kubernetes中istio-1.0.0如何部署和试用-创新互联
小编给大家分享一下kubernetes中istio-1.0.0如何部署和试用，希望大家阅读完这篇文章之后都有所收获，下面让我们一起去探讨吧！
一：简介
本文介绍如何在kubernetes1.10.4集群中部署istio-1.0.0 并试用istio自带的bookinfo实例应用。
二：安装
1.获取安装包
wget https://github.com/istio/istio/releases/download/1.0.0/istio-1.0.0-linux.tar.gz
tar -zxvf istio-1.0.0-linux.tar.gz
2.安装istioctl
如果手动注入sidecar的话需要使用这个命令:
cp istio-1.0./bin/istioctl /usr/local/bin/
设置环境变量：
ISTIO_HOME=/root/istio-1.0
PATH=$ISTIO_HOME/bin:$PATH
export ISTIO_HOME PATH
3.安装istio核心组件
kubectl apply -f istio-1.0.0/install/kubernetes/istio-demo.yaml
gcr.io和quay.io相关的镜像下载不了的话可以替换为自己的镜像：
daocloud.io/liukuan73/proxy_init:1.0.0
daocloud.io/liukuan73/galley:1.0.0
daocloud.io/liukuan73/mixer:1.0.0
daocloud.io/liukuan73/proxyv2:1.0.0
daocloud.io/liukuan73/pilot:1.0.0
daocloud.io/liukuan73/citadel:1.0.0
daocloud.io/liukuan73/servicegraph:1.0.0
daocloud.io/liukuan73/sidecar_injector:1.0.0
daocloud.io/liukuan73/istio-grafana:1.0.0
4.安装结果验证
三：试用
1.sidecar自动注入配置
Istio装好后，如果想sidecar在应用启动时自动注入到pod中，还需要配置如下4步：
a.安装istio-sidecar-injector
安装了istio-sidecar-injector后，kubectl create起应用的时候sidecar容器会直接自动注入到pod中，而不用手动注入。
b.启用mutating webhook admission controller
在kube-apiserver的启动参数的admission controller中按正确顺序加入如下两个controller:MutatingAdmissionWebhook,ValidatingAdmissionWebhook
--admission-control=ServiceAccount,Initializers,NamespaceLifecycle,NamespaceExists,LimitRanger,DefaultStorageClass,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota
c.启用admissionregistration api
kubectl api-versions | grep admissionregistration
admissionregistration.k8s.io/v1beta1
d.为需要自动注入sidecar的namespace打label
kubectl label namespace istio-test istio-injection=enabled
kubectl get namespace -L istio-injection
2.启动示例应用
a.示例结构
b.安装示例
kubectl apply -n istio-test -f istio-1.0.0/samples/bookinfo/platform/kube/bookinfo.yaml
c. 配置traefik Ingress
为了便于集群外访问验证，配置Ingress代理
apiVersion: extensions/v1beta1 kind: Ingress metadata: name: traefik-ingress namespace: kube-system spec: rules: - host: elasticsearch.donkey http: paths: - path: / backend: serviceName: elasticsearch-logging servicePort: 9200 - host: kibana.donkey http: paths: - path: / backend: serviceName: kibana-logging servicePort: 5601 - host: locust.donkey http: paths: - path: / backend: serviceName: locust-master servicePort: 8089 - host: dashboard.donkey http: paths: - path: / backend: serviceName: kubernetes-dashboard servicePort: 32666 --- apiVersion: extensions/v1beta1 kind: Ingress metadata: name: istio-ingress namespace: istio-system spec: rules: - host: grafana.istio.donkey http: paths: apiVersion: extensions/v1beta1 kind: Ingress metadata: name: traefik-ingress namespace: kube-system spec: rules: - host: elasticsearch.donkey http: paths: - path: / backend: serviceName: elasticsearch-logging servicePort: 9200 - host: kibana.donkey http: paths: - path: / backend: serviceName: kibana-logging servicePort: 5601 - host: locust.donkey http: paths: - path: / backend: serviceName: locust-master servicePort: 8089 - host: dashboard.donkey http: paths: - path: / backend: serviceName: kubernetes-dashboard servicePort: 32666 --- apiVersion: extensions/v1beta1 kind: Ingress metadata: name: istio-ingress namespace: istio-system spec: rules: - host: grafana.istio.donkey http: paths: - path: / backend: serviceName: grafana servicePort: 3000 - host: zipkin.istio.donkey http:
3.示例验证
a.bookinfo 示例 http://productpage.donkey/productpage?u=normal
b.监控 http://grafana.istio.donkey
c.Prometheus页面 http://prometheus.istio.donkey
d.ServiceGraph页面
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