148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 8 ■ Using Rolling Updates
We need to find which deployment revision does not have an error and subsequently roll back to that
revision. The details of a revision can be displayed. For example, the following command lists the detail of
revision 4:
kubectl rollout history deployment/mysql-deployment --revision=4
The details of revision 4 are listed as shown in Figure 8-34.
Figure 8-34. Listing the details of revision 4
To roll back to the previous version, run the following command, assuming the rollbackTo->revision
field is set to 0 (also the default) in the deployment definition file:
kubectl rollout undo deployment/mysql-deployment
Deployment is rolled back as shown in Figure 8-35. List the pods, and you may see some of the pods still
not running, which indicates that the revision rolled back to has errors.
196