ROX-21530: Cert Expiry Dashboard

[aaa5kameric]

Description

There are 2 steps prior to this PR:
First step was to Implement monitoring for certificate expiration, tracking and managing of digital certificates expiration dates. Certificate Monitoring PR: ROX-21530-certificate-monitoring , extracts timestamps from certificates and exposes metrics to Prometheus.

The second step was the Alerting part. Certificate Alerting PR: ROX-21530-certificate-alerting depends on the monitoring phase for timestamp exposing and extraction. So, External dependencies: adding/extracting the metrics : ROX-21530-certificate-monitoring . In the alerting phase, we defined prometheus rules and tests (RHACSFleetschardCertificateExpiring.yaml) for timestamps expiring on:

WARNING: <= 7 days RHACSFleetshardCertificateExpiringSoon

CRITICAL: <=1 day RHACSFleetshardCertificateExpiringCritical

Lastly, the Certificate Expiry Table-Dashboard was created using Grafana called Certificates Expiry. From the prometheus metric: acs_fleetshard_certificate_expiration_timestamp. This table is located in the RHACS Dataplane - Cluster Metrics section.

Jira Ticket: https://issues.redhat.com/browse/ROX-21530

Dashboard Screenshots:

Link to draft dashboard:https://grafana-route-rhacs-observability.apps.acs-int-us-01.isbr.p1.openshiftapps.com/d/ae1jamsury800e/rhacs-dataplane-cluster-metrics-copy-amina-copy?orgId=1&from=1730045176177&to=1730131576177&viewPanel=148

[ludydoo]

Minor change to integrate with the Central instance filter

[stehessel]

Could you please move the new widget to the bottom of the page? Right now it seems to be on top of the dashboard. I would also make the table bigger like the other tables. Also the table shows like this to me

[stehessel]

Some more suggestions:

• Sort the table such that certs that will expire soonest are at the top.
• Add Organization column to table.
• Make Expiration the second column after Namespace, then Organization, then the rest.

[ludydoo]

@aaa5kameric can you add new screenshots?

[aaa5kameric]

/retest

[ludydoo]

@stehessel can you re-review 🙏