使用 supervisor 让我们的 web 服务随系统启动

安装

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apt install supervisor

配置文件

默认位置 /etc/supervisor/supervisord.conf

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; supervisor config file

[unix_http_server]
file=/var/run/supervisor.sock ; (the path to the socket file)
chmod=0700 ; sockef file mode (default 0700)

[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor ; ('AUTO' child log dir, default $TEMP)

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix:///var/run/supervisor.sock ; use a unix:// URL for a unix socket

; The [include] section can just contain the "files" setting. This
; setting can list multiple files (separated by whitespace or
; newlines). It can also contain wildcards. The filenames are
; interpreted as relative to this file. Included files *cannot*
; include files themselves.

[include]
files = /etc/supervisor/conf.d/*.conf

关键看最后一句: files = /etc/supervisor/conf.d/*.conf,说明 /etc/supervisor/conf.d/ 下所有以 .conf 为后缀的文件会被自动引入

使用

supervisorctl 需要 root 用户来使用

conf.d 目录下创建一个配置命名为 pyapi.conf

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[program:pyapi]
environment=FLASK_APP=hello.py,FLASK_ENV=development
command=/bin/bash -c "source env/bin/activate && flask run --host=0.0.0.0"
directory=/home/feng/apps/pyapi

user=feng
autostart=true
autorestart=true
stdout_logfile=/var/log/supervisor/pyapi_out.log
stderr_logfile=/var/log/supervisor/pyapi_err.log

为了使我们的服务生效,命令行输入 supervisorctl update 然后回车(因为需要 root 用户来使用,普通用户需要加 sudo

换一种方式使用

使用命令

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supervisorctl

则可以进入 supervisor 控制台(因为需要 root 用户来使用,普通用户需要加 sudo

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supervisor> help

default commands (type help <topic>):
=====================================
add exit open reload restart start tail
avail fg pid remove shutdown status update
clear maintail quit reread signal stop version

想要让我们的服务生效,输入 update 然后回车

想要退出控制台,输入 exit 然后回车

再换一种方式使用

supervisord.conf 里添加 inet_http_server

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[inet_http_server]         ; inet (TCP) server disabled by default
port=*:9001 ; (ip_address:port specifier, *:port for all iface)
username=user ; (default is no username (open server))
password=123 ; (default is no password (open server))

该修改需要重启 supervisor 服务,所以使用 supervisorctl 的方式进入 supervisor 控制台,然后输入 reload 回车