【运维知识大神篇】运维界的超神器Kubernetes教程4，事已至此，来一波实战吧！（整合项目进镜像+打包项目成镜像+将Docker项目上K8s集群）
发布时间：2024年01月16日
本篇文章给大家分享实战项目，干货满满，速来学习！
目录
实战1：整合项目进镜像
实战项目需求
将"斗地主"，"电风扇"，"坦克大战"游戏合并到"harbor.koten.com/koten-games/games:v0.5"中，要求如下:
1、使用configMap资源存储配置文件并挂载;
2、尽可能的将镜像压缩到300M以下，体积越小越好;
3、合并后打包为harbor.koten.com/koten-games/games:v0.6，上传至私有harbor编写configMap资源并运行
[root@Master231 configMap]# cat 03-cm-game.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: games-conf
# 指定cm的数据
data:
games-conf: |
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/bird/;
server_name game01.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/pinshu/;
server_name game02.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/tanke/;
server_name game03.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/chengbao/;
server_name game04.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/motuo/;
server_name game05.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/liferestart/;
server_name game06.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/huangjinkuanggong/;
server_name game07.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/feijidazhan/;
server_name game08.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/zhiwudazhanjiangshi/;
server_name game09.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/xiaobawang/;
server_name game10.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/pingtai/;
server_name game11.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/dayu/;
server_name game12.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/maliao/;
server_name game13.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/menghuanmonizhan/;
server_name game14.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/qieshuiguo/;
server_name game15.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/wangzhezhicheng/;
server_name game16.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/zhiwuVSjiangshi/;
server_name game17.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/killbird/;
server_name game18.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/dianfengshan/;
server_name game19.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/doudizhu/;
server_name game20.koten.com;
}
server {
listen 0.0.0.0:80;
root /usr/local/nginx/html/tankedazhan/;
server_name game21.koten.com;
}
[root@Master231 configMap]# kubectl apply -f 03-cm-game.yaml
configmap/games-conf created编写资源清单并运行
[root@Master231 pod]# cat 19-pods-games-cm4.yaml
apiVersion: v1
kind: Pod
metadata:
name: koten-games-004
spec:
nodeName: worker232
volumes:
- name: data
configMap:
name: games-conf
items:
- key: games-conf
path: games.conf
containers:
- name: games
image: harbor.koten.com/koten-games/games:v0.5
volumeMounts:
- name: data
mountPath: /etc/nginx/conf.d
[root@Master231 pod]# kubectl apply -f 19-pods-games-cm4.yaml
pod/koten-games-004 created
[root@Master231 pod]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
koten-games-004 1/1 Running 0 17s 10.100.1.58 worker232 <none> <none>
拷贝代码目录进容器中
[root@Master231 pod]# kubectl cp doudizhu koten-games-004:/usr/local/nginx/html/
[root@Master231 pod]# kubectl cp tankedazhan koten-games-004:/usr/local/nginx/html/
[root@Master231 pod]# kubectl cp dianfengshan koten-games-004:/usr/local/nginx/html/
测试能否正常访问
[root@Master231 pod]# curl -sH 'host:game19.koten.com' 10.100.1.58|grep 风扇
<div class="logo">风扇</div>
[root@Master231 pod]# curl -sH 'host:game20.koten.com' 10.100.1.58
<!DOCTYPE html><html><head><meta charset=utf-8><meta http-equiv=X-UA-Compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1"><title>Vue App</title><link href=css/app.9b54c2ac.css rel=preload as=style><link href=js/app.b948232d.js rel=preload as=script><link href=js/chunk-vendors.fc173c6b.js rel=preload as=script><link href=css/app.9b54c2ac.css rel=stylesheet></head><body><div id=app></div><script src=js/chunk-vendors.fc173c6b.js></script><script src=js/app.b948232d.js></script></body></html>
[root@Master231 pod]# curl -sH 'host:game21.koten.com' 10.100.1.58|grep tank
<script src="js/tank.js"></script>
<canvas id="tankCanvas" ></canvas>进入镜像中清空下下nginx日志，减少镜像体积，可做可不做，减少不了多少也
[root@Master231 configMap]# kubectl exec -it koten-games-004 -- sh
/ # > /var/log/nginx/access.log
/ # > /var/log/nginx/error.log
打包镜像并推送至harbor，发现为295MB，也算是完成任务了
[root@Worker232 ~]# docker commit 7fc657d0608c harbor.koten.com/koten-games/games:v0.6
