG <= 11,
-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file) [PG_MAIN]/postgresql.auto.conf on PG >= 12)
-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL -U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf
port if detected or use $DEFAULT_PG_PORT) file)
-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must -p pg_port Specify default Postgres master TCP port (Default: same as local
match with .pgpass one is used) PostgreSQL port if detected or use $DEFAULT_PG_PORT)
-C 1/0 Enable or disable check if the current LSN of the master host is the same -D dbname Specify DB name on Postgres master/slave to connect on (Default:
of the last received LSN (Default: $CHECK_CUR_MASTER_LSN) PG_USER, must match with .pgpass one is used)
-w replay_warn_delay Specify the replay warning delay in second (Default: $REPLAY_WARNING_DELAY) -C 1/0 Enable or disable check if the current LSN of the master host is the
-c replay_crit_delay Specify the replay critical delay in second (Default: $REPLAY_CRITICAL_DELAY) same of the last received LSN (Default: $CHECK_CUR_MASTER_LSN)
-e expected_sync_state The expected replication state ('sync' or 'async', default: $EXPECTED_SYNC_STATE) -w replay_warn_delay Specify the replay warning delay in second
-E expected_mode The expected mode ('master', 'hot-standby' or 'auto', default: '$EXPECTED_MODE') (Default: $REPLAY_WARNING_DELAY)
-c replay_crit_delay Specify the replay critical delay in second
(Default: $REPLAY_CRITICAL_DELAY)
-e expected_sync_state The expected replication state ('sync' or 'async',
default: $EXPECTED_SYNC_STATE)
-E expected_mode The expected mode ('master', 'hot-standby' or 'auto',
default: '$EXPECTED_MODE')
-d Debug mode -d Debug mode
-h Show this message -h Show this message
EOF EOF
@ -117,12 +125,15 @@ while getopts "hu:b:B:V:m:r:U:p:D:C:w:c:e:E:d" OPTION; do
;; ;;
e) e)
[[ "$OPTARG" != "sync" ]] && [[ "$OPTARG" != "async" ]] && \ [[ "$OPTARG" != "sync" ]] && [[ "$OPTARG" != "async" ]] && \
usage "Invalid expected replication state '$OPTARG'. Possible values: sync or async." usage "Invalid expected replication state '$OPTARG'." \
"Possible values: sync or async."
EXPECTED_SYNC_STATE=$OPTARG EXPECTED_SYNC_STATE=$OPTARG
;; ;;
E) E)
[[ "$OPTARG" != "master" ]] && [[ "$OPTARG" != "hot-standby" ]] && [[ "$OPTARG" != "auto" ]] && \ [[ "$OPTARG" != "master" ]] && [[ "$OPTARG" != "hot-standby" ]] && \
usage "Invalid expected mode '$OPTARG'. Possible values: master, hot-standby or auto." [[ "$OPTARG" != "auto" ]] && \
usage "Invalid expected mode '$OPTARG'. Possible values: master, hot-standby" \
"or auto."
