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#! /bin/bash
# Automatically create systemd unit for PostgreSQL service.
set -e
. "/usr/share/postgresql-setup/library.sh"
USAGE_STRING=$"\
Usage: $0 --unit SYSTEMD_UNIT --datadir DATADIR
Automatically create systemd unit for PostgreSQL service.
For more info and howto/when use this script please look at the documentation
file /usr/share/doc/postgresql/README.rpm-dist.
Options:
--unit=UNIT_NAME The name of new systemdunit, of form
postgresql@<string>, will generate service file
postgresql@<string>.service.
--datadir=DATADIR Where the data will be stored. The postgres
user needs to have permissions to create this
directory.
"
root_prereq
opt_unit=default
opt_datadir=default
test $# -ne 0 || {
echo >&2 "$USAGE_STRING"
exit 1
}
args=$(getopt -o "" -l "datadir:,unit:,help,version" -n "$0" -- "$@") || exit 1
eval set -- "$args"
while true; do
case "$1" in
--datadir|--unit)
opt=${1##--}
opt=${opt##-}
opt=${opt//-/_}
eval "opt_$opt=\$2"
shift 2
;;
--help)
echo "$USAGE_STRING"
exit 0
;;
--version)
echo "postgresql-new-systemd-unit 8.7"
echo $"Built against PostgreSQL version 10.23."
exit 0
;;
--) # end!
shift
break
;;
*)
echo "programmer mistake ($1)" >&2
exit 1
;;
esac
done
required_ok=:
for opt in unit datadir; do
if eval "test \"\$opt_$opt\" == default"; then
required_ok=false
error "option --$opt required"
fi
done
$required_ok || die "missing argument"
case $opt_unit in *.service) opt_unit=${opt_unit%%.service} ;; esac
case $opt_unit in
postgresql@*) ;;
*) die "the --unit needs to start with 'postgresql@', e.g. 'postgresql@second'" ;;
esac
exit_handler()
{
test -z "$cleanup_dropin" || {
info "cleaning up created dropin directory"
eval "$cleanup_dropin"
}
}
cleanup_dropin=
trap exit_handler 0
dropindir="/etc/systemd/system/$opt_unit.service.d"
dropin="$dropindir/30-postgresql-setup.conf"
test ! -e "$dropindir" \
|| die "The systemd drop-in directory '$dropindir' already exists"
mkdir -p "$dropindir" \
|| die "Can not create '$dropindir'"
cleanup_dropin="rm -rf \"$dropindir\""
generate_dropin ()
{
cat <<EOF > "$1"
[Service]
Environment=PGDATA=$opt_datadir
EOF
}
generate_dropin "$dropin" || die "Can not write to '$dropin'"
reload_systemd="systemctl daemon-reload"
$reload_systemd || die $"Can not perform '$reload_systemd'"
parentdir=$(dirname "$opt_datadir")
if ! /usr/sbin/runuser -s /bin/sh -l postgres -c "test -w $(printf %q "$parentdir")"; then
error "The '$parentdir' directory doesn't exit or 'postgres' can not"
error_q "write there. Please either fix the permissions or change the"
error_q "configuration in dropin directory before trying again."
exit 1
fi
info $"The '$opt_unit.service' configured in '$dropindir' directory."
cleanup_dropin=