远程访问docker容器_docker运行python程序

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                       Pycharm远程调试服务器中的代码（docker容器内部）

一、首先假设你已启动了一个docker容器，并在启动时将容器的22端口映射到宿主机的10022端口

启动示例：

docker run -d –name django_api -p 8000:80 -p 10022:22 -p 5000:5000 –link mysql_host:mymysql –link redis_host:myredis  -v $PWD:/home/docker/code/app/:Z python3/django/ngnix

 启动后使用xshell远程连接宿主机的10022端口是无法连接成功的，此时我们需要进入docker容器内部进行一些操作：

二、进行容器内部修改

彩蛋：文章最后我会讲解如何修改Dockerfile 使其在建立时就允许ssh远程登陆

docker exec -it 容器名 /bin/bash

1、修改root用户密码

passwd

2、首先检查容器内部是否以安装 openssh-server与openssh-client 若没安装执行一下命令安装

apt-get install openssh-server
apt-get install openssh-client

3、修改SSH配置文件以下选项

vim /etc/ssh/sshd_config

# PermitRootLogin prohibit-password # 默认打开 禁止root用户使用密码登陆，需要将其注释
RSAAuthentication yes #启用 RSA 认证
PubkeyAuthentication yes #启用公钥私钥配对认证方式
PermitRootLogin yes #允许root用户使用ssh登录

4、启动sshd服务

/etc/init.d/ssh restart

 5、退出容器，连接测试

ssh root@127.0.0.1 -p 10022

输入密码成功进入容器内部即配置成功

 6、如若需要将修改后的容器重新保存为镜像，则可进行相应处理，本文直接使用修改后的镜像进行后续操作

三、使用Pycharm远程连接

1、打开配置界面

2、按照远程服务器信息配置信息：配置好后可以点击测试连接测试是否能够连接成功

点击测试连接

将本地的代码和服务器代码连接

 此时便可以远程调试代码了

测试上传本地代码到服务器：

彩蛋：修改Dockerfile 建立镜像时就允许用户通过远程连接

由于我在CMD中启动了 supervisord 此时容器启动后需要手动进入容器启动sshd

/etc/init.d/ssh start

或者将启动命令放入supervisor-app.conf文件中，使其建立容器时就启动

# Copyright 2013 Thatcher Peskens
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

FROM ubuntu:16.04

MAINTAINER Dockerfiles

# Install required packages and remove the apt packages cache when done.

RUN apt-get update && \
apt-get upgrade -y && \
apt-get install -y \
git \
vim \
python3 \
python3-dev \
python3-setuptools \
python3-pip \
nginx \
supervisor \
openssh-server \
sqlite3 && \
pip3 install -U pip setuptools && \
rm -rf /var/lib/apt/lists/*

# 更新pip
RUN pip3 install --upgrade pip
# install uwsgi now because it takes a little while
RUN pip3 install uwsgi
RUN pip3 install meld3==1.0.0
# setup all the configfiles
RUN echo "daemon off;" >> /etc/nginx/nginx.conf

# 设置root用户密码
RUN echo root:hancb|chpasswd

# 允许root用户使用密码通过ssh登录
RUN echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
RUN sed -i 's/PermitRootLogin prohibit-password/# PermitRootLogin prohibit-password/' /etc/ssh/sshd_config

## 启动ssh连接
RUN /etc/init.d/ssh start

COPY nginx-app.conf /home/docker/code/app/
# 将配置文件软连接过去, 注意需要写绝对路径
RUN rm -f /etc/nginx/sites-available/default
RUN ln -s  /home/docker/code/app/nginx-app.conf /etc/nginx/sites-available/default

COPY supervisor-app.conf /home/docker/code/app/
RUN rm -f /etc/supervisor/conf.d/supervisor-app.conf
RUN ln -s /home/docker/code/app/supervisor-app.conf  /etc/supervisor/conf.d/
RUN ln -s /home/docker/code/app/conf/supervisord.conf  /etc/supervisor/conf.d/  # celery

# COPY requirements.txt and RUN pip install BEFORE adding the rest of your code, this will cause Docker's caching mechanism
# to prevent re-installing (all your) dependencies when you made a change a line or two in your app.

COPY requirements.txt /home/docker/code/app/
RUN pip3 install -r /home/docker/code/app/requirements.txt

# 设置默认python版本为python3
# RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 3
# RUN update-alternatives --install /usr/bin/python python /usr/bin/python2 2

# add (the rest of) our code
COPY uwsgi.ini /home/docker/code/app/

COPY uwsgi_params /home/docker/code/app/

# install django, normally you would remove this step because your project would already
# be installed in the code/app/ directory
# RUN django-admin.py startproject website /home/docker/code/app/

EXPOSE 80
CMD ["supervisord", "-n"]