1、重装命令

istioctl manifest generate --set profile=demo | kubectl delete --ignore-not-found=true -f -

2、下载 

参考：02、istio部署到k8s中 - 简书 (jianshu.com)

参考 Istio / 入门

curl -L https://istio.io/downloadIstio | ISTIO_VERSION=1.20.0 TARGET_ARCH=x86_64 sh -

tar -zxvf istio-1.20.0-linux-amd64.tar.gz

vim /etc/profile

export ISTIO_HOME=/opt/istio-1.20.0

source /etc/profile

echo $ISTIO_HOME

/opt/istio-1.20.0

export PATH=$PWD/bin:$PATH

 which istioctl

[root@bigData07 istio-1.20.0]# istioctl install --set profile=demo -y

报异常：
Error: failed to install manifests: errors occurred during operation: creating default tag would conflict:
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector ) Webhook overlaps with others: [istio-revision-tag-default/namespace.sidecar-injector.istio.io]. This may cause injection to occur twice.
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector ) Webhook overlaps with others: [istio-revision-tag-default/object.sidecar-injector.istio.io]. This may cause injection to occur twice.
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector ) Webhook overlaps with others: [istio-revision-tag-default/rev.namespace.sidecar-injector.istio.io]. This may cause injection to occur twice.
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector ) Webhook overlaps with others: [istio-revision-tag-default/rev.object.sidecar-injector.istio.io]. This may cause injection to occur twice.

kubectl get MutatingWebhookConfiguration

kubectl delete MutatingWebhookConfiguration istio-revision-tag-default

istioctl install --set profile=demo -y

kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml

kubectl exec "$(kubectl get pod -l app=ratings -o jsonpath='{.items[0].metadata.name}')" -c ratings -- curl -sS productpage:9080/productpage | grep -o "<title>.*</title>"

对外开放应用程序

此时，BookInfo 应用已经部署，但还不能被外界访问。 要开放访问，您需要创建 Istio 入站网关（Ingress Gateway）， 它会在网格边缘把一个路径映射到路由。

kubectl apply -f

samples/bookinfo/networking/bookinfo-gateway.yaml

kubectl describe ns default

五、确定入站 IP 和端口

kubectl get svc istio-ingressgateway -n istio-system

kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}'

kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="https")].nodePort}'

kubectl get po -l istio=ingressgateway -n istio-system -o jsonpath='{.items[0].status.hostIP}'

http://192.168.1.245:32258/productpage

查看仪表盘

安装 Kiali 和其他插件，等待部署完成。

kubectl rollout status deployment/kiali -n istio-system

istioctl dashboard kiali

 kubectl get svc -n istio-system -owide

kubectl get all -n istio-system

kubectl patch svc -n istio-system kiali -p '{"spec": {"type": "NodePort"}}'

http://192.168.1.245:31582/kiali

istiod

istiod中的’d’ 代表 daemon

istio ingress gateway
istio ingress gateway是进入集群的大门，外部要访问网格内部需要从这个ingress gateway进入

istio egress gateway
istio egress gateway是出去集群的大门。流量出去的时候走这
卸载istio

istioctl x uninstall --purge

其他组件

参考：【精选】Istio的监控组件Prometheus_istiod sidecar 流量监控 promethue-CSDN博客

istioctl dashboard prometheus

kubectl get svc -n istio-system -owide

kubectl patch svc -n istio-system prometheus -p '{"spec": {"type": "NodePort"}}'

http://192.168.1.245:32193/

istioctl dashboard grafana

kubectl patch svc -n istio-system grafana -p '{"spec": {"type": "NodePort"}}'

http://192.168.1.245:30262/

kubectl patch svc -n istio-system tracing -p '{"spec":{"type": "NodePort"}}'

kubectl get svc -n istio-system

http://192.168.1.245:32295/jaeger/search

参考：Online Boutique在k8s中部署，启用istio，配置Kiali、Jaeger、Prometheus、Grafana_kiali部署_谁老是和我重名啊的博客-CSDN博客