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|
#!/sbin/openrc-run
name="PostgreSQL"
description="PostgreSQL @VERSION@ server"
extra_started_commands="stop_fast stop_force stop_smart reload reload_force promote"
description_stop_fast="Stop using Fast Shutdown mode (SIGINT)"
description_stop_force="Stop using Immediate Shutdown mode (SIGQUIT)"
description_stop_smart="Stop using Smart Shutdown mode (SIGTERM)"
description_reload="Reload configuration"
description_reload_force="Reload configuration and restart if needed"
description_promote="Promote standby server to master - exit recovery and begin read-write operations"
extra_stopped_commands="setup"
description_setup="Initialize a new PostgreSQL cluster"
: ${user:="postgres"}
: ${group:="postgres"}
: ${auto_setup:="yes"}
: ${start_timeout:=10}
# nice_timeout, rude_timeout and force_timeout are for backward compatibility.
: ${stop_smart_timeout:=${nice_timeout:-5}}
: ${stop_fast_timeout:=${rude_timeout:-10}}
: ${stop_force_timeout:=${force_timeout:-0}}
: ${data_dir:="/var/lib/postgresql/@VERSION@/data"}
: ${conf_dir:=$data_dir}
: ${logfile:="$data_dir/postmaster.log"}
: ${env_vars:=}
: ${initdb_opts:=}
: ${pg_opts:=}
: ${port:=5432}
command="/usr/bin/postgres"
conffile="$conf_dir/postgresql.conf"
pidfile="$data_dir/postmaster.pid"
start_stop_daemon_args="
--user $user
--group $group
--pidfile $pidfile
--wait 100"
depend() {
use net
after firewall
if [ "$(get_config log_destination)" = "syslog" ]; then
use logger
fi
}
start_pre() {
check_deprecated_var nice_timeout stop_smart_timeout
check_deprecated_var rude_timeout stop_fast_timeout
check_deprecated_var rude_quit stop_fast_timeout
check_deprecated_var force_timeout stop_force_timeout
check_deprecated_var force_quit stop_force_timeout
# For backward compatibility only.
[ "$rude_quit" = no ] && [ "stop_fast_timeout" -eq 10 ] && stop_fast_timeout=0
[ "$force_quit" = yes ] && [ "$stop_force_timeout" -eq 0 ] && stop_force_timeout=2
if [ ! -d "$data_dir/base" ]; then
if yesno "$auto_setup"; then
setup || return 1
else
eerror "Database not found at: $data_dir"
eerror "Please make sure that 'data_dir' points to the right path."
eerror "You can run '/etc/init.d/postgresql setup' to setup a new database cluster."
return 1
fi
fi
local socket_dirs=$(get_config "unix_socket_directories" "/run/postgresql")
local port=$(get_config "port" "$port")
start_stop_daemon_args="$start_stop_daemon_args --env PGPORT=$port"
local var; for var in $env_vars; do
start_stop_daemon_args="$start_stop_daemon_args --env $var"
done
(
# Set the proper permission for the socket paths and create them if
# then don't exist.
set -f; IFS=","
for dir in $socket_dirs; do
if [ -e "${dir%/}/.s.PGSQL.$port" ]; then
eerror "Socket conflict. A server is already listening on:"
eerror " ${dir%/}/.s.PGSQL.$port"
eerror "Hint: Change 'port' to listen on a different socket."
return 1
elif [ "${dir%/}" != "/tmp" ]; then
checkpath -d -m 1775 -o $user:$group "$dir"
fi
done
)
}
start() {
local retval
ebegin "Starting $name"
rm -f "$pidfile"
start-stop-daemon --start \
$start_stop_daemon_args \
--exec /usr/bin/pg_ctl \
-- start \
--silent \
-w --timeout="$start_timeout" \
--log="$logfile" \
--pgdata="$conf_dir" \
-o "--data-directory=$data_dir $pg_opts"
retval=$?
if [ $retval -ne 0 ]; then
eerror "Check the log for a possible explanation of the above error:"
eerror " $logfile"
fi
eend $retval
}
stop() {
local retry=''
[ "$stop_smart_timeout" -eq 0 ] \
|| retry="SIGTERM/$stop_smart_timeout"
[ "$stop_fast_timeout" -eq 0 ] \
|| retry="${retry:+$retry/}SIGINT/$stop_fast_timeout"
[ "$stop_force_timeout" -eq 0 ] \
|| retry="${retry:+$retry/}SIGQUIT/$stop_force_timeout"
[ "$retry" ] \
|| retry='SIGINT/5'
local seconds=$(( $stop_smart_timeout + $stop_fast_timeout + $stop_force_timeout ))
ebegin "Stopping $name (this can take up to $seconds seconds)"
start-stop-daemon --stop \
--exec "$command" \
--retry "$retry" \
--progress \
--pidfile "$pidfile"
eend $?
