istio安装过程说明

一、下载安装包

1、去Istio release 下载:

curl -L https://git.io/getLatestIstio | ISTIO_VERSION=1.1.7 sh -

2、进入目录

cd istio-1.1.7

The installation directory contains:

Installation YAML files for Kubernetes in install/

Sample applications in samples/

The istioctl client binary in the bin/ directory. istioctl is used when manually injecting Envoy as a sidecar proxy.

The istio.VERSION configuration file

3、设置环境变量

export PATH=$PWD/bin:$PATH

4、若要使用helm进行安装，把helm chart库的地址添加到helm。

To use the Istio release Helm chart repository, add the Istio release repository as follows:

helm repo add istio.io https://storage.googleapis.com/istio-release/releases/1.1.7/charts/

 

二、采用Helm安装

1、有两种安装法可选，分别是Install with Helm via helm template

和Install with Helm and Tiller via helm install，这里选择后一种。

 

1）创建service account

kubectl apply -f install/kubernetes/helm/helm-service-account.yaml

2）Install Tiller on your cluster with the service account:

helm init --service-account tiller

如何tiller原先已经安装，则应该执行下面的命令

helm init --upgrade --service-account tiller --tiller-image registry.cn-hangzhou.aliyuncs.com/google_containers/tiller:v2.14.0

3）Install the istio-init chart to bootstrap all the Istio’s CRDs:

helm install install/kubernetes/helm/istio-init --name istio-init --namespace istio-system

4）Verify that all 53 Istio CRDs were committed to the Kubernetes api-server using the following command:

kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l

显示结果应该是53

5）选择一个configuration profile安装，这里本人选择demo

helm install install/kubernetes/helm/istio --name istio --namespace istio-system \

    --values install/kubernetes/helm/istio/values-istio-demo.yaml --set gateways.istio-ingressgateway.type=NodePort

最后有如下提示：

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

 

2. Deploy your applications

 

$ kubectl apply -f .yaml

 

For more information on running Istio, visit:

https://istio.io/

 

三、验证安装

1）根据configuration profiles表格的说明检查相应用服务是否已经正确部署

kubectl get svc -n istio-system

2)确保相应的PODS状态是runing

kubectl get pods -n istio-system

 

• 卸载istio

若需要卸载istio，执行如下命令：

helm delete --purge istio

helm delete --purge istio-init

若要删除CRDs和istio configuration，可以用istio的安装包目录下执行如下命令：

kubectl delete -f install/kubernetes/helm/istio-init/files