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Istio deployment: quickly start microservices,

2022-07-02 19:43:00 【51CTO】

Download binary installation package

       
       [[email protected] ~]
       
       # $ wget https://github.com/istio/istio/releases/download/1.11.8/istio-1.11.8-linux-amd64.tar.gz
       
       [[email protected] ~]
       
       # tar zxvf istio-1.11.8-linux-amd64.tar.gz
       
       [[email protected] ~]
       
       # cd istio-1.11.8/
       
       [[email protected] ~]
       
       # ls
       
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samples: Sample application ;

bin: contain istioctl Client files for ,istioctl The tool is used for manual injection Envoy sidecar agent （ Side car agent ）

install Istioctl

hold istioctl Copy this executable to /usr/bin/ Catalog

       
       [[email protected] ~]
       
       # mv bin/istioctl /usr/local/bin/ # install Istioctl Client tools 
       
       [[email protected] ~]
       
       # istioctl install -y --set profile=demo
       
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Install： Install or reconfigure on the cluster Istio.

--set profile=demo： Generate demo configuration file , Don't wait for confirmation

Istio Deploy ： Get started with micro services quickly ,_ Microservices

Image download

It is best to download every node , install istio Will automatically download when , But it is slow and may fail to download .

       
       [[email protected] ~]
       
       # docker pull docker.io/istio/proxyv2:1.11.8
       
       [[email protected] ~]
       
       # docker pull istio/pilot:1.11.8
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-details-v1:1.15.0
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-productpage-v1:1.16.2
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-reviews-v1:1.15.0
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-reviews-v2:1.15.0
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-reviews-v3:1.15.0
       
       [[email protected] ~]
       
       # docker pull istio/examples-bookinfo-ratings-v1:1.15.0
       
       [[email protected] ~]
       
       # docker pull kennethreitz/httpbin:latest
      
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Service validation

1） verification Pod If there is something wrong

       
       [[email protected] ~]
       
       # kubectl -n istio-system get pods
       
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Istio Deploy ： Get started with micro services quickly ,_ Microservices _02

Pod The service status is normal ！

2） verification Service Whether the service is normal

      
      
       
       [[email protected] ~]
       
       # kubectl -n istio-system get svc
      
      
      
      
       
       1.

Istio Deploy ： Get started with micro services quickly ,_ Cloud native _03

You can see istio-ingressgateway Gateway service Service exception , This is because the service uses the public cloud access method , We are our own kubernetes Cluster environment , So it will be abnormal .

3） modify istio-ingressgateway Access to

Default installed istio-ingressgateway Service is based on LoadBalancer( Public cloud environment ) Way of exposure , The service department pending State and cannot be used normally , Need to change to NodePort Access to .

       
       [[email protected] ~]
       
       # kubectl -n istio-system edit svc istio-ingressgateway
       
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       [[email protected] ~]
       
       # kubectl -n istio-system get svc
       
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Istio Deploy ： Get started with micro services quickly ,_kubernetes_04

You can see that the service is normal .

Turn on default Automatic namespace injection

Mark the specified namespace istio-injection=enabled The label of ,istio There is to the namespace Pod Have injection permission .

       
       [[email protected] ~]
       
       # kubectl label namespace default istio-injection=enabled
       
       [[email protected] ~]
       
       # kubectl describe namespaces default | grep Labels
       
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install Kiali And other plug-ins

Deploy Kiali instrument panel 、 as well as Prometheus、Grafana、 also Jaeger.

Grafana: visualization UI Interface , Exhibition Prometheus Monitoring data ;

Zipkin： Full link monitoring tool , Monitor the calling relationship between services ;

1） Install related plug-ins

       
       [[email protected] ~]
       
       # ls samples/addons/
       
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       [[email protected] ~]
       
       # kubectl apply -f samples/addons/
       
       [[email protected] ~]
       
       # kubectl rollout status deployment/kiali -n istio-system
       
       [[email protected] ~]
       
       # kubectl -n istio-system get pod
       
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       [[email protected] ~]
       
       # kubectl -n istio-system get svc # see Service
      
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11.

Istio Deploy ： Get started with micro services quickly ,_ Microservices _05

2） Modify the service access method

The default service of the plug-in just deployed is ClusterIP, Unable to access related services in the browser , Need to change to NodePort.

       
       [[email protected] ~]
       
       # kubectl -n istio-system edit grafana
       
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       p
       
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       N
       
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       [[email protected] ~]
       
       # kubectl -n istio-system edit svc kiali
       
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3） Browser access Kiali instrument panel

It has been revised just now Kiali by nodeport Access to , Enter the node in the browser IP:port So we can visit .

       
       [[email protected] ~]
       
       # kubectl -n istio-system get svc
       
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1.
2.

Istio Deploy ： Get started with micro services quickly ,_ Operation and maintenance _06

uninstall istio colony

Uninstalling the cluster will not uninstall the installed plug-ins , The installed plug-ins have to be uninstalled separately .

      
      
       
       [[email protected] ~]
       
       # istioctl manifest generate --set profile=demo | kubectl delete -f -
      
      
      
      
       
       1.

Istio Deploy ： Get started with micro services quickly ,_ Cloud native _07