Run Crane master/slave on each node
P.S. Master need to be run on the leader node defined in our membership protocol,
which is the one with the lowest id defined in /env.py
python3 crane_master.py
python3 crane_slave.py
P.S. Can be performed on slave node(s) exclusively
List all members in local list as well as its three neighbors
ls
Show local ip address
self
Join the group. Need to be called once server is up/want to re-join
join
Leave the membership， could re-join later
decommission
Leave the group permanently, the same as ctrl+c
exit