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4.2 快速部署Istio
Istio的发布页面位于https://github.com/istio/istio/releases/，其中包含各个客户端平台下Istio的各个版本，例如OS X下Istio 1.0.4版本的安装包名称为istio-1.0.4-osx.tar.gz。在下载安装包后进行解压。
接下来，进入解压后的安装目录；将bin目录中的istioctl复制到一个PATH包含的路径中，例如cp bin/istioctl /usr/local/bin；之后开始部署Istio：
$ kubectl apply -f install/kubernetes/istio-demo.yaml
在部署开始后，可以看到类似下面的输出内容：
…… configmap/istio created configmap/istio-sidecar-injector created serviceaccount/istio-galley-service-account created serviceaccount/istio-egressgateway-service-account created …… clusterrole.rbac.authorization.k8s.io/istio-grafana-post-install-istio-system created clusterrolebinding.rbac.authorization.k8s.io/istio-grafana-post-instal l-role-binding-istio-system created job.batch/istio-grafana-post-install created …… serviceaccount/prometheus created serviceaccount/istio-cleanup-secrets-service-account created clusterrole.rbac.authorization.k8s.io/istio-cleanup-secrets-istio-syst em created …… customresourcedefinition.apiextensions.k8s.io/instances.config.istio.i o created customresourcedefinition.apiextensions.k8s.io/templates.config.istio.io created …… kubernetes.config.istio.io/attributes created destinationrule.networking.istio.io/istio-policy created destinationrule.networking.istio.io/istio-telemetry created
不难看出，除了常见的Deployment、Service、Configmap、ServiceAccount等Kubernetes对象，这里还创建了大量的CRD及各种CRD的下属资源。
运行如下命令，查看istio-system命名空间中的Pod启动状况，其中的-w参数用于持续查询Pod状态的变化：
$ kubectl get pods -n istio-system -w NAME READY STATUS RESTARTS AGE grafana-59b787b9b-ncw59 1/1 Running 0 15m istio-citadel-5d8956cc6-b4m7w 1/1 Running 0 15m istio-cleanup-secrets-m9xlk 0/1 Completed 0 17m istio-egressgateway-7cf89fb4f7-b4wk5 1/1 Running 0 15m istio-galley-6975b6bd45-qm79m 1/1 Running 0 15m istio-ingressgateway-6996d566d4-vm2ws 1/1 Running 0 15m istio-pilot-ccdc987c7-bjfbc 2/2 Running 0 15m istio-policy-5b99bdc4f-dpcb8 2/2 Running 0 15m istio-sidecar-injector-575597f5cf-5fp4w 1/1 Running 0 15m istio-telemetry-6bf849d48d-zgcdq 2/2 Running 0 15m istio-tracing-7596597bd7-fmngj 1/1 Running 0 15m prometheus-76db5fddd5-z4tc9 1/1 Running 0 15m servicegraph-758f96bf5b-4gscm 1/1 Running 1 15m
在列表中会看到有的Pod状态为Completed，不用担心，这是在安装过程中运行的一些Job留下的Pod, Completed状态说明Job执行成功。