Managing Operators

Question 1

Check the list of available operators

Answer 1

oc get packagemanifests

Question 2

Inspect an operator

Answer 2

oc describe packagemanifests file-integrity-operator

Question 3

Get an operator version

Answer 3

oc get packagemanifests file-integrity-operator
–output=’jsonpath={range .status.channels[*]}{.name}{“\n”}{end}’

Question 4

get list of installed operators across namespaces

Answer 4

oc get csv -A

Question 5

list the operators managed by the OLM

Answer 5

oc get subs -A

Question 6

Namespace CR for operator creation

Answer 6

Question 7

Operators that are installed using the OLM require a group that matches the namespace name. True or False?

Answer 7

True

Question 8

CR to create a group for the operator

Answer 8

Question 9

CR to create an operator sub

Answer 9

Question 10

Steps to create an operator

Answer 10

1) Create namespace with: openshift.io/cluster-monitoring: “true”
2) Create an operator group
3) Create a subscription object

Question 11

Check the logs of the OLM pod to verify operator installation

Answer 11

oc logs pod/olm-operator-c5599dfd7-nknfx \
-n openshift-operator-lifecycle-manager

Question 12

Inspect the subscription object to verify the operator status

Answer 12

oc describe sub <subscription-name> -n <namespace></namespace></subscription-name>

Question 13

Deleting Operator

Answer 13

1) oc delete sub <subscription-name>
2) oc get sub <subscription-name> -o yaml | grep currentCSV
3) oc delete csv <currentCSV></currentCSV></subscription-name></subscription-name>

Question 14

view events and logs of an operator

Answer 14

oc logs deployment.apps/file-integrity-operator

Question 15

get all objects related to an operator

Answer 15

oc get all -n openshift-file-integrity

Question 16

view the status and events from custom resources related to a given operator

Answer 16

1) oc describe deployment.apps/file-integrity-operator | \
grep -i kind
2) oc get crd | grep -i fileintegrity

Question 17

list the cluster operators and their status

Answer 17

oc get clusteroperator

Question 18

Extract the release of a cluster operator

Answer 18

1) VER=”$(oc get clusterversion version -o jsonpath=’{.status.desired.image}’)”

2) oc adm release extract –from=$VER –to=release-image
3) less release-image/samples06-operator.yaml

Question 19

List the Cluster Samples Operator pods

Answer 19

oc get pods -n openshift-cluster-samples-operator

Question 20

View logs for the Cluster Samples Operator pods.

Answer 20

oc logs pod/cluster-samples-operator-5d7d5b94b6-rw284 -n openshift-cluster-samples-operator –all-containers