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

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

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• " • • !

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Check out my Qiita ! minikube, helm [PR]

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

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My k8s cluster environments

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kubectl

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

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$ 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.

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Minikube

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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/

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

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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

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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

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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

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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

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

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$ 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

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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

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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

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Helm

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

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

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

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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

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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

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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

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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 $

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Already tried Charts

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• 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

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• 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

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

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

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

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• !$ • $ 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

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• $%! ) • $ 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

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Consepts

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Consepts • Proxy ( Envoy ) • Pod • Automatic Manual

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

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charts/stable/prometheus

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

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GitLab ( Cloud native images )

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

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Create Original Chart

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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

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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 $

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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}

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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}

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

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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

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Appendix : other trying environments

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

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