# Best way to add slave to the XtraDB cluster

**URL:** <https://forums.percona.com/t/best-way-to-add-slave-to-the-xtradb-cluster/5795>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [August 8, 2017, 3:15am UTC](https://forums.percona.com/t/best-way-to-add-slave-to-the-xtradb-cluster/5795 "2017-08-08T03:15:30Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Paul.V](https://avatars.discourse-cdn.com/v4/letter/p/ba9def/32.png) [@Paul.V](https://forums.percona.com/u/Paul.V)\
**Post date:** [August 8, 2017, 3:15am UTC](https://forums.percona.com/t/best-way-to-add-slave-to-the-xtradb-cluster/5795/1 "2017-08-08T03:15:30Z")

</div>

Hi guys!  
I have an 3 node percona xtradb 5.7 cluster, and, lets say, 3rd party wants to add one more Read-Only server, to play with it and not to influence the production cluster. But, as i saw in documentation, every cluster member acts like a master, so what is the best way to do this?  
Mb i can add one more node, and give the replication user permissions only for a read?  
Or it is possible to add common MySQL server as a slave to cluster somehow?