CentOS deployment represents the first key point flask, and the problems you might encounter, and solutions with a map.
See pictures, you can look at [download], clarity can see the word
【aims】
- LAN can be accessed via url flask written api
- After updating the flask project, automatic deployment
【tool】
Automatic deployment tools involved:
- gitlab
- jenkins
Deployment flask project, involving tools:
- flask Programming
- gunicorn: gunicorn start method flask project
- nginx: nginx clear relationship between gunicorn and, when the browser visits flask-api, behind what happened
- supervisor: Mastering
- linux: Create a file, change directory, installation tools, start / restart / close the tool, see the occupied port number, and, kill the process
[Introduction] Environmental
- flask operating environment:
python3, pip3, python virtual environment
- Deployment environment:
centOS7
【Steps】
Configuration gunicorn:
1. Create a virtual environment, and download gunicorn (pip install gunicorn)
2. Create gunicorn boot files in the root directory of the project, wsgi.py, reads as follows:
from app import create_app
application = create_app()
if __name__ == '__main__':
application.run()
3. Start command:
gunicorn -w 4 -b 127.0.0.1:8000 wsgi:application
Validation results:
By this time the command request url, you can see the response results. So it is a good distribution gunicorn
curl http://127.0.0.1:8000 /users
Configuring nginx:
Install nginx:
yum -y install nginx
If prompted package is not available, the solution: 7 under Centos install nginx, use yum install nginx, suggesting the package is not available
If it fails to start nginx, because the port number 80 is occupied, the solution: centos7 ngxin failed to start: Job for nginx.service failed (80-port solution is occupied)
Validation results:
After starting nginx, open your browser and enter http://10.2.1.92:8001(8001 port nginx is used)
See the following interface, represents a complete environment to build nginx
Configuration using nginx proxy gunicorn Service
Referring to the specific configuration: gunicorn configuration Nginx +
Validation results:
Before the verification results, make sure gunicorn is started
Configuration management supervisor gunicorn process (start | restart | Close)
Finally, use the supervisor to start gunicorn background processes, or turn off a command window, gunicorn process was also killed, of course, not everyone wants to see results
The supervisor configuration, with reference to the use of the supervisor
Validation results:
After starting gunicorn by supervisor, turn off the command line window, noted that access address A / routing address (A address what, referring to the FIG.), See the correct response result indicating successfully launched supervisor gunicorn
Such nginx + gunicorn + supervisor deployment flask project is configured.
Configure project updates, automatic deployment:
如果想要实现更新flask项目，自动布署，可以借助jenkins与gitlab的web-hook功能。
具体配置方法（只看前面与gitlab的配置即可，后面写的很乱，不用看）：如何创建一个项目,让gitlab自动触发jenkins进行构建
验证结果：
在项目中新建1个测试文件：test.py，提交到仓库
在服务器~/.jenkins/workspace/job名称下查看，也存在test.py文件，即表示自动布署配置成功
具体的配置不太清楚时，可以看看这1篇，写的很乱，但可能会记录一些具体配置