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
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