EXPECTED_MODE=$OPTARG EXPECTED_MODE=$OPTARG
;; ;;
d) d)
@ -139,7 +150,7 @@ done
function debug() { function debug() {
if [[ $DEBUG -eq 1 ]]; then if [[ $DEBUG -eq 1 ]]; then
>&2 echo -e "[DEBUG] $1" >&2 echo -e "[DEBUG] $*"
fi fi
} }
@ -162,15 +173,19 @@ EXPECTED_MODE = $EXPECTED_MODE
# Auto-detect PostgreSQL information using pg_lsclusters # Auto-detect PostgreSQL information using pg_lsclusters
if [[ -x "$PG_LSCLUSTER_BIN" ]]; then if [[ -x "$PG_LSCLUSTER_BIN" ]]; then
PG_CLUSTER=$( $PG_LSCLUSTER_BIN -h 2>/dev/null|head -n1 ) PG_CLUSTER=$( $PG_LSCLUSTER_BIN -h 2>/dev/null | head -n1 )
if [[ -n "$PG_CLUSTER" ]]; then if [[ -n "$PG_CLUSTER" ]]; then
debug "pg_lsclusters output:\n\t$PG_CLUSTER" debug "pg_lsclusters output:\n\t$PG_CLUSTER"
# Output example: # Output example:
# 9.6 main 5432 online,recovery postgres /var/lib/postgresql/9.6/main /var/log/postgresql/postgresql-9.6-main.log # 9.6 main 5432 online,recovery postgres /var/lib/postgresql/9.6/main \
[[ -z "$PG_VERSION" ]] && PG_VERSION=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $1}' ) # /var/log/postgresql/postgresql-9.6-main.log
[[ -z "$PG_DEFAULT_PORT" ]] && PG_DEFAULT_PORT=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $3}' ) # 13 main 5432 online,recovery,pacemaker postgres /var/lib/postgresql/13/main \
[[ -z "$PG_USER" ]] && PG_USER=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $5}' ) # /var/log/postgresql/postgresql-13-main.log
[[ -z "$PG_MAIN" ]] && PG_MAIN=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $6}' ) [[ -z "$PG_VERSION" ]] && PG_VERSION=$( awk -F ' +' '{print $1}' <<< "$PG_CLUSTER" )
[[ -z "$PG_DEFAULT_PORT" ]] && \
PG_DEFAULT_PORT=$( awk -F ' +' '{print $3}' <<< "$PG_CLUSTER" )
[[ -z "$PG_USER" ]] && PG_USER=$( awk -F ' +' '{print $5}' <<< "$PG_CLUSTER" )
[[ -z "$PG_MAIN" ]] && PG_MAIN=$( awk -F ' +' '{print $6}' <<< "$PG_CLUSTER" )
fi fi
else else
debug "pg_lsclusters not found ($PG_LSCLUSTER_BIN): parameters auto-detection disabled" debug "pg_lsclusters not found ($PG_LSCLUSTER_BIN): parameters auto-detection disabled"
@ -194,7 +209,11 @@ id "$PG_USER" > /dev/null 2>&1 || { echo "UNKNOWN: Invalid Postgres user ($PG_US
# Check RECOVERY_CONF # Check RECOVERY_CONF
if [[ -z "$RECOVERY_CONF" ]]; then if [[ -z "$RECOVERY_CONF" ]]; then
[[ $PG_VERSION -le 11 ]] && RECOVERY_CONF_FILENAME="recovery.conf" || RECOVERY_CONF_FILENAME="postgresql.auto.conf" if [[ $PG_VERSION -le 11 ]]; then
RECOVERY_CONF_FILENAME="recovery.conf"
else
RECOVERY_CONF_FILENAME="postgresql.auto.conf"
fi
RECOVERY_CONF="$PG_MAIN/$RECOVERY_CONF_FILENAME" RECOVERY_CONF="$PG_MAIN/$RECOVERY_CONF_FILENAME"
else else
RECOVERY_CONF_FILENAME=$( basename "$RECOVERY_CONF" ) RECOVERY_CONF_FILENAME=$( basename "$RECOVERY_CONF" )
@ -208,15 +227,17 @@ fi
[[ -z "$PG_DB" ]] && PG_DB="$PG_USER" [[ -z "$PG_DB" ]] && PG_DB="$PG_USER"
function psql_get () { function psql_get () {
sql="$1" local sql="$*"
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -d \"$PG_DB\" -w -t -P format=unaligned" debug "Exec 'sudo -u $PG_USER $PSQL_BIN -d \"$PG_DB\" -w -t -P format=unaligned <<< \"$sql\""
sudo -u "$PG_USER" "$PSQL_BIN" -d "$PG_DB" -w -t -P format=unaligned <<< "$sql" sudo -u "$PG_USER" "$PSQL_BIN" -d "$PG_DB" -w -t -P format=unaligned <<< "$sql"
} }
function psql_master_get () { function psql_master_get () {
sql="$1" local sql="$*"
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t -P format=unaligned" debug "Exec 'sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t" \
sudo -u "$PG_USER" "$PSQL_BIN" -U "$M_USER" -h "$M_HOST" -w -p "$M_PORT" -d "$PG_DB" -t -P format=unaligned <<< "$sql" "-P format=unaligned <<< \"$sql\""
sudo -u "$PG_USER" "$PSQL_BIN" \
-U "$M_USER" -h "$M_HOST" -w -p "$M_PORT" -d "$PG_DB" -t -P format=unaligned <<< "$sql"
} }
debug "Running options: debug "Running options:
@ -273,7 +294,8 @@ if [[ "$EXPECTED_MODE" == "auto" ]]; then
if [[ $RECOVERY_MODE -eq 1 ]]; then if [[ $RECOVERY_MODE -eq 1 ]]; then
debug "Postgres is in recovery mode. Hot-standby mode." debug "Postgres is in recovery mode. Hot-standby mode."
