[root@localhost ~]# usermod -d /home/foo test
usermod: user test is currently used by process xxxxx
Huh, learn something new every day :-)
This is a feature of the provider, usermod, to be honest I think anything you
try do here with Puppet is going to be pretty nasty. You could do this:
user { 'tools':
ensure => present,
home => '/apps/tools',
}
exec { 'fix_home':
command => '/usr/local/bin/fix_home.sh',
unless => "grep '/apps/tools' /etc/passwd",
}
Which is very specific and pretty horrid. I think you're trying to solve this
in the wrong way though. What needs to happen is some sort of
migration/upgrade/downtime (execute a series of commands in sequence), and
Puppet is not a very good tool for that. Instead I would invest time into
ensuring you don't get into this problem in the first place:
define user_and_service($username, $service, $homedir) {
validate_string($username)
validate_string($homedir)
user { $username:
home => $homedir,
}
service { $service:
ensure => 'running',
require => User[$username],
}
}
It's a bit of a dumb example, but illustrates the idea that you can't do what
has happened to you without setting a certain parameter.
--
Luke Bigum
Senior Systems Engineer
Information Systems
----- Original Message -----
From: "Vadym Chepkov" <[email protected]>
To: [email protected]
Sent: Friday, 11 December, 2015 12:27:34 PM
Subject: [Puppet Users] user and service interdependencies
Hi,
How would one gracefully solve a problem like this, we are facing time to time,
mostly in the development cycle
Lets say somebody wrote code like this (for simplicity):
user { 'tools':
ensure => present,
}
service { 'tools':
ensure => 'running',
require => User['tools'],
}
It ran, created user, started service. Then somebody realized, hey, I didn't
set home for the user, and update the code
user { 'tools':
ensure => present,
home => '/apps/tools',
}
Problem here, puppet can't apply this code anymore, since 'user' resource will
call usermod command and it refuses update user's home if a process running.
Service needs to be stopped, user modified and then service started. One could
create an exec, to stop the service, but how to 'notify' this exec, I can't
figure out.
Thanks,
Vadym
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