lee-z/supervisor

Supervisor install

Supervisor

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Supervisor

一个运行在类Unix系统下的进程管理系统工具

• 由Python进行编写

• 采用C/S结构：

  • supervisord是服务进程
  • supervisorctl是客户端管理工具

• 使用ini格式的配置文件

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Supervisor 发布历史

• 3.3.1 (2016-08-02) 最新版
• 3.0 (2013-07-30)
• 2.0 (2006-08-30)
• 1.0.5 (2004-07-29)

Release History

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安装

推荐环境

• CentOS 6+ 不建议在V6以下的版本上进行安装
• python 2.7.x Installing Python 2.7 on Centos 6

安装步骤

!bash
# 确认环境
[root@localhost ~]# cat /etc/redhat-release 
CentOS release 6.8 (Final)
[root@localhost ~]# python -V
Python 2.7.8
# 使用pip进行安装
[root@localhost ~]# pip install supervisor
Collecting supervisor
  Downloading supervisor-3.3.1.tar.gz (415kB)
    100% |████████████████████████████████| 419kB 659kB/s 
Collecting meld3>=0.6.5 (from supervisor)
  Downloading meld3-1.0.2-py2.py3-none-any.whl
...
Successfully installed meld3-1.0.2 supervisor-3.3.1

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配置服务

supervisor 配置文件: supervisord.conf 。supervisord 和 supervisorctl 都会使用这个文件。

!bash
echo_supervisord_conf > /etc/supervisord.conf
mkdir /etc/supervisord/

include 分段

# 支持多级文件配置
vi /etc/supervisord.conf
...
; last line
[include]
files = /etc/supervisord/*.ini

参考 include Section Settings

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配置 supervisord 服务自动运行脚本

!bash
[root@localhost ~]# wget https://raw.githubusercontent.com/Supervisor/initscripts/master/redhat-init-mingalevme -O /etc/init.d/supervisord
[root@localhost ~]# chmod +x /etc/init.d/supervisord
[root@localhost ~]# chkconfig --add supervisord
[root@localhost ~]# chkconfig --level 2345 supervisord on


#supervisord脚本配置
#PREFIX=/usr
PREFIX=/opt/rh/python27/root/usr

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运行服务

启动

[root@localhost ~]# service supervisord start

###service 报错

  # service supervisord status
/opt/rh/python27/root/usr/bin/python2: error while loading shared libraries: libpython2.7.so.1.0: cannot open shared object file: No such file or directory

解决方法： 在/etc/ld.so.conf.d/目录下新建一个conf配置文件，起名为python2.7.conf 将python2.7的库目录放入到python2.7.conf中 /opt/python2.7/lib 保存后，运行ldconfig，就可以了

管理

!bash
[root@localhost ~]# supervisorctl status
confluence                       RUNNING   pid 3690, uptime 6 days, 17:40:51
crowd                            RUNNING   pid 3686, uptime 6 days, 17:40:51
gerrit-crowd                     RUNNING   pid 3683, uptime 6 days, 17:40:52
gerrit2                          RUNNING   pid 3729, uptime 6 days, 17:40:51
jira                             RUNNING   pid 3682, uptime 6 days, 17:40:52
nginx                            RUNNING   pid 3705, uptime 6 days, 17:40:51

参考 Running Supervisor

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管理 Nginx 服务

要点：

1. command 关闭daemon模式
2. user 一定要用 root ， 因为在配置中写了运行用户了

配置：

[root@localhost /]# vi /etc/supervisord/nginx.ini

[program:nginx]
command=/usr/local/nginx/sbin/nginx -g "daemon off;"
process_name=%(program_name)s
directory=/usr/local/nginx
stopsignal=QUIT
user=root
stderr_logfile=/usr/local/nginx/logs/%(program_name)s.err
stdout_logfile=/usr/local/nginx/logs/%(program_name)s.log

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管理 Java 进程

直接在shell中run java会出现stop失败的情况，在启动前添加 exec即可。

[Gerrit]crowd-ldap-server

vi [root@localhost /]# vi /etc/supervisord/gerrit-crowd.ini

[program:gerrit-crowd]
command=sh /home/gerrit2/crowd-ldap-server/run.sh	; the program (relative uses PATH, can take args)
process_name=%(program_name)s ; process_name expr (default %(program_name)s)
numprocs=1                    ; number of processes copies to start (def 1)
directory=/home/gerrit2/crowd-ldap-server	; directory to cwd to before exec (def no cwd)
autostart=true                ; start at supervisord start (default: true)
autorestart=true              ; retstart at unexpected quit (default: true)
startsecs=3					;wait for 3 seconds
stopsignal=QUIT               ; signal used to kill process (default TERM)
stopwaitsecs=5               ; max num secs to wait b4 SIGKILL (default 10)
user=gerrit2
stdout_logfile  = /home/gerrit2/crowd-ldap-server/log/%(program_name)s.log
redirect_stderr = true

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管理 Java 进程(2)

[Gerrit]GerritCodeReview

[root@localhost /]# vi /etc/supervisord/gerrit2.ini

[program:gerrit2]
command=/var/lib/gerrit2/bin/gerrit.sh run
process_name=%(program_name)s
directory=/var/lib/gerrit2
startsecs=5
stopsignal=INT
user=gerrit2
redirect_stderr=true
stdout_logfile=/var/lib/gerrit2/logs/%(program_name)s.log