kubernetes云平台管理实战：如何创建deployment更好（九）

一、文件创建带--record 

1、文件

[root@k8s-master ~]# cat nginx_deploy.yml 
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: nginx 
    spec:
      containers:
      - name: nginx
        image: 10.0.128.0:5000/nginx:1.13
        ports:
        - containerPort: 80

2、启动

[root@k8s-master ~]# kubectl create -f nginx_deploy.yml --record 
deployment "nginx-deployment" created
[root@k8s-master ~]# kubectl get all -o wide
NAME                      DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx-deployment   3         3         3            3           7s

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb

NAME                             DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-deployment-2950479891   3         3         3         7s        nginx          10.0.128.0:5000/nginx:1.13   app=nginx,pod-template-hash=2950479891

NAME                                   READY     STATUS    RESTARTS   AGE       IP            NODE
po/nginx-deployment-2950479891-3dwct   1/1       Running   0          7s        172.16.50.2   k8s-node1
po/nginx-deployment-2950479891-6wvsw   1/1       Running   0          7s        172.16.19.2   k8s-node2
po/nginx-deployment-2950479891-95133   1/1       Running   0          7s        172.16.50.3   k8s-node1

3、更新镜像

[root@k8s-master ~]# vim nginx_deploy.yml 
版本手动修改为1.15
[root@k8s-master ~]# kubectl apply -f nginx_deploy.yml 
deployment "nginx-deployment" configured
[root@k8s-master ~]# kubectl get all -o wide
NAME                      DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx-deployment   3         3         3            3           1m

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb

NAME                             DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-deployment-2950479891   0         0         0         1m        nginx          10.0.128.0:5000/nginx:1.13   app=nginx,pod-template-hash=2950479891
rs/nginx-deployment-3113009173   3         3         3         7s        nginx          10.0.128.0:5000/nginx:1.15   app=nginx,pod-template-hash=3113009173

NAME                                   READY     STATUS    RESTARTS   AGE       IP            NODE
po/nginx-deployment-3113009173-4xrq4   1/1       Running   0          7s        172.16.19.3   k8s-node2
po/nginx-deployment-3113009173-5crv5   1/1       Running   0          5s        172.16.19.2   k8s-node2
po/nginx-deployment-3113009173-vckhg   1/1       Running   0          7s        172.16.50.2   k8s-node1

4、显示历史版本

[root@k8s-master ~]# kubectl rollout history deployment nginx-deployment 
deployments "nginx-deployment"
REVISION	CHANGE-CAUSE
1		kubectl create -f nginx_deploy.yml --record
2		kubectl apply -f nginx_deploy.yml

二、命令行创建不带--record 

1、启动

[root@k8s-master ~]# kubectl delete deployment nginx
deployment "nginx" deleted
[root@k8s-master ~]# kubectl get all -o wide
NAME         CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb

[root@k8s-master ~]# kubectl run nginx --image=10.0.128.0:5000/nginx:1.13 --replicas=5
deployment "nginx" created

[root@k8s-master ~]# kubectl get all -o wide
NAME           DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx   5         5         5            5           7s

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb

NAME                 DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-835034785   5         5         5         7s        nginx          10.0.128.0:5000/nginx:1.13   pod-template-hash=835034785,run=nginx

NAME                       READY     STATUS    RESTARTS   AGE       IP            NODE
po/nginx-835034785-8f4m0   1/1       Running   0          7s        172.16.50.2   k8s-node1
po/nginx-835034785-8j9w2   1/1       Running   0          7s        172.16.19.3   k8s-node2
po/nginx-835034785-c7nx3   1/1       Running   0          7s        172.16.19.4   k8s-node2
po/nginx-835034785-p2vn0   1/1       Running   0          7s        172.16.19.2   k8s-node2
po/nginx-835034785-z42qh   1/1       Running   0          7s        172.16.50.3   k8s-node1

2、更新镜像

[root@k8s-master ~]#  kubectl set image deploy nginx nginx=10.0.128.0:5000/nginx:1.15
deployment "nginx" image updated
[root@k8s-master ~]# kubectl get all -o wide
NAME           DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx   5         5         5            5           34s

