# 创建脚本，可以在java环境中运行任何的jar包或者war包#!/bin/bash/usr/local/jdk/bin/java -jar /java/src/*.?ar
一、思路分析
（1）nginx
1、下载镜像，将本地的dist项目的目录挂载在容器的/usr/share/nginx/html/ 2、启动容器
3、该项目是一个前后端分离的项目，并非所有的请求都是来自同一个位置，设置请求的时候还是需 要在hosts文件中挟持域名
4、域名是固定的，但是，域名可以绑定不同的ip 5、所以我们设置前端请求发送给一个bu.yuanyu.zhangmin的域名，然后在本机中将域名劫持给我 们的docker服务器，当我们发送请求给该域名时，docker服务器将给我们作出回应
（2）mysql
1、各个版本都有官方的镜像，直接下载docker pull mysql:5.7.44 2、启动容器的时候，挂载data目录
3、制作data的时候，顺⼿删除auto.cnf
（3）tomcat
1、被war包集成，所以我们直接启动war 2、springboot可以直接集成tomcat，build一个jar包或者是war包
3、我们没有安装tomcat 4、application.properties（将tomcat连接数据库）
1、可以配置端口
2、配置数据库的访问
5、使用/usr/local/jdk/bin/java -jar Project_ExamSystem-V1.0.0.war启动，但是在启动这个任务时 一定要跳转到application.properties文件所在目录，因为在启动的同时，还需要加载applicaiton.properties
二、制作docker-compose.yml文件，实现一键部署
1、基础准备（保证基础镜像无问题）
1）下载基础镜像
[root@docker ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 5ef79149e0ec 2 weeks ago 188MB
mysql 5.7.44 5107333e08a8 8 months ago 501MB
centos latest 5d0da3dc9764 2 years ago 231MB
2）创建nginx:v0镜像
[root@docker project_exam_system]# tree web/web/
├── dist
│?? ├── assets
│?? │?? ├── AdminView-yX0Ltz_1.js
│?? │?? ├── CategoryView-Ca4t3JNT.js
│?? │?? ├── CityView-0ESlUfo8.css
│?? │?? ├── CityView-BJTl06GN.js
......
│ ├── TeacherView-Cogr4CCq.js
│ │ ├── TopicView-DFXgxSyC.js
│ │ └── TopicView-Is6fJS__.css
│ ├── favicon.ico
│ └── index.html
└── Dockerfile
[root@docker web]# docker build -t nginx:v0 .[+] Building 0.2s (7/7) FINISHED docker:default
[root@docker ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE
nginx v0 13ccc573fe05 9 seconds ago 189MB
3）创建java:v0镜像
[root@docker project_exam_system]# tree javajava
├── application.properties
├── Dockerfile
├── java.sh
├── jdk
│ ├── bin
│ │ ├── jar
│ │ ├── jarsigner
│ │ ├── java
│ │ ├── javac
......
│ │ ├── rmiregistry.1
│ │ └── serialver.1
│ ├── README
│ └── release
├── jdk-17_linux-x64_bin.tar.gz
└── Project_ExamSystem-V1.0.0.war
[root@docker java]# docker build -t java:v0 .[+] Building 7.2s (9/9) FINISHED docker:default
[root@docker java]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE
java v0 7fae85c42cbe 36 seconds ago 591MB
4）创建mysql:v0镜像
[root@docker project_exam_system]# tree mysql/mysql/
├── Dockerfile
└── project_exam_system.sql0 directories, 2 files
[root@docker mysql]# docker build -t mysql:v0 .[+] Building 0.3s (7/7) FINISHED docker:default
[root@docker mysql]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE
mysql v0 258d8ed442ac 16 seconds ago 512MB5）启动nginx容器
[root@docker ~]# docker run -itd -p80:80 nginx:v0
6）启动java容器
[root@docker ~]# docker run -itd --name java -p8080:8080 java:v0
7）启动mysql容器
[root@docker ~]# docker run -itd --name mysql -p3306:3306 mysql:v08）查看容器状态
[root@docker ~]# docker psCONTAINER ID IMAGE COMMAND CREATED
STATUS PORTS
NAMES
79cc8614e967 mysql:v0 "docker-entrypoint.s…" 9 seconds ago
Up 6 seconds 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp
mysql
29d3ce68ceca java:v0 "/usr/local/jdk/bin/…" 36 seconds ago
Up 34 seconds 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp java
fed2633b259b haproxy:latest "docker-entrypoint.s…" 12 minutes ago
Up 11 minutes 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp
wizardly_edison# 之后这些容器可以全部直接删除[root@docker ~]# docker rm -f 79（容器编号） 29（容器编号） fe（容器编号）
2、配置高可用的项目（使用haproxy调用web和java容器）
1）先创建三个前端项目（nginx容器）
