Yash Verma / Cloud runbook

Roll back a bad release

A deployment went out and errors or latency went up. All playbooks.

Confirm it is the release: compare the error rate before and after the deploy time.
PromQL: HTTP error rate

Calculates the percentage of 5xx responses over the last 5 minutes.
```
sum(rate(http_requests_total{status=~"5.."}[5m])) / sum(rate(http_requests_total[5m])) * 100
```
promql, errors, sre
For a plain Deployment, list the revisions.
View rollout history

Checks the revision history of a deployment.
```
kubectl rollout history deployment/<deployment-name>
```
rollout, history
Go back to the previous revision.
Rollback a deployment

Rolls back a deployment to the previous revision.
```
kubectl rollout undo deployment/<deployment-name>
```
rollback, undo, deployment
Wait until the rollback has finished.
Watch a rollout until it finishes

Waits for a deployment rollout and exits non-zero if it fails.
```
kubectl rollout status deployment/<deployment-name> -n <namespace>
```
rollout, deploy
For a Helm release, list its revisions instead.
View release history

Shows the revision history and status of a Helm release.
```
helm history <release-name>
```
helm, history, revisions
Roll back to the last good revision.
Rollback a release

Rolls back a Helm deployment to a specific prior revision.
```
helm rollback <release-name> <revision-number>
```
helm, rollback, revert