Enjoying k8s cluster with Minikube and Helm
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2019/04/08 presentation on ふくばねてす
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Enjoying k8s cluster with Minikube and Helm
- 1. Enjoying k8s cluster with Minikube and Helm 2019/04/08 # node-1 @loftkun
- 2. @loftkun • • • • ==( 10 )==> WEB SRE • k8s
- 3. • • •
- 4. Check out my Qiita ! minikube, helm [PR]
- 5. Agenda • My k8s environment and tools • kubectl • Minikube • Helm • Already tried Charts • Create Original Chart
- 7. kubectl
- 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.
- 10. Minikube
- 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/
- 12. single-node ? • Minikube single-node Kubernetes cluster • V1.0.0 README.md • https://github.com/kubernetes/minikube/commit/ec5ac30
- 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
- 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
- 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
- 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
- 17. $ kubectl get no NAME STATUS ROLES AGE VERSION minikube Ready master 10m v1.14.0
- 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 <none> 443/TCP 10m kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 10m kube-system monitoring-grafana NodePort 10.107.133.92 <none> 80:30002/TCP 10m kube-system monitoring-influxdb ClusterIP 10.109.201.109 <none> 8083/TCP,8086/TCP 10m
- 19. Be careful ! • Minikube (VM) • Default • CPU2 2GB 20GB • Spinnaker ( 10GB ) • • minikube config set • • minikube delete minikube start
- 20. Tips of Minikube • minikube CPU default 2 • https://qiita.com/loftkun/items/41ecde082778254de79a • minikube default 2GB • https://qiita.com/loftkun/items/7400d5ae0e7b1fb7d26e • Spinnaker + Kayenta • https://qiita.com/loftkun/items/2fd1d598d04084495e2c
- 21. Helm
- 22. Overview • v2.13.0 is released at 2/27 ! • https://github.com/helm/helm/releases • • • •
- 24. Setup is Simple ! (on ubuntu 17.10) # download & install cli $ curl https://raw.githubusercontent.com/helm/helm/master/scripts/get | bash
- 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
- 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
- 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 <none> 27017/TCP 37s
- 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 <none> 27017/TCP 37s $ kubectl get po -n my-mongo NAME READY STATUS RESTARTS AGE my-mongo-mongodb-5ccffd7cb4-tkrd8 1/1 Running 0 40s $
- 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
- 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
- 32. charts/incubator/istio ( Don't use now )
- 33. Be Careful ! • • Istio.io •
- 34. • • $ helm fetch stable/spinnaker • $ helm template spinnaker-1.1.7.tgz > spinnaker-1.1.7.yaml
- 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
- 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
- 37. Consepts
- 38. Consepts • Proxy ( Envoy ) • Pod • Automatic Manual
- 39. Consepts • Pilot • SideCar • yaml • Route • blue/green deploy • canary release • • • • •
- 41. charts/stable/prometheus • 1Chart • Prometheus / Alertmanager / PushGateway • • Prometheus ------> Alertmanager • Prometheus ------> scrape targets • PushGateway • Node, Service, Pod,
- 42. GitLab ( Cloud native images )
- 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
- 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 $
- 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}
- 48. loftkun/abematv-comment-receiver • • • : ( https://abema.tv/now-on-air/shogi ) $ kubectl logs abmtest-abematv-comment-receiver-7775747d65-h8zs2 -n abmtest {"id":"XEfQoBeq3LU5Tq4kXTJZ5R","message":" ","createdAtMs":1554630249431} {"id":"hn3gbIw0245r908JfrgOcN","message":" ! ","createdAtMs":1554630274691} {"id":"hn3gbIw0245r908JfrgOmx","message":" by ","createdAtMs":1554630307015} {"id":"wnBd8uUPeey6BwP8PkkWWS","message":"10 ","createdAtMs":1554630315263}
- 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
- 51. Appendix : other trying environments
- 52. Appendix : other trying environments • • • • • • • •