【Docker-5】镜像编排-编程知识

【Docker-5】镜像编排

Dockerfile语法

在这里插入图片描述

制作apache镜像

httpd.service 文件路径：/lib/systemd/system/httpd.service

[root@docker-0002 ~]# mkdir apache
[root@docker-0002 ~]# cd apache拷贝动态页面到docker-0002的/root/apache/
[root@ecs-proxy ~]# scp /root/5/public/info.php 192.168.1.32:/root/apache/[root@docker-0002 apache]# echo 'Welcome to The Apache.' > index.html
[root@docker-0002 apache]# tar czf myweb.tar.gz index.html info.php
[root@docker-0002 apache]# vim Dockerfile
FROM mycentos:latest
RUN  yum install -y httpd php && yum clean all
ENV  LANG=C
ADD  myweb.tar.gz /var/www/html/
WORKDIR /var/www/html/
EXPOSE 80
CMD  ["/usr/sbin/httpd", "-DFOREGROUND"]
[root@docker-0002 apache]# docker build -t myapache:latest .

验证镜像

[root@docker-0002 apache]# docker images		#可以看到有myapache的镜像
[root@docker-0002 apache]# docker rm -f $(docker ps -aq)
[root@docker-0002 apache]# docker run -itd --name myhttpd myapache:latest
[root@docker-0002 apache]# curl http://172.17.0.2/
Welcome to The Apache.
[root@docker-0002 apache]# docker rm -f myhttpd
myhttpd

制作phpfpm镜像

#先手工做一遍
[root@docker-0002 apache]# docker run -it mycentos:latest 
[root@dfd4e3d6dd96 /]# yum -y install php-fpm#找service文件
[root@dfd4e3d6dd96 /]# cat /lib/systemd/system/php-fpm.service 
...
ExecStart=/usr/sbin/php-fpm --nodaemonize
...
[root@dfd4e3d6dd96 /]# /usr/sbin/php-fpm --nodaemonize		#前台启动，ctrl + C 终止[root@docker-0002 ~]# mkdir phpfpm
[root@docker-0002 ~]# cd phpfpm
[root@docker-0002 phpfpm]# vim Dockerfile
FROM mycentos:latest
RUN  yum install -y php-fpm && yum clean all
EXPOSE 9000
CMD ["/usr/sbin/php-fpm", "--nodaemonize"]
[root@docker-0002 phpfpm]# docker build -t phpfpm:latest .

验证镜像

启动php-fpm的容器，查看监听端口
[root@docker-0002 phpfpm]# docker images	#有phpfpm的镜像
[root@docker-0002 phpfpm]# docker run -itd --name myphp phpfpm:latest
[root@docker-0002 phpfpm]# docker exec -it myphp ss -antlp
Netid State      Recv-Q Send-Q       Local Address:Port      Peer Address:Port
tcp   LISTEN     0      128              127.0.0.1:9000                 *:*
[root@docker-0002 phpfpm]# docker rm -f myphp

制作nginx镜像

编译软件包

从ecs-proxy主机拷贝nginx的软件包到docker-0002主机
[root@ecs-proxy ~]# scp /root/5/public/nginx-1.17.6.tar.gz  192.168.1.32:/root/
[root@docker-0002 ~]# useradd nginx
[root@docker-0002 ~]# yum install -y gcc make pcre-devel openssl-devel
[root@docker-0002 ~]# tar zxf nginx-1.17.6.tar.gz
[root@docker-0002 ~]# cd nginx-1.17.6/
[root@docker-0002 nginx-1.17.6]# ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_ssl_module
[root@docker-0002 nginx-1.17.6]# make && make install
[root@docker-0002 nginx-1.17.6]# echo 'Nginx is running !' >/usr/local/nginx/html/index.html
[root@docker-0002 nginx-1.17.6]# cd /usr/local
[root@docker-0002 nginx-1.17.6]# tar -czf nginx.tar.gz nginx

制作镜像

[root@docker-0002 ~]# mkdir /root/nginx
[root@docker-0002 ~]# cd /root/nginx
[root@docker-0002 nginx]# cp /usr/local/nginx.tar.gz ./
[root@docker-0002 nginx]# vim Dockerfile 
FROM mycentos:latest
RUN  yum install -y pcre openssl && useradd nginx && yum clean all
ADD  nginx.tar.gz /usr/local/
WORKDIR /usr/local/nginx/html
EXPOSE 80
CMD  ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]
[root@docker-0002 nginx]# docker build -t mynginx:latest .

验证镜像

[root@docker-0002 nginx]# docker images		#有mynginx的镜像
[root@docker-0002 nginx]# docker run -itd --name mynginx mynginx:latest
[root@docker-0002 nginx]# curl http://172.17.0.2/
Nginx is running !
[root@docker-0002 nginx]# docker rm -f mynginx