I have been meaning to automate my deployment directly from my small python application without having to use the openshift client (oc) directly.
OpenShift use a REST API and the oc client uses it to communicate with the server, you can actually see all the REST operation the oc client is doing if you specify the –loglevel=7 (it goes to 10 to get even more debug info) :
$ oc --loglevel=7 get pod 2>&1 |head -10 I0919 09:59:20.047350 77328 loader.go:329] Config loaded from file /Users/chmouel/.kube/config I0919 09:59:20.048149 77328 round_trippers.go:296] GET https://openshift:8443/oapi I0919 09:59:20.048158 77328 round_trippers.go:303] Request Headers: I0919 09:59:20.048162 77328 round_trippers.go:306] User-Agent: oc/v1.4.0 (darwin/amd64) openshift/85eb37b I0919 09:59:20.048175 77328 round_trippers.go:306] Authorization: Bearer FOOBAR I0919 09:59:20.048180 77328 round_trippers.go:306] Accept: application/json, */* I0919 09:59:20.095239 77328 round_trippers.go:321] Response Status: 200 OK in 47 milliseconds I0919 09:59:20.096056 77328 round_trippers.go:296] GET https://openshift:8443/version I0919 09:59:20.096078 77328 round_trippers.go:303] Request Headers: I0919 09:59:20.096084 77328 round_trippers.go:306] User-Agent: oc/v1.4.0 (darwin/amd64) openshift/85eb37b
I was thinking to come up with my own python rest wrapper since a google quick search didn’t come up with any binding. But since openshift is build on kubernetes and fully compatible with it (i.e: no fork or changes that make it incompatible) it was as easy as using the tools provided for kube.
The first project coming up on the google search is pykube and it’s easily installable with pip.
You need to provide a kubeconfig that was already setup (with username/passwd) or already identified if it’s token based (i.e: oauth, oid etc) and you can use this example like this :
import pykube api = pykube.HTTPClient(pykube.KubeConfig.from_file("/Users/chmouel/.kube/config")) pods = pykube.Pod.objects(api).filter(namespace="test") for x in pods: print(x)
see the documentation of pykub on its website