269 lines
8.0 KiB
Bash
Executable File
269 lines
8.0 KiB
Bash
Executable File
#!/bin/bash
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#
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# postgresql-setup - Initialization and upgrade operations for PostgreSQL
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test -z "$PATH" && export PATH="/sbin:/usr/sbin:/bin:/usr/bin"
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test x"$PGSETUP_DEBUG" != x && set -x
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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 the major version, e.g. 9.0
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PGMAJORVERSION=xxxx
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# PGENGINE is the directory containing the postmaster executable
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PGENGINE=xxxx
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# PREVMAJORVERSION is the previous major version, e.g., 8.4, for upgrades
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PREVMAJORVERSION=xxxx
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# PREVPGENGINE is the directory containing the previous postmaster executable
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PREVPGENGINE=xxxx
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# Absorb configuration settings from the specified systemd service file,
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# or the default "postgresql" service if not specified
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SERVICE_NAME="$2"
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if [ x"$SERVICE_NAME" = x ]; then
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SERVICE_NAME=postgresql
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fi
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# Pathname of the RPM distribution README
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README_RPM_DIST=xxxx
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USAGE_STRING=$"
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Usage: $0 {initdb|upgrade} [SERVICE_NAME]
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Script is aimed to help sysadmin with basic database cluster administration.
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The SERVICE_NAME is used for selection of proper unit configuration file; For
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more info and howto/when use this script please look at the docu file
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$README_RPM_DIST. The 'postgresql'
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string is used when no SERVICE_NAME is explicitly passed.
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Available operation mode:
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initdb Create a new PostgreSQL database cluster. This is usually the
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first action you perform after PostgreSQL server installation.
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upgrade Upgrade PostgreSQL database cluster to be usable with new
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server. Use this if you upgraded your PostgreSQL server to
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newer major version (currently from $PREVMAJORVERSION \
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to $PGMAJORVERSION).
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Environment:
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PGSETUP_INITDB_OPTIONS Options carried by this variable are passed to
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subsequent call of \`initdb\` binary (see man
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initdb(1)). This variable is used also during
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'upgrade' mode because the new cluster is actually
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re-initialized from the old one.
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PGSETUP_PGUPGRADE_OPTIONS Options in this variable are passed next to the
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subsequent call of \`pg_upgrade\`. For more info
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about possible options please look at man
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pg_upgrade(1).
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PGSETUP_DEBUG Set to '1' if you want to see debugging output."
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# note that these options are useful at least for help2man processing
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case "$1" in
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--version)
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echo "postgresql-setup $PGVERSION"
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exit 0
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;;
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--help|--usage)
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echo "$USAGE_STRING"
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exit 0
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;;
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esac
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# this parsing technique fails for PGDATA pathnames containing spaces,
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# but there's not much I can do about it given systemctl's output format...
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PGDATA=`systemctl show -p Environment "${SERVICE_NAME}.service" |
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sed 's/^Environment=//' | tr ' ' '\n' |
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sed -n 's/^PGDATA=//p' | tail -n 1`
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if [ x"$PGDATA" = x ]; then
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echo "failed to find PGDATA setting in ${SERVICE_NAME}.service"
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exit 1
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fi
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PGPORT=`systemctl show -p Environment "${SERVICE_NAME}.service" |
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sed 's/^Environment=//' | tr ' ' '\n' |
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sed -n 's/^PGPORT=//p' | tail -n 1`
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if [ x"$PGPORT" = x ]; then
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echo "failed to find PGPORT setting in ${SERVICE_NAME}.service"
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exit 1
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fi
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# Log file for initdb
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PGLOG=/var/lib/pgsql/initdb.log
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# Log file for pg_upgrade
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PGUPLOG=/var/lib/pgsql/pgupgrade.log
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export PGDATA
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export PGPORT
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# For SELinux we need to use 'runuser' not 'su'
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if command -v runuser &>/dev/null; then
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SU=runuser
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else
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SU=su
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fi
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script_result=0
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# code shared between initdb and upgrade actions
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perform_initdb(){
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if [ ! -e "$PGDATA" ]; then
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mkdir "$PGDATA" || return 1
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chown postgres:postgres "$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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# Create the initdb log file if needed
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if [ ! -e "$PGLOG" -a ! -h "$PGLOG" ]; 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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initdbcmd="$PGENGINE/initdb --pgdata='$PGDATA' --auth='ident'"
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initdbcmd+=" $PGSETUP_INITDB_OPTIONS"
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$SU -l postgres -c "$initdbcmd" >> "$PGLOG" 2>&1 < /dev/null
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# Create directory for postmaster log files
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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 "$PGDATA/pg_log"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$PGDATA/pg_log"
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if [ -f "$PGDATA/PG_VERSION" ]; then
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return 0
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fi
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return 1
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}
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initdb(){
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if [ -f "$PGDATA/PG_VERSION" ]; then
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echo $"Data directory is not empty!"
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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; then
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echo $"OK"
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else
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echo $"failed, see $PGLOG"
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script_result=1
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fi
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echo
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fi
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}
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upgrade(){
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# must see previous version in PG_VERSION
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if [ ! -f "$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 the database in $PGDATA is not of"
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echo $"compatible previous version $PREVMAJORVERSION."
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echo
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exit 1
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fi
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if [ ! -x "$PGENGINE/pg_upgrade" ]; then
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echo
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echo $"Please install the postgresql-upgrade RPM."
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echo
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exit 5
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fi
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# Set up log file for pg_upgrade
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rm -f "$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 configuration file for upgrade process
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HBA_CONF_BACKUP="$PGDATAOLD/pg_hba.conf.postgresql-setup.`date +%s`"
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HBA_CONF_BACKUP_EXISTS=0
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if [ ! -f $HBA_CONF_BACKUP ]; then
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mv "$PGDATAOLD/pg_hba.conf" "$HBA_CONF_BACKUP"
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HBA_CONF_BACKUP_EXISTS=1
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# For fluent upgrade 'postgres' user should be able to connect
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# to any database without password. Temporarily, no other type
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# of connection is needed.
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echo "local all postgres ident" > "$PGDATAOLD/pg_hba.conf"
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fi
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echo -n $"Upgrading database: "
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# Create empty new-format database
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if perform_initdb; then
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# Do the upgrade
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$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=$PGPORT' \
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--user=postgres \
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$PGSETUP_PGUPGRADE_OPTIONS" \
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>> "$PGUPLOG" 2>&1 < /dev/null
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if [ $? -ne 0 ]; then
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# pg_upgrade failed
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script_result=1
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fi
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else
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# initdb failed
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script_result=1
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fi
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# Move back the backed-up pg_hba.conf regardless of the script_result.
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if [ x$HBA_CONF_BACKUP_EXISTS = x1 ]; then
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mv -f "$HBA_CONF_BACKUP" "$PGDATAOLD/pg_hba.conf"
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fi
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if [ $script_result -eq 0 ]; then
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echo $"OK"
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echo
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echo $"The configuration files were replaced by default configuration."
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echo $"The previous configuration and data are stored in folder"
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echo $PGDATAOLD.
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else
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# Clean up after failure
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rm -rf "$PGDATA"
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mv "$PGDATAOLD" "$PGDATA"
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echo $"failed"
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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 "$1" in
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initdb)
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initdb
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;;
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upgrade)
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upgrade
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;;
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*)
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echo >&2 "$USAGE_STRING"
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exit 2
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esac
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exit $script_result
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