Enjoying k8s cluster with Minikube and Helm

- My kubernetes environment and tools
　- kubectl 
　- Minikube
　- Helm
- Already tried Charts 
　- Istio
　- Prometheus/Alertmanager/PushGateway
　- Gitlab
- Create Original Chart 

Transcript

1. Enjoying k8s cluster
   with
   Minikube and Helm
   2019/04/08 # node-1
   @loftkun
   

   View Slide

2. @loftkun
   •
   •
   *(,! $
   • /'.
   • %% ==( 10" )==> WEBSRE
   • )0+-k8s#&
   

   View Slide

3. •
   "
   •
   • !
   

   View Slide

4. Check out
   my Qiita !
   minikube, helm
   
   
   
   
   [PR]
   

   View Slide

5. Agenda
   • My k8s environment and tools
   • kubectl
   • Minikube
   • Helm
   • Already tried Charts
   • Create Original Chart
   

   View Slide

6. My k8s cluster
   environments
   

   View Slide

7. kubectl
   

   View Slide

8. kubectl
   • + ('"()
   
   • ))&(
   
   )* %#
   !*'$)(
   !*'$)(
   '"((
   • &) "* $ $ (# ( '*) $ )% )"
   • GIB@J.()"7632L
   • $ $%, *( ( (%')*) %' ""$#(&(
   • ""$#(&( AGCHJ= 5/;:-7632L
   • 0<6849>6?DGEKF1:-L
   

   View Slide

9. 
   
   $ kubectl –h
   Advanced Commands:
   diff Diff live version against would-be applied version
   apply Apply a configuration to a resource by filename or stdin
   patch Update field(s) of a resource using strategic merge patch
   replace Replace a resource by filename or stdin
   wait Experimental: Wait for a specific condition on one or many resources.
   convert Convert config files between different API versions
   kustomize Build a kustomization target from a directory or a remote url.
   

   View Slide

10. Minikube
    

    View Slide

11. New features
    • v1.0.0 is released at 3/27 !
    •
    
    
    
    • supports Kubernetes 1.14 by default
    • https://kubernetes.io/blog/2019/03/28/running-kubernetes-locally-on-linux-with-
    minikube-now-with-kubernetes-1.14-support/
    
    
    

    View Slide

12. single-node ?
    • Minikube single-node Kubernetes cluster
    • V1.0.0README.md
    
    • https://github.com/kubernetes/minikube/commit/ec5ac30
    

    View Slide

13. Become multi-node support !?
    • Roadmap (2019)
    
    • https://github.com/kubernetes/minikube/blob/master/docs/contributors/roadmap.md
    • #4 Support all Kubernetes features
    • Add multi-node support
    • minikube multi-node cluster
    

    View Slide

14. Setup is Simple ! (on ubuntu 17.10)
    # download
    curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube
    sudo cp minikube /usr/local/bin && rm minikube
    

    View Slide

15. Setup is Simple ! (on ubuntu 17.10)
    # download
    curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube
    sudo cp minikube /usr/local/bin && rm minikube
    # config as you like
    minikube config set cpus 12
    minikube config set memory 40960
    

    View Slide

16. Setup is Simple ! (on ubuntu 17.10)
    # download
    curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube
    sudo cp minikube /usr/local/bin && rm minikube
    # config as you like
    minikube config set cpus 12
    minikube config set memory 40960
    # start cluster
    minikube start
    

    View Slide

17. 
    
    
    
    
    $ kubectl get no
    NAME STATUS ROLES AGE VERSION
    minikube Ready master 10m v1.14.0
    

    View Slide

18. $ kubectl get no
    NAME STATUS ROLES AGE VERSION
    minikube Ready master 10m v1.14.0
    $ kubectl get svc -A
    NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
    default kubernetes ClusterIP 10.96.0.1 443/TCP 10m
    kube-system kube-dns ClusterIP 10.96.0.10 53/UDP,53/TCP,9153/TCP 10m
    kube-system monitoring-grafana NodePort 10.107.133.92 80:30002/TCP 10m
    kube-system monitoring-influxdb ClusterIP 10.109.201.109 8083/TCP,8086/TCP 10m
    
    
    
    
    
    

    View Slide

19. Be careful !
    • Minikube (VM)(&<3?2)
    "'0;24 %
    • Default
    • CPU21-9:<2GB5.2020GB)
    "
    • Spinnaker ( 9:<10GB ) ,57=/*%'9:<
    • 9:<)
    ")
    "
    • minikube config set 18>6#)
    ",
    • !+*&'0;24 !@
    • minikube delete $minikube start
    

    View Slide

20. Tips of Minikube
    • minikubeCPU
    default2
    
    • https://qiita.com/loftkun/items/41ecde082778254de79a
    • minikube default2GB
    • https://qiita.com/loftkun/items/7400d5ae0e7b1fb7d26e
    • Spinnaker + Kayenta
    • https://qiita.com/loftkun/items/2fd1d598d04084495e2c
    

    View Slide

21. Helm
    

    View Slide

22. Overview
    • v2.13.0 is released at 2/27 !
    • https://github.com/helm/helm/releases
    • ! #
    • "!
    • 10.2/+!*%&)'-(%,$3
    • !!
    
