### GKE notes

On GKE, 'kube-system' is required.

If using `helm template`, `--set cni.cniBinDir=/home/kubernetes/bin` is required - with `helm install`

  // can have their a new pod created before the old pod is marked as deleted.
  // The update starts by launching new pods on 30% of nodes. Once an updated
  // pod is available (Ready for at least minReadySeconds) the old DaemonSet pod
  // on that node is marked deleted. If the old pod becomes unavailable for any
  // reason (Ready transitions to false, is evicted, or is drained) an updated

# (2) in the VERSION file, in which we will append "-dev" to it
ifeq ($(VERSION),)
VERSION_FROM_FILE := $(shell cat VERSION)
ifeq ($(VERSION_FROM_FILE),)
$(error VERSION not detected. Make sure it's stored in the VERSION file or defined in VERSION variable)
endif
VERSION := $(VERSION_FROM_FILE)-dev
endif

export VERSION

# Base version of Istio image to use

  // can have their a new pod created before the old pod is marked as deleted.
  // The update starts by launching new pods on 30% of nodes. Once an updated
  // pod is available (Ready for at least minReadySeconds) the old DaemonSet pod
  // on that node is marked deleted. If the old pod becomes unavailable for any
  // reason (Ready transitions to false, is evicted, or is drained) an updated

  // node matched by this selector. The RuntimeClass nodeSelector is merged
  // with a pod's existing nodeSelector. Any conflicts will cause the pod to
  // be rejected in admission.
  // +optional
  // +mapType=atomic
  map<string, string> nodeSelector = 1;

  // tolerations are appended (excluding duplicates) to pods running with this

- ISTIO_META_DNS_CAPTURE env variable on the proxy - enables dns redirect
- INVALID_DROP env var on proxy - changes behavior from reset to drop in iptables
- auto excluded inbound ports: 15020, 15021, 15090

The code automatically detects the proxyUID and proxyGID from RunAsUser/RunAsGroup and exclude them from interception, defaulting to 1337

### Overview

- [istio-cni Helm chart](../manifests/charts/istio-cni/templates)

message UserInfo {
  // The name that uniquely identifies this user among all active users.
  // +optional
  optional string username = 1;

  // A unique value that identifies this user across time. If this user is
  // deleted and another user by the same name is added, they will have
  // different UIDs.
  // +optional
  optional string uid = 2;

  // The names of groups this user is a part of.
  // +optional

  // Subresource is one of the existing resource types.  "" means none.
  // +optional
  optional string subresource = 6;

  // Name is the name of the resource being requested for a "get" or deleted for a "delete". "" (empty) means all.
  // +optional
  optional string name = 7;
}

// ResourceRule is the list of actions the subject is allowed to perform on resources. The list ordering isn't significant,

  //
  // If PodSelector is also set, then the NetworkPolicyPeer as a whole selects
  // the Pods matching PodSelector in the Namespaces selected by NamespaceSelector.
  // Otherwise it selects all Pods in the Namespaces selected by NamespaceSelector.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 2;

  //
  // If podSelector is also set, then the NetworkPolicyPeer as a whole selects
  // the pods matching podSelector in the namespaces selected by namespaceSelector.
  // Otherwise it selects all pods in the namespaces selected by namespaceSelector.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector namespaceSelector = 2;