三、容器编排实战
案例1
第一步:创建yml文件
[root@host1 ~]# vim docker-compose.yml
version: '3'
services:
web:
image: nginx:latest
ports:
- "5000:5000"
links:
- redis
redis:
image: redis
第二步:启动容器
[root@host1 ~]# docker-compose up -d
第三步:查看通过compose启动进程的状态
[root@host1 ~]# docker-compose ps
Name Command State Ports
----------------------------------------------------------------------------------------------------------------------------
root_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp
root_web_1 nginx -g daemon off; Up 0.0.0.0:5000->5000/tcp, 80/tcp
第四步:查看日志信息
[root@host1 ~]# docker-compose logs
第五步:关闭服务
[root@host1 ~]# docker-compose down
Stopping root_web_1 ... done
Stopping root_redis_1 ... done
Removing root_web_1 ... done
Removing root_redis_1 ... done
Removing network root_default
案例2
第一步:创建Dockerfile文件
[root@host1 ~]# vim Dockerfile
#Nginx
#Version 1.0.1
#Author zxhk
#Base image
FROM centos:7
#Maintainer
MAINTAINER zxhk08@qq.com
#Commands
RUN rpm -ivh http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
RUN yum install -y nginx
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx"]
第二步:执行Dockerfile文件
[root@host1 ~]# docker build -t newweb/nginx:v1-1 ./
第三步:构建docker-compose.yml
[root@host1 ~]# vim docker-compose.yml
version: '2'
services:
web1:
image: newweb/nginx:v1.0.1
volumes:
- /data/www1:/usr/share/nginx/html
ports:
- "8080:80"
web2:
image: newweb/nginx:v1.0.1
volumes:
- /data/www2:/usr/share/nginx/html
ports:
- "8081:80"
web3:
image: newweb/nginx:v1.0.1
volumes:
- /data/www3:/usr/share/nginx/html
ports:
- "8082:80"
第四步:开始构建
[root@host1 ~]# docker-compose up -d
第五步:查看通过compose启动进程的状态
[root@host1 ~]# docker-compose ps
第六步:查看日志信息
[root@host1 ~]# docker-compose logs
第七步:关闭服务
[root@host1 ~]# docker-compose down