Linux Daemon Manager Supervisor Installation configuration (use HTTPD to monitor processes)

Source: Internet
Author: User
Tags http authentication

Supervisor is a good option when the Linux service needs to run reliably, and after the service exit, it needs to be restarted automatically and can monitor the status of the process, supervisor is a process manager developed in Python. The following is the installation configuration process.


1. Installing Supervisor

Easy_install Supervisor Setuptool Installation method

Apt-get Install Supervisor Debian/ubuntu Installation method

Yum Install Supervisor Redhat/centos installation method



2. Generate the default configuration file

echo_supervisord_conf >/etc/supervisord.conf



3. Modify the/etc/supervisord.conf configuration file

If you need to access the Web control interface, the Inet_http_server section is modified to

[Inet_http_server]

port=0.0.0.0:9001

Username=username; Your user name

Password=password; Your password.


4. Modify the startup script-add Supervisord to system service

#!/bin/sh

#

# Supervisor is a client/server system

# 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/functions

Retval=0

Prog= "Supervisord"

Pidfile= "/tmp/supervisord.pid"

Lockfile= "/var/lock/subsys/supervisord"

Start ()

{

Echo-n $ "Starting $prog:"

Daemon--pidfile $pidfile supervisord-c/etc/supervisord.conf

Retval=$?

Echo

[$RETVAL-eq 0] && Touch ${lockfile}

}

Stop ()

{

Echo-n $ "Shutting down $prog:"

Killproc-p ${pidfile}/usr/bin/supervisord

Retval=$?

Echo

If [$RETVAL-eq 0]; Then

Rm-f ${lockfile} ${pidfile}

Fi

}

Case "$" in

Start

start;;

stop) stop;;

Status

Status $prog;;

Restart

Stop

start;;

*)

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

Esac


5. Assign permissions to boot

chmod +x/etc/init.d/supervisord

Chkconfig Supervisord on

Service Supervisord Start



At present all Supervisor Basic is done, then I am now using httpd to be managed test whether it can be started and accessed and will not self-start after exit.



6. Modify/etc/supervisord.conf at the end to add the following content

[Program:apache]

Command=/usr/local/apache/bin/httpd-d FOREGROUND

Autostart=true

Autorestart=true

Startsecs=3

User=root


7. Reload the configuration file if 80 ports are accessible

Service Supervisord Restart


The log shows normal:

Crit Supervisor running as root (no user in config file)

INFO RPC interface ' supervisor ' initialized

INFO RPC interface ' supervisor ' initialized

Crit Server ' unix_http_server ' running without any HTTP authentication checking

INFO daemonizing the Supervisord process

INFO Supervisord started with PID 4510

INFO spawned: ' Apache ' with PID 4512

INFO Success:apache entered RUNNING state, process have stayed up for > than 3 seconds (startsecs)



8. Testing Services

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9.supervisor Web test is showing normal

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10. Turn off the httpd to see if it can be self-starting.

/usr/local/apache/bin/apachectl stop manually shut down httpd

Watch the log stop and start up again:

Exited:apache (exit status 0; expected)

INFO spawned: ' Apache ' with PID 4640

INFO Success:apache entered RUNNING state, process have stayed up for > than 3 seconds (startsecs)








Another way of configuring files (this approach is good for multiple services):


1. Modify the configuration file vim/etc/supervisord.conf

[include]

; files = Relative/directory/*.ini


Modified to:

[include]

; files = Relative/directory/*.ini

Files =/etc/supervisord.conf.d/*.conf




2. Create a managed service configuration file

mkdir/etc/supervisord.conf.d/

cd/etc/supervisord.conf.d/

Vim apache.conf

[Program:apache]

Command=/usr/local/apache/bin/httpd-d FOREGROUND

Autostart=true

Autorestart=true

Startsecs=3

User=root



3. Common Commands

Supervisorctl start Apache

Supervisorctl Stop Apache

Supervisorctl status Apache




This article is from the "Wind Bo Fei" blog, please be sure to keep this source http://gloryxin.blog.51cto.com/10134758/1763451

Linux Daemon Manager Supervisor Installation configuration (use HTTPD to monitor processes)

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