ClickHouse/debian/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: $network
# Short-Description: Yandex clickhouse-server daemon
### END INIT INFO
#
# NOTES:
# - Should-* -- script can start if the listed facilities are missing, unlike Required-*
#
# For the documentation [1]:
#
# [1]: https://wiki.debian.org/LSBInitScripts
CLICKHOUSE_USER=clickhouse
CLICKHOUSE_GROUP=${CLICKHOUSE_USER}
SHELL=/bin/bash
PROGRAM=clickhouse-server
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CLICKHOUSE_GENERIC_PROGRAM=clickhouse
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CLICKHOUSE_PROGRAM_ENV=""
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EXTRACT_FROM_CONFIG=${CLICKHOUSE_GENERIC_PROGRAM}-extract-from-config
CLICKHOUSE_CONFDIR=/etc/$PROGRAM
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CLICKHOUSE_LOGDIR=/var/log/clickhouse-server
CLICKHOUSE_LOGDIR_USER=root
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CLICKHOUSE_DATADIR=/var/lib/clickhouse
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if [ -d "/var/lock" ]; then
LOCALSTATEDIR=/var/lock
else
LOCALSTATEDIR=/run/lock
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fi
if [ ! -d "$LOCALSTATEDIR" ]; then
mkdir -p "$LOCALSTATEDIR"
fi
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CLICKHOUSE_BINDIR=/usr/bin
CLICKHOUSE_CRONFILE=/etc/cron.d/clickhouse-server
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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.
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# Some systems lack "flock"
command -v flock >/dev/null && FLOCK=flock
# Override defaults from optional config file
test -f /etc/default/clickhouse && . /etc/default/clickhouse
die()
{
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echo $1 >&2
exit 1
}
# Check that configuration file is Ok.
check_config()
{
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if [ -x "$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 ${CLICKHOUSE_CONFIG} doesn't parse successfully. Won't restart server. You may use forcerestart if you are sure.";
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fi
}
initdb()
{
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${CLICKHOUSE_GENERIC_PROGRAM} install --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
start()
{
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${CLICKHOUSE_GENERIC_PROGRAM} start --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
stop()
{
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${CLICKHOUSE_GENERIC_PROGRAM} stop --pid-path "${CLICKHOUSE_PIDDIR}"
}
restart()
{
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${CLICKHOUSE_GENERIC_PROGRAM} restart --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}"
}
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forcestop()
{
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${CLICKHOUSE_GENERIC_PROGRAM} stop --force --pid-path "${CLICKHOUSE_PIDDIR}"
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}
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service_or_func()
{
if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
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systemctl $1 $PROGRAM
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else
$1
fi
}
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forcerestart()
{
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forcestop
# Should not use 'start' function if systemd active
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service_or_func start
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}
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use_cron()
{
# 1. running systemd
if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
return 1
fi
# 2. disabled by config
if [ -z "$CLICKHOUSE_CRONFILE" ]; then
return 2
fi
return 0
}
# returns false if cron disabled (with systemd)
enable_cron()
{
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use_cron && sed -i 's/^#*//' "$CLICKHOUSE_CRONFILE"
}
# returns false if cron disabled (with systemd)
disable_cron()
{
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use_cron && sed -i 's/^#*/#/' "$CLICKHOUSE_CRONFILE"
}
is_cron_disabled()
{
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use_cron || return 0
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# 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()
{
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# See how we were called.
EXIT_STATUS=0
case "$1" in
start)
service_or_func start && enable_cron
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;;
stop)
disable_cron
service_or_func stop
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;;
restart)
service_or_func restart && enable_cron
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;;
forcestop)
disable_cron
forcestop
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;;
forcerestart)
forcerestart && enable_cron
;;
reload)
service_or_func restart
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;;
condstart)
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service_or_func start
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;;
condstop)
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service_or_func stop
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;;
condrestart)
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service_or_func restart
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;;
condreload)
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service_or_func restart
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;;
initdb)
initdb
;;
enable_cron)
enable_cron
;;
disable_cron)
disable_cron
;;
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*)
echo "Usage: $0 {start|stop|status|restart|forcestop|forcerestart|reload|condstart|condstop|condrestart|condreload|initdb}"
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exit 2
;;
esac
exit $EXIT_STATUS
}
status()
{
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${CLICKHOUSE_GENERIC_PROGRAM} status --pid-path "${CLICKHOUSE_PIDDIR}"
}
# Running commands without need of locking
case "$1" in
status)
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status
exit 0
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;;
esac
(
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if $FLOCK -n 9; then
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main "$@"
else
echo "Init script is already running" && exit 1
fi
) 9> $LOCKFILE