Multi-master clustering

which ejabbed do you use?
you can try with follow links
https://docs.ejabberd.im/admin/guide/clustering/
https://raymii.org/s/tutorials/Set_up_a_federated_XMPP_Chat_Network_with...

Hi
I install ejabberd-15.09-linux-x86_64-installer.run on debian(jessie). I try to cluster them and I cant.
who did clustering with ejabberd 15.09 ?
I do follow steps:

- I Install erlang(18) and ejabberd
- Create ejabberd.cfg file
- In ejabberdctl.cfg: set(local) INET_DIST_INTERFACE={10,0,0,1} and ERLANG NODE NAME
- same .erlang cookie(/root/.erlangcookie)
I use join_cluster and joincluster commands
/opt/ejabberd-15.09/bin/ejabberdctl join_cluster 'ejabberd@server1'
/opt/ejabberd-15.09/bin/joincluster 'ejabberd@server1'
it return:

--------------------------------------------------------------------

ejabberd cluster configuration

This ejabberd node will be configured for use in an ejabberd cluster.
IMPORTANT: all local data from the database will be lost, and
cluster database will be initialized. All data from the master
node will be replicated to this one.

--------------------------------------------------------------------
Press any key to continue, or Ctrl+C to stop now

Using passed parameter for remote master node name: ejabberd@70_slave
Using commands:
/opt/ejabberd-15.09/bin/ejabberdctl

.

and try with easy_cluster.erl(https://raymii.org/s/tutorials/Set_up_a_federated_XMPP_Chat_Network_with...) , but it not working,too

please some body help me.plz