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OpenShift Usage Hints

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awalkaradi95moc edited this page Jul 25, 2017 · 8 revisions

This page lists a few hints as to how to do things using open shift.

To run the containers as root (useful for debugging, not useful for running in production):

Edit the dc/
```
spec:containers:securityContext:privileged:true
```
rollout the pod:
```
 oc rollout latest <dc>
```
or press the deploy option (in the OpenShift GUI).
To run a pod on specific node/nodes, add that/those node/nodes into a new region.

Edit the dc/
```
spec:nodeSelector:region: <region name>      
```
rollout the pod:
```
 oc rollout latest <dc>
```
or press the deploy option (in the OpenShift GUI).
Using Host Volumes

Host directory denotes the host address on which the pod is running, in our case- the Node. For pods to share data, mount the directory using host directories. Also, they should be on the same node to access the volume. You also need elevated privileges for accessing host directories.
```
 oc volume dc/<dc-name> --add --mount-path=<directory address on the pod> --path==<directory address on the node> 
```