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6.3章总结疑惑 #19

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smajun opened this issue Oct 14, 2019 · 0 comments
Open

6.3章总结疑惑 #19

smajun opened this issue Oct 14, 2019 · 0 comments

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@smajun
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smajun commented Oct 14, 2019 

   你好，在读到本书6.3章总结时有些疑惑，总结最后有提到，”Sidecar Injector 在注入容器时，会自动解析业务容器的容器端口，设置 Readiness Probe。同时，如果未给 Pod 实例创建相应的 Service，那么 Sidecar 健康检查会失败，即Pod永远处于NotReady状态。”
   我试着在weather命名空间下新加了个Deployment，没有给它创建相应的Service，但并没有出现永远处于NotReady状态。这个Deployment内的POD也可以正常访问weather下的其他服务。

书中说到Istio治理的是服务间的访问，治理的对象不一定非要是服务提供者吧。如果有个Deployment只是服务消费者，并不是服务提供者，也就没必要给它创建Service，那就无法使用Istio治理其对其他服务的访问了吗？
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