}
stop_smart() {
_stop SIGTERM "smart shutdown"
}
stop_fast() {
_stop SIGINT "fast shutdown"
}
stop_force() {
_stop SIGQUIT "immediate shutdown"
}
_stop() {
ebegin "Stopping $name ($2)"
start-stop-daemon --stop \
--exec "$command" \
--signal "$1" \
--pidfile "$pidfile" \
&& mark_service_stopped "$RC_SVCNAME"
eend $?
}
reload() {
ebegin "Reloading $name configuration"
start-stop-daemon --signal HUP --pidfile "$pidfile" && check_config_errors
local retval=$?
is_pending_restart || true
eend $retval
}
reload_force() {
ebegin "Reloading $name configuration"
start-stop-daemon --signal HUP --pidfile "$pidfile" && check_config_errors
local retval=$?
if [ $retval -eq 0 ] && is_pending_restart; then
rc-service --nodeps "$RC_SVCNAME" restart
retval=$?
fi
eend $retval
}
promote() {
ebegin "Promoting $name to master"
cd "$data_dir" # to avoid the: could not change directory to "/root"
su $user -c "pg_ctl promote --wait --log=$logfile --pgdata=$conf_dir -o '--data-directory=$data_dir'"
eend $?
}
setup() {
local bkpdir
ebegin "Creating a new $name database cluster"
if [ -d "$data_dir/base" ]; then
eend 1 "$data_dir/base already exists!"; return 1
fi
# If data_dir exists, backup configs.
if [ -d "$data_dir" ]; then
bkpdir="$(mktemp -d)"
find "$data_dir" -type f -name "*.conf" -maxdepth 1 \
-exec mv -v {} "$bkpdir"/ \;
rm -rf "$data_dir"/*
fi
install -d -m 0700 -o $user -g $group "$data_dir"
install -d -m 0750 -o $user -g $group "$conf_dir"
cd "$data_dir" # to avoid the: could not change directory to "/root"
su $user -c "/usr/bin/initdb $initdb_opts --pgdata $data_dir"
local retval=$?
if [ -d "$bkpdir" ]; then
# Move backuped configs back.
mv -v "$bkpdir"/* "$data_dir"/
rm -rf "$bkpdir"
fi
if [ "${data_dir%/}" != "${conf_dir%/}" ]; then
# Move configs from data_dir to conf_dir and symlink them to data_dir.
local name newname
for name in postgresql.conf pg_hba.conf pg_ident.conf; do
newname="$name"
[ ! -e "$conf_dir"/$name ] || newname="$name.new"
mv "$data_dir"/$name "$conf_dir"/$newname
ln -s "$conf_dir"/$name "$data_dir"/$name
done
fi
eend $retval
}
get_config() {
local name="$1"
local default="${2:-}"
if [ ! -f "$conffile" ]; then
printf '%s\n' "$default"
return 1
fi
sed -En "/^\s*${name}\b/{ # find line starting with the name
s/^\s*${name}\s*=?\s*([^#]+).*/\1/; # capture the value
s/\s*$//; # trim trailing whitespaces
s/^['\"](.*)['\"]$/\1/; # remove delimiting quotes
p
}" "$conffile" \
| grep . || printf '%s\n' "$default"
}
check_config_errors() {
local out; out=$(psql_command "
select
sourcefile || ': line ' || sourceline || ': ' || error ||
case when name is not null
then ': ' || name || ' = ''' || setting || ''''
else ''
end
from pg_file_settings
where error is not null
and name not in (select name from pg_settings where pending_restart = true);
")
if [ $? -eq 0 ] && [ "$out" ]; then
eerror 'Configuration file contains errors:'
printf '%s\n' "$out" | while read line; do
eerror " $line"
done
return 1
fi
}
is_pending_restart() {
local out; out=$(psql_command "select name from pg_settings where pending_restart = true;")
if [ $? -eq 0 ] && [ "$out" ]; then
ewarn 'PostgreSQL must be restarted to apply changes in the following parameters:'
local line; for line in $out; do
ewarn " $line"
done
return 0
fi
return 1
}
check_deprecated_var() {
local old_name="$1"
local new_name="$2"
if [ -n "$(getval "$old_name")" ]; then
ewarn "Variable '$old_name' is deprecated, please use '$new_name' instead."
fi
}
getval() {
eval "printf '%s\n' \"\$$1\""
}
psql_command() {
su $user -c "psql --no-psqlrc --no-align --tuples-only -q -c \"$1\""
}
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