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb

NAME                 DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-835034785   0         0         0         34s       nginx          10.0.128.0:5000/nginx:1.13   pod-template-hash=835034785,run=nginx
rs/nginx-984850083   5         5         5         10s       nginx          10.0.128.0:5000/nginx:1.15   pod-template-hash=984850083,run=nginx

NAME                       READY     STATUS    RESTARTS   AGE       IP            NODE
po/nginx-984850083-4pd4w   1/1       Running   0          10s       172.16.19.2   k8s-node2
po/nginx-984850083-k979d   1/1       Running   0          10s       172.16.50.4   k8s-node1
po/nginx-984850083-nljkt   1/1       Running   0          4s        172.16.19.4   k8s-node2
po/nginx-984850083-r3hqh   1/1       Running   0          6s        172.16.19.3   k8s-node2
po/nginx-984850083-x6x47   1/1       Running   0          7s        172.16.50.5   k8s-node1

3、查看历史版本

[root@k8s-master ~]# kubectl rollout history deployment nginx
deployments "nginx"
REVISION	CHANGE-CAUSE
1		<none>
2		<none>

三、命令创建不带--record

1、启动

[root@k8s-master ~]# kubectl run nginx --image=10.0.128.0:5000/nginx:1.13 --replicas=5 --record
deployment "nginx" created
[root@k8s-master ~]# kubectl get all -o wide
NAME           DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx   5         5         5            0           3s
 
NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb
 
NAME                 DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-835034785   5         5         0         3s        nginx          10.0.128.0:5000/nginx:1.13   pod-template-hash=835034785,run=nginx
 
NAME                       READY     STATUS              RESTARTS   AGE       IP        NODE
po/nginx-835034785-b9mnp   0/1       ContainerCreating   0          3s        <none>    k8s-node2
po/nginx-835034785-gp2m5   0/1       ContainerCreating   0          3s        <none>    k8s-node1
po/nginx-835034785-hhz0b   0/1       ContainerCreating   0          3s        <none>    k8s-node1
po/nginx-835034785-mvv4p   0/1       ContainerCreating   0          3s        <none>    k8s-node2
po/nginx-835034785-x6mjp   0/1       ContainerCreating   0          3s        <none>    k8s-node1

2、升级镜像版本

[root@k8s-master ~]#  kubectl set image deploy nginx nginx=10.0.128.0:5000/nginx:1.15
deployment "nginx" image updated
[root@k8s-master ~]# kubectl get all -o wide
NAME           DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/nginx   5         5         5            5           32s
 
NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginx        10.254.145.15   <nodes>       80:30027/TCP   22h       app=myweb
 
NAME                 DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)                     SELECTOR
rs/nginx-835034785   0         0         0         32s       nginx          10.0.128.0:5000/nginx:1.13   pod-template-hash=835034785,run=nginx
rs/nginx-984850083   5         5         5         14s       nginx          10.0.128.0:5000/nginx:1.15   pod-template-hash=984850083,run=nginx
 
NAME                       READY     STATUS    RESTARTS   AGE       IP            NODE
po/nginx-984850083-4xt4s   1/1       Running   0          5s        172.16.50.4   k8s-node1
po/nginx-984850083-gk5fq   1/1       Running   0          7s        172.16.50.2   k8s-node1
po/nginx-984850083-mhp7h   1/1       Running   0          13s       172.16.50.3   k8s-node1
po/nginx-984850083-vs93g   1/1       Running   0          14s       172.16.19.4   k8s-node2
po/nginx-984850083-z5px0   1/1       Running   0          11s       172.16.19.5   k8s-node2

3、查看历史版本

[root@k8s-master ~]# kubectl rollout history deployment nginx
deployments "nginx"
REVISION    CHANGE-CAUSE
1       kubectl run nginx --image=10.0.128.0:5000/nginx:1.13 --replicas=5 --record
2       kubectl set image deploy nginx nginx=10.0.128.0:5000/nginx:1.15

四、小结

1、创建资源方式总结

方式一：

kubectl create -f nginx_deploy.yml

方式二：

kubectl run nginx --image=10.0.128.0:5000/nginx:1.13 --replicas=5 --record

通过以上三个查看历史版本的详细程度来看方式三为最优，建议生产使用，具体命令如下

kubectl run nginx --image=10.0.128.0:5000/nginx:1.13 --replicas=5 --record