容器在不映射端口时，在远程是无法访问nginx服务，而且现在也不希望外部直接访问nginx，希望 创建nginx服务的集群，这个集群被haproxy代理，创建3个nginx容器，创建一个haproxy服务器，而且
nginx容器还需要指定名称，web0、web1、web2。因为如果没有名称，那么容器就无法被haproxy link到。
# 端口不能映射80，并指定名称[root@docker ~]# docker run -itd --name web0 nginx:v0 45d83cda5bef619b937d25e581db31401841b955f9367dbffbc79a236e632612
[root@docker ~]# docker run -itd --name web1 nginx:v0 b9c80deb9f08a4c2327c1784c8fdb3ab8044c48160ee29102f27e2b52495b9f4
[root@docker ~]# docker run -itd --name web2 nginx:v0 5fbd082f529cdab21b3a2eb74ae6d9560c694fe2a5368e1ad63affe1ad1c93e8# 查看容器状态[root@docker ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5fbd082f529c nginx:v0 "/docker-entrypoint.…" 4 seconds ago Up 3
seconds 80/tcp web2
b9c80deb9f08 nginx:v0 "/docker-entrypoint.…" 8 seconds ago Up 6
seconds 80/tcp web1
45d83cda5bef nginx:v0 "/docker-entrypoint.…" 12 seconds ago Up 11
seconds 80/tcp web0
2）haproxy容器外部测试
在宿主机上安装了haproxy，编辑配置文件，代理三个nginx容器中的web服务，是直接添加容器的
ip地址
# 安装haproxy[root@docker ~]# yum -y install haproxy
# 查看三个nginx容器的IP地址[root@docker ~]# docker inspect 45 | grep IPA"SecondaryIPAddresses": null,"IPAddress": "172.17.0.2","IPAMConfig": null,"IPAddress": "172.17.0.2",
[root@docker ~]# docker inspect b9 | grep IPA"SecondaryIPAddresses": null,"IPAddress": "172.17.0.3","IPAMConfig": null,"IPAddress": "172.17.0.3",
[root@docker ~]# docker inspect 5f | grep IPA"SecondaryIPAddresses": null,"IPAddress": "172.17.0.4","IPAMConfig": null,"IPAddress": "172.17.0.4",# 修改配置文件[root@docker ~]# vim /etc/haproxy/haproxy.cfg
# 注释静态资源# use_backend static if url_static
# 修改轮询模块backend appbalance roundrobinserver app1 172.17.0.2:80 checkserver app2 172.17.0.3:80 checkserver app3 172.17.0.4:80 check# 启动服务[root@docker ~]# haproxy -f /etc/haproxy/haproxy.cfg [root@docker ~]# netstat -lntup | grep 5000tcp 0 0 0.0.0.0:5000 0.0.0.0:* LISTEN 1985/haproxy # 测试访问过后可以直接删除进程来停止服务[root@docker ~]# kill -9 1985（进程号）[root@docker ~]# netstat -lntup | grep 5000
3）创建haproxy容器
创建一个haproxy容器，将配置文件导入到容器，在容器中启动haproxy，也是可以的
# 拉取haprxy镜像[root@docker ~]# docker pull haproxy[root@docker ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZE
haproxy latest 4e5bebb0fd91 7 weeks ago 103MB# 该haproxy.cfg文件是在官方网站里下载下来的[root@docker ~]# vim haproxy.cfg
# 只修改web的轮询模块即可，默认是5000端口，也可修改listen proxy-webbind 0.0.0.0:5000
......server web0 172.17.0.2:80 check weight 1 maxconn 2000server web1 172.17.0.3:80 check weight 1 maxconn 2000server web2 172.17.0.4:80 check weight 1 maxconn 2000[root@docker ~]# docker run -itd -p5000:5000 haproxy:latest /bin/bashfed2633b259b96d3c0ed5e9ca51c031c36b1e21361cb3cf9d57b9d49a9ea1710
[root@docker ~]# docker cp haproxy.cfg fed:/usr/local/etc/haproxySuccessfully copied 5.12kB to fed:/usr/local/etc/haproxy
[root@docker ~]# docker attach fedhaproxy@fed2633b259b:~$ ls /usr/local/etc/haproxy/haproxy.cfg
/usr/local/etc/haproxy/haproxy.cfg# 启动服务haproxy@fed2633b259b:~$ haproxy -f /usr/local/etc/haproxy/haproxy.cfg
4）使用haproxy容器调用web容器
# -itd 交互 终端 后台# link 锚定web容器# v 将配置文件挂载到容器中[root@docker ~]# docker run -itd --link web0 --link web1 --link web2 -
p5000:5000 -v /root/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
haproxy:latest65466d3aef2566512b63690c02e4497ddb7594b8268a26136ec040e2cb858b3b
[root@docker ~]# docker psCONTAINER ID IMAGE COMMAND CREATED
STATUS PORTS NAMES
65466d3aef25 haproxy:latest "docker-entrypoint.s…" 6 seconds ago Up 4
