Improve PostgreSQL installation parameters auto-detection

This commit is contained in:
Benjamin Renard 2020-11-04 15:01:57 +01:00 committed by root
parent b092186b89
commit dc07eccd09

View file

@ -19,22 +19,19 @@
# Source : http://git.zionetrix.net/check_pg_streaming_replication
#
PG_USER=postgres
DEFAULT_PG_USER=postgres
DEFAULT_PG_VERSION=9.1
DEFAULT_PG_MAIN=/var/lib/postgresql/$PG_VERSION/main
DEFAULT_PG_PORT=5432
PG_USER=""
PG_VERSION=""
PG_MAIN=""
PG_MASTER_USER=""
PSQL_BIN=/usr/bin/psql
PG_MAIN=/var/lib/postgresql/9.1/main
if [ -f /etc/debian_version ]
then
AUTO_PG_MAIN=$( ls -1d /var/lib/postgresql/9*/main 2> /dev/null|sort -n|tail -n 1 )
[ -n "$AUTO_PG_MAIN" -a -d "$AUTO_PG_MAIN" ] && PG_MAIN=$AUTO_PG_MAIN
elif [ -f /etc/redhat-release ]
then
AUTO_PG_MAIN=$( ls -1d /var/lib/pgsql/9*/data 2> /dev/null|sort -n|tail -n 1 )
[ -n "$AUTO_PG_MAIN" -a -d "$AUTO_PG_MAIN" ] && PG_MAIN=$AUTO_PG_MAIN
fi
PG_LSCLUSTER_BIN=/usr/bin/pg_lsclusters
RECOVERY_CONF_FILENAME=recovery.conf
RECOVERY_CONF=""
PG_DEFAULT_PORT=5432
PG_DEFAULT_PORT=""
PG_DEFAULT_APP_NAME=$( hostname )
PG_DB=""
CHECK_CUR_MASTER_XLOG=1
@ -46,27 +43,30 @@ DEBUG=0
function usage () {
cat << EOF
Usage : $0 [-d] [-h] [options]
-u pg_user Specify Postgres user (Default : $PG_USER)
-b psql_bin Specify psql binary path (Default : $PSQL_BIN)
-m pg_main Specify Postgres main directory path
(By default, try to auto-detect it, on your system it :
$PG_MAIN)
-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 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)
-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use
$DEFAULT_PG_MAIN)
-r recovery_conf Specify Postgres recovery configuration file path
(Default : [PG_MAIN]/$RECOVERY_CONF_FILENAME)
-U pg_master_user Specify Postgres user to use on master (Default : user from recovery.conf file)
-p pg_port Specify default Postgres master TCP port (Default : $PG_DEFAULT_PORT)
-D dbname Specify DB name on Postgres master/slave to connect on (Default : PG_USER)
(Default: [PG_MAIN]/$RECOVERY_CONF_FILENAME)
-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file)
-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL
port if detected or use $DEFAULT_PG_PORT)
-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must
match with .pgpass one is used)
-C 1/0 Enable or disable check if the current XLOG file of the master host is the same
of the last replay XLOG file (Default : $CHECK_CUR_MASTER_XLOG)
-w replay_warn_delay Specify the replay warning delay in second (Default : $REPLAY_WARNING_DELAY)
-c replay_crit_delay Specify the replay critical delay in second (Default : $REPLAY_CRITICAL_DELAY)
of the last replay XLOG file (Default: $CHECK_CUR_MASTER_XLOG)
-w replay_warn_delay Specify the replay warning delay in second (Default: $REPLAY_WARNING_DELAY)
-c replay_crit_delay Specify the replay critical delay in second (Default: $REPLAY_CRITICAL_DELAY)
-d Debug mode
-h Show this message
EOF
exit 0
}
while getopts "hu:b:m:r:U:p:D:C:w:c:d" OPTION
while getopts "hu:b:B:V:m:r:U:p:D:C:w:c:d" OPTION
do
case $OPTION in
u)
@ -75,6 +75,12 @@ do
b)
PSQL_BIN=$OPTARG
;;
B)
PG_LSCLUSTER_BIN=$OPTARG
;;
V)
PG_VERSION=$OPTARG
;;
m)
PG_MAIN=$OPTARG
;;
@ -111,6 +117,52 @@ do
esac
done
function debug() {
if [ $DEBUG -eq 1 ]
then
>&2 echo -e "[DEBUG] $1"
fi
}
debug "Starting options (before handling auto-detection/default values) :
PG_VERSION = $PG_VERSION
PG_DB = $PG_DB
PG_USER = $PG_USER
PSQL_BIN = $PSQL_BIN
PG_LSCLUSTER_BIN = $PG_LSCLUSTER_BIN
PG_MAIN = $PG_MAIN
RECOVERY_CONF = $RECOVERY_CONF
PG_DEFAULT_PORT = $PG_DEFAULT_PORT
PG_DEFAULT_APP_NAME = $PG_DEFAULT_APP_NAME
CHECK_CUR_MASTER_XLOG = $CHECK_CUR_MASTER_XLOG
REPLAY_WARNING_DELAY = $REPLAY_WARNING_DELAY
REPLAY_CRITICAL_DELAY = $REPLAY_CRITICAL_DELAY
"
# Auto-detect PostgreSQL information using pg_lsclusters
if [ -x "$PG_LSCLUSTER_BIN" ]
then
PG_CLUSTER=$( $PG_LSCLUSTER_BIN -h 2>/dev/null|head -n1 )
if [ -n "$PG_CLUSTER" ]
then
debug "pg_lsclusters output:\n\t$PG_CLUSTER"
# Output example:
# 9.6 main 5432 online,recovery postgres /var/lib/postgresql/9.6/main /var/log/postgresql/postgresql-9.6-main.log
[ -z "$PG_VERSION" ] && PG_VERSION=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $1}' )
[ -z "$PG_DEFAULT_PORT" ] && PG_DEFAULT_PORT=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $3}' )
[ -z "$PG_USER" ] && PG_USER=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $5}' )
[ -z "$PG_MAIN" ] && PG_MAIN=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $6}' )
fi
else
debug "pg_lsclusters not found ($PG_LSCLUSTER_BIN): parameters auto-detection disabled"
fi
# If auto-detection failed, use default values
[ -z "$PG_USER" ] && PG_USER="$DEFAULT_PG_USER"
[ -z "$PG_VERSION" ] && PG_VERSION="$DEFAULT_PG_VERSION"
[ -z "$PG_MAIN" ] && PG_MAIN="$DEFAULT_PG_MAIN"
[ -z "$PG_DEFAULT_PORT" ] && PG_DEFAULT_PORT="$DEFAULT_PG_PORT"
# Check PG_USER
[ -z "$PG_USER" ] && echo "UNKNOWN : Postgres user not specified" && exit 3
id "$PG_USER" > /dev/null 2>&1
@ -143,17 +195,12 @@ function psql_master_get () {
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
}
function debug() {
if [ $DEBUG -eq 1 ]
then
>&2 echo "[DEBUG] $1"
fi
}
debug "Running options :
PG_VERSION = $PG_VERSION
PG_DB = $PG_DB
PG_USER = $PG_USER
PSQL_BIN = $PSQL_BIN
PG_LSCLUSTER_BIN = $PG_LSCLUSTER_BIN
PG_MAIN = $PG_MAIN
RECOVERY_CONF = $RECOVERY_CONF
PG_DEFAULT_PORT = $PG_DEFAULT_PORT