【Istio实际操作篇】Istio入门,10分钟快速安装
阅读原文时间:2023年07月08日阅读:2

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目录

上一篇讲了什么是Istio的理论篇,这次我们就来实际操作。

想看上一篇理论篇的看这里(看完绝对有所收获):

[Istio是什么?] 还不知道你就out了,一文40分钟快速理解_小叶的技术Logs的博客-CSDN博客

本文有两个版本,详细版、简洁版

前者适合新手,后者适合老手(方便大家查找,从而过滤掉某些步骤,节约时间成本) 所以大家按需查看哟。

详细版

简洁版

简洁版:包含所有步骤,以及命令的执行过程(适合新手)

简洁版:只包含命令(适合有一定熟练度的人)


系统

Vcpu

Memory

集群

centos7

2

8

kubernetes

入门:搭建步骤

Istio软件包下载

安装最新软件包

$ curl -L https://istio.io/downloadIstio | sh -  # 安装最新软件包

这一条命令如果下载不下来,可以直接访问下载地址:Istio下载

挑选对应的istio版本、下载对应的压缩文件,如图所示:

注意:Istio1.13.3版本,要求kubernetes最低集群版是1.19

解压软件包:

[root@master istio]# ll
total 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.gz
istio-1.12.3/
istio-1.12.3/manifest.yaml
istio-1.12.3/bin/
istio-1.12.3/bin/istioctl
istio-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.yaml
istio-1.12.3/manifests/examples/user-gateway/

安装目录包含:

  • 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/profile
export ISTIO_HOME=/root/istio/istio-1.12.3
export PATH=$PATH:$ISTIO_HOME/bin


[root@master istio]# istioctl version
client version: 1.12.3
control plane version: 1.12.3
data plane version: 1.12.3 (10 proxies)

下载Istio

[root@master ~]# istioctl install --set profile=demo -y
Detected 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 instead
WARNING: 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

自动注入 Envoy 边车代理

[root@master ~]#  kubectl label namespace default istio-injection=enabled
namespace/default labeled

完整卸载 Istio

[root@master istio]# istioctl x uninstall --purge
All Istio resources will be pruned from the cluster
Proceed? (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.

安装

[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/profile
export 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

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