# Istio CNI Helm Chart

This chart installs the Istio CNI Plugin. See the [CNI installation guide](https://istio.io/latest/docs/setup/additional-setup/cni/)
for more information.

## Setup Repo Info

```console
helm repo add istio https://istio-release.storage.googleapis.com/charts
helm repo update
```

_See [helm repo](https://helm.sh/docs/helm/helm_repo/) for command documentation._

## Installing the Chart

```

2) `istio-cni` chart installs the CNI plugin. This should be installed after the `base` chart and prior to `istiod` chart. Need to add `--set pilot.cni.enabled=true` to the `istiod` install to enable its usage.

```console
helm install istio-cni -n kube-system manifests/charts/istio-cni --set profile=openshift
```

defaults:
  cni:
    hub: ""
    tag: ""
    variant: ""
    image: install-cni
    pullPolicy: ""

    # Configuration log level of istio-cni binary
    # by default istio-cni send all logs to UDS server
    # if want to see them you need change global.logging.level with cni:debug
    logLevel: debug

    # Configuration file to insert istio-cni plugin configuration
    # by default this will be the first file found in the cni-conf-dir

	"fmt"
	"os"
	"strings"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"

	"istio.io/istio/cni/pkg/config"
	"istio.io/istio/cni/pkg/constants"
	"istio.io/istio/cni/pkg/install"
	udsLog "istio.io/istio/cni/pkg/log"
	"istio.io/istio/cni/pkg/monitoring"
	"istio.io/istio/cni/pkg/nodeagent"
	"istio.io/istio/cni/pkg/repair"
	"istio.io/istio/pkg/cmd"
	"istio.io/istio/pkg/collateral"
	"istio.io/istio/pkg/ctrlz"

// This is a sample chained plugin that supports multiple CNI versions. It
// parses prevResult according to the cniVersion
package plugin

import (
	"context"
	"encoding/json"
	"fmt"
	"runtime/debug"
	"strconv"
	"time"

	"github.com/containernetworking/cni/pkg/skel"
	"github.com/containernetworking/cni/pkg/types"
	cniv1 "github.com/containernetworking/cni/pkg/types/100"
	"github.com/containernetworking/cni/pkg/version"

// limitations under the License.

// This is a sample chained plugin that supports multiple CNI versions. It
// parses prevResult according to the cniVersion
package main

import (
	"fmt"
	"os"

	"github.com/containernetworking/cni/pkg/skel"
	"github.com/containernetworking/cni/pkg/version"

	"istio.io/istio/cni/pkg/plugin"
	"istio.io/istio/pkg/log"
	istioversion "istio.io/istio/pkg/version"
)

# The OpenShift profile provides a basic set of settings to run Istio on OpenShift
# CNI must be installed.
cni:
  cniBinDir: /var/lib/cni/bin
  cniConfDir: /etc/cni/multus/net.d
  chained: false
  cniConfFileName: "istio-cni.conf"
  logLevel: info
  provider: "multus"
global:
  platform: openshift
pilot:
  cni:
    enabled: true
    provider: "multus"

  - apiGroups: [""]
    {{- /* pods/status is less privileged than the full pod, and either can label. So use the lower pods/status */}}
    resources: ["pods/status"]
    verbs: ["patch", "update"]
{{- end }}
{{- end }}
---
{{- if .Values.cni.ambient.enabled }}
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: istio-cni-ambient
  labels:
    app: istio-cni

meshConfig:
  defaultConfig:
    proxyMetadata:
      ISTIO_META_ENABLE_HBONE: "true"
global:
  platform: openshift
cni:
  ambient:
    enabled: true
  cniBinDir: /var/lib/cni/bin
  cniConfDir: /etc/cni/multus/net.d
  chained: false
  cniConfFileName: "istio-cni.conf"
  logLevel: info
  provider: "multus"
pilot:
  cni:
    enabled: true
    provider: "multus"
  variant: distroless
  env:
    PILOT_ENABLE_AMBIENT: "true"

meshConfig:
  defaultConfig:
    proxyMetadata:
      ISTIO_META_ENABLE_HBONE: "true"
global:
  platform: openshift
cni:
  ambient:
    enabled: true
  cniBinDir: /var/lib/cni/bin
  cniConfDir: /etc/cni/multus/net.d
  chained: false
  cniConfFileName: "istio-cni.conf"
  logLevel: info
  provider: "multus"
pilot:
  cni:
    enabled: true
    provider: "multus"
  variant: distroless
  env:
    PILOT_ENABLE_AMBIENT: "true"