ClickHouse/packages/clickhouse-server.init

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#!/bin/sh
### BEGIN INIT INFO
# Provides: clickhouse-server
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Should-Start: $time $network
# Should-Stop: $network
# Short-Description: clickhouse-server daemon
### END INIT INFO
#
# NOTES:
# - Should-* -- script can start if the listed facilities are missing, unlike Required-*
#
# For the documentation [1]:
#
# [1]: https://wiki.debian.org/LSBInitScripts
CLICKHOUSE_USER=clickhouse
CLICKHOUSE_GROUP=${CLICKHOUSE_USER}
SHELL=/bin/bash
PROGRAM=clickhouse-server
CLICKHOUSE_GENERIC_PROGRAM=clickhouse
CLICKHOUSE_PROGRAM_ENV=""
EXTRACT_FROM_CONFIG=${CLICKHOUSE_GENERIC_PROGRAM}-extract-from-config
CLICKHOUSE_CONFDIR=/etc/$PROGRAM
CLICKHOUSE_LOGDIR=/var/log/clickhouse-server
CLICKHOUSE_LOGDIR_USER=root
CLICKHOUSE_DATADIR=/var/lib/clickhouse
if [ -d "/var/lock" ]; then
LOCALSTATEDIR=/var/lock
else
LOCALSTATEDIR=/run/lock
fi
if [ ! -d "$LOCALSTATEDIR" ]; then
mkdir -p "$LOCALSTATEDIR"
fi
CLICKHOUSE_BINDIR=/usr/bin
CLICKHOUSE_CRONFILE=/etc/cron.d/clickhouse-server
CLICKHOUSE_CONFIG=$CLICKHOUSE_CONFDIR/config.xml
LOCKFILE=$LOCALSTATEDIR/$PROGRAM
CLICKHOUSE_PIDDIR=/var/run/$PROGRAM
CLICKHOUSE_PIDFILE="$CLICKHOUSE_PIDDIR/$PROGRAM.pid"
# CLICKHOUSE_STOP_TIMEOUT=60 # Disabled by default. Place to /etc/default/clickhouse if you need.
# Some systems lack "flock"
command -v flock >/dev/null && FLOCK=flock
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# Override defaults from optional config file and export them automatically
set -a
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test -f /etc/default/clickhouse && . /etc/default/clickhouse
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set +a
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die()
{
echo $1 >&2
exit 1
}
# Check that configuration file is Ok.
check_config()
{
if [ -x "$CLICKHOUSE_BINDIR/$EXTRACT_FROM_CONFIG" ]; then
su -s $SHELL ${CLICKHOUSE_USER} -c "$CLICKHOUSE_BINDIR/$EXTRACT_FROM_CONFIG --config-file=\"$CLICKHOUSE_CONFIG\" --key=path" >/dev/null || die "Configuration file ${CLICKHOUSE_CONFIG} doesn't parse successfully. Won't restart server. You may use forcerestart if you are sure.";
fi
}
initdb()
{
${CLICKHOUSE_GENERIC_PROGRAM} install --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
start()
{
${CLICKHOUSE_GENERIC_PROGRAM} start --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
stop()
{
${CLICKHOUSE_GENERIC_PROGRAM} stop --pid-path "${CLICKHOUSE_PIDDIR}"
}
restart()
{
${CLICKHOUSE_GENERIC_PROGRAM} restart --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
forcestop()
{
${CLICKHOUSE_GENERIC_PROGRAM} stop --force --pid-path "${CLICKHOUSE_PIDDIR}"
}
service_or_func()
{
if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
systemctl $1 $PROGRAM
else
$1
fi
}
forcerestart()
{
forcestop
# Should not use 'start' function if systemd active
service_or_func start
}
use_cron()
{
# 1. running systemd
if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
return 1
fi
# 2. checking whether the config is existed
if [ ! -f "$CLICKHOUSE_CRONFILE" ]; then
return 1
fi
# 3. disabled by config
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if [ -z "$CLICKHOUSE_CRONFILE" ]; then
return 2
fi
return 0
}
# returns false if cron disabled (with systemd)
enable_cron()
{
use_cron && sed -i 's/^#*//' "$CLICKHOUSE_CRONFILE"
}
# returns false if cron disabled (with systemd)
disable_cron()
{
use_cron && sed -i 's/^#*/#/' "$CLICKHOUSE_CRONFILE"
}
is_cron_disabled()
{
use_cron || return 0
# Assumes that either no lines are commented or all lines are commented.
# Also please note, that currently cron file for ClickHouse has only one line (but some time ago there was more).
grep -q -E '^#' "$CLICKHOUSE_CRONFILE";
}
main()
{
# See how we were called.
EXIT_STATUS=0
case "$1" in
start)
service_or_func start && enable_cron
;;
stop)
disable_cron
service_or_func stop
;;
restart)
service_or_func restart && enable_cron
;;
forcestop)
disable_cron
forcestop
;;
forcerestart)
forcerestart && enable_cron
;;
reload)
service_or_func restart
;;
condstart)
service_or_func start
;;
condstop)
service_or_func stop
;;
condrestart)
service_or_func restart
;;
condreload)
service_or_func restart
;;
initdb)
initdb
;;
enable_cron)
enable_cron
;;
disable_cron)
disable_cron
;;
*)
echo "Usage: $0 {start|stop|status|restart|forcestop|forcerestart|reload|condstart|condstop|condrestart|condreload|initdb}"
exit 2
;;
esac
exit $EXIT_STATUS
}
status()
{
${CLICKHOUSE_GENERIC_PROGRAM} status --pid-path "${CLICKHOUSE_PIDDIR}"
}
# Running commands without need of locking
case "$1" in
status)
status
exit 0
;;
esac
(
if $FLOCK -n 9; then
main "$@"
else
echo "Init script is already running" && exit 1
fi
) 9> $LOCKFILE