    

    View Slide

23. Helm Hub
    https://hub.helm.sh/
    

    View Slide

24. Setup is Simple ! (on ubuntu 17.10)
    # download & install cli
    $ curl https://raw.githubusercontent.com/helm/helm/master/scripts/get | bash
    

    View Slide

25. Setup is Simple ! (on ubuntu 17.10)
    # download & install cli
    $ curl https://raw.githubusercontent.com/helm/helm/master/scripts/get | bash
    # deploy tiller
    $ helm init
    

    View Slide

26. Deploy a Chart (e.g. MongoDB)
    $ helm install stable/mongodb ¥
    --name my-mongo ¥
    --namespace my-mongo ¥
    --set mongodbRootPassword=pass,mongodbUsername=user1,mongodbPassword=pass1,mongodbDatabase=testdb
    

    View Slide

27. Deploy a Chart (e.g. MongoDB)
    $ helm install stable/mongodb ¥
    --name my-mongo ¥
    --namespace my-mongo ¥
    --set mongodbRootPassword=pass,mongodbUsername=user1,mongodbPassword=pass1,mongodbDatabase=testdb
    $ kubectl get svc -n my-mongo
    NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
    my-mongo-mongodb ClusterIP 10.97.82.12 27017/TCP 37s
    

    View Slide

28. Deploy a Chart (e.g. MongoDB)
    $ helm install stable/mongodb ¥
    --name my-mongo ¥
    --namespace my-mongo ¥
    --set mongodbRootPassword=pass,mongodbUsername=user1,mongodbPassword=pass1,mongodbDatabase=testdb
    $ kubectl get svc -n my-mongo
    NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
    my-mongo-mongodb ClusterIP 10.97.82.12 27017/TCP 37s
    $ kubectl get po -n my-mongo
    NAME READY STATUS RESTARTS AGE
    my-mongo-mongodb-5ccffd7cb4-tkrd8 1/1 Running 0 40s
    $
    

    View Slide

29. Already tried
    Charts
    

    View Slide

30. • Grafana
    • Gitlab-ce
    • Minio
    • MongoDB
    • MySQL
    • Prometheus
    • includes alertmanager, pushgateway
    • Spinnaker
    Already tried Charts
    • Istio
    • Kafka
    • GitLab
    • Cloud native images
    • https://docs.gitlab.com/ee/inst
    all/docker.html#cloud-native-
    images
    • loftkun ( )
    • abematv-comment-receiver
    charts/incubator charts/stable 3rd party repo
    

    View Slide

31. • Grafana
    • Gitlab-ce
    • Minio
    • MongoDB
    • MySQL
    • Prometheus
    • includes alertmanager, pushgateway
    • Spinnaker
    Already tried Charts
    • Istio
    • Kafka
    • GitLab
    • Cloud native images
    • https://docs.gitlab.com/ee/inst
    all/docker.html#cloud-native-
    images
    • loftkun ( my original chart )
    • abematv-comment-receiver
    charts/incubator charts/stable 3rd party repo
    Today's
    Pickup
    

    View Slide

32. charts/incubator/istio
    ( Don't use now )
    

    View Slide

33. Be Careful !
    • #$ "% !(*
    • Istio.io ')&
    •
    
    

    View Slide

34. 
    
    
    •
    
    • $ helm fetch stable/spinnaker
    • $ helm template spinnaker-1.1.7.tgz > spinnaker-1.1.7.yaml
    

    View Slide

35. 
    • !$
    • $ helm fetch stable/spinnaker
    • $ helm template spinnaker-1.1.7.tgz > spinnaker-1.1.7.yaml
    •
    $ # " !$
    • $ istioctl kube-inject -f ./spinnaker.yaml > ./spinnaker-injected.yaml
    

    View Slide

36. 
    • $%! )
    
    
    • $ helm fetch stable/spinnaker
    • $ helm template spinnaker-1.1.7.tgz > spinnaker-1.1.7.yaml
    • ) '$&$% )
    • $ istioctl kube-inject -f ./spinnaker.yaml > ./spinnaker-injected.yaml
    • "#(% )+,-*
    • $ kubectl apply -f ./spinnaker-injected.yaml
    

