Kubernetes Pod 控制器 ReplicaSet
Kubernetes 大约 3279 字查看帮助
kubectl explain ReplicaSet
yml 文件
replicas: 3
:指定运行3
个实例。
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: pc-replicaset
namespace: dev
spec:
replicas: 3
selector:
matchLabels:
app: nginx-pod
template:
metadata:
labels:
app: nginx-pod
spec:
containers:
- name: nginx
image: nginx:1.17.1
查看副本集信息
kubectl get rs -n dev -o wide
输出:
[root@localhost ~]# kubectl get rs -n dev -o wide
NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR
pc-replicaset 3 3 3 10m nginx nginx:1.17.1 app=nginx-pod
查看运行的 Pod
kubectl get pods -n dev -o wide
输出:
[root@localhost ~]# kubectl get pods -n dev -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
pc-replicaset-jv4dn 1/1 Running 0 12m 10.42.0.9 localhost.localdomain <none> <none>
pc-replicaset-9ksk7 1/1 Running 0 12m 10.42.0.11 localhost.localdomain <none> <none>
pc-replicaset-2c5gz 1/1 Running 0 12m 10.42.0.10 localhost.localdomain <none> <none>
扩缩容
edit 方式
使用edit
编辑副本集名为pc-replicaset
的配置。
该命令进入的编辑页面与Vim
用法一致。
kubectl edit rs pc-replicaset -n dev
将replicas
修改为6
,输出:
[root@localhost ~]# kubectl get pods -n dev -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
pc-replicaset-jv4dn 1/1 Running 0 15m 10.42.0.9 localhost.localdomain <none> <none>
pc-replicaset-9ksk7 1/1 Running 0 15m 10.42.0.11 localhost.localdomain <none> <none>
pc-replicaset-2c5gz 1/1 Running 0 15m 10.42.0.10 localhost.localdomain <none> <none>
pc-replicaset-l6shs 1/1 Running 0 2m25s 10.42.0.13 localhost.localdomain <none> <none>
pc-replicaset-zc8fj 1/1 Running 0 2m25s 10.42.0.14 localhost.localdomain <none> <none>
pc-replicaset-wpbpn 1/1 Running 0 2m25s 10.42.0.12 localhost.localdomain <none> <none>
scale 方式
kubectl scale rs pc-replicaset --replicas=2 -n dev
将replicas
调整为2
,输出:
[root@localhost ~]# kubectl get pods -n dev -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
pc-replicaset-jv4dn 1/1 Running 0 19m 10.42.0.9 localhost.localdomain <none> <none>
pc-replicaset-9ksk7 1/1 Running 0 19m 10.42.0.11 localhost.localdomain <none> <none>
镜像升级
备注:也可以使用edit
方式
kubectl set image rs pc-replicaset nginx=nginx:1.17.2 -n dev
查看实例,输出:
[root@localhost ~]# kubectl get rs -n dev -o wide
NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR
pc-replicaset 2 2 2 32m nginx nginx:1.17.2 app=nginx-pod
删除 ReplicaSet
通过名称删除
kubectl delete rs pc-replicaset -n dev
通过yml
文件删除
kubectl delete -f pc-replicaset.yml
阅读 597 · 发布于 2022-03-10
————        END        ————
Give me a Star, Thanks:)
https://github.com/fendoudebb扫描下方二维码关注公众号和小程序↓↓↓

昵称:
随便看看
换一批
-
Java 中 null == 和 == null 判断是否为 null 的区别阅读 2765
-
Java8 引入的时间处理类阅读 1268
-
Vue watch 监听器阅读 88
-
使用 LuaRocks 管理 Lua 依赖阅读 2767
-
Java 并发编程之 Phaser阅读 2219
-
软考各科目介绍阅读 1191
-
Spring Boot @Scheduled 定时任务阅读 4015
-
Vue mixins 复用组件功能阅读 70
-
SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded; try restarting transaction阅读 1996
-
HTML 使用 tabindex 控制 Tab 键按键顺序阅读 238