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docs(istio): 更新安装文档

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@ -1,7 +1,6 @@
--- ---
title: "Istio 1.0.3 安装　" title: "Istio 1.1.3 安装　"
date: 2018-11-12T13:44:34+08:00 date: 2019-04-16T20:26:00+08:00
draft: false
--- ---
#### Service Mesh(服务网格) #### Service Mesh(服务网格)
@ -24,20 +23,20 @@ Istio 是完全开源的服务网格,提供了一套完整的解决方案，可
---- ----
进入 [Istio release](https://github.com/istio/istio/releases) 页面下载最新版安装包(1.0.3)并解压到当前目录, 进入 [Istio release](https://github.com/istio/istio/releases) 页面下载最新版安装包并解压到当前目录,
``` ```
curl -L https://git.io/getLatestIstio | sh - curl -L https://git.io/getLatestIstio | sh -
ll istio-1.0.3/ ll istio-1.1.3/
total 28 total 28
drwxr-xr-x 2 root root 22 10月 26 07:36 bin drwxr-xr-x 2 root root 22 Apr 13 06:36 bin
drwxr-xr-x 6 root root 79 10月 26 07:36 install drwxr-xr-x 6 root root 79 Apr 13 06:36 install
-rw-r--r-- 1 root root 648 10月 26 07:36 istio.VERSION -rw-r--r-- 1 root root 602 Apr 13 06:36 istio.VERSION
-rw-r--r-- 1 root root 11343 10月 26 07:36 LICENSE -rw-r--r-- 1 root root 11343 Apr 13 06:36 LICENSE
-rw-r--r-- 1 root root 5817 10月 26 07:36 README.md -rw-r--r-- 1 root root 5921 Apr 13 06:36 README.md
drwxr-xr-x 12 root root 212 10月 26 07:36 samples drwxr-xr-x 15 root root 241 Apr 13 06:36 samples
drwxr-xr-x 8 root root 4096 10月 26 07:36 tools drwxr-xr-x 7 root root 4096 Apr 13 06:36 tools
``` ```
- install Kubernetes 安装所需的 .yaml 文件 - install Kubernetes 安装所需的 .yaml 文件
- samples Task中的示例应用 - samples Task中的示例应用
@ -45,53 +44,119 @@ drwxr-xr-x 8 root root 4096 10月 26 07:36 tools
- istio.VERSION 配置文件 - istio.VERSION 配置文件
#### 安装 #### 安装
----
---
##### 安装　istio
注意事项 注意事项
Istio 默认使用‘负载均衡器’服务对象类型。对于裸机安装没有负载均衡器的情况下，安装需指定‘NodePort’类型。 - Node 节点内存不能低于 4G，否则相关容器可能启动失败
- Istio 默认使用‘负载均衡器’服务对象类型。对于裸机安装没有负载均衡器的情况下，安装需指定‘NodePort’类型。
##### 方案1：使用 Helm template 进行安装
```bash
cd /usr/local/src/istio-1.1.3
kubectl create namespace istio-system
# 安装 istio-init chart，来启动 Istio CRD 的安装过程
helm template install/kubernetes/helm/istio-init --name istio-init --namespace istio-system --set gateways.istio-ingressgateway.type=NodePort --set gateways.istio-egressgateway.type=NodePort | kubectl apply -f -
# 稍等一会儿执行
# 输出 53 或者 58 （若开启了 cert-manager）
kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l
# 部署与你选择的配置文件相对应的 Istio 的核心组件
# 不同配置说明 https://istio.io/zh/docs/setup/kubernetes/additional-setup/config-profiles/
# 选择 default 配置
helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--set gateways.istio-ingressgateway.type=NodePort \
--set gateways.istio-egressgateway.type=NodePort | kubectl apply -f -
# 或者选择demo 配置
helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
--set gateways.istio-ingressgateway.type=NodePort \
--set gateways.istio-egressgateway.type=NodePort \