EXPECTED_MODE="hot-standby" EXPECTED_MODE="hot-standby"
elif [[ -f $RECOVERY_CONF ]] && [[ $( grep -cE '^\s*primary_conninfo' "$RECOVERY_CONF" ) -gt 0 ]]; then elif [[ -f $RECOVERY_CONF ]] && \
[[ $( grep -cE '^\s*primary_conninfo' "$RECOVERY_CONF" ) -gt 0 ]]; then
debug "File $RECOVERY_CONF_FILENAME found and contain primary_conninfo. Hot-standby mode." debug "File $RECOVERY_CONF_FILENAME found and contain primary_conninfo. Hot-standby mode."
EXPECTED_MODE="hot-standby" EXPECTED_MODE="hot-standby"
else else
@ -301,19 +323,24 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
# Get master connection information from primary_conninfo configuration parameter # Get master connection information from primary_conninfo configuration parameter
MASTER_CONN_INFOS=$( psql_get "SHOW primary_conninfo" ) MASTER_CONN_INFOS=$( psql_get "SHOW primary_conninfo" )
if [[ -z "$MASTER_CONN_INFOS" ]]; then if [[ -z "$MASTER_CONN_INFOS" ]]; then
echo "UNKNOWN: Can't retrieve master connection information from primary_conninfo configuration parameter" echo "UNKNOWN: Can't retrieve master connection information from primary_conninfo" \
"configuration parameter"
exit 3 exit 3
fi fi
debug "Master connection information: $MASTER_CONN_INFOS" debug "Master connection information: $MASTER_CONN_INFOS"
M_HOST=$( grep 'host=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*host= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' ) M_HOST=$(
grep 'host=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*host= *\([0-9a-zA-Z.-]\+\) *.*$/\1/'
)
if [[ -z "$M_HOST" ]]; then if [[ -z "$M_HOST" ]]; then
echo "UNKNOWN: Can't retrieve master host from primary_conninfo configuration parameter" echo "UNKNOWN: Can't retrieve master host from primary_conninfo configuration parameter"
exit 3 exit 3
fi fi
debug "Master host: $M_HOST" debug "Master host: $M_HOST"
M_PORT=$( grep 'port=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*port= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' ) M_PORT=$(
grep 'port=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*port= *\([0-9a-zA-Z.-]\+\) *.*$/\1/'
)
if [[ -z "$M_PORT" ]]; then if [[ -z "$M_PORT" ]]; then
debug "Master port not specified, use default: $PG_DEFAULT_PORT" debug "Master port not specified, use default: $PG_DEFAULT_PORT"
M_PORT=$PG_DEFAULT_PORT M_PORT=$PG_DEFAULT_PORT
@ -325,7 +352,9 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
debug "Master user provided by command-line, use it: $PG_MASTER_USER" debug "Master user provided by command-line, use it: $PG_MASTER_USER"
M_USER="$PG_MASTER_USER" M_USER="$PG_MASTER_USER"
else else
M_USER=$( grep 'user=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*user= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' ) M_USER=$(
grep 'user=' <<< "$MASTER_CONN_INFOS" | sed 's/^.*user= *\([0-9a-zA-Z.-]\+\) *.*$/\1/'
)
if [[ -z "$M_USER" ]]; then if [[ -z "$M_USER" ]]; then
