# External Services
**URL:** https://forums.suse.com/t/external-services/7689
**Category:** General
**Created:** [October 31, 2017, 2:01am UTC](https://forums.suse.com/t/external-services/7689 "2017-10-31T02:01:13Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mastermindg](https://forums.suse.com/u/mastermindg)
#### Post date: [October 31, 2017, 2:01am UTC](https://forums.suse.com/t/external-services/7689/1 "2017-10-31T02:01:13Z")
I’m new to Rancher and I’m trying to setup an internal Galera cluster for use by Rancher using this tutorial:
> **[Galera Cluster for Rancher](https://octoperf.com/blog/2016/11/17/rancher-galera-cluster/)**
>
> Step by step guide to install a MariaDB Galera Cluster for Rancher.
I’ve modified the files here:
>
>
> //github.com/rancher/catalog-dockerfiles/tree/master/galera/0.2.0
with:
> external\_ips:
> - 192.168.1.231
>
> expose:
>
> - 3308:3307/tcp
> tty: true
> image: rancher/external-service
But when I try to connect to .231 with the client it fails to connect. If I use the original files I can connect to the cluster IP (10…) fine.
How do I expose the Galera cluster externally?
---
### Author:  [@bpbp-boop](https://forums.suse.com/u/bpbp-boop)
#### Post date: [October 31, 2017, 3:21am UTC](https://forums.suse.com/t/external-services/7689/2 "2017-10-31T03:21:24Z")
External services are for your containers to access services _outside_ of rancher. For example, you might run MySQL on a conventional VM and have your containers connect to it. See here:
[http://rancher.com/docs/rancher/latest/en/cattle/adding-external-services/](http://rancher.com/docs/rancher/latest/en/cattle/adding-external-services/)
Rancher exposes 3306/3307 on the galera-lb container. Check what host it is running on and you can use that IP to connect.
---
### Author:  [@mastermindg](https://forums.suse.com/u/mastermindg)
#### Post date: [October 31, 2017, 5:22am UTC](https://forums.suse.com/t/external-services/7689/3 "2017-10-31T05:22:46Z")
The yaml is set for 3308. I’ve tried connecting on that port. Should I be connecting to a different port?
---
### Author:  [@mastermindg](https://forums.suse.com/u/mastermindg)
#### Post date: [November 1, 2017, 10:32am UTC](https://forums.suse.com/t/external-services/7689/4 "2017-11-01T10:32:07Z")
I ended up creating the service and load-balancer in the UI and exporting the config.