# node or instance without data (for quorum)

**URL:** <https://forums.percona.com/t/node-or-instance-without-data-for-quorum/4587>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [December 10, 2015, 12:53am UTC](https://forums.percona.com/t/node-or-instance-without-data-for-quorum/4587 "2015-12-10T00:53:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sars](https://avatars.discourse-cdn.com/v4/letter/s/74df32/32.png) [@sars](https://forums.percona.com/u/sars)\
**Post date:** [December 10, 2015, 12:53am UTC](https://forums.percona.com/t/node-or-instance-without-data-for-quorum/4587/1 "2015-12-10T00:53:37Z")

</div>

I need to build 2 nodes of PXC between 2 data centers. In these 2 data centers, there is a public node (more important) and a private node (offline sometimes due to network issue). If there are only 2 nodes and when a node becoming offline, whole cluster will become unreachable.

In order to prevent split-brain, it should be better to build odd nodes. I want to build a extra node as a moderator to prevent this issue. But I could not build a full function node.

Is there any method to build a PXC node without data? Or any package could let a node represent only for quorum?

Thanks!