docker-compose实现nginx负载均衡

版权声明：转载请著明出处 https://blog.csdn.net/weixin_40543283/article/details/88805352

环境：

         docker1：rhel7系统，已经安装了docker

         软件：docker-compose  ===>  点击下载 提取码: suef

1.部署使用docker-compose

首先使用了scp命令将docker-compose传到了我的虚拟机

[root@docker1 ~]# ls
docker  docker-compose-Linux-x86_64-1.22.0  images
[root@docker1 ~]# mv docker-compose-Linux-x86_64-1.22.0 /usr/local/bin/docker-compose
[root@docker1 ~]# docker-compose                 ##实验一下，若可以补齐，则为可以使用

2.编写yml文件

[root@docker1 tmp]# cd /tmp/
[root@docker1 tmp]# mkdir docker
[root@docker1 tmp]# cd docker/
[root@docker1 docker]# mkdir compose
[root@docker1 docker]# cd compose/
[root@docker1 compose]# vim docker-compose.yml        ##配置文件

web1:
        image: nginx
        expose:
                - 80
        volumes: 
                - ./web1:/usr/share/nginx/html

web2:
        image: nginx
        expose:
                - 80
        volumes:
                - ./web2:/usr/share/nginx/html

haproxy:
        image: haproxy
        volumes:
                - ./haproxy/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
        links:
                - web1
                - web2
        ports:
                - "80:80"
        expose:
                - "80"

3.编写网页信息

[root@docker1 compose]# mkdir web1
[root@docker1 compose]# mkdir web2
[root@docker1 compose]# echo we1 > web1/index.html         ##两个网页不同内容，以示区分
[root@docker1 compose]# echo we2 > web2/index.html

4.配置haproxy

[root@docker1 compose]# mkdir haproxy
[root@docker1 compose]# cd haproxy/
[root@docker1 haproxy]# vim haproxy.cfg

global
	log 127.0.0.1 local0
	log 127.0.0.1 local1 notice

defaults
	log global
	mode http
	option httplog
	option dontlognull
	timeout connect 5000ms
	timeout client 50000ms
	timeout server 50000ms
	stats uri /status

frontend balancer
	bind 0.0.0.0:80
	default_backend web_backends

backend web_backends
	balance roundrobin
	server server1 web1:80 check
	server server2 web2:80 check

5.导入镜像

如果本来就有镜像，就不用导入了

[root@docker1 images]# docker load -i haproxy.tar
917c0fc99b35: Loading layer  130.9MB/130.9MB
5f70bf18a086: Loading layer  1.024kB/1.024kB
c205bb11f213: Loading layer  4.684MB/4.684MB
ffef890bdf7b: Loading layer  9.549MB/9.549MB
3ec368642ee3: Loading layer  2.048kB/2.048kB
Loaded image: haproxy:latest
[root@docker1 images]# docker load -i nginx.tar
014cf8bfcb2d: Loading layer  58.46MB/58.46MB
832a3ae4ac84: Loading layer  53.91MB/53.91MB
e89b70d28795: Loading layer  3.584kB/3.584kB
Loaded image: nginx:latest

6.运行测试

[root@docker1 compose]# docker-compose up -d
Creating compose_web2_1 ... done
Creating compose_web1_1 ... done
Creating compose_haproxy_1 ... done

如上图成功

7.其他指令

docker-compose start                ##开始docker-compose
docker-compose stop                 ##停止docker-compose
docker-compose rm                   ##删除某个项目