supervisor进程监控

    supervisor提供进程异常退出自动启动的功能，基本配置如下。

下载supervisor安装工具    

wget http://pypi.python.org/packages/2.6/s/setuptools/setuptools-0.6c11-py2.6.egg

执行脚本

sh setuptools-0.6c11-py2.6.egg

下载安装包

wget http://pypi.python.org/packages/source/s/supervisor/supervisor-3.0b1.tar.gz

tar -zxvf supervisor-3.0b1.tar.gz

cd supervisor-3.0b1

python setup.py install

拷贝配置文件

echo_supervisord_conf  >/etc/supervisord.conf

此处可以取消注释，可以提供web页面观察，ip换成对应主机的ip

;[inet_http_server]         ; inet (TCP) server disabled by default

;port=127.0.0.1:9001        ; (ip_address:port specifier, *:port for all iface)

;username=user              ; (default is no username (open server))

;password=123               ; (default is no password (open server))

此处为需要监控的进程信息，program名称随便起，command为进程名

[program:Jetty]

command=/home/work/jdk1.8.0_20/bin/java -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -Xss256k -server -Xms4G -Xmx4G -Djetty.logs=/home/work/jetty/logs -Djetty.home=/home/work/jetty -Djetty.base=/home/work/jetty -Djava.io.tmpdir=/tmp -jar /home/work/jetty/start.jar jetty.state=/home/work/jetty/jetty.state jetty-logging.xml jetty-started.xml              ; 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=/tmp                ; directory to cwd to before exec (def no cwd)

umask=022                     ; umask for process (default None)

priority=999                  ; the relative start priority (default 999)

autostart=true                ; start at supervisord start (default: true)

autorestart=unexpected        ; whether/when to restart (default: unexpected)

startsecs=1                   ; number of secs prog must stay running (def. 1)

;startretries=3                ; max # of serial start failures (default 3)

;exitcodes=0,2                 ; 'expected' exit codes for process (default 0,2)

;stopsignal=QUIT               ; signal used to kill process (default TERM)

;stopwaitsecs=10               ; max num secs to wait b4 SIGKILL (default 10)

;stopasgroup=false             ; send stop signal to the UNIX process group (default false)

;killasgroup=false             ; SIGKILL the UNIX process group (def false)

;user=chrism                   ; setuid to this UNIX account to run the program

;redirect_stderr=true          ; redirect proc stderr to stdout (default false)

;stdout_logfile=/a/path        ; stdout log path, NONE for none; default AUTO

;stdout_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

;stdout_logfile_backups=10     ; # of stdout logfile backups (default 10)

;stdout_capture_maxbytes=1MB   ; number of bytes in 'capturemode' (default 0)

;stdout_events_enabled=false   ; emit events on stdout writes (default false)

;stderr_logfile=/a/path        ; stderr log path, NONE for none; default AUTO

;stderr_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

然后启动服务：supervisord

查看状态

supervisorctl status

Jetty                            RUNNING    pid 27600, uptime 0:00:02

配置文件重载为 supervisorctl reload 重载后要重新启动进程。