Re: Need to fix one more glitch in upgrade to -10.2

On Sat, 17 Feb 2018, Adrian Klaver wrote:

> How did you upgrade, dump/restore or pg_upgrade?

Adrian,

Ran 'pg_dumpall -c -f <filename>.sql' prior to doing anything. Then built,
installed the new version, upgraded rc.postgresql (only differences were
version numbers), and ran 'pg_upgrade ...' with the appropriate binary and
data directory paths.

> What is in rc.postgresql? Is there maybe another start script in etc/ for
> the new version?

Nope. One script per application.

/etc/rc.d/rc.postgresql:

#!/bin/bash

# PostgreSQL startup script for Slackware Linux
#
# $Revision$
# $Date$
#
# Copyright 2007-2018 Adis Nezirovic <adis_at_linux.org.ba>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Do not source this script (since it contains exit() calls)
#
# Since version 9.3 this startup script can run multiple PostgreSQL
# versions on different ports and with different data dirs.
# # e.g. PG_VERSION=10.2 PG_PORT=6432 /etc/rc.d/rc(dot)(at)PRGNAM@ start

PG_VERSION=${PG_VERSION:-(at)PG_VERSION@}
PG_PORT=${PG_PORT:-(at)PG_PORT@}
LIBDIRSUFFIX="@LIBDIRSUFFIX@"
LOGFILE=/var/log/@PRGNAM(at)-$PG_VERSION
DATADIR=/var/lib/pgsql/$PG_VERSION/data
POSTGRES=/usr/lib${LIBDIRSUFFIX}/@PRGNAM@/$PG_VERSION/bin/postgres
PG_CTL=/usr/lib${LIBDIRSUFFIX}/@PRGNAM@/$PG_VERSION/bin/pg_ctl
PIDFILE=$DATADIR/postmaster.pid

# oom-killer score
#
#
http://www.postgresql.org/docs/10.2/static/kernel-resources.html#LINUX-MEMORY-OVERCOMMIT
PG_OOM_ADJUST_FILE=/proc/self/oom_score_adj
PG_MASTER_OOM_SCORE_ADJ=-1000
PG_CHILD_OOM_SCORE_ADJ=0
PG_ENV="PG_OOM_ADJUST_FILE=$PG_OOM_ADJUST_FILE
PG_OOM_ADJUST_VALUE=$PG_CHILD_OOM_SCORE_ADJ"

# Return values (according to LSB):
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - insufficient privilege
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running

pg_ctl()
{
CMD="$PG_CTL -o '-p $PG_PORT' $@"
su - postgres -c "$PG_ENV $CMD"
}

if [ ! -f $POSTGRES ]; then
echo "Could not find 'postgres' binary. Maybe PostgreSQL is not
installed properly?"
exit 5
fi

case "$1" in

"start")
echo "Starting PostgreSQL"
touch $LOGFILE
chown postgres:wheel $LOGFILE
chmod 0640 $LOGFILE

if [ ! -e $DATADIR/PG_VERSION ]; then
echo "You should initialize the PostgreSQL database at
location $DATADIR"
echo "e.g. su postgres -c \"initdb -D $DATADIR
--locale=en_US.UTF-8 -A md5 -W\""
exit 6
fi

if [ $(pgrep -f $POSTGRES) ]; then

echo "PostgreSQL daemon already running"
if [ ! -f $PIDFILE ]; then
echo "Warning: Missing pid file $PIDFILE"
fi
exit 1

else
test -e "$PG_OOM_ADJUST_FILE" && echo
"$PG_MASTER_OOM_SCORE_ADJ" > "$PG_OOM_ADJUST_FILE"
pg_ctl start -w -l $LOGFILE -D $DATADIR
exit 0
fi
;;

"stop")
echo "Shutting down PostgreSQL..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m smart
;;

"force-stop")
# Take care! This will kill _all_ client connections
# and rollback current transactions.
echo "Shutting down PostgreSQL (fast)..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m fast
;;

"unclean-stop")
# Take care! This will abort server process itself
# resulting with database recovery on next start.
echo "Shutting down PostgreSQL (immediate)..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m immediate
;;

"restart")
echo "Restarting PostgreSQL..."
test -e "$PG_OOM_ADJUST_FILE" && echo
"$PG_MASTER_OOM_SCORE_ADJ" > "$PG_OOM_ADJUST_FILE"
pg_ctl restart -l $LOGFILE -D $DATADIR -m smart
;;

"force-restart")
# Take care! This will kill _all_ client connections
# and rollback current transactions.
echo "Restarting PostgreSQL (fast)..."
pg_ctl restart -l $LOGFILE -D $DATADIR -m fast
;;

"unclean-restart")
# Take care: This will abort server process itself
# resulting with database recovery on start.
echo "Restarting PostgreSQL (immediate)..."
pg_ctl restart -l $LOGFILE -D $DATADIR -m immediate
;;

"reload")
echo "Reloading configuration for PostgreSQL..."
pg_ctl reload -l $LOGFILE -D $DATADIR -m smart
;;

"status")
if [ $(pgrep -f $POSTGRES) ]; then
echo "PostgreSQL is running"

if [ ! -e $PIDFILE ]; then
echo "Warning: Missing pid file $PIDFILE"
fi

exit 0
else
echo "PostgreSQL is stopped"

if [ -e $PIDFILE ]; then
echo "Detected stale pid file $PIDFILE"
fi

exit 0
fi
;;

*)
# unclean-stop and unclean-restart are not documented on
purpose.
echo "Usage: $0
{start|stop|force-stop|status|restart|force-restart|reload}"
exit 1
;;
esac

Regards,

Rich