编写Dockerfile文件
配置yum源
cd /tmp/docker vim Dockerfile FROM rhel7 EXPOSE 80 22 # 向外暴露80和22的端口 COPY dvd.repo /etc/yum.repos.d/dvd.repo && yum install -y httpd openssh-server openssh-clients supervisor && yum clean all && ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -N "" && ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ed25519_key -N "" && echo root:redhat | chpasswd COPY supervisord.conf /etc/supervisord.conf CMD ["/usr/bin/supervisord"]
vim supervisord.conf [supervisord] nodaemon=true [program:sshd] command=/usr/sbin/sshd -D [program:httpd] command=/usr/sbin/httpd
docker build -t rhel7:v3 Sending build context to Docker daemon 8.192 kB Step 1/6 : FROM rhel7 ---> 0a3eb3fde7fd Step 2/6 : EXPOSE 80 22 ---> Running in 5727c9e984a5 ---> e25a8a0821f7 Removing intermediate container 5727c9e984a5 Step 3/6 : COPY dvd.repo /etc/yum.repos.d/dvd.repo ---> 2d9e8f9648a7 Removing intermediate container 62955f7a7a74 Step 4/6 : RUN rpmdb --rebuilddb && yum install -y httpd openssh-server openssh-clients supervisor && yum clean all && ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -N "" && ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N "" && ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ed25519_key -N "" && echo root:redhat | chpasswd Dependency Updated: elfutils-libelf.x86_64 0:0.166-2.el7 Complete! Skipping unreadable repository '///etc/yum.repos.d/rhel7.repo' Cleaning repos: docker dvd-rhel Cleaning up everything ---> 1cb2f9e34bac Removing intermediate container 33cb452dbc8d Step 5/6 : COPY supervisord.conf /etc/supervisord.conf ---> e8de2ff5ca3c Removing intermediate container f219cb2b6a88 Step 6/6 : CMD /usr/bin/supervisord ---> Running in eddfb3973ad2 ---> dbf4cf5cb116 Removing intermediate container eddfb3973ad2 Successfully built dbf4cf5cb116
docker run -d --name vm1 -v /tmp/docker/web/:/var/www/html rhel7:v3
docker ps
docker inspect vm1 "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "126902125dd9c54631622845c1a75d656b45023840c57944ec24f4acecf6dc3f", "EndpointID": "3d995f01fce91968f59b151a19ba3868292efe0a61c2ef355bcd1eb84bda7248", "Gateway": "172.17.0.1", "IPAddress": "172.17.0.2", # 容器的ip "IPPrefixLen": 16, "IPv6Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "MacAddress": "02:42:ac:11:00:02" } }
验证:
curl 172.17.0.2
验证sshd服务:
补充知识:使用Dockerfile构建supervisor容器部署项目,CMD ["supervisord","-c","/etc/supervisord.conf"]执行失败
问题描述:
在编写Dockerfile创建supervisor容器时,最后一条启动supervisor的命令不起作用 -> CMD ["supervisord","-c","/etc/supervisord.conf"],但是进到容器内部执行supervisord -c /etc/supervisord.conf可以成功运行。
先贴出来Dockerfile文件代码
FROM python:latest WORKDIR /root/ RUN mkdir /etc/supervisor RUN mkdir -p /root/projects/logs/gunicorn/ RUN mkdir -p /root/projects/logs/celery/ RUN mkdir -p /root/projects/Sy_EvaluateJkApi/logs/ RUN echo "deb http://mirrors.aliyun.com/debian/ buster main non-free contrib" > /etc/apt/sources.list RUN echo "deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib" /etc/apt/sources.list RUN echo "deb http://mirrors.aliyun.com/debian-security buster/updates main" /etc/apt/sources.list RUN echo "deb-src http://mirrors.aliyun.com/debian-security buster/updates main" /etc/apt/sources.list RUN echo "deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib" /etc/apt/sources.list RUN echo "deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib" /etc/apt/sources.list RUN echo "deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib" /etc/apt/sources.list RUN echo "deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib" /etc/apt/sources.list RUN apt-get update -y RUN apt-get install -y git lrzsz vim RUN pip install supervisor -i https://mirrors.aliyun.com/pypi/simple/ RUN pip install gunicorn -i https://mirrors.aliyun.com/pypi/simple/ RUN pip install gevent -i https://mirrors.aliyun.com/pypi/simple/ RUN /usr/local/bin/echo_supervisord_conf > /etc/supervisord.conf RUN echo "[include]"/etc/supervisord.conf RUN echo "files = /etc/supervisor/*.ini"/etc/supervisord.conf ADD sy.ini /etc/supervisor/sy.ini ADD Sy_EvaluateJkApi /root/projects/Sy_EvaluateJkApi RUN pip3 install -r /root/projects/Sy_EvaluateJkApi/requirements.txt -i https://mirrors.aliyun.com/pypi/simple/ EXPOSE 8800 CMD ["supervisord","-c","/etc/supervisord.conf"]
使用docker build -t system:test . 命令构建容器镜像没有异常,但是使用docker run -itd system:test运行容器就会显示容器不在运行。
解决方式:
把CMD ["supervisord","-c","/etc/supervisord.conf"]命令改成CMD ["supervisord","-n","-c","/etc/supervisord.conf"]就可以成功运行了。
supervisor里是这么写的-n/--nodaemon -- run in the foreground (same as 'nodaemon=true' in config file),加了-n让supervisor在前台保持运行就可以了。
以上这篇supervisor下的Dockerfile的多服务镜像封装操作就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
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