seconds 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp
romantic_curie
79cc8614e967 mysql:v0 "docker-entrypoint.s…" 2 hours ago Up 2
hours 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp mysql
29d3ce68ceca java:v0 "/usr/local/jdk/bin/…" 3 hours ago Up 3
hours 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp java
5fbd082f529c nginx:v0 "/docker-entrypoint.…" 4 hours ago Up 4
hours 80/tcp web2
b9c80deb9f08 nginx:v0 "/docker-entrypoint.…" 4 hours ago Up 4
hours 80/tcp web1
45d83cda5bef nginx:v0 "/docker-entrypoint.…" 4 hours ago Up 4
hours 80/tcp web0# 删除该haproxy容器（使用的是ip地址，要改为使用域名才可以进行link）[root@docker ~]# docker rm -f 65
5）调用haproxy的监控界面（并改ip轮询为域名轮询）
# 只查看即可，创建haproxy服务器容器时将相应端口映射出去就行，记得初始的账户和密码[root@docker ~]# vim haproxy.cfg
######## 监控界面配置 #################listen admin_status# 监控界面访问信息bind 0.0.0.0:8888mode http# URI相对地址stats uri /dbs# 统计报告格式stats realm Global\ statistics# 登录账户信息stats auth admin:123456
[root@docker ~]# vim haproxy.cfgserver web0 web0:80 check weight 1 maxconn 2000server web1 web1:80 check weight 1 maxconn 2000server web2 web2:80 check weight 1 maxconn 2000[root@docker ~]# docker run -itd --link web0 --link web1 --link web2 -
p5000:5000 -p8888:8888 -v
/root/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg haproxy:latest
# 删除该haproxy容器[root@docker ~]# docker rm -f 8af
6）使用haproxy容器调用java容器
[root@docker ~]# docker run -itd --name java0 java:v0283c87bcaea166b017160aa84ce5424dd9baf3ec8fd168a1406f7dc11be3e694
[root@docker ~]# docker run -itd --name java1 java:v0e851f31c87f39c2d028e42b36bd77bcf818a8eb97c9a6cc002656fd1501c0ea6
[root@docker ~]# docker run -itd --name java2 java:v0fb94c87c4fa87d08b0d621157aa33ed74ca459beb32a3c950a7703227ab2f031
[root@docker ~]# vim haproxy.cfg
# 复制一份proxy-web的模块，修改为java模块listen proxy-java# 修改端口为8080bind 0.0.0.0:8080mode http# 负载均衡算法# static-rr 权重, leastconn 最少连接, source 请求IP, 轮询 roundrobinbalance roundrobin# 日志格式option tcplog# 在 mysql 创建一个没有权限的haproxy用户，密码为空。 haproxy用户# create user 'haproxy'@'%' identified by ''; FLUSH PRIVILEGES;#option mysql-check user haproxy# 这里是容器中的IP地址，由于配置的是轮询roundrobin，weight 权重其实没有生效# 修改域名为java域名，端口为java端口server java0 java0:8080 check weight 1 maxconn 2000server java1 java1:8080 check weight 1 maxconn 2000server java2 java2:8080 check weight 1 maxconn 2000#server MYSQL_3 192.168.130.102:3306 check weight 1 maxconn 2000# 使用keepalive检测死链# option tcpka[root@docker ~]# docker run -itd --link web0 --link web1 --link web2 --link
java0 --link java1 --link java2 -p8080:8080 -p5000:5000 -p8888:8888 -v
/root/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg haproxy:lateste5ea894c0f30988604cfd6fe5a48b9a69f14c2c3f2e373fe775c0554f37f19db
# 下载http-tools，使用ab测试承载量[root@docker ~]# yum -y install http-tools[root@docker ~]# ab -n 100 -c 10 http://10.0.0.7:5000/
3、编辑docker-compose.yml文件，一键部署完整项目
新机子：
1）docker-compose环境准备
# 配置docker环境source docker.sh
scp 10.0.0.7:/etc/docker/daemon.json /etc/docker/daemon.jsonvim /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"]
}
systemctl start docker# 安装pip（python包管理器）yum -y install python2-pip# 升级pippip install --upgrade pip==20.3 -i https://mirrors.aliyun.com/pypi/simple# 安装docker-compose[root@compose ~]# pip install docker-compose --ignore-installed requests -i
https://mirrors.aliyun.com/pypi/simple
2）使用compose构建自动化部署文件
