Hi Adrien, zkServer.sh start-foreground - starts the ZooKeeper process in the foreground. Good for debugging (thats what I use it for), or check something, as you will have the logs printed to standard output (console most probably). The "start" is what you want to use in production environment. the process will run in the background.
' What is "After=network.target" ? ' - ZooKeeper should only start after the network... available? I think this should be something like After=network-online.target But looking at the others, I'm not entirely sure either what they really do. But checko out this jira - https://issues.apache.org/jira/browse/ZOOKEEPER-2095 There was a patch about this, and they added systemd startup/conf files. Sorry, this is all I could come up with, as I'm not familiar with this part either. Hope it helps. Regards, Norbert On Fri, Jul 13, 2018 at 5:30 PM adrien ruffie <adriennolar...@hotmail.fr> wrote: > Hello Zookeeper's users, > > > I have 2 questions for you. > > > what is the real difference between these 2 following commands ? (I don't > find any documentation) > > > zkServer.sh start-foreground > > and > > zkServer.sh start > > > > My second question is, how I can correctly start my zookeeper as a > systemclt service ? > > What is the common best template to write into > /etc/systemd/system/zookeeper.service ? > > Do you use Restart=always ? RestartSec=0s ? > > What is "After=network.target" ? > > If my Zookeeper does not really start in 300 sec, the process will be > shutdown ? > > > Do you have any example of zookeeper service file ? > > > Because our zookeeper.service is right now: > > > [Unit] > Description=ZooKeeper > > [Service] > Type=simple > User=zookeeper > Group=zookeeper > ExecStart=/usr/local/zookeeper-3.4.9/bin/zkServer.sh start-foreground > > TimeoutSec=300 > > [Install] > WantedBy=multi-user.target > > ------------------- But I found this following on a blog: > > > [Unit] > Description=Apache Zookeeper > After=network.target > > [Service] > Type=forking > User=zookeeper > Group=zookeeper > SyslogIdentifier=zookeeper > Restart=always > RestartSec=0s > ExecStart=/usr/bin/zookeeper-server start > ExecStop=/usr/bin/zookeeper-server stop > ExecReload=/usr/bin/zookeeper-server restart > > [Install] > WantedBy=multi-user.target > > > Thank you very much and best regards > > Adrien >
