黑猴子的家：Dockerfile镜像管理

Dockerfile镜像管理

1、创建目录结构

[root@node1 ~]# mkdir docker [root@node1 ~]# cd docker [root@node1 docker]# mkdir -p system/centos/ ……. [root@node1 docker]# tree 尖叫提示：Dockerfile要写在gitHub上，防止丢失、方便修改

2、下载EPEL源

[root@node1 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

3、系统层

centos:base

[root@node1 ~]# cd /opt/docker/system/centos [root@node1 centos]# cp /etc/yum.repos.d/epel.repo . [root@node1 centos]# touch Dockerfile [root@node1 centos]# vim Dockerfile #Docker for CentOS #Base images FROM centos #who MAINTAINER Victor.Liu xx@gmail.com #EPEL ADD epel.repo /etc/yum.repo.d/ #Base pkg RUN yum install -y wget mysql-devel git redis tree net-tools sudo psmisc vim epel-release python-setuptools RUN wget --no-check-certificate https://bootstrap.pypa.io/ez_setup.py -O - | sudo python RUN yum install -y supervisor python-pip RUN yum clean all [root@node1 centos]# docker build -t victor/centos:base ./

centos-ssh: latest

[root@node1 ~]# cd /opt/docker/system/centos-ssh [root@node1 centos-ssh]# cp /etc/yum.repos.d/epel.repo ./ [root@node1 centos-ssh]# touch Dockerfile [root@node1 centos-ssh]# vim Dockerfile #Docker for CentOS #Base images FROM victor/centos:base #who MAINTAINER Jason.Zhao xx@gmail.com #EPEL ADD epel.repo /etc/yum.repo.d/ #Base pkg RUN yum install -y openssh-clients openssl-devel openssh-server wget mysql-devel supervisor git redis tree net-tools sudo psmisc vim && yum clean all #For SSHD RUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key RUN ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key RUN echo "root:oldboy" | chpasswd [root@node1 centos-ssh]# docker build -t victor/centos-ssh ./

4、运行环境层

python

[root@node1 ~]# cd /opt/docker/runtime/python [root@node1 python]# vim Dockerfile FROM victor/centos:base #who MAINTAINER Victor.Liu xx@gmail.com RUN yum -y install python-devel python-pip supervisor && yum clean all RUN pip install --upgrade pip [root@node1 python]# docker build -t victor/python ./

python-ssh

[root@node1 ~]# cd /opt/docker/runtime/python-ssh [root@node1 python-ssh]# vim Dockerfile FROM victor/centos-ssh #who MAINTAINER Jason.Zhao xx@gmail.com RUN yum -y install python-devel python-pip supervisor && yum clean all RUN pip install --upgrade pip [root@node1 python-ssh]# docker build -t victor/python-ssh ./

5、服务层

app.py 简单测试代码

[root@node1 ~]# cd /opt/docker/app/shop-app [root@node1 shop-app]# vim app.py from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'Hello World!' if __name__ == "__main__": app.run(host="0.0.0.0", debug=True)

app-supervisor.ini

[root@node1 ~]# cd /opt/docker/app/shop-app [root@node1 shop-app]# vim app-supervisor.ini [program:shop-api] Command=/usr/bin/python2.7 /opt/app.py Process_name=%(program_name)s autostart=true user=root stdout_logfile=/tmp/app.log stderr_logfile=/tmp/app.error [program:sshd] Command=/usr/sbin/sshd -D Process_name=%(program_name)s autostart=true

requirements.txt

[root@node1 ~]# cd /opt/docker/app/shop-app [root@node1 shop-app]# vim requirements.txt flask

supervisord.conf

[root@node1 ~]# cd /opt/docker/app/shop-app [root@node1 shop-app]# cp /etc/supervisord.conf ./ [root@node1 shop-app]# vim supervisord.conf nodaemon=true

Dockerfile

[root@node1 ~]# cd /opt/docker/app/shop-app [root@node1 shop-app]# vim Dockerfile FROM victor/python-ssh #who MAINTAINER Jason.Zhao xx@gmail.com RUN useradd -s /sbin/nologin -M www ADD app.py /opt/app.py ADD requirements.txt /opt/ ADD supervisord.conf /etc/supervisord.conf ADD app-supervisor.ini /etc/supervisord.d/ #whereis pip RUN /usr/bin/pip2.7 install -r /opt/requirements.txt #Port EXPOSE 22 5000 #CMD whereis supervisord CMD ["/usr/bin/supervisord","-c","/etc/supervisord.conf"] [root@node1 shop-app]# docker build victor/shop-api ./

基于镜像启动容器，浏览器访问node1:88，xshell访问node1的8022端口

[root@node1 shop-app]# docker run --name shop-api -d -p 88:5000 -p 8022:22 victor/shop-api