apiVersion: release-notes/v2
kind: feature
area: installation
releaseNotes:
- |

      imageChangeParams:
        automatic: true
        containerNames:
          - "helloworld"
        from:
          kind: "ImageStreamTag"
          name: "hello-go-gke:1.0"
  strategy:
    type: "Rolling"
  paused: false
  revisionHistoryLimit: 2

            automatic: true
            containerNames:
              - "helloworld"
            from:
              kind: "ImageStreamTag"
              name: "hello-go-gke:1.0"
      strategy:
        type: "Rolling"
      paused: false
      revisionHistoryLimit: 2

      imageChangeParams:
        automatic: true
        containerNames:
          - "helloworld"
        from:
          kind: "ImageStreamTag"
          name: "hello-go-gke:1.0"
  strategy:
    type: "Rolling"
  paused: false
  revisionHistoryLimit: 2

	performedRollback := false
	if !deploymentutil.EqualIgnoreHash(&d.Spec.Template, &rs.Spec.Template) {
		logger.V(4).Info("Rolling back deployment to old template spec", "deployment", klog.KObj(d), "templateSpec", rs.Spec.Template.Spec)
		deploymentutil.SetFromReplicaSetTemplate(d, rs.Spec.Template)
		// set RS (the old RS we'll rolling back to) annotations back to the deployment;

			}
		}
	}
}

// SetDefaults_Deployment sets additional defaults compared to its counterpart
// in extensions. These addons are:
// - MaxUnavailable during rolling update set to 25% (1 in extensions)
// - MaxSurge value during rolling update set to 25% (1 in extensions)
// - RevisionHistoryLimit set to 2 (not set in extensions)
// - ProgressDeadlineSeconds set to 600s (not set in extensions)

	return RegisterDefaults(scheme)
}

// SetDefaults_Deployment sets additional defaults compared to its counterpart
// in extensions. These addons are:
// - MaxUnavailable during rolling update set to 25% (1 in extensions)
// - MaxSurge value during rolling update set to 25% (1 in extensions)
// - RevisionHistoryLimit set to 10 (not set in extensions)
// - ProgressDeadlineSeconds set to 600s (not set in extensions)

	}
}

// SetDefaults_Deployment sets additional defaults compared to its counterpart
// in extensions. These addons are:
// - MaxUnavailable during rolling update set to 25% (1 in extensions)
// - MaxSurge value during rolling update set to 25% (1 in extensions)
// - RevisionHistoryLimit set to 10 (not set in extensions)
// - ProgressDeadlineSeconds set to 600s (not set in extensions)

			current, err = m.minorVersionUpgrade(current, stepVersion)
		case current.version.Major == 3 && target.version.Major == 3 && current.version.Minor > target.version.Minor:
			klog.Infof("rolling etcd back from %s to %s", current, target)
			current, err = m.rollbackEtcd3MinorVersion(current, target)
		}
		if err != nil {
			return err
		}
	}
}

    to trigger a re-injection.

    In Istio 1.18, this has changed to create a fully rendered Deployment and no longer rely on injection.
    As a result, *Gateways will be updated, via a rolling restart, when their revision changes*.

    Additionally, users using this feature must update their control plane to Istio 1.16.5+ or 1.17.3+ before adopting Istio 1.18.