mishmash-operator

Mishmash Operator: http://mishmash.io

Image repository: https://quay.io/repository/kirils/mishmash-operator

Instalation

Clone with HTTPS https://github.com/kirils/mishmash-operator.git

Run as a Deployment inside the cluster:

$ kubectl create -f deploy/service_account.yaml
$ kubectl create -f deploy/role.yaml
$ kubectl create -f deploy/role_binding.yaml
$ kubectl create -f deploy/operator.yaml

Verify that the mishmash-operator is up and running:

$ kubectl get deployment
NAME                     DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
mishmash-operator       1         1         1            1           1m

Run locally outside the cluster

export OPERATOR_NAME=mishmash-operator

$ operator-sdk run local --watch-namespace=default
2020/06/07 22:15:30 Go Version: go1.10.2
2020/06/07 22:15:30 Go OS/Arch: darwin/amd64
2020/06/07 22:15:30 operator-sdk Version: 0.0.6+git
2020/06/07 22:15:30 Registering Components.
2020/06/07 22:15:30 Starting the Cmd.

Create a Mishmash CR

Create the example Mishmash CR that was generated at deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml:

$ cat deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml
apiVersion: "mishmash.io.com/v1alpha1"
kind: "Mishmash"
metadata:
  name: "example-mishmash"
spec:
  size: 3

$ kubectl apply -f deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml

Ensure that the mishmash-operator creates the deployment for the CR:

```bash
$ kubectl get deployment
NAME                     DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
mishmash-operator       1         1         1            1           2m
example-mishmash        3         3         3            3           1m

Check the pods and CR status to confirm the status is updated with the mishnash pod names:

$ kubectl get pods
NAME                                  READY     STATUS    RESTARTS   AGE
example-mishmash-6fd7c98d8-7dqdr     1/1       Running   0          1m
example-mishmash-6fd7c98d8-g5k7v     1/1       Running   0          1m
example-mishmash-6fd7c98d8-m7vn7     1/1       Running   0          1m
mishmash-operator-7cc7cfdf86-vvjqk   1/1       Running   0          2m

$ kubectl get mishmash/example-mishmash -o yaml
apiVersion: mishmash.io/v1alpha1
kind: Mishmash
metadata:
  clusterName: ""
  creationTimestamp: 2020-03-31T22:51:08Z
  generation: 0
  name: example-mishmash
  namespace: default
  resourceVersion: "245453"
  selfLink: /apis/mishmash.io/v1alpha1/namespaces/default/mishmashes/example-mishmash
  uid: 0026cc97-3536-11e8-bd83-0800274106a1
spec:
  size: 3
status:
  nodes:
  - example-mishmash-6fd7c98d8-7dqdr
  - example-mishmash-6fd7c98d8-g5k7v
  - example-mishmash-6fd7c98d8-m7vn7

Update the size

Change the spec.size field in the mishmash CR from 3 to 4 and apply the change:

$ cat deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml
apiVersion: "mishmash.io/v1alpha1"
kind: "Mishmash"
metadata:
  name: "example-mishmash"
spec:
  size: 4

$ kubectl apply -f deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml

Confirm that the operator changes the deployment size:

$ kubectl get deployment
NAME                 DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
example-mishmash    4         4         4            4           5m

Cleanup

Clean up the resources:

$ kubectl delete -f deploy/crds/mishmash.io_v1alpha1_mishmash_cr.yaml
$ kubectl delete -f deploy/operator.yaml
$ kubectl delete -f deploy/role_binding.yaml
$ kubectl delete -f deploy/role.yaml
$ kubectl delete -f deploy/service_account.yaml