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add documentation

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Jesse Haka 2019-03-22 18:50:45 +02:00
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@ -66,6 +66,49 @@ kops delete cluster my-cluster.k8s.local --yes
* `--os-dns-servers=8.8.8.8,8.8.4.4` You can define dns servers to be used in your cluster if your openstack setup does not have working dnssetup by default
# Compute and volume zone names does not match
Some of the openstack users do not have compute zones named exactly the same than volume zones. Good example is that there are several compute zones for instance `zone-1`, `zone-2` and `zone-3`. Then there is only one volumezone which is usually called `nova`. By default this is problem in kops, because kops assumes that if you are deploying things to `zone-1` there should be compute and volume zone called `zone-1`.
However, you can still get kops working in your openstack by doing following:
**Create cluster using your compute zones**
```
kops create cluster \
...
--zones zone-1,zone-2,zone-3 \
...
```
**After you have initialized the configuration you need to edit configuration**
```
kops edit cluster my-cluster.k8s.local
```
Edit `ignore-volume-az` to `true` and `override-volume-az` according to your cinder az name.
Example (volume zone is called `nova`):
```
spec:
...
cloudConfig:
openstack:
blockStorage:
ignore-volume-az: true
override-volume-az: nova
...
```
**Finally execute update cluster**
```
kops update cluster my-cluster.k8s.local --state ${KOPS_STATE_STORE} --yes
```
Kops should create instances to all three zones, but provision volumes from the same zone.
# Using external cloud controller manager
If you want use [External CCM](https://github.com/kubernetes/cloud-provider-openstack) in your installation, this section contains instructions what you should do to get it up and running.