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NEW QUESTION # 30
Resolve group synchronization conflicts (prune stale data)
Task Information : Run group sync with pruning to remove stale OpenShift group memberships that no longer exist in LDAP.
Answer:
Explanation:
See the solution below in Explanation:
Explanation:
* Run group sync with prune controls
* oc adm groups sync --sync-config=groupsync.yaml --confirm --prune-whitelist=/tmp/whitelist.txt
* Prune removes stale memberships/groups, but whitelist protects selected groups from pruning.
* Verify group membership reflects LDAP
* oc describe group < groupname >
* Confirms removed users are no longer listed.
NEW QUESTION # 31
GitOps and MachineConfig - Trigger Argo CD Synchronization by Repository Update
Answer:
Explanation:
See the solution below in Explanation:
Explanation:
Step 1: Confirm that the repository being pushed to is the same repository watched by the GitOps/Argo CD application.
This linkage is essential because GitOps acts only on configured source repositories and paths.
Step 2: Commit the MachineConfig changes.
The lab uses:
git commit -am "Add MachineConfig for motd"
Step 3: Push the changes to the tracked branch.
The lab uses:
git push origin main
Step 4: Allow Argo CD to detect the repository change and begin synchronization.
In a standard GitOps model, the controller compares the Git repository to the cluster state and applies drift correction or new desired resources.
Detailed explanation:
This sub Task SIMULATION is the operational purpose behind the previous Git command Task SIMULATION . The point is not merely to store a file in Git; it is to update the declarative source that Argo CD uses to reconcile the cluster. Once the repository is updated, Argo CD detects the new commit and syncs the MachineConfig into the cluster according to its application definition. This demonstrates a core automation principle in OpenShift GitOps: administrators do not treat the cluster as the primary editable surface. Instead, they modify Git and let the automation layer enforce state. That provides traceability, peer review potential, rollback capability, and consistency across environments.
NEW QUESTION # 32
Configure resiliency using a PodDisruptionBudget
Task Information : Ensure at least 2 replicas of payments/api remain available during voluntary disruptions.
Answer:
Explanation:
See the solution below in Explanation:
Explanation:
* Create PDB
* cat < < EOF | oc -n payments apply -f -
* apiVersion: policy/v1
* kind: PodDisruptionBudget
* metadata:
* name: api-pdb
* spec:
* minAvailable: 2
* selector:
* matchLabels:
* app: api
* EOF
* minAvailable: 2 blocks evictions that would reduce availability below 2.
* Verify PDB
* oc -n payments get pdb
* oc -n payments describe pdb api-pdb
NEW QUESTION # 33
Integrate OpenShift with Keycloak (OIDC)
Task Information : Add a Keycloak (RH SSO) OpenID Connect identity provider to OpenShift OAuth and verify redirect/login works.
Answer:
Explanation:
See the solution below in Explanation:
Explanation:
* Collect Keycloak details
* Issuer URL (realm), client ID, and client secret.
* Confirm Keycloak client has correct redirect URI for OpenShift OAuth callback.
* Create a secret with the OIDC client secret
* oc -n openshift-config create secret generic keycloak-oidc-secret \
* --from-literal=clientSecret=' < SECRET > '
* OAuth reads the OIDC client secret from this secret.
* Edit OAuth and add OpenID provider
* oc edit oauth cluster
Add under spec.identityProviders:
- name: keycloak
mappingMethod: claim
type: OpenID
openID:
issuer: "https://keycloak.example.com/realms/ocp"
clientID: "openshift"
clientSecret:
name: keycloak-oidc-secret
claims:
preferredUsername: ["preferred_username"]
name: ["name"]
email: ["email"]
* issuer must match Keycloak realm issuer URL.
* claims determines which token claims map to OpenShift username/name/email.
* Restart OAuth pods
* oc -n openshift-authentication delete pod -l app=oauth-openshift
* Verify by logging in through the web console
* You should be redirected to Keycloak, authenticate, then return to OpenShift.
* Confirm users/identities:
* oc get users
* oc get identities
NEW QUESTION # 34
Configure RBAC roles with users and groups
Task Information : Grant edit to group dev-team in namespace payments, and grant view to user auditor1.
Answer:
Explanation:
See the solution below in Explanation:
Explanation:
* Create (or switch to) the project
* oc new-project payments
* Namespace must exist before applying rolebindings.
* Grant edit to the group
* oc -n payments policy add-role-to-group edit dev-team
* Members of dev-team can modify most resources in payments.
* Grant view to a user
* oc -n payments policy add-role-to-user view auditor1
* auditor1 can read resources but not change them.
* Verify rolebindings
* oc -n payments get rolebinding
NEW QUESTION # 35
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