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Centos安装supervisor和命令介绍

一、安装

下载最新的supervisor安装包:https://pypi.python.org/pypi/supervisor

 

cd /usr/local/src

wget https://pypi.python.org/packages/7b/17/88adf8cb25f80e2bc0d18e094fcd7ab300632ea00b601cbbbb84c2419eae/supervisor-3.3.2.tar.gz

tar -zxvf supervisor-3.3.2.tar.gz

cd supervisor-3.3.2

python setup.py install

Tips:错误1:ImportError: No module named setuptools

 

## 下载pip
wget https://files.pythonhosted.org/packages/c2/f7/c7b501b783e5a74cf1768bc174ee4fb0a8a6ee5af6afa92274ff964703e0/setuptools-40.8.0.zip
unzip setuptools-40.8.0.zip 
cd setuptools-40.8.0
python setup.py install

Tips:错误2:error: Could not find suitable distribution for Requirement.parse(‘meld3>=0.6.5‘),安装meld扩展

 

wget https://pypi.python.org/packages/45/a0/317c6422b26c12fe0161e936fc35f36552069ba8e6f7ecbd99bbffe32a5f/meld3-1.0.2.tar.gz#md5=3ccc78cd79cffd63a751ad7684c02c91
tar zxvf meld3-1.0.2.tar.gz
cd meld3-1.0.2
python setup.py install

Tips:本地python版本为python3以下

二、配置

1.生成配置文件

echo_supervisord_conf > /etc/supervisord.conf

2.启动

supervisord -c /etc/supervisord.conf

##查看 supervisord 是否在运行:

ps aux | grep supervisord

3.基础配置

(1)打开配置文件

vim /etc/supervisord.conf

(2)在配置文件底部,配置include

[include]
files=/etc/supervisor/*.conf  #若你本地无/etc/supervisor目录,请自建

(3)用supervisor管理进程,配置如下:

cd /etc/supervisor
vim ossfs.conf # 这里的文件名称自定义

(4)加入以下内容:

; 设置进程的名称,使用 supervisorctl 来管理进程时需要使用该进程名
[program:your_program_name] 
command=python server.py --port=9000
;numprocs=1                 ; 默认为1
;process_name=%(program_name)s   ; 默认为 %(program_name)s,即 [program:x] 中的 x
directory=/home/python/tornado_server ; 执行 command 之前,先切换到工作目录
user=oxygen                 ; 使用 oxygen 用户来启动该进程
; 程序崩溃时自动重启,重启次数是有限制的,默认为3次
autorestart=true            
redirect_stderr=true        ; 重定向输出的日志
stdout_logfile = /var/log/supervisord/tornado_server.log
loglevel=info

(5)这里是启动要配置的参数,请根据自己的项目自定义添加
更改了supervisor配置文件,需要重启,运行以下指令:

supervisorctl reload

(6)服务启动

supervisord -c /etc/supervisord.conf 

(7)用浏览器来管理进程配置
打开配置文件

vim /etc/supervisord.conf

配置 inet_http_server

[inet_http_server]       
port=127.0.0.1:9001; 服务器ip
username=username ;自定义
password=password ;自定义

三、supervisorctl的用法

supervisord : 启动supervisor

supervisorctl reload :修改完配置文件后重新启动supervisor

supervisorctl status :查看supervisor监管的进程状态

supervisorctl start all | 进程名 :启动全部或某进程

supervisorctl stop all | 进程名 :停止全部或某进程

supervisorctl stop all:停止进程,注:start、restart、stop都不会载入最新的配置文件。

supervisorctl update:根据最新的配置文件,启动新配置或有改动的进程,配置没有改动的进程不会受影响而重启

四、设置开机启动

(1)添加开机脚本

 

vim /etc/init.d/supervisord

脚本如下:

 

#! /bin/sh
### BEGIN INIT INFO
# Provides:          supervisord
# Required-Start:    $remote_fs
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Example initscript
# Description:       This file should be used to construct scripts to be
#                    placed in /etc/init.d.
### END INIT INFO

# Author: Dan MacKinlay <danielm@phm.gov.au>
# Based on instructions by Bertrand Mathieu
# http://zebert.blogspot.com/2009/05/installing-django-solr-varnish-and.html

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin
DESC="Description of the service"
NAME=supervisord
DAEMON=/usr/local/bin/supervisord
DAEMON_ARGS=" -c /etc/supervisord.conf"
#PIDFILE=/var/run/$NAME.pid
PIDFILE=/tmp/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
    # Return
    #   0 if daemon has been started
    #   1 if daemon was already running
    #   2 if daemon could not be started
    start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
        || return 1
    start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
        $DAEMON_ARGS \
        || return 2
    # Add code here, if necessary, that waits for the process to be ready
    # to handle requests from services started subsequently which depend
    # on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
    # Return
    #   0 if daemon has been stopped
    #   1 if daemon was already stopped
    #   2 if daemon could not be stopped
    #   other if a failure occurred
    start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    # Wait for children to finish too if this is a daemon that forks
    # and if the daemon is only ever run from this initscript.
    # If the above conditions are not satisfied then add some other code
    # that waits for the process to drop all resources that could be
    # needed by services started subsequently.  A last resort is to
    # sleep for some time.
    start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
    [ "$?" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
    #
    # If the daemon can reload its configuration without
    # restarting (for example, when it is sent a SIGHUP),
    # then implement that here.
    #
    start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
    return 0
}

case "$1" in
  start)
    [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
    do_start
    case "$?" in
        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
        2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
    esac
    ;;
  stop)
    [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
    do_stop
    case "$?" in
        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
        2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
    esac
    ;;
  #reload|force-reload)
    #
    # If do_reload() is not implemented then leave this commented out
    # and leave 'force-reload' as an alias for 'restart'.
    #
    #log_daemon_msg "Reloading $DESC" "$NAME"
    #do_reload
    #log_end_msg $?
    #;;
  restart|force-reload)
    #
    # If the "reload" option is implemented then remove the
    # 'force-reload' alias
    #
    log_daemon_msg "Restarting $DESC" "$NAME"
    do_stop
    case "$?" in
      0|1)
        do_start
        case "$?" in
            0) log_end_msg 0 ;;
            1) log_end_msg 1 ;; # Old process is still running
            *) log_end_msg 1 ;; # Failed to start
        esac
        ;;
      *)
        # Failed to stop
        log_end_msg 1
        ;;
    esac
    ;;
  *)
    #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
    echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
    exit 3
    ;;
esac
:

(2)设置该脚本为可以执行

 

sudo chmod +x /etc/init.d/supervisord

(3)设置为开机自动运行

 

sudo update-rc.d supervisord defaults

(4)试一下,是否工作正常

 

service supervisord stop

service supervisord start

若报错:insserv: warning: script ‘service’ missing LSB tags and overrides,请执行:

 

sudo apt-get remove insserv

五、错误排查

1、unix:///var/run/supervisor/supervisor.sock no such file

问题描述:安装好supervisor没有开启服务直接使用supervisorctl报的错
解决办法:启动服务

 

supervisord -c /etc/supervisord.conf 

2、启动了多个supervisord服务,导致无法正常关闭服务

问题描述:多次运行supervisord -c /etc/supervisord.conf 或supervisord,导致有些进程被多个superviord管理,无法正常关闭进程。
解决办法:kill相关的进程。

 

ps -fe | grep supervisord    #查看所有启动过的supervisord服务

kill -9 PID                           #kill相关进程

作者:hfm0922
链接:https://www.jianshu.com/p/38befdf4ace7
来源:简书
著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。

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