[Unit]
Description=ClickHouse Keeper - zookeeper compatible distributed coordination server
Requires=network-online.target
# NOTE: that After/Wants=time-sync.target is not enough, you need to ensure
# that the time was adjusted already, if you use systemd-timesyncd you are
# safe, but if you use ntp or some other daemon, you should configure it
# additionaly.
After=time-sync.target network-online.target
Wants=time-sync.target

[Service]
Type=simple
User=clickhouse
Group=clickhouse
Restart=always
RestartSec=30
RuntimeDirectory=%p  # %p is resolved to the systemd unit name
ExecStart=/usr/bin/clickhouse-keeper --config=/etc/clickhouse-keeper/keeper_config.xml --pid-file=%t/%p/%p.pid
# Minus means that this file is optional.
EnvironmentFile=-/etc/default/%p
LimitCORE=infinity
LimitNOFILE=500000
CapabilityBoundingSet=CAP_NET_ADMIN CAP_IPC_LOCK CAP_SYS_NICE CAP_NET_BIND_SERVICE

[Install]
# ClickHouse should not start from the rescue shell (rescue.target).
WantedBy=multi-user.target