340 lines
7.6 KiB
Bash
340 lines
7.6 KiB
Bash
#!/bin/sh
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#
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# postgresql This is the init script for starting up the PostgreSQL
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# server.
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#
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# This script is slightly unusual in that the name of the daemon (postmaster)
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# is not the same as the name of the subsystem (postgresql)
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#
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# chkconfig: - 64 36
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# description: PostgreSQL database server.
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# processname: postmaster
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# pidfile: /var/run/postmaster.PORT.pid
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### BEGIN INIT INFO
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# Provides: postgresql
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# Required-Start: $local_fs $remote_fs $network $named $syslog $time
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# Required-Stop: $local_fs $remote_fs $network $named $syslog $time
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: start and stop PostgreSQL server
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# Description: PostgreSQL database server
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### END INIT INFO
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# PGVERSION is the full package version, e.g., 9.0.2
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# Note: the specfile inserts the correct value during package build
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PGVERSION=xxxx
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# PGMAJORVERSION is major version, e.g., 9.0 (this should match PG_VERSION)
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PGMAJORVERSION=`echo "$PGVERSION" | sed 's/^\([0-9]*\.[0-9]*\).*$/\1/'`
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# PREVMAJORVERSION is the previous major version, e.g., 8.4, for upgrades
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# Note: the specfile inserts the correct value during package build
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PREVMAJORVERSION=xxxx
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# PREVPGENGINE is the directory containing the previous postmaster executable
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# Note: the specfile inserts the correct value during package build
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PREVPGENGINE=xxxx
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# PGDOCDIR is the directory containing the package's documentation
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# Note: the specfile inserts the correct value during package build
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PGDOCDIR=xxxx
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# Source function library.
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. /etc/rc.d/init.d/functions
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# Get network config.
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. /etc/sysconfig/network
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# Find the name of the script
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NAME=`basename $0`
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if [ ${NAME:0:1} = "S" -o ${NAME:0:1} = "K" ]
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then
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NAME=${NAME:3}
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fi
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# For SELinux we need to use 'runuser' not 'su'
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if [ -x /sbin/runuser ]
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then
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SU=runuser
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else
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SU=su
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fi
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# Set defaults for configuration variables
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PGENGINE=/usr/bin
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PGPORT=5432
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PGDATA=/var/lib/pgsql/data
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PGLOG=/var/lib/pgsql/pgstartup.log
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# Value to set as postmaster process's oom_adj
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PG_OOM_ADJ=-17
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# Override defaults from /etc/sysconfig/pgsql if file is present
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[ -f /etc/sysconfig/pgsql/${NAME} ] && . /etc/sysconfig/pgsql/${NAME}
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export PGDATA
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export PGPORT
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lockfile="/var/lock/subsys/${NAME}"
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pidfile="/var/run/postmaster.${PGPORT}.pid"
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script_result=0
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start(){
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[ -x "$PGENGINE/postmaster" ] || exit 5
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PSQL_START=$"Starting ${NAME} service: "
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# Make sure startup-time log file is valid
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if [ ! -e "$PGLOG" -a ! -h "$PGLOG" ]
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then
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touch "$PGLOG" || exit 4
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chown postgres:postgres "$PGLOG"
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chmod go-rwx "$PGLOG"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$PGLOG"
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fi
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# Check for the PGDATA structure
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if [ -f "$PGDATA/PG_VERSION" ] && [ -d "$PGDATA/base" ]
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then
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# Check version of existing PGDATA
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if [ x`cat "$PGDATA/PG_VERSION"` = x"$PGMAJORVERSION" ]
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then
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: A-OK
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elif [ x`cat "$PGDATA/PG_VERSION"` = x"$PREVMAJORVERSION" ]
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then
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echo
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echo $"An old version of the database format was found."
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echo $"Use \"service postgresql upgrade\" to upgrade to version $PGMAJORVERSION."
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echo $"See $PGDOCDIR/README.rpm-dist for more information."
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exit 1
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else
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echo
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echo $"An old version of the database format was found."
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echo $"You need to dump and reload before using PostgreSQL $PGMAJORVERSION."
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echo $"See $PGDOCDIR/README.rpm-dist for more information."
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exit 1
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fi
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else
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# No existing PGDATA! Warn the user to initdb it.
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echo
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echo $"$PGDATA is missing. Use \"service postgresql initdb\" to initialize the cluster first."
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echo_failure
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echo
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exit 1
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fi
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echo -n "$PSQL_START"
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test x"$PG_OOM_ADJ" != x && echo "$PG_OOM_ADJ" > /proc/self/oom_adj
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$SU -l postgres -c "$PGENGINE/postmaster -p '$PGPORT' -D '$PGDATA' ${PGOPTS} &" >> "$PGLOG" 2>&1 < /dev/null
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sleep 2
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pid=`head -n 1 "$PGDATA/postmaster.pid" 2>/dev/null`
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if [ "x$pid" != x ]
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then
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success "$PSQL_START"
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touch "$lockfile"
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echo $pid > "$pidfile"
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echo
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else
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failure "$PSQL_START"
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echo
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script_result=1
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fi
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}
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stop(){
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echo -n $"Stopping ${NAME} service: "
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if [ -e "$lockfile" ]
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then
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$SU -l postgres -c "$PGENGINE/pg_ctl stop -D '$PGDATA' -s -m fast" > /dev/null 2>&1 < /dev/null
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ret=$?