    View Slide

37. Consepts
    

    View Slide

38. Consepts
    • Proxy ( Envoy )
    • Pod
    
    • Automatic Manual
    

    View Slide

39. Consepts
    • Pilot
    • SideCar
    • ! yaml
    • Route
    • blue/green deploy
    • canary release
    •
    •
    •
    •
    
    •
    

    View Slide

40. charts/stable/prometheus
    

    View Slide

41. charts/stable/prometheus
    • 1Chart #%
    • Prometheus / Alertmanager / PushGateway
    • &" !$
    • Prometheus ------> Alertmanager
    • Prometheus ------> scrape targets
    • PushGateway
    • Node, Service, Pod,
    
    

    View Slide

42. GitLab
    ( Cloud native images )
    

    View Slide

43. Cloud native images
    • % $&#
    • $$!# #$ #$ "$ %
    $&
    #
    • *0'1 %##*0+).-1,
    • /(,
    • "$##$$
    • % $&#
    

    View Slide

44. Create Original Chart
    

    View Slide

45. Create New Chart
    $ helm create abematv-comment-receiver
    $ tree abematv-comment-receiver/
    abematv-comment-receiver/
    ├── charts
    ├── Chart.yaml
    ├── templates
    │ ├── deployment.yaml
    │ ├── _helpers.tpl
    │ ├── ingress.yaml
    │ ├── NOTES.txt
    │ ├── service.yaml
    │ └── tests
    │ └── test-connection.yaml
    └── values.yaml
    
    
    
    

    View Slide

46. Fix Chart Info
    ( e.g. image repo, tag )
    $ vim abematv-comment-receiver/values.yaml
    $ cat abematv-comment-receiver/values.yaml
    image:
    repository: loftkun/abematv-comment-receiver
    tag: latest
    $ helm lint abematv-comment-receiver/
    ==> Linting abematv-comment-receiver/
    1 chart(s) linted, no failures
    $
    
    
    
    

    View Slide

47. Deploy !
    $ helm install ./abematv-comment-receiver ¥
    --name abmtest ¥
    --namespace abmtest
    $ kubectl get po -n abmtest
    NAME READY STATUS RESTARTS AGE
    abmtest-abematv-comment-receiver 1/1 Running 0 43s
    $ kubectl logs –f ${podname} -n abmtest
    {"id":"wnBd8uUPeey6BwP8PkkWWS","message":"10"
    !#$ ","createdAtMs":1554630315263}
    
    
    
    
    
    
    
    

    View Slide

48. loftkun/abematv-comment-receiver
    • ")16- %$&03%,05' $
    •
    #)6+. "5(!$
    • )16- : *26/4( https://abema.tv/now-on-air/shogi )
    $ kubectl logs abmtest-abematv-comment-receiver-7775747d65-h8zs2 -n abmtest
    {"id":"XEfQoBeq3LU5Tq4kXTJZ5R","message":"360;?75","createdAtMs":1554630249431}
    {"id":"hn3gbIw0245r908JfrgOcN","message":"'/)<9!'"4-
    
    ,(
    81%.","createdAtMs":1554630274691}
    {"id":"hn3gbIw0245r908JfrgOmx","message":"> 2by","createdAtMs":1554630307015}
    {"id":"wnBd8uUPeey6BwP8PkkWWS","message":"10*+:! # $=&","createdAtMs":1554630315263}
    

    View Slide

49. loftkun/abematv-comment-receiver
    • ,
    • &%+"%.231#*)%
    • MongoDB%!-#.23104/,#*)%
    •
    'Kustomize# *$"(
    

    View Slide

50. Tips of Helm
    • Helm
    • https://qiita.com/loftkun/items/853bbaabd4bf0fa96e9c
    • Pushgateway->Prometheus->Alertmanager->Webhook
    • https://qiita.com/loftkun/items/28cdf77ea9269e255a53
    •
    
    GitLab
    • https://qiita.com/loftkun/items/c3945a2595e4f9c7ba09
    

    View Slide

51. Appendix :
    other trying environments
    

    View Slide

52. Appendix : other trying environments
    • &+"- )-$**
    • "+=4C;0B?>D1?/A
    • '#)')*#+'(
    • 0:2@ '#)83 8< 5;07
    • #* $,*+) < #,+$ ?9;0B6E
    • !++(*...'#)'%()',+*'#)*#+'(
    • '#)
    E'%('*'& ,)&+*=E
    • !++(* "+!,'%'#)'%('*'&#,)&+*
    

    View Slide

53. 
    
    
    

    View Slide