// the list automatically by PodDisruptionBudget controller after some time.
  // If everything goes smooth this map should be empty for the most of the time.
  // Large number of entries in the map may indicate problems with pod deletions.
  // +optional
  map<string, k8s.io.apimachinery.pkg.apis.meta.v1.Time> disruptedPods = 2;

  // Number of pod disruptions that are currently allowed.
  optional int32 disruptionsAllowed = 3;

iptables -t nat -N ISTIO_POSTRT
iptables -t nat -A POSTROUTING -j ISTIO_POSTRT

  // +optional
  map<string, string> auditAnnotations = 6;

  // warnings is a list of warning messages to return to the requesting API client.
  // Warning messages describe a problem the client making the API request should correct or be aware of.
  // Limit warnings to 120 characters if possible.
  // Warnings over 256 characters and large numbers of warnings may be truncated.
  // +optional

- [resources](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#resource-requests-and-limits-of-pod-and-container)
- [readiness probes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/)
- [replica count](https://kubernetes.io/docs/concepts/workloads/controllers/deployment/)

iptables -t nat -A ISTIO_POSTRT -m owner --socket-exists -p tcp -m set --match-set istio-inpod-probes-v4 dst -j SNAT --to-source 169.254.7.127
ip6tables -t nat -N ISTIO_POSTRT
ip6tables -t nat -A POSTROUTING -j ISTIO_POSTRT

  optional int32 port = 1;

  // protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // error is to record the problem with the service port
  // The format of the error shall comply with the following rules:
  // - built-in error values shall be specified in this file and those shall use
  //   CamelCase names

  optional int32 port = 1;

  // protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // error is to record the problem with the service port
  // The format of the error shall comply with the following rules:
  // - built-in error values shall be specified in this file and those shall use
  //   CamelCase names

  // +patchStrategy=merge
  // +optional
  repeated VolumeDevice volumeDevices = 21;

  // Probes are not allowed for ephemeral containers.
  // +optional
  optional Probe livenessProbe = 10;

  // Probes are not allowed for ephemeral containers.
  // +optional
  optional Probe readinessProbe = 11;

  // Probes are not allowed for ephemeral containers.
  // +optional
  optional Probe startupProbe = 22;

  // +optional
  map<string, string> auditAnnotations = 6;

  // warnings is a list of warning messages to return to the requesting API client.
  // Warning messages describe a problem the client making the API request should correct or be aware of.
  // Limit warnings to 120 characters if possible.
  // Warnings over 256 characters and large numbers of warnings may be truncated.
  // +optional

  optional int32 port = 1;

  // Protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // Error is to record the problem with the service port
  // The format of the error shall comply with the following rules:
  // - built-in error values shall be specified in this file and those shall use
  //   CamelCase names