用Docker构建LNMP环境（上）
利用docker搭建lnmp环境（上）小知识：
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docker镜像运行之后变成容器（docker run）
Registry 是Docker镜像的中央存储仓库(pull/push)
https://git.oschina.net/ #从这个地方拉取git的仓库
1.源码克隆到自己的linux服务器上
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# git clone https://git.oschina.net/xxsl/docker-training.git
Initialized empty Git repository in /root/docker-training/.git/
remote: Counting objects: 2045, done.
remote: Compressing objects: 100% (1326/1326), done.
remote: Total 2045 (delta 681), reused 2045 (delta 681)
Receiving objects: 100% (2045/2045), 7.22 MiB | 386 KiB/s, done.
Resolving deltas: 100% (681/681), done.
#
2.创建centos7镜像其余的软件全部基于centos7
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# pwd
/root/docker-training/centos7
# docker build -t csphere/centos:7.1 ./
# dockerimages
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
csphere/centos 7.1 080063d1c72d 6 seconds ago 591.4 MB
jb/jobs03 latest dd40474b2a4c 17 hours ago 1.093 MB
jobs03 latest dd40474b2a4c 17 hours ago 1.093 MB
#
3.解释说明Dockerfile
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# cat Dockerfile
#
# MAINTAINER Carson,C.J.Zeong <zcy@nicescale.com>
# DOCKER-VERSION 1.6.2
#
# Dockerizing CentOS7: Dockerfile for building CentOS images
#
FROM centos:centos7.1.1503
MAINTAINER Carson,C.J.Zeong <zcy@nicescale.com>
ENV TZ "Asia/Shanghai"#ENV环境变量以后在docker容器run指令使用，并在容器运行保持
ENV TERM xterm
ADD aliyun-mirror.repo /etc/yum.repos.d/CentOS-Base.repo
ADD aliyun-epel.repo /etc/yum.repos.d/epel.repo
RUN yum install -y curl wget tar bzip2 unzip vim-enhanced passwd sudo yum-utils hostname net-tools rsync man && \
yum install -y gcc gcc-c++ git make automake cmake patch logrotate python-devel libpng-devel libjpeg-devel && \
yum install -y --enablerepo=epel pwgen python-pip && \
yum clean all
RUN pip install supervisor #RUN执行的指令
ADD supervisord.conf /etc/supervisord.conf #将本地的文件上传至/etc/下命名为supervisord.conf
RUN mkdir -p /etc/supervisor.conf.d && \
mkdir -p /var/log/supervisor
EXPOSE 22#告诉docker服务端容器暴露的端口
ENTRYPOINT ["/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
4.docker使用一个镜像运行一个容器
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dockerrun-d -p2222:22 不管此个容器是否停止 下次系统还是用2222来映射咱们dockefile中的22端口
docker run -d -P2222:22容器重启以后 系统会随机的分配一个 没有使用的端口
--name容器的名字
-d后台
5.创建centos7.1容器
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# docker run -d -p 2222:22 --name base csphere/centos:7.1 #通过csphere/centos:7.1创建一个名字为base放在后台运行的docker容器
55e9793e58c0f70ec2d358d2eeb11e1a1afebe7987d64339da0a30da995ef340#容器的长id号返回来
#
6.查看创建的容器
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# dockerps -a#查看容器
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
55e9793e58c0 csphere/centos:7.1 "/usr/bin/supervisor 2 minutes ago Up 2 minutes 0.0.0.0:2222->22/tcp base
7.创建php的容器（以及运行php的容器）
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# docker build -t csphere/php-fpm:5.4.
最后的内容
Removing intermediate container a3b57f2eb456
Successfully built 38d1572aef94
# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
csphere/php-fpm 5.4 38d1572aef94 36 seconds ago 685 MB
csphere/centos 7.1 080063d1c72d 49 minutes ago 591.4 MB
# docker run -d -p 8080:80 --name website csphere/php-fpm:5.4
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cf1f2bd73808 csphere/php-fpm:5.4 "/usr/bin/supervisor 8 seconds ago Up 8 seconds 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
55e9793e58c0 csphere/centos:7.1 "/usr/bin/supervisor 33 minutes ago Up 33 minutes 0.0.0.0:2222->22/tcp base
测试容器OK
8进入一个docker内部查看
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# dockerexec -it website /bin/bash
# supervisor
supervisorctlsupervisord
# supervisor
supervisorctlsupervisord
# supervisorctl
nginx RUNNING pid 10, uptime 0:07:30
php-fpm RUNNING pid 11, uptime 0:07:30
supervisor> exit
9.创建mysql的容器
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# dockerbuild -t csphere/mysql:5.5 ./
# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
csphere/mysql 5.5 63b2bd2cab97 35 seconds ago 725.1 MB
csphere/php-fpm 5.4 38d1572aef94 33 minutes ago 685 MB
csphere/centos 7.1 080063d1c72d About an hour ago 591.4 MB
# docker run -d -p 3305:3306 --name dbservercsphere/mysql:5.5
36fb44b10702ad1eb38f646e381354ef8b2d832d27b54f8eb3ce5424b6c41e7e
# dockerps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
36fb44b10702 csphere/mysql:5.5 "/scripts/start" 9 seconds ago Up 8 seconds 22/tcp, 0.0.0.0:3305->3306/tcp dbserver
cf1f2bd73808 csphere/php-fpm:5.4 "/usr/bin/supervisor 27 minutes ago Up 27 minutes 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
55e9793e58c0 csphere/centos:7.1 "/usr/bin/supervisor About an hour ago Up About an hour 0.0.0.0:2222->22/tcp base
进入docker容器内部
# dockerexec -it dbserver /bin/bash#进入容器的命令
10-v参数的使用可以挂载一个目录到本地，docker投容器mysql这个容器如果被删除了那么还可以恢复数据数据文件还在的
此处的思想就是：先用-v参数启动一个数据库的docker容器，然后删除容器，再次新建一个数据库的docker容器，，挂载的目录还是原来的目录可以看出数据依然还在
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docker run -d -p 3306:3306-v /var/lib/docker/vfs/dir/mydata:/var/lib/mysqlcsphere/mysql:5.5
docker exec -it e5387295506f/bin/bash
mysql
show databases;
createdatabasemydb ;
# cd /var/lib/docker/vfs/dir/mydata/
# ls
aria_log.00000001ibdata1 ib_logfile1mysql performance_schema
aria_log_control ib_logfile0mydb mysql.socktest
#
准备删除docker容器
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e5387295506f csphere/mysql:5.5 "/scripts/start" 36 minutes ago Up 36 minutes 22/tcp, 0.0.0.0:3306->3306/tcp suspicious_morse
# docker rm -f e5387295506f#强制删除一个容器 也可以dockerstop e5387295506f &&docker rm e5387295506f
e5387295506f
# cd /var/lib/docker/vfs/dir/mydata/ #可以看出容器被删除了但是数据还在
# ls
aria_log.00000001ibdata1 ib_logfile1mysql performance_schema
aria_log_control ib_logfile0mydb mysql.socktest
#
# dockerrun -d -p 3306:3306 --name newdb-v /var/lib/docker/vfs/dir/mydata:/var/lib/mysqlcsphere/mysql:5.5#生成新的数据进行再次挂载
d9dddf959cdfdf7506812b8da258e8ac74e3af5cdf3223bbc26b24fcb2289fee
#
# docker exec -it newdb/bin/bash#再次进入
# mysql
show databases;#可以看出以前创建的数据库还在
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