Proof of concept that simulates a Kubernetes API for Nodepool. This only support pods listing, minimal creation, exec and destruction. The api feature a custom (very limited) SPDY cherrypy tool to handle the go-client exec api machinery.
pip3 install --user cherrypy routes PYTHONPATH=$(pwd) python3 k1s/api.py
$ cat<<EOF>kubeconfig
apiVersion: v1
clusters:
- cluster:
server: http://localhost:9023
name: k1s
contexts:
- context:
cluster: k1s
user: admin/k1s
name: /k1s/admin
current-context: /k1s/admin
kind: Config
preferences: {}
users:
- name: admin/k1s
user:
token: secret
EOF
export KUBECONFIG=$(pwd)/kubeconfig
$ oc apply -f - << EOF
apiVersion: v1
kind: Pod
metadata:
name: fedora-000042
spec:
containers:
- image: registry.fedoraproject.org/fedora:30
EOF
$ oc get pods
NAME READY STATUS RESTARTS AGE
fedora-000042 1/1 Running 0 3s
$ oc exec fedora-000042 id
uid=0(root) gid=0(root) groups=0(root)
cat<<EOF>inventory
[all]
fedora-000042 ansible_connection=kubectl
EOF
cat<<EOF>pod.yaml
- hosts: all
tasks:
- command: ls
EOF
$ ansible-playbook -i inventory pod.yaml
PLAY [all] **************************************************
TASK [Gathering Facts] **************************************
ok: [fedora-000042]
TASK [command] **********************************************
changed: [fedora-000042]
PLAY RECAP **************************************************
fedora-000042: ok=2 changed=1 unreachable=0 failed=0