debug "Master user not specified, use default: $PG_USER" debug "Master user not specified, use default: $PG_USER"
M_USER=$PG_USER M_USER=$PG_USER
@ -334,7 +363,10 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
fi fi
fi fi
M_APP_NAME=$( grep 'application_name=' <<< "$MASTER_CONN_INFOS" | sed "s/^.*application_name=[ \'\"]*\([^ \'\"]\+\)[ \'\"]*.*$/\1/" ) M_APP_NAME=$(
grep 'application_name=' <<< "$MASTER_CONN_INFOS" |
sed "s/^.*application_name=[ \'\"]*\([^ \'\"]\+\)[ \'\"]*.*$/\1/"
)
if [[ -z "$M_APP_NAME" ]]; then if [[ -z "$M_APP_NAME" ]]; then
if [[ $PG_VERSION -ge 12 ]]; then if [[ $PG_VERSION -ge 12 ]]; then
debug "Master application name not specified, use cluster_name if defined" debug "Master application name not specified, use cluster_name if defined"
@ -355,24 +387,31 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
fi fi
# Get current replication state information from master # Get current replication state information from master
M_CUR_REPL_STATE_INFO="$( psql_master_get "SELECT state, sync_state, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn FROM pg_stat_replication WHERE application_name='$M_APP_NAME';" )" M_CUR_REPL_STATE_INFO="$(
psql_master_get \
"SELECT state, sync_state, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn" \
"FROM pg_stat_replication WHERE application_name='$M_APP_NAME';"
)"
if [[ -z "$M_CUR_REPL_STATE_INFO" ]]; then if [[ -z "$M_CUR_REPL_STATE_INFO" ]]; then
echo "UNKNOWN: Can't retrieve current replication state information from master server" echo "UNKNOWN: Can't retrieve current replication state information from master server"
exit 3 exit 3
fi fi
debug "Master current replication state:\n\tstate|sync_state|sent_lsn|write_lsn\n\t$M_CUR_REPL_STATE_INFO" debug "Master current replication state:\n" \
"\tstate|sync_state|sent_lsn|write_lsn\n\t$M_CUR_REPL_STATE_INFO"
M_CUR_STATE=$( cut -d'|' -f1 <<< "$M_CUR_REPL_STATE_INFO" ) M_CUR_STATE=$( cut -d'|' -f1 <<< "$M_CUR_REPL_STATE_INFO" )
debug "Master current state: $M_CUR_STATE" debug "Master current state: $M_CUR_STATE"
if [[ "$M_CUR_STATE" != "streaming" ]]; then if [[ "$M_CUR_STATE" != "streaming" ]]; then
echo "CRITICAL: this host is not in streaming state according to master host (current state = '$M_CUR_STATE')" echo "CRITICAL: this host is not in streaming state according to master host" \
"(current state = '$M_CUR_STATE')"
exit 2 exit 2
fi fi
M_CUR_SYNC_STATE=$( cut -d'|' -f2 <<< "$M_CUR_REPL_STATE_INFO" ) M_CUR_SYNC_STATE=$( cut -d'|' -f2 <<< "$M_CUR_REPL_STATE_INFO" )
debug "Master current sync state: $M_CUR_SYNC_STATE" debug "Master current sync state: $M_CUR_SYNC_STATE"
if [[ "$M_CUR_SYNC_STATE" != "$EXPECTED_SYNC_STATE" ]]; then if [[ "$M_CUR_SYNC_STATE" != "$EXPECTED_SYNC_STATE" ]]; then
echo "CRITICAL: unexpected replication state '$M_CUR_SYNC_STATE' (expected state = '$EXPECTED_SYNC_STATE')" echo "CRITICAL: unexpected replication state '$M_CUR_SYNC_STATE'" \
"(expected state = '$EXPECTED_SYNC_STATE')"
