mouWorks / k8s-try

A demo for trying k8s

k8s-demo

• 實作一個 k8s deployment example
• Use minikube for local demo

Requirement:

• kubectl -> main k8s command
• minikube -> for Local k8s env

file Structure

• .env -> 設定檔參數, 請見 .env.example

├── Makefile
├── README.md
├── app
│   ├── deployment.yaml
│   └── service.yaml
├── grafana       
│   ├── data-source-config.yaml
│   ├── deployment.yaml
│   └── service.yaml
└── prometheus
    ├── cluster-role.yaml
    ├── config-map.yaml
    ├── deployment.yaml
    └── service.yaml

Commands:

CREATE

• make k8s_apply : Create Deployment
  • alias: kubectl apply -f deployment.yaml
• make k8s_expose: Create a service based on Deployment
  • alias: kubectl apply -f service.yaml
• make k8s_geturl: Get the service URL

TEARDOWN

• make k8s_destroy: Delete the Service, then delete deployments
  • kubectl delete -f service.yaml && kubectl delete -f deployment.yaml

Add Promethues

• 需要下面幾樣東西
• 使用 namespace=monitoring

└── prometheus
    ├── cluster-role.yaml
    ├── config-map.yaml
    ├── deployment.yaml      -> Deploy 一個 promethues
    └── service.yaml         -> Expose 一個 Service

• Steps:
  • kubectl create namespace monitoring -> Create NameSpace
  • kubectl create -f prometheus/clusterRole.yaml
  • kubectl create -f prometheus/config-map.yaml
  • kubectl create -f prometheus/deployment.yaml -> 建立 deployment
  • kubectl cteate -f prometheus/service.yaml -> 建立 Service

Add Grafana (Monitoring Dashboard)

• 使用 namespace=monitoring
• 需要下面幾樣東西

└── grafana       
    ├── data-source-config.yaml
    ├── deployment.yaml
    └── service.yaml

• Steps:
  • kubectl create -f grafana/datasource-config.yaml
  • kubectl create -f grafana/deployment.yaml -> 建立 deployment
  • kubectl cteate -f grafana/service.yaml -> 建立 Service