# 创建项目目录[root@compose ~]# mkdir -p pes/{java,mysql,web}[root@compose ~]# tree pes/pes/
├── java
├── mysql
└── web3 directories, 0 files
[root@compose ~]# cd pes
# 在项目目录中创建docker-compoce.yml文件[root@compose pes]# vim docker-compose.ymlversion: "3"services:
web:container_name: web0image: nginx:latestports:- "80:80"volumes:- ./web/src/dist/:/usr/share/nginx/html/expose:- 80restart: "always"# mysql:
# container_name: mysql0
# image: mysql:5.7.44
# java:
# container_name: java0
# image: java:v0[root@compose pes]# mkdir -p web/src/[root@compose pes]# scp -r 10.0.0.7:/root/project_exam_system/web/dist
web/src/[root@compose pes]# ls web/src/dist# 拉取nginx镜像[root@compose pes]# docker pull nginxUsing default tag: latest# 执行docker compose命令创建指定容器[root@compose pes]# docker compose up -dWARN[0000] /root/pes/docker-compose.yml: `version` is obsolete
[+] Running 1/1✔ Container web0 Started 0.9s # 查看容器是否正常创建启动[root@compose pes]# docker psCONTAINER ID IMAGE COMMAND CREATED
STATUS PORTS NAMES
5a007ca2fdbe nginx:latest "/docker-entrypoint.…" About a minute ago
Up About a minute 0.0.0.0:80->80/tcp, :::80->80/tcp web0
3）使用docker compose一次性创建多台完全一样的容器
# 查看docker-compose的帮助文档[root@compose ~]# docker-compose --helpscale Set number of containers for a service# 查看docker-compose scale的帮助文档[root@compose ~]# docker-compose scale --helpUsage: scale [options] [SERVICE=NUM...]# 一次性创建多台相同容器时，不能为容器启相同的名称，映射相同的端口，所以需要在yml文件中将这
两行注释掉[root@compose pes]# vim docker-compose.yml version: "3"services:web:#container_name: web0image: nginx:latest#ports:#- "80:80"volumes:- ./web/src/dist/:/usr/share/nginx/html/expose:- 80restart: "always"# 使用scale选项创建3台相同的web容器[root@compose pes]# docker compose up --scale web=3 -dWARN[0000] /root/pes/docker-compose.yml: `version` is obsolete
[+] Running 3/3✔ Container pes-web-3 Started 0.8s ✔ Container pes-web-1 Started 0.5s ✔ Container pes-web-2 Started 1.1s# 查看容器列表[root@compose ~]# docker psCONTAINER ID IMAGE COMMAND CREATED
STATUS PORTS NAMES
dd63d63e1ced nginx:latest "/docker-entrypoint.…" 29 minutes ago Up 29
minutes 80/tcp pes_web_2
12edb14dfae7 nginx:latest "/docker-entrypoint.…" 29 minutes ago Up 29
minutes 80/tcp pes_web_1
89fa62180f85 nginx:latest "/docker-entrypoint.…" 29 minutes ago Up 29
minutes 80/tcp pes_web_3# docker-compose暂停集群[root@compose ~]# cd pes/[root@compose pes]# docker-compose stop/usr/lib/python2.7/site-packages/paramiko/transport.py:33:
CryptographyDeprecationWarning: Python 2 is no longer supported by the Python
core team. Support for it is now deprecated in cryptography, and will be
removed in the next release.from cryptography.hazmat.backends import default_backend
Stopping pes-web-1 ... doneStopping pes-web-3 ... doneStopping pes-web-2 ... done[root@compose pes]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES# docker-compose移除集群[root@compose pes]# docker-compose down/usr/lib/python2.7/site-packages/paramiko/transport.py:33:
CryptographyDeprecationWarning: Python 2 is no longer supported by the Python
core team. Support for it is now deprecated in cryptography, and will be
removed in the next release.from cryptography.hazmat.backends import default_backend
Removing pes-web-1 ... doneRemoving pes-web-3 ... doneRemoving pes-web-2 ... doneRemoving network pes_default
[root@compose pes]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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