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if [ $ret -eq 0 ]
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then
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echo_success
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rm -f "$pidfile"
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rm -f "$lockfile"
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else
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echo_failure
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script_result=1
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fi
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else
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# not running; per LSB standards this is "ok"
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echo_success
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fi
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echo
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}
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restart(){
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stop
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start
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}
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condrestart(){
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[ -e "$lockfile" ] && restart || :
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}
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reload(){
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$SU -l postgres -c "$PGENGINE/pg_ctl reload -D '$PGDATA' -s" > /dev/null 2>&1 < /dev/null
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}
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# code shared between initdb and upgrade actions
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perform_initdb(){
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if [ ! -e "$PGDATA" -a ! -h "$PGDATA" ]
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then
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mkdir -p "$PGDATA" || return 1
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chown postgres:postgres "$PGDATA"
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chmod go-rwx "$PGDATA"
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fi
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# Clean up SELinux tagging for PGDATA
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[ -x /sbin/restorecon ] && /sbin/restorecon "$PGDATA"
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# Make sure the startup-time log file is OK, too
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if [ ! -e "$PGLOG" -a ! -h "$PGLOG" ]
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then
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touch "$PGLOG" || return 1
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chown postgres:postgres "$PGLOG"
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chmod go-rwx "$PGLOG"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$PGLOG"
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fi
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# Initialize the database
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$SU -l postgres -c "$PGENGINE/initdb --pgdata='$PGDATA' --auth='ident'" >> "$PGLOG" 2>&1 < /dev/null
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# Create directory for postmaster log
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mkdir "$PGDATA/pg_log"
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chown postgres:postgres "$PGDATA/pg_log"
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chmod go-rwx "$PGDATA/pg_log"
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if [ -f "$PGDATA/PG_VERSION" ]
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then
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return 0
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fi
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return 1
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}
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initdb(){
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if [ -f "$PGDATA/PG_VERSION" ]
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then
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echo -n $"Data directory is not empty!"
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echo_failure
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echo
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script_result=1
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else
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echo -n $"Initializing database: "
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if perform_initdb
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then
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echo_success
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else
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echo_failure
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script_result=1
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fi
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echo
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fi
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}
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upgrade(){
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# must see previous version in PG_VERSION
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if [ ! -f "$PGDATA/PG_VERSION" -o \
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x`cat "$PGDATA/PG_VERSION"` != x"$PREVMAJORVERSION" ]
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then
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echo
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echo $"Cannot upgrade because database is not of version $PREVMAJORVERSION."
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echo_failure
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echo
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exit 1
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fi
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if [ ! -x "$PGENGINE/pg_upgrade" ]
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then
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echo
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echo $"Please install the postgresql-upgrade RPM."
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echo_failure
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echo
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exit 5
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fi
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# Make sure service is stopped
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stop
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echo -n $"Upgrading database: "
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# Set up log file for pg_upgrade
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PGUPLOG=/var/lib/pgsql/pgupgrade.log
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rm -f "$PGUPLOG"
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touch "$PGUPLOG" || exit 1
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chown postgres:postgres "$PGUPLOG"
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chmod go-rwx "$PGUPLOG"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$PGUPLOG"
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# Move old DB to PGDATAOLD
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PGDATAOLD="${PGDATA}-old"
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rm -rf "$PGDATAOLD"
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mv "$PGDATA" "$PGDATAOLD" || exit 1
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# Create empty new-format database
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if perform_initdb
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then
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# Do the upgrade
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$SU -l postgres -c "$PGENGINE/pg_upgrade \
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'--old-bindir=$PREVPGENGINE' \
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'--new-bindir=$PGENGINE' \
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'--old-datadir=$PGDATAOLD' \
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'--new-datadir=$PGDATA' \
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--link \
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'--old-port=$PGPORT' '--new-port=$PGPORT' \
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--user=postgres" >> "$PGUPLOG" 2>&1 < /dev/null
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if [ $? -ne 0 ]
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then
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# pg_upgrade failed
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script_result=1
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fi
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else
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# initdb failed
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script_result=1
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fi
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if [ $script_result -eq 0 ]
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then
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echo_success
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else
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# Clean up after failure
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rm -rf "$PGDATA"
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mv "$PGDATAOLD" "$PGDATA"
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echo_failure
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fi
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echo
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echo $"See $PGUPLOG for details."
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}
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# See how we were called.
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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status)
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status -p "$pidfile" postmaster
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script_result=$?
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;;
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restart)
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restart
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;;
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condrestart|try-restart)
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condrestart
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;;
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reload)
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reload
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;;
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force-reload)
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restart
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;;
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initdb)
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initdb
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;;
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upgrade)
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upgrade
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;;
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*)
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echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|initdb|upgrade}"
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exit 2
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esac
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exit $script_result
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