最近blog更新的有点慢了，先补一篇关于supervisord的文章，supervisord使用很久了，那是在还没掌握怎么在linux写编写守护进程之前，不过在会写守护进程之后还是愿意使用supervisord，原因是懒得写代码......

supervisord是一个python程序，所以你的系统中首先要有python，最好是2.7版本，其次supervisord不在默认python库中，需要你手动安装。我的系统是centos6.5，因为忍受不了python2.6，所以系统中使用的是自己打包定制的python2.7，当然顺便把supervisord也给打包进去了，并且包括了supervisord init文件、supervisord conf目录，supervisord sample文件等。看看我自己的python包中默认都加入了哪些第三方lib：

Include:
- python_2.7.11
Include python libs:
- MySQL_python_1.2.4b4
- Fabric_1.10.2
- Setuptools_3.3
- Psutil_0.7.1
- Supervisor_3.2.1
- Paramiko_1.16.0
- Pycrypto_2.6.1
- Meld3_1.0.2
- Ecdsa_0.13
- Cx_Freeze_4.3.4
- Distribute_0.6.28
- Pexpect_4.0.1
- Requests_2.9.1
- Redis_2.10.5
- Sh_1.11
- netifaces_0.10.4

关于Supervisord怎么安装，请看 官网 。

supervisord的使用：

下面看看supervisord的init文件：/etc/init.d/supervisord

#!/bin/bash
#
# /etc/rc.d/init.d/supervisord
# Supervisor is a client/server system that
# allows its users to monitor and control a
# number of processes on UNIX-like operating
# systems.
# chkconfig: - 64 36
# description: Supervisor Server
# processname: supervisord
# Source init functions. /etc/init.d/functionsRETVAL=0
prog="supervisord"
pidfile="/tmp/supervisord.pid"
lockfile="/var/lock/subsys/supervisord"start()
{echo -n $"Starting $prog: "daemon --pidfile $pidfile /usr/local/bin/supervisord -c /etc/supervisord.confRETVAL=$?echo[ $RETVAL -eq 0 ] && touch ${lockfile}
}stop()
{echo -n $"Shutting down $prog: "killproc -p ${pidfile} /usr/local/bin/supervisordRETVAL=$?echoif [ $RETVAL -eq 0 ] ; thenrm -f ${lockfile} ${pidfile}fi
}case "$1" instart)start;;stop)stop;;status)status $prog;;restart)stopstart;;*)echo "Usage: $0 {start|stop|restart|status}";;
esac

注意其中加载的supervisord.conf配置文件路径，以及你的supervisord可执行文件文件路径。

下面看看supervisord的主配置文件：/etc/supervisord.conf

[supervisord]
logfile=/tmp/supervisord.log ; (main log file;default $CWD/supervisord.log)
logfile_maxbytes=50MB        ; (max main logfile bytes b4 rotation;default 50MB)
logfile_backups=10           ; (num of main logfile rotation backups;default 10)
loglevel=info                ; (log level;default info; others: debug,warn,trace)
pidfile=/tmp/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
nodaemon=false               ; (start in foreground if true;default false)
minfds=1024                  ; (min. avail startup file descriptors;default 1024)
minprocs=200                 ; (min. avail process descriptors;default 200)
umask=022                    ; (process file creation umask;default 022)
user=apprun                  ; (default is current user, required if root)
identifier=supervisor        ; (supervisord identifier, default is 'supervisor')
;directory=/tmp              ; (default is not to cd during start)
;nocleanup=true              ; (don't clean up tempfiles at start;default false)
;childlogdir=/tmp            ; ('AUTO' child log dir, default $TEMP)
;environment=KEY="value"     ; (key value pairs to add to environment)
;strip_ansi=false            ; (strip ansi escape codes in logs; def. false)[inet_http_server]
port=0.0.0.0:9001
username=apprun
password=apprun[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface[supervisorctl]
serverurl=http://0.0.0.0:9001
username=apprun
password=apprun
prompt=bd-stg-api-53
history_file=~/.sc_history  [include]
files = /etc/supervisord.conf.d/*.conf

下面看看 supervisord 的项目置文件， /etc/supervisord.conf.d/*.conf

[program:bd-sisyphus-web]
command=/opt/programs/jdk1.8.0_77/bin/java -jar /opt/app/applications/project1/apps/project1.war --server.port=9000
process_name=%(program_name)s
directory=/opt/app/applications/project1
inumprocs=1
autostart=true
autorestart=false
startretries=5
stopsignal=TERM
stopwaitsecs=15
user=apprun
#redirect_stderr=true
stdout_logfile=/opt/app/applications/project1/logs/project1.log
stderr_logfile=/opt/app/applications/project1/logs/project1-error.log
directory=/opt/app/applications/project1

