Supervisor Install

Supervisor

Why Supervisor?

Supervisor is a client/server system that allows its users to control a number of processes on UNIX-like operating systems. It was inspired by the following:

Features

Simple

Centralized

Efficient

Extensible

Compatible

Proven

Installation: Cent OS / Ubuntu

Supervisor Installation Cent OS (3.1.3)

Server IP:       192.168.30.128

Server OS:        CentOS release 6.7

#yum install python-setuptools

#easy_install supervisor

#supervisord --version

#vi /etc/supervisord.conf

Create a config file

# echo_supervisord_conf > /etc/supervisord.conf

Running the service

#Touch /etc/rc.d/init.d/supervisord                                                                                                                           

Add below scrip to above file

#!/bin/bash

. /etc/init.d/functions

DAEMON=/usr/bin/supervisord

PIDFILE=/var/run/supervisord.pid

[ -x "$DAEMON" ] || exit 0

start() {

        echo -n "Starting supervisord: "

        if [ -f $PIDFILE ]; then

                PID=`cat $PIDFILE`

                echo supervisord already running: $PID

                exit 2;

        else

                daemon  $DAEMON --pidfile=$PIDFILE -c /etc/supervisord.conf

                RETVAL=$?

                echo

                [ $RETVAL -eq 0 ] && touch /var/lock/subsys/supervisord

                return $RETVAL

        fi

}

stop() {

        echo -n "Shutting down supervisord: "

        echo

        killproc -p $PIDFILE supervisord

        echo

        rm -f /var/lock/subsys/supervisord

        return 0

}

case "$1" in

    start)

        start

        ;;

    stop)

        stop

        ;;

    status)

        status supervisord

        ;;

    restart)

        stop

        start

        ;;

    *)

        echo "Usage:  {start|stop|status|restart}"

        exit 1

        ;;

esac

exit $?

Allow executable permission to the /etc/rc.d/init.d/supervisord

#nano /etc/rc.d/init.d/supervisord

#chmod 755 /etc/rc.d/init.d/supervisord

Please uncomment below line from  : /etc/supervisord.conf

Add the below command to : /etc/rc.local

/etc/init.d/supervisord start

Creating process pools

Ref URL: http://stackoverflow.com/questions/12923320/how-to-setup-a-group-in-supervisord

Create pool

Group name: pool1

Programs: web4 / web5

vi /etc/supervisor/conf.d/pool1.conf

[group:pool1]

programs=web4,web5

[program:web4]

command=java -jar stability-1.0-SNAPSHOT-jar-with-dependencies.jar dev

directory=/opt/85

autostart=true

autorestart=true

startretries=3

stderr_logfile=/var/log/web4/web4.err.log

stdout_logfile=/var/log/web4/web4.out.log

[program:web5]

command=java -jar stability-1.0-SNAPSHOT-jar-with-dependencies.jar dev

directory=/opt/86

autostart=true

autorestart=true

startretries=3

stderr_logfile=/var/log/web5/web5.err.log

stdout_logfile=/var/log/web5/web5.out.log

After that restart the supervisord

# /etc/init.d/supervisord restart

How to stop, start or restart.

Supervisorctl

start <name>        Start a process

start <gname>:*     Start all processes in a group

start <name> <name> Start multiple processes or groups

start all       Start all processes

           

Web log in URL.

http://192.168.30.128:9001

 

Superlance

Superlance is a set of additional plugins for Supervisor, that includes plugins for sending email or SMS alerts when a Supervisor process exists unexpectedly, for monitoring memory usage of Supervisor processes, and a few other useful monitoring and alerting utilities. You can also install it via EasyInstall:

$ easy_install superlance

Related Other product

1.      Circus

Ref URL: http://circus.readthedocs.org/en/0.11.1/

Ref URL:         http://www.alphadevx.com/a/455-Installing-Supervisor-and-Superlance-on-CentOS

Ref URL:         https://serversforhackers.com/monitoring-processes-with-supervisord