Infra@LINE

Transcript

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     $ docker run -ti ¥ ubuntu bash

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37. $ cat serve.go time.Sleep(5 * time.Second) http.HandleFunc("/", func(w http.ResponseWriter, r

    *http.Request) { log.Printf("%s %s %s %s", r.Method, r.URL.String(), r.RemoteAddr, r.UserAgent()) w.Write([]byte(*greeting + "¥n")) })

38. $ cat Dockerfile FROM golang:1.12-alpine RUN go build serve.go CMD

    ["./serve", "--listen=:80", "--greeting=Hello, Docker!"] $ docker build --tag $TAG . Successfully built 728b5f3086be Successfully tagged docker- registry.linecorp.com/christopher- pickel/hello-world:latest

39. $ docker run -rm --name=demo ¥ --publish 127.0.0.1:2080:80/tcp ¥ $TAG

    2019/07/25 06:34:41 starting 2019/07/25 06:34:46 listening on :80 2019/07/25 06:34:52 GET / 172.17.0.1:41676 curl/7.54.0 $ curl localhost:2080 Hello, Docker!

40. $ docker exec -ti demo bash bash-4.4# ps PID USER

    TIME COMMAND 1 root 0:00 ./serve --listen=… 12 root 0:00 bash 22 root 0:00 ps bash-4.4# curl localhost Hello, Docker! 2019/07/25 06:36:27 GET / 127.0.0.1:36774 curl/7.64.0

41. bash-4.4# file ./serve serve: ELF 64-bit LSB executable, x86-64… bash-4.4#

    uname Linux bash-4.4# exit $ uname Darwin

42. $ cat kube.yaml containers: - name: hello image: docker-registry.linecorp.com/ch… args:

    ["./serve", "--listen=:80", "--greeting=Hello, Kubernetes!"] readinessProbe: httpGet: path: /healthz port: 80

43. $ kubectl apply -f kube.yaml namespace/demo created deployment.apps/hello created service/hello

    created $ curl $(minikube ip):$PORT Hello, Kubernetes! namespace/demo created deployment.apps/hello created service/hello created

44. $ kubectl logs hello-674f6956d-97kcb 2019/07/23 09:11:34 starting 2019/07/23 09:11:39 listening

    on :80 2019/07/23 09:11:44 GET /healthz 172.17.0.1:39214 kube-probe/1.15 2019/07/23 09:11:49 GET /healthz 172.17.0.1:39214 kube-probe/1.15 2019/07/23 09:11:51 GET / 172.17.0.1:63338 curl/7.54.0

45. $ kubectl edit deployment hello (s/replicas: 1/replicas: 10/) $ kubectl

    edit deployment hello (s/Hello, Kubernetes/Hello, Rollouts/) $ kubectl rollout status deployment hello Waiting for deployment "hello" rollout to finish: 9 of 10 updated replicas are available... deployment "hello" successfully rolled out

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