--values install/kubernetes/helm/istio/values-istio-demo.yaml | kubectl apply -f -
``` ```
helm install --name istio install/kubernetes/helm/istio --namespace istio-system --set gateways.istio-ingressgateway.type=NodePort --set gateways.istio-egressgateway.type=NodePort
``` ##### 方案2：在 Helm 和 Tiller 的环境中使用 helm install 命令进行安装
见[官方文档](https://istio.io/zh/docs/setup/kubernetes/install/helm/#%E6%96%B9%E6%A1%88-2-%E5%9C%A8-helm-%E5%92%8C-tiller-%E7%9A%84%E7%8E%AF%E5%A2%83%E4%B8%AD%E4%BD%BF%E7%94%A8-helm-install-%E5%91%BD%E4%BB%A4%E8%BF%9B%E8%A1%8C%E5%AE%89%E8%A3%85)
##### 验证 ##### 验证
``` ```bash
# default 配置时
kubectl get pod -n istio-system kubectl get pod -n istio-system
NAME READY STATUS RESTARTS AGE NAME READY STATUS RESTARTS AGE
istio-citadel-6955bc9cb7-qh846 1/1 Running 0 3d22h istio-citadel-899dfb67c-5hlsc 1/1 Running 0 49s
istio-egressgateway-7dc5cbbc56-k4cgh 1/1 Running 0 3d22h istio-cleanup-secrets-1.1.3-nkdxt 0/1 Completed 0 50s
istio-galley-545b6b8f5b-k7ssx 1/1 Running 0 3d22h istio-galley-555dd7c7d7-rpfln 1/1 Running 0 49s
istio-ingressgateway-7958d776b5-ptdsc 1/1 Running 0 3d22h istio-ingressgateway-5b547dfb7b-ctm5l 1/1 Running 0 49s
istio-pilot-56bfdbffff-mtcn6 2/2 Running 0 3d22h istio-init-crd-10-l9xcj 0/1 Completed 0 66s
istio-policy-5c689f446f-6bzlq 2/2 Running 0 3d15h istio-init-crd-11-nqvml 0/1 Completed 0 66s
istio-policy-5c689f446f-dvmfq 2/2 Running 0 3d22h istio-pilot-9f5c75ddf-n5s6p 2/2 Running 0 49s
istio-policy-5c689f446f-f2kl8 2/2 Running 0 3d3h istio-policy-bd45d757d-6qcdg 2/2 Running 1 49s
istio-policy-5c689f446f-nfv2l 2/2 Running 0 3d1h istio-security-post-install-1.1.3-nbwwv 0/1 Completed 0 50s
istio-policy-5c689f446f-qdtql 2/2 Running 0 3d2h istio-sidecar-injector-998dd6cbb-n2hdm 1/1 Running 0 49s
istio-sidecar-injector-99b476b7b-dt24k 1/1 Running 0 3d22h istio-telemetry-656df5b64-k8vkf 2/2 Running 1 49s
istio-telemetry-55d68b5dfb-52ftl 2/2 Running 0 3d22h prometheus-7f87866f5f-t97wc 1/1 Running 0 49s
istio-telemetry-55d68b5dfb-dvdvz 2/2 Running 0 3d22h
istio-telemetry-55d68b5dfb-ln2sr 2/2 Running 0 3d # demo 配置时
istio-telemetry-55d68b5dfb-m2mb8 2/2 Running 0 3d grafana-749c78bcc5-fbzmn 1/1 Running 0 101s
istio-telemetry-55d68b5dfb-sjgq8 2/2 Running 0 3d istio-citadel-899dfb67c-8shx2 1/1 Running 0 100s
prometheus-65d6f6b6c-dsv26 1/1 Running 0 3d22h istio-cleanup-secrets-1.1.3-jbhsl 0/1 Completed 0 102s
istio-egressgateway-748d5fd794-x5bjt 1/1 Running 0 101s
istio-galley-555dd7c7d7-86r2b 1/1 Running 0 101s
istio-grafana-post-install-1.1.3-kq7b4 0/1 Completed 0 103s
istio-ingressgateway-55dd86767f-jd9m4 1/1 Running 0 101s
istio-init-crd-10-l9xcj 0/1 Completed 0 16m
istio-init-crd-11-nqvml 0/1 Completed 0 16m
istio-pilot-6964dd4957-7bzdq 2/2 Running 0 101s
istio-policy-689687bd77-ncw2n 2/2 Running 1 101s
istio-security-post-install-1.1.3-t2kwh 0/1 Completed 0 102s
