// for updates. During a rolling update, all pods from ordinal Replicas-1 to
  // Partition are updated. All pods from ordinal Partition-1 to 0 remain untouched.
  // This is helpful in being able to do a canary based deployment. The default value is 0.
  // +optional
  optional int32 partition = 1;

  // The maximum number of pods that can be unavailable during the update.

  // only if the traffic matches at least one port in the list.
  // +optional
  repeated NetworkPolicyPort ports = 1;

  // List of sources which should be able to access the pods selected for this rule.
  // Items in this list are combined using a logical OR operation.
  // If this field is empty or missing, this rule matches all sources (traffic not restricted by source).

Installations from other installation methods (such as istioctl, Istio Operator, other helm charts, etc) can be migrated to use the new Helm charts
following the guidance below.
If you are able to, a clean installation is simpler. However, this often requires an external IP migration which can be challenging.

   distributions of the Covered Software under this License. Except to the
   extent prohibited by statute or regulation, such description must be
   sufficiently detailed for a recipient of ordinary skill to be able to
   understand it.

5. Termination

5.1. The rights granted under this License will terminate automatically if You
     fail to comply with any of its terms. However, if You become compliant,

  // DisruptionAllowed condition. The following are known values for the reason field
  // (additional reasons could be added in the future):
  // - SyncFailed: The controller encountered an error and wasn't able to compute
  //               the number of allowed disruptions. Therefore no disruptions are
  //               allowed and the status of the condition will be False.

  // for updates. During a rolling update, all pods from ordinal Replicas-1 to
  // Partition are updated. All pods from ordinal Partition-1 to 0 remain untouched.
  // This is helpful in being able to do a canary based deployment. The default value is 0.
  optional int32 partition = 1;

  // maxUnavailable is the maximum number of pods that can be unavailable during the update.