container_aria

my file learn about tech container (docker, podman, kubernetes)

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label

• digunakan untuk memberi tanda pada pod, mengorganisir pod
  • memberi informasi tambahan pada pod
  • label tidak hanya digunakan untuk pod, tapi pada semua resources di kubernetes
    • seperti Replication Controler, Replication Set, service
• masukin label harus sederhana tidak boleh ada spasi

configuration

• template ```yaml apiVersion: v1 kind: Pod metadata: name: pod-name labels: label-key1: label-value1 label-key2: label-value2 label-key3: label-value3 spec: containers:
  • name: container-name image: image-name ports:
    • containerPort: 80 ```
• example ```yaml apiVersion: v1 kind: Pod metadata: name: nginx-with-label labels: team: finance version: 1.4.5 environment: production spec: containers:
  • name: nginx image: nginx ports:
    • containerPort: 80 ```

command

• show pod label

  kubectl get pods --show-labels
  

• menambahkan atau mengubah label di pod
• namun tidak disarankan karena nanti beda sama configuration filenya

  # add label
  kubectl label pod nginx env=prod
  
  # change label
  kubectl label pod nginx env=dev --overwrite
  

• mencari label di pod

  kubectl get pods -l key
  kubectl get pods -l key=value
  kubectl get pods -l '!key'
  kubectl get pods -l 'key!=value'
  kubectl get pods -l 'key in (value1, value2)'
  kubectl get pods -l 'key notin (value1, value2, value3)'
  kubectl get pods -l key, key1=value1