# Is it possible to deploy pxc on one single node?

**URL:** <https://forums.percona.com/t/is-it-possible-to-deploy-pxc-on-one-single-node/11852>\
**Category:** Percona Operator for MySQL\
**Created:** [August 20, 2021, 10:37am UTC](https://forums.percona.com/t/is-it-possible-to-deploy-pxc-on-one-single-node/11852 "2021-08-20T10:37:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![krobe7](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/krobe7/32/4268_2.png) [@krobe7](https://forums.percona.com/u/krobe7)\
**Post date:** [August 20, 2021, 10:37am UTC](https://forums.percona.com/t/is-it-possible-to-deploy-pxc-on-one-single-node/11852/1 "2021-08-20T10:37:58Z")

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Hi, due to some business reasons, I want to deploy pxc on both three nodes and one single node env. I have already deployed pxc successfully on three nodes. However, when I want to scale down the pxc replica to 1, it keeps scaling back to 3 (I have already modified pxc size to 1 in cr.yaml). So I am wondering is the minimal nodes have to be 3 or is there anything I forgot to modify? Thanks.

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**Author:** ![vadimtk](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/vadimtk/32/9528_2.png) [@vadimtk](https://forums.percona.com/u/vadimtk)\
**Post date:** [August 20, 2021, 12:14pm UTC](https://forums.percona.com/t/is-it-possible-to-deploy-pxc-on-one-single-node/11852/2 "2021-08-20T12:14:16Z")

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Please try to set  
allowUnsafeConfigurations: true

> <https://github.com/percona/percona-xtradb-cluster-operator/blob/main/deploy/cr.yaml#L28>

1 node is not recommended size to run Percona XtraDB Cluster.