exit 2 exit 2
fi fi
@ -400,15 +439,22 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
# The last received LSN is the last replayed ? # The last received LSN is the last replayed ?
if [[ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ]]; then if [[ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ]]; then
debug "/!\ The last received LSN is NOT the last replayed LSN ('$M_CUR_LSN' / '$LAST_REPLAYED_LSN')" debug "/!\ The last received LSN is NOT the last replayed LSN" \
REPLAY_DELAY="$( psql_get 'SELECT EXTRACT(EPOCH FROM now() - pg_last_xact_replay_timestamp());' )" "('$M_CUR_LSN' / '$LAST_REPLAYED_LSN')"
REPLAY_DELAY="$(
psql_get 'SELECT EXTRACT(EPOCH FROM now() - pg_last_xact_replay_timestamp());'
)"
debug "Replay delay is $REPLAY_DELAY second(s)" debug "Replay delay is $REPLAY_DELAY second(s)"
if [[ $( bc -l <<< "$REPLAY_DELAY >= $REPLAY_CRITICAL_DELAY" ) -gt 0 ]]; then if [[ $( bc -l <<< "$REPLAY_DELAY >= $REPLAY_CRITICAL_DELAY" ) -gt 0 ]]; then
echo "CRITICAL: last received LSN is not the last replayed ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)" echo "CRITICAL: last received LSN is not the last replayed" \
"('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and" \
"replay delay is $REPLAY_DELAY second(s)"
exit 2 exit 2
fi fi
if [[ $( bc -l <<< "$REPLAY_DELAY >= $REPLAY_WARNING_DELAY" ) -gt 0 ]]; then if [[ $( bc -l <<< "$REPLAY_DELAY >= $REPLAY_WARNING_DELAY" ) -gt 0 ]]; then
echo "WARNING: last received LSN is not the last replay file ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)" echo "WARNING: last received LSN is not the last replay file" \
"('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and" \
"replay delay is $REPLAY_DELAY second(s)"
exit 1 exit 1
fi fi
debug "Replay delay is not worrying" debug "Replay delay is not worrying"
@ -417,7 +463,8 @@ if [[ "$EXPECTED_MODE" == "hot-standby" ]]; then
# The master last sent LSN is the last received (and synced) ? # The master last sent LSN is the last received (and synced) ?
if [[ "$M_CUR_SENT_LSN" != "$LAST_RECEIVED_LSN" ]]; then if [[ "$M_CUR_SENT_LSN" != "$LAST_RECEIVED_LSN" ]]; then
echo "WARNING: master last sent LSN is not already received (and synced to disk) by slave. May be we have some network delay or load on slave" echo "WARNING: master last sent LSN is not already received (and synced to disk) by slave."
echo "May be we have some network delay or load on slave"
echo "Master last sent LSN: $M_CUR_SENT_LSN" echo "Master last sent LSN: $M_CUR_SENT_LSN"
echo "Slave last received (and synced to disk) LSN: $LAST_RECEIVED_LSN" echo "Slave last received (and synced to disk) LSN: $LAST_RECEIVED_LSN"
exit 1 exit 1
@ -445,27 +492,32 @@ elif [[ "$EXPECTED_MODE" == "master" ]]; then
debug "Current LSN: $CURRENT_LSN" debug "Current LSN: $CURRENT_LSN"
# Check standby client # Check standby client
STANDBY_CLIENTS=$( psql_get "SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag STANDBY_CLIENTS=$(
psql_get \
"SELECT
