2024.9.14（RC和RS）

一、replicationcontroller （RC）

1、更改镜像站

[root@k8s-master ~]# vim /etc/docker/daemon.json

{"registry-mirrors": ["https://do.nark.eu.org","https://dc.j8.work","https://docker.m.daocloud.io","https://dockerproxy.com","https://docker.mirrors.ustc.edu.cn","https://docker.nju.edu.cn"]
}

2、加载启动docker服务

[root@k8s-master ~]# systemctl daemon-reload
[root@k8s-master ~]# systemctl start docker

3、拉取常用镜像

[root@k8s-master ~]# docker pull centos
[root@k8s-master ~]# docker pull nginx
[root@k8s-master ~]# docker pull mysql:5.7.44

[root@k8s-master ~]# docker pull haproxy

[root@k8s-master ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
haproxy      latest    a782c02b8259   10 days ago    103MB
nginx        latest    39286ab8a5e1   4 weeks ago    188MB
mysql        5.7.44    5107333e08a8   9 months ago   501MB
centos       latest    5d0da3dc9764   2 years ago    231MB

4、使用docker save指令打包镜像

[root@k8s-master ~]# docker save -o centos.tar centos:latest
[root@k8s-master ~]# docker save -o nginx.tar nginx:latest
[root@k8s-master ~]# docker save -o haproxy.tar haproxy:latest
[root@k8s-master ~]# docker save -o mysql.tar mysql:5.7.44

5、使用ctr指令将tar包导入到containerd的镜像中

[root@k8s-master ~]# ctr -n k8s.io images import centos.tar --platform=linux/amd64

[root@k8s-master ~]# ctr -n k8s.io images import nginx.tar --platform=linux/amd64

[root@k8s-master ~]# ctr -n k8s.io images import haproxy.tar --platform=linux/amd64

[root@k8s-master ~]# ctr -n k8s.io images import mysql.tar --platform=linux/amd64

6、查看containerd镜像列表

[root@k8s-master ~]# crictl images

IMAGE                                                                         TAG                 IMAGE ID            SIZE
docker.io/library/centos                                                      latest              5d0da3dc97646       239MB
docker.io/library/haproxy                                                     latest              a782c02b82595       106MB
docker.io/library/mysql                                                       5.7.44              5107333e08a87       520MB
docker.io/library/nginx                                                       latest              39286ab8a5e14       192MB

7、在node1和node2节点上引入tar包

[root@k8s-master ~]# scp /etc/docker/daemon.json root@192.168.8.178:/etc/docker/

[root@k8s-master ~]# scp ~/*.tar root@192.168.8.178:~/
[root@k8s-master ~]# scp mysql.tar root@192.168.8.178:~/
[root@k8s-master ~]# scp nginx.tar root@192.168.8.178:~/
[root@k8s-master ~]# scp haproxy.tar root@192.168.8.178:~/
[root@k8s-master ~]# scp centos.tar root@192.168.8.178:~/
[root@k8s-master ~]# scp /etc/docker/daemon.json root@192.168.8.168:/etc/docker/

[root@k8s-master ~]# scp ~/*.tar root@192.168.8.168:~/

[root@k8s-master ~]# scp centos.tar root@192.168.8.168:~/
[root@k8s-master ~]# scp haproxy.tar root@192.168.8.168:~/
[root@k8s-master ~]# scp nginx.tar root@192.168.8.168:~/
[root@k8s-master ~]# scp mysql.tar root@192.168.8.168:~/

[root@k8s-node2 ~]# systemctl daemon-reload
[root@k8s-node2 ~]# systemctl start docker

[root@k8s-node1 ~]# systemctl daemon-reload
[root@k8s-node1 ~]# systemctl start docker

