目的
本文旨在帮助想了解istio安装和运行bookinfo示例的同学快速入门
前置准备
安装k8s和helm
1、k8s安装
修改主机名
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hostnamectl set-hostname k8s-masterhostnamectl set-hostname k8s-node |
配置阿里云yum源环境和gpg校验配置
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docker-ce/etc/yum.repos.d目录下wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repokubernetes/etc/yum.repos.d目录下vim kubenetes.repo[kubernetes]name=Kubernetes Repobaseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/gpgcheck=1gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpgenabled=1 |
gpg校验配置
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wget https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpgwget https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpgrpm --import rpm-package-key.gpgrpm --import yum-key.gpg |
根据官方示例安装kubeadm(安装1.15.4版本k8s)
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yum install -y docker-ce kubelet-1.15.4 kubeadm-1.15.4 kubectl-1.15.4 |
按照官方示例设置环境参数
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
kubeadm init运行使用阿里云镜像
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kubeadm init \--image-repository registry.aliyuncs.com/google_containers \--pod-network-cidr=10.244.0.0/16 |
其中10.244.0.0/16是 flannel网络必加参数
2、helm安装
1.下载安装
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wget https://get.helm.sh/helm-v2.14.3-linux-amd64.tar.gztar -zxf helm-v2.14.3-linux-amd64.tar.gzcd linux-amd64chmod +x helmmv helm /usr/local/bin |
2.确保您拥有一个为Tiller定义了集群管理员角色的服务帐户
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kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.3/install/kubernetes/helm/helm-service-account.yaml |
3.使用阿里镜像安装tiller,同时将repo 改为微软提供的helm repo
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helm init --upgrade -i registry.cn-hangzhou.aliyuncs.com/google_containers/tiller:v2.14.3 --stable-repo-url http://mirror.azure.cn/kubernetes/charts/ --service-account=tiller |
Istio安装
1.下载安装包
参考地址:https://istio.io/docs/setup/#downloading-the-release
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curl -L https://git.io/getLatestIstio | ISTIO_VERSION=1.3.1 sh -cd istio-1.3.1export PATH=$PWD/bin:$PATH |
2.通过helm install与Helm和Tiller一起安装istio
参考地址: https://istio.io/docs/setup/install/helm/
使用kubectl apply安装所有Istio自定义资源定义(CRD),并等待几秒钟以在Kubernetes API服务器中提交CRD:
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helm install install/kubernetes/helm/istio-init --name istio-init --namespace istio-system --set gateways.istio-ingressgateway.type=NodePort |
使用以下命令验证是否已将所有23个Istio CRD都提交给Kubernetes api服务器:
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kubectl get crds | grep 'istio.io' | wc -l |
选择一个配置文件,然后安装与您选择的文件相对应的istio图表:
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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 |
3.运行bookinfo示例
参考地址: https://istio.io/docs/examples/bookinfo/
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kubectl label namespace default istio-injection=enabledkubectl apply -f samples/bookinfo/platform/kube/bookinfo.yamlkubectl get podskubectl apply -f samples/bookinfo/networking/bookinfo-gateway.yamlexport INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')export SECURE_INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="https")].nodePort}')export INGRESS_HOST=<k8s-node ip>export GATEWAY_URL=$INGRESS_HOST:$INGRESS_PORT |
浏览器访问http://${GATEWAY_URL}/productpage
更多示例参考:https://istio.io/docs/tasks/
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