@TOC
前言
上一篇讲了什么是Istio的实践篇，这次咱们就来实际操作。
想看上一篇实践篇的看这里（看完相对有所播种）：
[Istio是什么？] 还不晓得你就out了,一文40分钟疾速了解_小叶的技术Logs的博客-CSDN博客
本文阐明 请大家务必查看
本文有两个版本，具体版、简洁版。
前者适宜老手，后者适宜新手（不便大家查找，从而过滤掉某些步骤，节约工夫老本） 所以大家按需查看哟。
| 具体版 | 简洁版 |
|---|
简洁版：蕴含所有步骤，以及命令的执行过程（适宜老手）
简洁版：只蕴含命令（适宜有肯定熟练度的人）
环境筹备
| 零碎 | Vcpu | Memory | 集群 |
|---|---|---|---|
| centos7 | 2 | 8 | kubernetes |
具体版
入门：搭建步骤
Istio软件包下载
装置最新软件包
$ curl -L https://istio.io/downloadIstio | sh - # 装置最新软件包这一条命令如果下载不下来，能够间接拜访下载地址：Istio下载
筛选对应的istio版本、下载对应的压缩文件，如图所示：留神：Istio1.13.3版本，要求kubernetes最低集群版是1.19
解压软件包：
[root@master istio]# lltotal 22704-rw-r--r-- 1 root root 23245765 Apr 23 10:39 istio-1.12.3-linux-amd64.tar.gz[root@master istio]# tar -vzxf istio-1.12.3-linux-amd64.tar.gzistio-1.12.3/istio-1.12.3/manifest.yamlistio-1.12.3/bin/istio-1.12.3/bin/istioctlistio-1.12.3/manifests/istio-1.12.3/manifests/examples/istio-1.12.3/manifests/examples/customresource/istio-1.12.3/manifests/examples/customresource/istio_v1alpha1_istiooperator_cr.yamlistio-1.12.3/manifests/examples/user-gateway/装置目录蕴含：
- samples/ 目录下的示例应用程序
- bin/ 目录下的 istioctl 客户端二进制文件 .
配置环境变量：
[root@master istio]# cat /etc/profileexport ISTIO_HOME=/root/istio/istio-1.12.3 export PATH=$PATH:$ISTIO_HOME/bin[root@master istio]# istioctl versionclient version: 1.12.3control plane version: 1.12.3data plane version: 1.12.3 (10 proxies)下载Istio
[root@master ~]# istioctl install --set profile=demo -yDetected that your cluster does not support third party JWT authentication. Falling back to less secure first party JWT. See https://istio.io/v1.12/docs/ops/best-practices/security/#configure-third-party-service-account-tokens for details.! values.global.jwtPolicy is deprecated; use Values.global.jwtPolicy=third-party-jwt. See http://istio.io/latest/docs/ops/best-practices/security/#configure-third-party-service-account-tokens for more information insteadWARNING: Istio control planes installed: 1.13.3.WARNING: An older installed version of Istio has been detected. Running this command will overwrite it.✔ Istio core installed✔ Istiod installed✔ Egress gateways installed✔ Ingress gateways installed✔ Installation complete Making this installation the default for injection and validation.Thank you for installing Istio 1.12. Please take a few minutes to tell us about your install/upgrade experience! https://forms.gle/FegQbc9UvePd4Z9z7主动注入 Envoy 边车代理
[root@master ~]# kubectl label namespace default istio-injection=enablednamespace/default labeled卸载
残缺卸载 Istio
[root@master istio]# istioctl x uninstall --purgeAll Istio resources will be pruned from the clusterProceed? (y/N) y Removed IstioOperator:istio-system:installed-state. Removed PodDisruptionBudget:istio-system:istio-egressgateway. Removed PodDisruptionBudget:istio-system:istio-ingressgateway. Removed PodDisruptionBudget:istio-system:istiod. Removed Deployment:istio-system:istio-egressgateway. Removed Deployment:istio-system:istio-ingressgateway. Removed Deployment:istio-system:istiod. Removed Service:istio-system:istio-egressgateway. Removed Service:istio-system:istio-ingressgateway. Removed Service:istio-system:istiod. Removed ConfigMap:istio-system:istio. Removed ConfigMap:istio-system:istio-sidecar-injector. Removed Pod:istio-system:istio-egressgateway-6b69dfb9f8-x7zwb. Removed Pod:istio-system:istio-ingressgateway-7484f57fd6-hrjjt. Removed Pod:istio-system:istiod-7989b7749b-rmslt.简洁版
装置
[root@master istio]# curl -L https://istio.io/downloadIstio | sh -[root@master istio]# tar -vzxf istio-1.12.3-linux-amd64.tar.gz[root@master istio]# cat /etc/profileexport ISTIO_HOME=/root/istio/istio-1.12.3 export PATH=$PATH:$ISTIO_HOME/bin[root@master ~]# istioctl install --set profile=demo -y[root@master istio]# kubectl label namespace default istio-injection=enabled卸载
[root@master istio]# istioctl x uninstall --purge