使用 Helm Chart 部署及卸载 istio

部署 istio

1.添加 istio 官方的 helm 仓库

helm repo add istio   https://storage.googleapis.com/istio-release/releases/1.3.3/charts/

2.是否添加成功

helm search repo istio

name chart version app version description
istio/istio 1.3.3 1.3.3 helm chart for all istio components
istio/istio-cni 1.3.3 1.3.3 helm chart for istio-cni components
istio/istio-init 1.3.3 1.3.3 helm chart to initialize istio crds

3.创建 istio-system 命名空间

kubectl create ns istio-system

4.创建 istio 所需的 crd 文件

helm install istio-init istio/istio-init -n istio-system

5.检查 crd 文件是否创建完成，输出为23

kubectl get crds | grep 'istio.io' | wc -l

23

6.部署 istio

helm install istio istio/istio -n istio-system

name: istio
last deployed: thu oct 24 12:05:06 2019
namespace: istio-system
status: deployed
revision: 1
notes:
thank you for installing istio.

your release is named istio.

to get started running application with istio, execute the following steps:

1. label namespace that application object will be deployed to by the following command (take default namespace as an example)

kubectl label namespace default istio-injection=enabled
​ kubectl get namespace -l istio-injection

1. deploy your applications

$ kubectl apply -f .yaml

for more information on running istio, visit:

卸载 istio

1.卸载 istio

helm -n istio-system uninstall istio

2.删除 istio crd 文件

helm -n istio-system uninstall istio-init

kubectl delete crd `kubectl get crd | grep istio| awk '{print $1}'`

一键部署及卸载 istio 的脚本

部署脚本

#!/bin/bash

# add istio official repo
add_repo(){
  version=$1
  repo="https://storage.googleapis.com/istio-release/releases/${version}/charts/"
  helm repo add istio $repo

  status_cmd=`echo $?`
  check_repo_cmd=`helm repo list | grep $repo | wc -l`
  echo "$status_cmd"
  echo "$check_repo_cmd"
  while [[ $status_cmd != 0 && $check_repo_cmd -ge 1 ]]
  do
    sleep 5
    helm repo add istio $repo

    status_cmd=`echo $?`
    check_repo_cmd=`helm repo list | grep $repo | wc -l`
  done
}

# create istio-system namespace
create_namespace() {
  namespace=$1
  kubectl create ns ${namespace}

  status_cmd=`echo $?`
  while [[ $status_cmd != 0 ]]
  do
    sleep 5
    kubectl create ns ${namespace}
    status_cmd=`echo $?`
  done
}

# create crd need for istio
create_crd() {
  namespace=$1
  helm install istio-init istio/istio-init -n ${namespace}
  crd_count=`kubectl get crds | grep 'istio.i' | wc -l`

  while [[ ${crd_count} != 23 ]]
  do
    sleep 5
    crd_count=`kubectl get crds | grep 'istio.io' | wc -l`
  done

  echo 'istio crd create successful'
}

# deploy istio related components
deploy_istio() {
  namespace=$1
  version=$2
  helm install istio istio/istio -n ${namespace}

  check() {
     kubectl -n ${namespace}  get deploy | grep istio | awk '{print "deployment/"$1}' | while read line ;
     do
       kubectl rollout status $line -n ${namespace};
     done
  }
  check

  echo "istio is deployed successful"
}

main(){
  istio_version="1.3.3"
  istio_namespace="istio-system"
  add_repo $istio_version
  if [[ `kubectl get ns | grep $istio_namespace | wc -l ` == 0 && `kubectl get ns $istio_namespace | grep -v name | wc -l` == 0 ]] ;then
    create_namespace $istio_namespace
  fi
  create_crd $istio_namespace
  deploy_istio $istio_namespace $istio_version
}

main

卸载脚本

#!/bin/bash

helm -n istio-system uninstall istio 
helm -n istio-system uninstall istio-init
kubectl delete crd `kubectl get crd | grep istio | awk '{print $1}'` 
kubectl delete ns istio-system

注意：卸载需谨慎，删除了 istio-system 的命名空间

总结

• 点击查看我的github
• 点击查看我的个人blog
• 日拱一卒，不期速成

上述步骤使用的是 istio 官方提供的默认配置，如果你想要自定配置，可以阅读 values.yaml 文件后，通过 --set 的方式修改，或者直接修改 chart。

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