application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag
FROM ( FROM (
SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag SELECT
application_name, client_addr, sent_lsn, write_lsn, state, sync_state,
current_lag
FROM ( FROM (
SELECT application_name, client_addr, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn, state, sync_state, SELECT
application_name, client_addr, $sent_lsn AS sent_lsn,
$write_lsn AS write_lsn, state, sync_state,
$pg_wal_lsn_diff($pg_current_wal_lsn, $write_lsn) AS current_lag $pg_wal_lsn_diff($pg_current_wal_lsn, $write_lsn) AS current_lag
FROM pg_stat_replication FROM pg_stat_replication
) AS s2 ) AS s2
) AS s1" ) ) AS s1"
)
if [[ -z "$STANDBY_CLIENTS" ]]; then if [[ -z "$STANDBY_CLIENTS" ]]; then
echo "WARNING: no stand-by client connected" echo "WARNING: no stand-by client connected"
exit 1 exit 1
fi fi
debug "Stand-by client(s):\n\t${STANDBY_CLIENTS//$'\n'/\\n\\t}" debug "Stand-by client(s):\n\t${STANDBY_CLIENTS//$'\n'/\\n\\t}"
STANDBY_CLIENTS_TXT="" STANDBY_CLIENTS_ROWS=()
STANDBY_CLIENTS_COUNT=0
CURRENT_LSN_IS_LAST_SENT=1 CURRENT_LSN_IS_LAST_SENT=1
for line in $STANDBY_CLIENTS; do for line in $STANDBY_CLIENTS; do
(( STANDBY_CLIENTS_COUNT+=1 ))
NAME=$( cut -d '|' -f 1 <<< "$line" ) NAME=$( cut -d '|' -f 1 <<< "$line" )
IP=$( cut -d '|' -f 2 <<< "$line" ) IP=$( cut -d '|' -f 2 <<< "$line" )
SENT_LSN=$( cut -d '|' -f 3 <<< "$line" ) SENT_LSN=$( cut -d '|' -f 3 <<< "$line" )
@ -473,20 +525,24 @@ elif [[ "$EXPECTED_MODE" == "master" ]]; then
STATE=$( cut -d '|' -f 5 <<< "$line" ) STATE=$( cut -d '|' -f 5 <<< "$line" )
SYNC_STATE=$( cut -d '|' -f 6 <<< "$line" ) SYNC_STATE=$( cut -d '|' -f 6 <<< "$line" )
LAG=$( cut -d '|' -f 7 <<< "$line" ) LAG=$( cut -d '|' -f 7 <<< "$line" )
STANDBY_CLIENTS_TXT="$STANDBY_CLIENTS_TXT\n$NAME ($IP): $STATE/$SYNC_STATE (LSN: sent='$SENT_LSN' / writed='$WRITED_LSN', Lag: ${LAG}b)" STANDBY_CLIENTS_ROW="$NAME ($IP): $STATE/$SYNC_STATE"
STANDBY_CLIENTS_ROW+=" (LSN: sent='$SENT_LSN' / writed='$WRITED_LSN', Lag: ${LAG}b"
STANDBY_CLIENTS_ROWS+=( "$STANDBY_CLIENTS_ROW" )
[[ "$SENT_LSN" != "$CURRENT_LSN" ]] && CURRENT_LSN_IS_LAST_SENT=0 [[ "$SENT_LSN" != "$CURRENT_LSN" ]] && CURRENT_LSN_IS_LAST_SENT=0
done done
if [[ $CURRENT_LSN_IS_LAST_SENT -eq 1 ]]; then if [[ $CURRENT_LSN_IS_LAST_SENT -eq 1 ]]; then
echo "OK: $STANDBY_CLIENTS_COUNT stand-by client(s) connected" echo "OK: ${#STANDBY_CLIENTS_ROWS[@]} stand-by client(s) connected"
EXIT_CODE=0 EXIT_CODE=0
else else
echo "WARNING: current master LSN is not the last sent to stand-by client(s) connected. May be we have some load ?" echo "WARNING: current master LSN is not the last sent to stand-by client(s) connected." \
"May be we have some load ?"
EXIT_CODE=1 EXIT_CODE=1
fi fi
echo "Current master LSN: $CURRENT_LSN" echo "Current master LSN: $CURRENT_LSN"
echo -e "$STANDBY_CLIENTS_TXT" IFS=$'\n'
echo "${STANDBY_CLIENTS_ROWS[*]}"
exit $EXIT_CODE exit $EXIT_CODE
else else
echo "UNKNOWN - Invalid mode '$EXPECTED_MODE'" echo "UNKNOWN - Invalid mode '$EXPECTED_MODE'"