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Linux supervisord process management and automatic restart is like, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

Introduction to supervisord:

Official website: http://supervisord.org/

Github: https://github.com/Supervisor/supervisor

Overview: software features:

This software is a process management system, which can easily manage the system. At the same time, it provides a rich interface for you to manage as you please.

Application scenarios:

Resident task maintenance, management, no matter what language your resident process is written, you can use this artifact to manage

It is used to monitor nginx, redis, mongodb and other software. If the software fails because of an exception, it can restart automatically without terminal service.

To put it simply: daemon, if your process is running all the time, it suddenly dies. So supervisord can help you speed up the process and make it work properly.

Architecture:

Supervisord: server side, which is really used to monitor the process of the program.

Supervisorctl: client, used to manage the process of the monitor program

Installation: description:

I have adopted a self-agreed specification here to facilitate the members of the group to reach a consensus, and there is no cost of learning about service management.

I rely on python to install

Specification:

Software root directory: / data/opt

Shortcut root directory: / data/opt/scripts, where this directory is added to the system PATH. Export PATH='/data/opt/scripts':$PATH

The configuration directory of supervisord and the running log directory are all placed in / data/opt/supervisord

Dependence:

Python

Installation: pip install supervisor configuration fil

"echo_supervisord_conf" command to generate a configuration file, for example

Echo_supervisord_conf > / etc/supervisord.conf configuration management process adds these two sentences [program:python] command=python / tmp/test.py/tmp/test.py file content #! / usr/bin/python#-*-coding: UTF-8-*-import timewhile (True): # 3 seconds time.sleep (1) # Open file fo = open ("/ tmp/test.txt") at the end of / etc/supervisord.conf "a") print "file name is:", fo.name str = time.ctime () + "\ n" fo.write (str) # close the file fo.close () start supervisordsupervisord # enter to start-h you can view the python process by looking at the specific configuration of the parameters

You can see that the content in / tmp/test.txt is increasing.

test

Now we have received the process of killing python test.py.

Kill-9 5535 kills python test.py this process

And then check the progress, and you can see that python test.py appears again.

Let's see that the process number has become 5592.

After reading the above, have you mastered the methods of supervisord process management and automatic restart in Linux? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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