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README.md

自动扩缩

访问：

curl http://http-echo.default.127.0.0.1.sslip.io

另开一个窗口，观察 Pod：

kubectl get pod -l serving.knative.dev/service=http-echo --watch

watch 返回：

扩缩至零，过程可能需要1-2分钟时间。

NAME                                      READY   STATUS        RESTARTS   AGE
http-echo-v1-deployment-948b9746b-275j2   2/2     Running       0          110s
http-echo-v1-deployment-948b9746b-275j2   2/2     Terminating   0          118s
http-echo-v1-deployment-948b9746b-275j2   1/2     Terminating   0          2m1s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating   0          2m29s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating   0          2m30s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating   0          2m30s

再次访问：

curl http://http-echo.default.127.0.0.1.sslip.io

watch 返回：

迅速启动。

NAME                                      READY   STATUS              RESTARTS   AGE
http-echo-v1-deployment-948b9746b-275j2   2/2     Running             0          110s
http-echo-v1-deployment-948b9746b-275j2   2/2     Terminating         0          118s
http-echo-v1-deployment-948b9746b-275j2   1/2     Terminating         0          2m1s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating         0          2m29s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating         0          2m30s
http-echo-v1-deployment-948b9746b-275j2   0/2     Terminating         0          2m30s
http-echo-v1-deployment-948b9746b-5vwgt   0/2     Pending             0          0s
http-echo-v1-deployment-948b9746b-5vwgt   0/2     Pending             0          0s
http-echo-v1-deployment-948b9746b-5vwgt   0/2     ContainerCreating   0          0s
http-echo-v1-deployment-948b9746b-5vwgt   1/2     Running             0          2s
http-echo-v1-deployment-948b9746b-5vwgt   2/2     Running             0          2s