istio-sidecar-injector-998dd6cbb-7mwkh 1/1 Running 0 100s
istio-telemetry-8564679887-59c8z 2/2 Running 1 101s
istio-tracing-595796cf54-jn49s 1/1 Running 0 100s
kiali-5df77dc9b6-psjs4 1/1 Running 0 101s
prometheus-7f87866f5f-hrbgt 1/1 Running 0 100s
``` ```
```
```bash
kubectl get svc -n istio-system kubectl get svc -n istio-system
# default 配置时
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
istio-citadel ClusterIP 10.68.7.100 <none> 8060/TCP,9093/TCP 3d22h istio-citadel ClusterIP 10.68.236.249 <none> 8060/TCP,15014/TCP 75s
istio-egressgateway NodePort 10.68.67.237 <none> 80:30060/TCP,443:38194/TCP 3d22h istio-galley ClusterIP 10.68.105.102 <none> 443/TCP,15014/TCP,9901/TCP 75s
istio-galley ClusterIP 10.68.12.54 <none> 443/TCP,9093/TCP 3d22h istio-ingressgateway NodePort 10.68.181.46 <none> 15020:32761/TCP,80:31380/TCP,443:31390/TCP,31400:31400/TCP,15029:33185/TCP,15030:20745/TCP,15031:36208/TCP,15032:34095/TCP,15443:36244/TCP 75s
istio-ingressgateway NodePort 10.68.87.79 <none> 80:31380/TCP,443:31390/TCP,31400:31400/TCP,15011:31812/TCP,8060:30957/TCP,853:23011/TCP,15030:22292/TCP,15031:23663/TCP 3d22h istio-pilot ClusterIP 10.68.252.143 <none> 15010/TCP,15011/TCP,8080/TCP,15014/TCP 75s
istio-pilot ClusterIP 10.68.84.101 <none> 15010/TCP,15011/TCP,8080/TCP,9093/TCP 3d22h istio-policy ClusterIP 10.68.40.51 <none> 9091/TCP,15004/TCP,15014/TCP 75s
istio-policy ClusterIP 10.68.94.206 <none> 9091/TCP,15004/TCP,9093/TCP 3d22h istio-sidecar-injector ClusterIP 10.68.55.134 <none> 443/TCP 74s
istio-sidecar-injector ClusterIP 10.68.191.221 <none> 443/TCP 3d22h istio-telemetry ClusterIP 10.68.16.11 <none> 9091/TCP,15004/TCP,15014/TCP,42422/TCP 75s
istio-telemetry ClusterIP 10.68.199.8 <none> 9091/TCP,15004/TCP,9093/TCP,42422/TCP 3d22h prometheus ClusterIP 10.68.65.238 <none> 9090/TCP 75s
prometheus ClusterIP 10.68.91.13 <none> 9090/TCP
# demo 配置时
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
grafana ClusterIP 10.68.65.248 <none> 3000/TCP 2m27s
istio-citadel ClusterIP 10.68.72.100 <none> 8060/TCP,15014/TCP 2m26s
istio-egressgateway NodePort 10.68.21.24 <none> 80:26775/TCP,443:28249/TCP,15443:38494/TCP 2m27s
istio-galley ClusterIP 10.68.73.9 <none> 443/TCP,15014/TCP,9901/TCP 2m27s
istio-ingressgateway NodePort 10.68.122.190 <none> 15020:39248/TCP,80:31380/TCP,443:31390/TCP,31400:31400/TCP,15029:33522/TCP,15030:26010/TCP,15031:27064/TCP,15032:32158/TCP,15443:30848/TCP 2m27s
istio-pilot ClusterIP 10.68.116.5 <none> 15010/TCP,15011/TCP,8080/TCP,15014/TCP 2m26s
istio-policy ClusterIP 10.68.239.246 <none> 9091/TCP,15004/TCP,15014/TCP 2m27s
istio-sidecar-injector ClusterIP 10.68.93.151 <none> 443/TCP 2m26s
istio-telemetry ClusterIP 10.68.117.254 <none> 9091/TCP,15004/TCP,15014/TCP,42422/TCP 2m26s
