WSL2 Ubuntu 中使用 pip 安装最新版 Supervisor

安装 supervisor

喜爱折腾的小伙伴可以手动折腾一下，不过我还是推荐使用 apt 安装，一行命令能够搞定的事情不要搞的这么复杂，提高效率应该是程序员该有的常识。

sudo apt install supervisor

一行命令完事，虽然不是最新版，但是在一个大版本内，又不是重度用户，没必要纠结。下面是我折腾的过程。

安装 pip

官方文档：https://pip.pypa.io/en/stable/getting-started
使用当前用户安装，程序会被安装在 ~/.local/lib/python*/site-packages/ 目录下，虽然可以执行，但不方便。
使用 sudo 安装，程序会被安装在 /usr/local/lib/ 目录下，可执行文件在 /usr/local/bin/ 目录下，方便使用。

wget https://bootstrap.pypa.io/get-pip.py sudo python3 get-pip.py

安装 supervisor

使用 sudo 安装 pip 才可以使用 sudo pip 安装模块，而且也是在 /usr/local/* 目录下，方便使用

sudo pip install supervisor

创建 supervisord.conf 配置文件

# 创建配置文件目录 
sudo mkdir /etc/supervisor

执行下面这个命令会提示没有权限，官方文档也给出了解决方案，就是先将配置文件释放到有权限的目录中，然后再移动。

# 会报权限问题
echo_supervisord_conf > /etc/supervisor/supervisord.conf

分步骤执行

# 释放到用户目录下
echo_supervisord_conf > ~/supervisord.conf
# 移动到 /etc/supervisor 目录下
sudo mv ~/supervisord.conf /etc/supervisor/supervisord.conf

创建进程配置文件夹

sudo mkdir -p /etc/supervisor/conf.d

修改 supervisord.conf 配置

vim /etc/supervisor/supervisord.conf

添加如下内容，.conf 或者 .ini 都可以，进程配置文件的后缀名与之相同即可

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

添加 supervisor.service 服务

其实就是手动把 apt 安装过程执行一边

vim /lib/systemd/system/supervisor.service

添加以下内容

ExecStart、ExecStop、ExecReload 要指定可执行文件 supervisord 和 supervisorctl 的路径和配置文件 supervisord.conf 的路径。

[Unit]
Description=Supervisor process control system for UNIX
Documentation=http://supervisord.org
After=network.target
[Service]
ExecStart=/usr/local/bin/supervisord -n -c /etc/supervisor/supervisord.conf
ExecStop=/usr/local/bin/supervisorctl $OPTIONS shutdown
ExecReload=/usr/local/bin/supervisorctl -c /etc/supervisor/supervisord.conf $OPTIONS reload
KillMode=process
Restart=on-failure
RestartSec=50s
[Install]
WantedBy=multi-user.target

注册 supervisor.service 服务

两个命令的效果一致

sudo systemctl enable supervisor.service
# 或者
sudo ln -s /usr/lib/systemd/system/supervisor.service /etc/systemd/system/multi-user.target.wants/supervisor.service

创建服务管理脚本

vim /etc/init.d/supervisor

添加以下内容。复制于使用 apt 安装生成的 /etc/init.d/supervisor 文件。

DAEMON 要指定可执行文件 supervisord 的路径 DAEMON_OPTS 要指定配置文件 supervisord.conf 的路径

#! /bin/sh
#
# skeleton      example file to build /etc/init.d/ scripts.
#               This file should be used to construct scripts for /etc/init.d.
#
#               Written by Miquel van Smoorenburg <miquels@cistron.nl>.
#               Modified for Debian
#               by Ian Murdock <imurdock@gnu.ai.mit.edu>.
#               Further changes by Javier Fernandez-Sanguino <jfs@debian.org>
#
# Version:      @(#)skeleton  1.9  26-Feb-2001  miquels@cistron.nl
#
### BEGIN INIT INFO
# Provides:          supervisor
# Required-Start:    $remote_fs $network $named
# Required-Stop:     $remote_fs $network $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/stop supervisor
# Description:       Start/stop supervisor daemon and its configured
#                    subprocesses.
### END INIT INFO
. /lib/lsb/init-functions
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/supervisord
NAME=supervisord
DESC=supervisor
test -x $DAEMON || exit 0
RETRY=TERM/30/KILL/5
LOGDIR=/var/log/supervisor
PIDFILE=/var/run/$NAME.pid
DODTIME=5                   # Time to wait for the server to die, in seconds
# If this value is set too low you might not
# let some servers to die gracefully and
# 'restart' will not work
# Include supervisor defaults if available
if [ -f /etc/default/supervisor ] ; then
. /etc/default/supervisor
fi
DAEMON_OPTS="-c /etc/supervisor/supervisord.conf $DAEMON_OPTS"
set -e
running_pid()
{
# Check if a given process pid's cmdline matches a given name
pid=$1
name=$2
[ -z "$pid" ] && return 1
[ ! -d /proc/$pid ] &&  return 1
(cat /proc/$pid/cmdline | tr "\000" "\n"|grep -q $name) || return 1
return 0
}
running()
{
# Check if the process is running looking at /proc
# (works for all users)
# No pidfile, probably no daemon present
[ ! -f "$PIDFILE" ] && return 1
# Obtain the pid and check it against the binary name
pid=`cat $PIDFILE`
running_pid $pid $DAEMON || return 1
return 0
}
case "$1" in
start)
echo -n "Starting $DESC: "
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--startas $DAEMON -- $DAEMON_OPTS
test -f $PIDFILE || sleep 1
if running ; then
echo "$NAME."
else
echo " ERROR."
fi
;;
stop)
echo -n "Stopping $DESC: "
start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
echo "$NAME."
;;
#reload)
#
#       If the daemon can reload its config files on the fly
#       for example by sending it SIGHUP, do it here.
#
#       If the daemon responds to changes in its config file
#       directly anyway, make this a do-nothing entry.
#
# echo "Reloading $DESC configuration files."
# start-stop-daemon --stop --signal 1 --quiet --pidfile \
#       /var/run/$NAME.pid --exec $DAEMON
#;;
force-reload)
#
#       If the "reload" option is implemented, move the "force-reload"
#       option to the "reload" entry above. If not, "force-reload" is
#       just the same as "restart" except that it does nothing if the
#   daemon isn't already running.
# check wether $DAEMON is running. If so, restart
start-stop-daemon --stop --test --quiet --pidfile $PIDFILE \
--startas $DAEMON \
&& $0 restart \
|| exit 0
;;
restart)
echo -n "Restarting $DESC: "
start-stop-daemon --stop --retry=$RETRY --quiet --oknodo --pidfile $PIDFILE
echo "$NAME."
;;
status)
echo -n "$NAME is "
if running ;  then
echo "running"
else
echo " not running."
exit 1
fi
;;
*)
N=/etc/init.d/$NAME
# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $N {start|stop|restart|force-reload|status}" >&2
exit 1
;;
esac
exit 0

为防止意外，退出 Ubuntu 终端，并在 powershell 中执行 wsl —shutdown 关闭子系统，重新进入。

开启 supervisor

sudo service supervisor start

设置开机启动

如何设置服务开机启动，请参考
在 services 中添加 supervisor 即可！