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supervisor下的Dockerfile的多服务镜像封装操作
服务器 2024/11/15 佚名
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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

supervisor下的Dockerfile的多服务镜像封装操作

docker run -d --name vm1 -v /tmp/docker/web/:/var/www/html rhel7:v3

docker ps

supervisor下的Dockerfile的多服务镜像封装操作

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"
        }
      }

supervisor下的Dockerfile的多服务镜像封装操作

验证：

curl 172.17.0.2

supervisor下的Dockerfile的多服务镜像封装操作

验证sshd服务：

supervisor下的Dockerfile的多服务镜像封装操作

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。

标签：
supervisor,Dockerfile,多服务镜像封装
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