[root@k8s-node2 ~]# ctr -n k8s.io images import mysql.tar --platform=linux/amd64 //指定平台
[root@k8s-node2 ~]# ctr -n k8s.io images import nginx.tar --platform=linux/amd64
[root@k8s-node2 ~]# ctr -n k8s.io images import haproxy.tar --platform=linux/amd64
[root@k8s-node2 ~]# ctr -n k8s.io images import centos.tar --platform=linux/amd64
[root@k8s-node1 ~]# ctr -n k8s.io images import haproxy.tar --platform=linux/amd64
[root@k8s-node1 ~]# ctr -n k8s.io images import centos.tar --platform=linux/amd64
[root@k8s-node1 ~]# ctr -n k8s.io images import nginx.tar --platform=linux/amd64
[root@k8s-node1 ~]# ctr -n k8s.io images import mysql.tar --platform=linux/amd64

8、是由kubectl run 创建pod

[root@k8s-master ~]# kubectl run test001 --image docker.io/library/nginx:latest --image-pull-policy=IfNotPresent

[root@k8s-master ~]# kubectl get po

NAME                             READY   STATUS    RESTARTS   AGE
test001                          1/1     Running   0          84s

[root@k8s-master ~]# kubectl describe pod test001
[root@k8s-master ~]# kubectl describe pod test001

Events:Type    Reason     Age    From               Message----    ------     ----   ----               -------Normal  Scheduled  2m26s  default-scheduler  Successfully assigned default/test001 to k8s-node1Normal  Pulled     2m25s  kubelet            Container image "docker.io/library/nginx:latest" already present on machineNormal  Created    2m25s  kubelet            Created container test001Normal  Started    2m25s  kubelet            Started container test001

9、使用配置文件创建pod

[root@k8s-master ~]# vim test0007.yaml
apiVersion: v1
kind: Pod
metadata:name: test0007labels:name: test0007
spec:containers:-       name: test0007nginximage: docker.io/library/nginx:latestimagePullPolicy: IfNotPresentports:-       name: nginxportcontainerPort: 80
[root@k8s-master ~]# mv test0007.yaml pods/
[root@k8s-master ~]# cd pods/

[root@k8s-master pods]# kubectl create -f test0007.yaml

[root@k8s-master pods]# kubectl get po
NAME                             READY   STATUS    RESTARTS   AGE
test0007                         1/1     Running   0          4s

10、添加两个容器

[root@k8s-master pods]# kubectl delete -f test0007.yaml
[root@k8s-master pods]# vim test0007.yaml

apiVersion: v1
kind: Pod
metadata:name: test0007labels:name: test0007
spec:containers:-       name: test0007nginximage: docker.io/library/nginx:latestimagePullPolicy: IfNotPresentports:-       name: nginxportcontainerPort: 80-       name: test0007centosimage: docker.io/library/centos:latestimagePullPolicy: Nevercommand:- sleep- infinity

[root@k8s-master pods]# kubectl create -f test0007.yaml

[root@k8s-master pods]# kubectl get po
NAME                             READY   STATUS    RESTARTS   AGE
test0007                         2/2     Running   0          9s

11、监控容器运行的5个切入点

postStart startup lived ready perStop

12、replicationcontroller （RC）

[root@k8s-master pods]# kubectl delete -f test0007.yaml

[root@k8s-master pods]# vim test0007.yaml

# 版本
apiVersion: v1
# 类型
kind: Pod
# 数据
metadata:name: test0007labels:name: test0007
#信息
spec:# 重启策略restartPolicy: OnFailurecontainers:-       name: test0007nginximage: docker.io/library/nginx:latestimagePullPolicy: IfNotPresentports:-       name: nginxportcontainerPort: 80startupProbe:tcpSocket:port: 80initialDelaySeconds: 10timeoutSeconds: 2  #超时periodSeconds: 20successThreshold: 1failureThreshold: 2readinessProbe:httpGet:port: 80path: /index.htmlinitialDelaySeconds: 10timeoutSeconds: 2periodSeconds: 20successThreshold: 1failureThreshold: 2livenessProbe:tcpSocket:port: 80initialDelaySeconds: 10timeoutSeconds: 2periodSeconds: 20successThreshold: 1failureThreshold: 2-       name: test0007centosimage: docker.io/library/centos:latestimagePullPolicy: Nevercommand:- sleep- infinity

