2023-01-24: Update kube-prometheus-stack to v44 (staging)

Production Change

Change Summary

Update kube-prometheus-stack from v42 to v43 in staging

Change Details

1. Services Impacted - ServicePrometheus
2. Change Technician - @sarahwalker
3. Change Reviewer - @cindy
4. Time tracking - 30 minutes
5. Downtime Component - none

Detailed steps for the change

Change Steps - steps to take to execute the change

Estimated Time to Complete (mins) - Estimated Time to Complete in Minutes

• Set label changein-progress /label ~"change::in-progress"
• glsh kube use-cluster gstg{,-us-east1-b,-us-east1-c,-us-east1-d} (and stgsub)
• Manually update the CRDs from v43-v44 release notes:

kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagerconfigs.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagers.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_podmonitors.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_probes.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_prometheuses.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_prometheusrules.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_servicemonitors.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.62.0/example/prometheus-operator-crd/monitoring.coreos.com_thanosrulers.yaml

• Merge gitlab-com/gl-infra/k8s-workloads/gitlab-helmfiles!1544 (merged)
• Set label changecomplete /label ~change::complete

Rollback

Rollback steps - steps to be taken in the event of a need to rollback this change

Estimated Time to Complete (mins) - Estimated Time to Complete in Minutes

• Revert gitlab-com/gl-infra/k8s-workloads/gitlab-helmfiles!1544 (merged)
• Revert the CRDs upgrade:

kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagerconfigs.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagers.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_podmonitors.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_probes.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_prometheuses.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_prometheusrules.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_servicemonitors.yaml
kubectl apply --server-side -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.61.1/example/prometheus-operator-crd/monitoring.coreos.com_thanosrulers.yaml

• Merge revert
• Set label changeaborted /label ~change::aborted
• [ ]

Monitoring

Key metrics to observe

• Metric: Metric Name
  • Location: Dashboard URL
  • What changes to this metric should prompt a rollback: Describe Changes

Change Reviewer checklist

C4 C3 C2 C1:

• Check if the following applies:
  • The scheduled day and time of execution of the change is appropriate.
  • The change plan is technically accurate.
  • The change plan includes estimated timing values based on previous testing.
  • The change plan includes a viable rollback plan.
  • The specified metrics/monitoring dashboards provide sufficient visibility for the change.

C2 C1:

• Check if the following applies:
  • The complexity of the plan is appropriate for the corresponding risk of the change. (i.e. the plan contains clear details).
  • The change plan includes success measures for all steps/milestones during the execution.
  • The change adequately minimizes risk within the environment/service.
  • The performance implications of executing the change are well-understood and documented.
  • The specified metrics/monitoring dashboards provide sufficient visibility for the change.
    • If not, is it possible (or necessary) to make changes to observability platforms for added visibility?
  • The change has a primary and secondary SRE with knowledge of the details available during the change window.
  • The labels blocks deployments and/or blocks feature-flags are applied as necessary

Change Technician checklist

• Check if all items below are complete:
  • The change plan is technically accurate.
  • This Change Issue is linked to the appropriate Issue and/or Epic
  • Change has been tested in staging and results noted in a comment on this issue.
  • A dry-run has been conducted and results noted in a comment on this issue.
  • The change execution window respects the Production Change Lock periods.
  • For C1 and C2 change issues, the change event is added to the GitLab Production calendar.
  • For C1 and C2 change issues, the SRE on-call has been informed prior to change being rolled out. (In #production channel, mention @sre-oncall and this issue and await their acknowledgement.)
  • For C1 and C2 change issues, the SRE on-call provided approval with the eoc_approved label on the issue.
  • For C1 and C2 change issues, the Infrastructure Manager provided approval with the manager_approved label on the issue.
  • Release managers have been informed (If needed! Cases include DB change) prior to change being rolled out. (In #production channel, mention @release-managers and this issue and await their acknowledgment.)
  • There are currently no active incidents that are severity1 or severity2
  • If the change involves doing maintenance on a database host, an appropriate silence targeting the host(s) should be added for the duration of the change.