sha256:30ec3e6e47473e8992c92e1b86cd03191fe9c9dee7e88982bda69df623f61843
[root@Worker232 ~]# docker images |grep v0.6
harbor.koten.com/koten-games/games v0.6 30ec3e6e4747 2 seconds ago 295MB
[root@Worker232 ~]# docker push harbor.koten.com/koten-games/games:v0.6
运行镜像，windows进行hosts解析，浏览器访问是否正常
[root@Master231 pod]# cat 20-pods-games-cm5.yaml
apiVersion: v1
kind: Pod
metadata:
name: koten-games-005
spec:
nodeName: worker232
volumes:
- name: data
configMap:
name: games-conf
items:
- key: games-conf
path: games.conf
containers:
- name: games
image: harbor.koten.com/koten-games/games:v0.6
ports:
- containerPort: 80
hostPort: 80
volumeMounts:
- name: data
mountPath: /etc/nginx/conf.d
[root@Master231 pod]# kubectl apply -f 20-pods-games-cm5.yaml
pod/koten-games-005 created
实战2：打包项目成镜像，将Docker项目上K8s集群
实战项目需求
项目地址：https://github.com/luozhihao/vue-puzzle/tree/master
1、将github的拼图游戏下载到Linux，打包成docker镜像
2、将docker镜像部署到k8s集群
3、要求用到Pod和configMap，映射到本机的88端口打包项目成镜像
[root@Worker232 ~]# docker run -id harbor.koten.com/koten-web/nginx:1.24.0-alpine
9d3f2ad7395a211cf155b54f190a95a7c2ae3018b1bfa17deb58ad613bdb9d86
[root@Worker232 ~]# docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9d3f2ad7395a harbor.koten.com/koten-web/nginx:1.24.0-alpine "/docker-entrypoint.…" 4 seconds ago Up 3 seconds 80/tcp affectionate_ellis
[root@Worker232 ~]# docker cp vue-puzzle-master 9d3f2ad7395:/usr/share/nginx/html
[root@Worker232 ~]# docker exec -it 9d3f2ad7395 sh
...... # 将代码目录整理成如下所示
/usr/share/nginx/html # ls
README.md index.html src
dist package.json webpack.config.js
# 打包成镜像推送至harbor仓库
[root@Worker232 ~]# docker commit 9d3f2ad7395 harbor.koten.com/koten-games/game_number:v1.0
[root@Worker232 ~]# docker push harbor.koten.com/koten-games/game_number:v1.0
将docker项目上k8s集群，编写资源清单
[root@Master231 pod]# cat 23-pods-game.yaml
apiVersion: v1
kind: Pod
metadata:
name: game-number-001
spec:
nodeName: worker232
hostNetwork: true
containers:
- name: web
image: harbor.koten.com/koten-games/game_number:v1.0
---
apiVersion: v1
kind: Pod
metadata:
name: game-number-002
spec:
nodeName: worker233
hostNetwork: true
containers:
- name: web
image: harbor.koten.com/koten-games/game_number:v1.0
运行资源清单并查看效果
[root@Master231 pod]# kubectl apply -f 23-pods-game.yaml
pod/game-number-001 created
pod/game-number-002 created
[root@Master231 pod]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
game-number-001 1/1 Running 0 62s 10.0.0.232 worker232 <none> <none>
game-number-002 1/1 Running 0 62s 10.0.0.233 worker233 <none> <none>
当然这样起不到集群效果，因客户访问只能在一个IP上去访问，所以我们还需要做负载均衡去进行流量的分发处理，后面文章会介绍。
还需要使用configMap进行端口映射
[root@Master231 configMap]# cat 04-cm-game.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: default.conf
# 指定cm的数据
data:
game-conf: |
server {
listen 0.0.0.0:88;
root /usr/share/nginx/html;
server_name game.koten.com;
}
[root@Master231 configMap]# kubectl apply -f 04-cm-game.yaml
configmap/default.conf created
修改资源清单
[root@Master231 pod]# cat 23-pods-game.yaml
apiVersion: v1
kind: Pod
metadata:
name: game-number-001
spec:
volumes:
- name: data
configMap:
name: default.conf
items:
- key: game-conf
path: game.conf
nodeName: worker232
hostNetwork: true
containers:
- name: web
image: harbor.koten.com/koten-games/game_number:v1.0
volumeMounts:
- name: data
mountPath: /etc/nginx/conf.d
---
apiVersion: v1
kind: Pod
metadata:
name: game-number-002
spec:
volumes:
- name: data
configMap:
name: default.conf
items:
- key: game-conf
path: game.conf
nodeName: worker233
hostNetwork: true
containers:
- name: web
image: harbor.koten.com/koten-games/game_number:v1.0
volumeMounts:
- name: data
mountPath: /etc/nginx/conf.d
运行资源清单并查看效果
[root@Master231 pod]# kubectl apply -f 23-pods-game.yaml
pod/game-number-001 created
pod/game-number-002 created
[root@Master231 pod]# kubectl get pods
NAME READY STATUS RESTARTS AGE
game-number-001 1/1 Running 0 4s
game-number-002 1/1 Running 0 4s
端口成功修改，访问没有问题。
我是koten，10年运维经验，持续分享运维干货，感谢大家的阅读和关注！
文章来源:https://blog.csdn.net/qq_37510195/article/details/131262880
本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。 如若内容造成侵权/违法违规/事实不符，请联系我的编程经验分享网邮箱：chenni525@qq.com进行投诉反馈，一经查实，立即删除！
本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。 如若内容造成侵权/违法违规/事实不符，请联系我的编程经验分享网邮箱：chenni525@qq.com进行投诉反馈，一经查实，立即删除！
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