第一. kubectl create命令
[root@k8s-master ~]# kubectl create deployment nginx --image=nginx -o yaml --dry-run #不创建pod,打印出来
W0106 16:21:43.891679 17615 helpers.go:663] --dry-run is deprecated and can be replaced with --dry-run=client.
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: nginx
name: nginx
spec:
replicas: 1
selector:
matchLabels:
app: nginx
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: nginx
spec:
containers:
- image: nginx
name: nginx
resources: {}
status: {}
[root@k8s-master ~]#
ot@k8s-master ~]# kubectl create deployment nginx --image=nginx -o yaml --dry-run=client > nginx.yaml #不创建pod,导出到文件中
[root@k8s-master ~]# ls
nginx.yaml
[root@k8s-master ~]# cat nginx.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: nginx
name: nginx
spec:
replicas: 1
selector:
matchLabels:
app: nginx
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: nginx
spec:
containers:
- image: nginx
name: nginx
resources: {}
status: {}
[root@k8s-master ~]#第二. kubectl get（导出）
[root@k8s-master ~]# kubectl get deploy nginx -o yaml > nginx.yaml #直接导出到文档中，没有创建pod
[root@k8s-master ~]# ls
nginx.yaml
[root@k8s-master ~]# cat nginx.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
creationTimestamp: "2023-01-06T08:25:22Z"
generation: 1
labels:
app: nginx
name: nginx
namespace: default
resourceVersion: "342363"
uid: 680d72b2-9904-43ad-9833-62b05fad8300
spec:
progressDeadlineSeconds: 600
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
app: nginx
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
app: nginx
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: nginx
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
status:
availableReplicas: 1
conditions:
- lastTransitionTime: "2023-01-06T08:25:24Z"
lastUpdateTime: "2023-01-06T08:25:24Z"
message: Deployment has minimum availability.
reason: MinimumReplicasAvailable
status: "True"
type: Available
- lastTransitionTime: "2023-01-06T08:25:22Z"
lastUpdateTime: "2023-01-06T08:25:24Z"
message: ReplicaSet "nginx-748c667d99" has successfully progressed.
reason: NewReplicaSetAvailable
status: "True"
type: Progressing
observedGeneration: 1
readyReplicas: 1
replicas: 1
updatedReplicas: 1
[root@k8s-master ~]#第三. 用命令创建pod
[root@k8s-master ~]# kubectl create deployment nginx --image=nginx #直接创建pod
deployment.apps/nginx created
[root@k8s-master ~]# kubectl get pods,deployments.apps
NAME READY STATUS RESTARTS AGE
pod/nginx-748c667d99-nnnpz 1/1 Running 0 19s
pod/web-7b6955f56f-t8cb9 1/1 Running 0 2d7h
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx 1/1 1 1 19s
deployment.apps/web 1/1 1 1 2d7h
[root@k8s-master ~]#
[root@k8s-master ~]# kubectl expose deployment nginx --port=80 --type=NodePort
service/nginx exposed #直接nginx的service服务
[root@k8s-master ~]# kubectl get pods,svc
NAME READY STATUS RESTARTS AGE
pod/nginx-748c667d99-nnnpz 1/1 Running 0 15m
pod/web-7b6955f56f-t8cb9 1/1 Running 0 2d7h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d23h
service/nginx NodePort 10.109.239.113 <none> 80:21397/TCP 10s
service/web NodePort 10.103.63.38 <none> 80:31960/TCP 2d7h
[root@k8s-master ~]#第四. 验证nginx的pod是否正常