[root@k8s-master pods]# kubectl create -f test0007.yaml

[root@k8s-master pods]# vim test0007.yaml

 41                 lifecycle:42                         postStart:43                                 exec:44                                         command:45                                         - sh46                                         - c47                                         - mkdir /data48                         preStop:49                                 exec:50                                         command:51                                         - sh52                                         - c53                                         - pkill nginx;sleep     30;

[root@k8s-master pods]# kubectl delete -f test0007.yaml

[root@k8s-master pods]# kubectl create -f test0007.yaml

[root@k8s-master pods]# vim test0008.yaml

apiVersion: v1
kind: ReplicationController
metadata:name: nginx0
spec:replicas: 3selector:app: nginx0# 模板template:# pod 源数据metadata:# pod名称name: ngixn0# pod标签labels:app: nginx# pod详细信息spec:containers:-       name: nginx0image: docker.io/library/nginx:l
atestimagePullPolicy: Neverports:-       name: containerportcontainerPort: 80

[root@k8s-master pods]# kubectl create -f test0008.yaml
replicationcontroller/nginx0 created
[root@k8s-master pods]# kubectl get po

NAME                             READY   STATUS     RESTARTS      AGE
cluster-test1-54575cf56c-46mb4   1/1     Running    3 (51m ago)   3h59m
nginx0-25xpx                     1/1     Running    0             14s
nginx0-49n2k                     1/1     Running    0             14s
nginx0-6lzvw                     1/1     Running    0             14s

[root@k8s-master pods]# kubectl delete pod nginx0-49n2k //删除后会自动创建
pod "nginx0-49n2k" deleted
[root@k8s-master pods]# kubectl get po

NAME                             READY   STATUS     RESTARTS      AGE
cluster-test1-54575cf56c-46mb4   1/1     Running    3 (52m ago)   4h
nginx0-25xpx                     1/1     Running    0             103s
nginx0-6lzvw                     1/1     Running    0             103s
nginx0-gf22s                     1/1     Running    0             3s
[root@k8s-master pods]# kubectl get po -owide
NAME                             READY   STATUS    RESTARTS      AGE     IP               NODE        NOMINATED NODE   READINESS GATES
cluster-test1-54575cf56c-46mb4   1/1     Running   3 (54m ago)   4h2m    172.16.36.77     k8s-node1   <none>           <none>
nginx0-25xpx                     1/1     Running   0             3m23s   172.16.36.81     k8s-node1   <none>           <none>
nginx0-6lzvw                     1/1     Running   0             3m23s   172.16.169.141   k8s-node2   <none>           <none>
nginx0-gf22s                     1/1     Running   0             103s    172.16.169.143   k8s-node2   <none>           <none>

[root@k8s-master pods]# curl http://172.16.36.81:80

[root@k8s-master pods]# kubectl top node

NAME         CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
k8s-master   159m         7%     1147Mi          66%       
k8s-node1    50m          2%     843Mi           49%       
k8s-node2    58m          2%     897Mi           52%

[root@k8s-master pods]# kubectl delete -f test0008.yaml //根据文件完全删除

[root@k8s-master pods]# kubectl delete replicationcontrollers nginx0 //删除

二、replicaSet

[root@k8s-master pods]# vim test0009.yaml

apiVersion: apps/v1
kind: ReplicaSet
metadata:name: nginx1
apiVersion: apps/v1
kind: ReplicaSet
metadata:name: nginx1
spec:replicas: 3selector:matchLabels:tier: nginx1matchExpressions:-     key: tieroperator: Invalues: [nginx1]template:metadata:name: nginx1labels:app: guestbooktier: nginx1spec:#restartPolicy: OnFailurecontainers:-     name: nginx1image: docker.io/library/nginx:latestimagePullPolicy: Neverports:-     name: nginxportcontainerPort: 80

[root@k8s-master pods]# kubectl create -f test0009.yaml

[root@k8s-master pods]# kubectl get po

NAME                             READY   STATUS    RESTARTS      AGE
cluster-test1-54575cf56c-46mb4   1/1     Running   5 (52s ago)   5h9m
nginx1-jg6lp                     1/1     Running   0             35s
nginx1-r5hlp                     1/1     Running   0             35s
nginx1-s26lm                     1/1     Running   0             35s