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 test001Events: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.yamlapiVersion: 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 poNAME 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 poNAME 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