启动supervisord

/etc/init.d/supervisord start

查看supervisord管理的进程：supervisorctl

输入help可以查看可以使用哪些命令。

supervisord-monitor的使用：

supervisord-monitor是一个用来监控supervisord的项目，使用supervisord暴露出来的http接口来监控supervisord。supervisord-monitor是用php写成，项目地址看这里。

下载supervisord-monitor

git clone https://github.com/mlazarov/supervisord-monitor.git

创建配置文件

cp application/config/supervisor.php.example application/config/supervisor.php

修改supervisor.php的supervisor_servers配置

$config['supervisor_servers'] = array('bd-stg-api-53' => array('url' => 'http://10.203.80.53/RPC2','port' => '9001','username' => 'apprun','password' => 'apprun'),
//      'server02' => array(
//              'url' => 'http://server02.app/RPC2',
//               'port' => '9001'
//      ),
//      'server03' => array(
//               'url' => 'http://server03.app/RPC2',
//                'port' => '9001'
//        ),
);

因为我目前只拿一台做实验，所以部署了一台supervisord，如果你有多台机器部署了supervisord，则可以添加多个server信息。

安装nginx、php、php-fpm

yum install nginx php php-fpm

配置nginx配置：supervisord-monitor.conf

server {listen       10.203.50.36:80;server_name  supervisord-monitor.service.bd;access_log   logs/sup-access.log main;error_log    logs/sup-error.log;log_by_lua_file /opt/programs/nginx_1.8.1/lua_script/collect.lua;location / {root   /opt/programs/supervisord-monitor/public_html;index  index.html index.htm index.php;}location ~ .php$ {root /opt/programs/supervisord-monitor/public_html;fastcgi_pass 127.0.0.1:9000;fastcgi_index index.php;fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;include fastcgi_params;}location = /status.json {default_type 'application/json';content_by_lua_file /opt/programs/nginx_1.8.1/lua_script/show.lua;}
}

启动php-fpm、nginx

/etc/init.d/php-fpm start
/etc/init.d/nginx start

访问supervisord-monitor

supervisorclusterctl

有web方式管理supervisord，那就也有命令行方式supervisord了，supervisorclusterctl就是在命令行管理supervisord集群，supervisorclusterctl是依赖ansible来管理supervisord的，也是调用supervisord暴露出来的http接口实现管理。项目地址看这里。

下载supervisorclusterctl

git clone https://github.com/RobWin/supervisorclusterctl.git

安装supervisorclusterctl

cd supervisorclusterctl
python setup.py install

安装ansible

yum install ansible

配置ansble配置文件：ansible.cfg，其余值保持默认即可

[defaults]
inventory      = /etc/ansible/hosts
remote_tmp     = $HOME/.ansible/tmp
pattern        = *
forks          = 5
poll_interval  = 15
sudo_user      = root
transport      = paramiko
remote_port    = 22
module_lang    = C
gathering = implicit
host_key_checking = False
sudo_exe = sudo
timeout = 10
remote_user = apprun
log_path = /var/log/ansible.log
module_name = shell
executable = /bin/bash
private_key_file = /root/.ssh/id_rsa
ansible_managed = Ansible managed: {file} modified on %Y-%m-%d %H:%M:%S by {uid} on {host}
action_plugins     = /usr/share/ansible_plugins/action_plugins
callback_plugins   = /usr/share/ansible_plugins/callback_plugins
connection_plugins = /usr/share/ansible_plugins/connection_plugins
lookup_plugins     = /usr/share/ansible_plugins/lookup_plugins
vars_plugins       = /usr/share/ansible_plugins/vars_plugins
filter_plugins     = /usr/share/ansible_plugins/filter_plugins
fact_caching = memory
[privilege_escalation]
[paramiko_connection]
[ssh_connection]
[accelerate]
accelerate_port = 5099
accelerate_timeout = 30
accelerate_connect_timeout = 5.0
accelerate_daemon_timeout = 30
[selinux]

配置/etc/ansible/hosts，追加如下：

[bd-sisyphus-web]
10.203.80.53

验证supervisorclusterctl