Nginx做为服务器，Mongo为数据库支持，Flask为Python语言的Web框架，利用Docker的容器特性，可以简单地部署在linux服务器上
项目准备
项目主要目录如下
__ project-name
|__ docker-file
|__ ningx
|__ Dockerfile
|__ conf
|__ nginx.conf
|__ flask
|__ Dockerfile
|__ requirements.txt
|__ mongo
|__ Dockerfile
|__ setup.sh
|__ docker-compose.yml
|__ src
|__ app
|__ ...
|__ run.py
简要说明
docker-file目录为docker部署的配置文件
src目录为flask应用的python代码
Docker的详细配置
docker-compose配置
version: '2.2'
services:
mongo:
build: ./mongo
volumes:
- "./mongo/db:/data/db"
restart: always
ports:
- "27017:27017"
environment:
MONGO_INITDB_ROOT_USERNAME: root
MONGO_INITDB_ROOT_PASSWORD: 123456
flask:
build: ./flask
links:
- mongo
ports:
- "5000:5000"
expose:
- "5000"
volumes:
- ../src:/home/web
nginx:
build: ./nginx
links:
- flask
volumes:
- "./nginx/log:/var/log/nginx"
- "../:/usr/share/nginx/html"
ports:
- "80:80"
- "8080:8080"
- "443:443"
restart: always
MongoDB的配置
/mongo/Dockerfile的内容如下
FROM mongo:3.6
# 设置时区
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
# 设置工作目录
ENV WORKDIR /usr/local/work
ENV AUTO_RUN_DIR /docker-entrypoint-initdb.d
ENV INSTALL_MONGO_SHELL setup.sh
RUN mkdir -p $WORKDIR
# 复制数据库的初始化命令
COPY ./$INSTALL_MONGO_SHELL $AUTO_RUN_DIR/
RUN chmod +x $AUTO_RUN_DIR/$INSTALL_MONGO_SHELL
/mongo/setup.sh的内容如下
该文件的目的是，启动MongoDB后创建一个密码为test的用户test，并赋予它数据库test的读写操作
#!/bin/bash
mongo <<EOF
use admin;
db.auth('root', '123456');
use dmx_aluminum;
db.createUser({user:'test',pwd:'test',roles:[{role:'readWrite',db:'test'}]});
db.createCollection("user");
EOF
Flask应用的配置
/flask/Dockerfile的内容如下
FROM python:3.6
# 设置时区
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
# 设置工作区
RUN mkdir -p /home/web
WORKDIR /home/web
# 添加依赖
ADD requirements.txt /home/web/requirements.txt
RUN pip3 install -i https://pypi.douban.com/simple/ -r requirements.txt
# 使用gunicorn启动应用
CMD gunicorn -w 4 -b 0.0.0.0:5000 run:app
/src/app/run.py的代码
此处注释了调试用的 app.run()，发布时用gunicorn启动
from app import create_app
app = create_app('default')
app.debug=False
# if __name__ == '__main__':
# app.run()
Nginx的配置
/nginx/Dockerfile的内容如下
FROM nginx:1.14
# 设置时区
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
# 复制配置
COPY conf/nginx.conf /etc/nginx/nginx.conf
/nignx/conf/nginx.conf的内容如下
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
# 开启gzip
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
#gzip_http_version 1.0;
gzip_comp_level 1;
gzip_types text/plain application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;
gzip_vary off;
gzip_disable "MSIE [1-6]\.";
server {
listen 80;
server_name localhost;
keepalive_timeout 5;
root /usr/share/nginx/html;
location /static/ {
alias /usr/share/nginx/html/src/app/static/;
}
location / {
# checks for static file, if not found proxy to app
try_files $uri @flask_app;
}
location @flask_app {
proxy_pass http://192.168.0.2:5000; # 发布在阿里云上，应填写内网IP
proxy_redirect off;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
#proxy_buffers 8 32k;
#proxy_buffer_size 64k;
}
}
}
启动部署
- 进入docker-flie目录 cd docker-flie
- 启动docker docker-compose up
- 查看容器状态 docker ps
- 本地部署浏览器输入 127.0.0.1即可
最后出现类似docker_file_nginx_1,docker_file_mongo_1, docker_file_flask_1的3个容器，说明成功！！！
踩坑吐槽
1 mongol容器中的初始化文件需要放在 docker-entrypoint-initdb.d 目录下
本人做过如下尝试，会显示 mongdb未启动。
ADD setup.sh /data/setup.sh
RUN chmod +x /data/setup.sh
CMD ["/data/setup.sh"]
2 flask应用无法连接mongo，本文使用link方式。
在数据库的配置应相应写成：
MONGODB_SETTINGS = {
'db': 'test',
'host': 'mongo', # 127.0.0.1 host地址一定要写你配置的--link的名字
'username': 'test',
'password': 'test',
'port': 27017
}
本地测试时改回127.0.0.1
3 nginx中配置使用的代理模式，其中执行flask应用的IP，应为内网IP
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
