Ways to expend nodes

[clicx]

I have running sheepdog on three node like document said:
sheep /mnt/sheep/0
-c zookeeper:192.168.2.44:2181,192.168.2.45:2181,192.168.2.46:2181
Then how can I dynamic add the fourth node? As I see IP addresses are written in command line, existing nodes don't know new node coming. Do I need restart all existing nodes?

[mitake]

The ip addresses specified with -c option is addresses of zookeeper servers. You don't have to change them when you add a new sheep node.