# percona xtradb cluster add new nodes

**URL:** <https://forums.percona.com/t/percona-xtradb-cluster-add-new-nodes/5222>\
**Category:** Percona XtraBackup\
**Created:** [November 21, 2016, 2:47pm UTC](https://forums.percona.com/t/percona-xtradb-cluster-add-new-nodes/5222 "2016-11-21T14:47:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![mustafa.intelix](https://avatars.discourse-cdn.com/v4/letter/m/f14d63/32.png) [@mustafa.intelix](https://forums.percona.com/u/mustafa.intelix)\
**Post date:** [November 21, 2016, 2:47pm UTC](https://forums.percona.com/t/percona-xtradb-cluster-add-new-nodes/5222/1 "2016-11-21T14:47:51Z")

</div>

Dear Percona,

Now our company (intelix.co.id) try to using percona xtradb cluster as database server.

I see the tutorial on URL [url][https://www.percona.com/doc/percona-xtradb-cluster/5.6/howtos/centos\_howto.html[/url]](https://www.percona.com/doc/percona-xtradb-cluster/5.6/howtos/centos_howto.html%5B/url%5D)

There are some question for you :

1. Why need three nodes for “percona xtradb cluster”, whatis the reason?

2. I just setup two nodes server “percona xtradb cluster” and already working, my question :

- If i want to add new node so it three nodes , how about the steps?

- If one node fails (example : server crash) how can add new node?

1. Is it “percona xtradb cluster” support innodbbackup?

Mustafa

Intelix Global Crossing

Thanks