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Yyds dry goods inventory kubernetes introduction foundation pod concept and related operations

2022-07-02 04:06:00 【Geek developer】

k8s You can't run the program directly ,k8s The smallest scheduling unit in the cluster is pod,Pod It's the packaging of the container . So we need to use Pod To run the application

The goal of this issue

  • understand Pod Concept
  • see Pod
  • establish Pod
  • Pod visit
  • Delete Pod

1. see Pod

Default query default In namespace Pod

kubectl get pod
#  or 
kubectl get pods

     
    
      
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View... For the specified namespace Pod

kubectl get pods --namespace default
#  or 
kubectl get pods -n default

     
    
      
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See... For all namespaces Pod

kubectl get pods --all-namespaces

     
    
      
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2. establish Pod

Write for creating Pod List of resources file create-pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: pod1
spec:
  containers:
  - name: nginx-pod
    image: nginx:latest
    imagePullPolicy: IfNotPresent
    ports:
    - name: nginxport
      containerPort: 80

     
    
      
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Execute application command , Will be created in the default namespace Pod

kubectl apply -f create-pod.yaml

     
    
      
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To see Pod On which node , You can use the following command 

kubectl get pods -o wide

     
    
      
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This time we created nginx, So you can use access Pod Of IP To verify .

curl http://10.244.1.2

     
    
      
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Get into Pod in 

#  Get into bash
kubectl exec -it POD name  -- bash
#  sign out  bash
exit

     
    
      
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3. Delete Pod

Use the command to delete Pod

#  Delete by default default Under the namespace Pod
kubectl delete pods pod1
#  Or specify namespace deletion 
kubectl delete pods pod1 -n default

     
    
      
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Use the resource list to perform the deletion , If in 2 Created in the Pod, You can use the following command to delete 

kubectl delete -f create-pod.yaml

     
    
      
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本文为[Geek developer]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/02/202202151927135637.html

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