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Lab 4.2

Brucecurcio
Brucecurcio Posts: 5
in LFS201 Class Forum - Discontinued

Has anyone else noticed that both echo commands are being executed just after starting the fake2 service? No echo commands are run when stopping the service

-I start the service via: systemctl start fake2.service

-Take a look at its status via: systemctl status fake2.service

and notice that both the I am starting... and I am stopping... syntax is output.

-I then stop the service via: systemctl stop fake2.service

-check the status again via: systemctl status fake2.service

the service does stop but none of the echo text is output.

I am running CentOS 7 via VMWare Player v7.1

Comments

  • saad.butto
    saad.butto Posts: 1
    Same here, can someone explain why?
  • fady.hayali
    fady.hayali Posts: 1
    Same here. The ExecStop is executed automatically without me stopping the service. Any help guys?
  • luisviveropena
    luisviveropena Posts: 1,343
    Hi guys,

    What's the Lab# you are working on?

    Thanks,
    Luis.
  • dvarvenne
    dvarvenne Posts: 1
    I bet they're working on lab 4.2 :)
  • luisviveropena
    luisviveropena Posts: 1,343
    Hi,

    I reviewed the lab file and I understand what is the issue you are referring to. I'll try to replicate the issue and will let you know.

    Thanks,
    Luis.
  • coop
    coop Posts: 917
    What is going on here is that the command for ExecStart is too simple, it just does an echo and ends. Therefore the service is no longer running and so it stops. (Note that
    stopping a service that is already stopped does not produce error messages)

    In other words, systemd expects that a service will continue to run until it exits
    or is terminated with a stop. We fail to do that here.

    Make the following substitution:

    ExecStart=/usr/bin/sleep 60
    (you need the path to sleep)

    You will see the "stop" message will not happend for 60 seconds, if you do a
    tail -f /var/log/messages when you do systemctl start fake.service

    We were too simple here. This often happens when you try to give a trivial example.
    See the man page (man systemd.service). It can get complicated :) !

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