jaeger-agent ClusterIP None <none> 5775/UDP,6831/UDP,6832/UDP 2m25s
jaeger-collector ClusterIP 10.68.103.8 <none> 14267/TCP,14268/TCP 2m26s
jaeger-query ClusterIP 10.68.73.252 <none> 16686/TCP 2m26s
kiali ClusterIP 10.68.214.228 <none> 20001/TCP 2m27s
prometheus ClusterIP 10.68.203.209 <none> 9090/TCP 2m26s
tracing ClusterIP 10.68.113.236 <none> 80/TCP 2m25s
zipkin ClusterIP 10.68.96.189 <none> 9411/TCP 2m25s
``` ```
##### Sidecar 的自动注入 ##### Sidecar 的自动注入
@ -100,20 +165,15 @@ prometheus ClusterIP 10.68.91.13 <none> 9090/TCP
需要在kube-apiserver 启动 admission-control 参数中加入 MutatingAdmissionWebhook 和 ValidatingAdmissionWebhook并确保正确的顺序,如果是多master安装，确保每个kube-apiserver都要进行修改。 需要在kube-apiserver 启动 admission-control 参数中加入 MutatingAdmissionWebhook 和 ValidatingAdmissionWebhook并确保正确的顺序,如果是多master安装，确保每个kube-apiserver都要进行修改。
```
/bin/kube-apiserver --admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,ResourceQuota,NodeRestriction,MutatingAdmissionWebhook,ValidatingAdmissionWebhook
```
重启 kube-apiserver 即可
##### 部署应用验证 ##### 部署应用验证
istio 的samples目录中有很多示例。我们现在使用samples/sleep/sleep.yaml 来验证刚刚开启的Sidecar自动注入功能。 istio 的samples目录中有很多示例。我们现在使用samples/sleep/sleep.yaml 来验证刚刚开启的Sidecar自动注入功能。
进入目录 istio-1.0.3/ 部署一个新的应用 进入目录 istio-1.1.3/ 部署一个新的应用
``` ```bash
cd istio-1.0.3/ cd istio-1.1.3/
kubectl apply -f samples/sleep/sleep.yaml kubectl apply -f samples/sleep/sleep.yaml
kubectl get pod kubectl get pod
@ -123,7 +183,7 @@ sleep-7549f66447-wv8cl 1/1 Running 0 1m
一切都是熟悉的味道。下面给 default 命名空间设置标签：istio-injection=enabled，这样就会在pod 创建时触发 Sidecar 的注入过程。从此default 名称空间拥有了超能力. 一切都是熟悉的味道。下面给 default 命名空间设置标签：istio-injection=enabled，这样就会在pod 创建时触发 Sidecar 的注入过程。从此default 名称空间拥有了超能力.
``` ```bash
kubectl label namespace default istio-injection=enabled kubectl label namespace default istio-injection=enabled
kubectl get namespace -L istio-injection kubectl get namespace -L istio-injection
NAME STATUS AGE ISTIO-INJECTION NAME STATUS AGE ISTIO-INJECTION
@ -134,7 +194,7 @@ kube-system Active 4d2h
``` ```
接下来删除上面创建的pod，观察下有什么变化。 接下来删除上面创建的pod，观察下有什么变化。
``` ```bash
kubectl delete pod sleep-7549f66447-wv8cl kubectl delete pod sleep-7549f66447-wv8cl
pod "sleep-7549f66447-wv8cl" deleted pod "sleep-7549f66447-wv8cl" deleted
@ -142,8 +202,9 @@ kubectl get pod
NAME READY STATUS RESTARTS AGE NAME READY STATUS RESTARTS AGE
sleep-7549f66447-x4td6 2/2 Running 0 37s sleep-7549f66447-x4td6 2/2 Running 0 37s
``` ```
刚刚的pod里面现在已经拥有两个容器，进入pod一探究竟。 刚刚的pod里面现在已经拥有两个容器，进入pod一探究竟。
``` ```bash
kubectl describe pod sleep-7549f66447-x4td6 kubectl describe pod sleep-7549f66447-x4td6
.... ....
@ -158,16 +219,14 @@ sleep-7549f66447-x4td6 2/2 Running 0 37s
.... ....
``` ```
多出了一个 istio-proxy 容器及其对应的存储卷 多出了一个 `istio-proxy` 容器及其对应的存储卷
#### 卸载istio #### 卸载istio
--- ---
``` ```bash
helm delete --purge istio helm delete --purge istio
``` ```