How can I create a service in CentOS 6?

Question

I need to create ratchet service on my dedicated server (CentOS 6). I have successfully created this service on local CentOS 7. The problem is that the server has got old version of CentOS and I need to create a service there.

I have taken the following steps to create a service in CentOS 7:

Created a file named ratchet.service in /etc/systemd/system/ and put the following in it:

[Unit]
Description=Ratchet Service
After=network.target

[Service]
Type=simple
ExecStart=/usr/bin/php -f /path/to/ratchet/server$
Restart=on-abort

[Install]
WantedBy=multi-user.target

To start:

service ratchet start

Can anyone please advise how can this be achieved in CentOS 6?

UPDATE: What i am trying to achieve is to run Ratchet Service written in php.I want to run this service on Centos 6 so that it can run persistently on my server. I need to execute server file script (named above as /path/to/ratchet/server.php).

I am following this tutorial and code : https://github.com/amirsanni/Video-Call-App

Solution

I'll provide the basic service script but anyone is invited to improve my answer.

This is for CentOS 6.10

The service scripts are placed in this directory: /etc/rc.d/init.d

There's a template provided by the system, open the file with your editor of choice (example vi): vi /usr/share/doc/initscripts-*/sysvinitfiles

Here's a simple example of my kafka script:

#!/bin/bash
#/etc/rc.d/init.d/kafka

# Source function library.
. /etc/init.d/functions


start() {
        echo -n "Starting kafka... "
        nohup /home/kafka/kafka/bin/kafka-server-start.sh /home/kafka/kafka/config/server.properties &
        touch /var/lock/subsys/kafka
        return 0
}

stop() {
        echo -n "Shutting down kafka... "
        nohup /home/kafka/kafka/bin/kafka-server-stop.sh &
        rm -f /var/lock/subsys/kafka
        return 0
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        ;;
    restart)
        stop
        start
        ;;
    reload)
        ;;
    *)
        echo "Usage: kafka {start|stop|status|reload|restart}"
 exit 1
        ;;
esac
exit $?

Based on this kafka example, this file should be saved as /etc/rc.d/init.d/kafka

I run it by typing: service kafka start

Comments

[Kamil Maciorowski]

Init system in your Centos 6 is probably not systemd and you need to work with /etc/init.d/ instead of systemd units. Please study How to find out if a system uses SysV, Upstart or Systemd initsystem, Detect init system using the shell and edit your question to tell us what it is.

[Faryal Gohar]

Thanks @KamilMaciorowski Yes.i understand i would need to use /etc/init.d .My question was how can i write the above service in init.d in centos 6?

[munjal]

@FaryalGohar did you found the answer of this question? I also need this service in CENTOS 6.