Add instructions how to change IP of cluster

.gitlab/issue_templates/new_app.md

@@ -11,6 +11,10 @@
 * [ ] Add app to `docs/installation_instructions.md`
 * [ ] Add app to `docs/testing_instructions.md`
 
+## Etc
+
+* [ ] Add should use a PV `existingClaim`
+
 ## Tests
 
 * [ ] Add behave feature (`tests/behave/feature`)

docs/maintenance.md

@@ -106,3 +106,12 @@ backup the whole `/var/lib/OpenAppStack/` directory.
 
 Restore instructions will follow, please [reach out to us](https://openappstack.net/contact.html)
 if you need assistance.
+
+
+## Change the IP of your cluster
+
+* `rke etcd snapshot-save --config /var/lib/OpenAppStack/rke/cluster.yml --name test`
+* Change IP in `/var/lib/OpenAppStack/rke/cluster.yml`
+* `/usr/local/bin/rke up --config=/var/lib/OpenAppStack/rke/cluster.yml`
+* `rke etcd snapshot-restore --config /var/lib/OpenAppStack/rke/cluster.yml --name test`
+* `/usr/local/bin/rke up --config=/var/lib/OpenAppStack/rke/cluster.yml`