All,
The entire puppet configuration I have is based on the rule that nodes
can only have variables and/or classes.
below are two examples how I configured puppet to deal with an apache
installation and addding users
The 'apache' example does work perfectly, but the 'users' example does
not and this is where I need your help
For example a node named apache.mydomain.com could be like this
node 'apache.mydomain.com' {
# Variables
$apache_srv_version = "2.2.17-1"
$apache_vgname = "vg01"
# Classes
include apache::setup
}
Apache module
## init.pp
class apache {
require apache::params
}
## params.pp
class apache::params {
....
$package_version = $apache_srv_version ? {
"2.2.16" => "2.2.16-1.el5",
"2.2.16-1" => "2.2.16-1.el5",
"2.2.17" => "2.2.17-1.el5",
"2.2.17-1" => "2.2.17-1.el5",
default => "latest",
} # End package version
....
}
## setup.pp
class apache::setup inherits apache {
class { "apache::setup::pre1": stage => pre1 }
}
class apache::setup::pre1 inherits apache::setup {
package { $apache::params::package_name_modules:
ensure => "${apache::params::package_version}",
......
}
}
What happens is that the variable gets set in the node
'apache.mydomain.com'
$apache_srv_version = "2.2.17-1"
Then it's evaluated in the apache::params class and the proper version
value is stored in $package_version
$package_version = $apache_srv_version ? { }
When the actual package get installed in apache::setup::pre1, the
value is retrieved from apache::params
ensure => "${apache::params::package_version}",
This all works like a charm and I have dozens of other classes which
work the same way as the apache class.
The module I have a problem with is my users module. This looks like
the apache module, but is slightly different (like the 'define' used
instead of only classes)
Let me explain
node 'users.mydomain.com' {
# Variables
$users_application_name = "ap1"
# Classes
include users::funcusers::was
}
## init.pp
define users (
$ensure = "present",
$username = "${title}",
$uid,
$gid,
$comment = "${username}",
$home = "/home/${username}",
$shell = "/bin/bash",
$system = "false",
$password = "",
$password_min_age = "0",
$password_max_age = "90",
$groups = "",
$membership = "",
$mode = "700",
$force = "false" ) {
#
# Load subclasses
include users::params
include users::virtual
#
# Required user settings
user { "${username}":
ensure => "${ensure}",
uid => "${uid}",
gid => "${gid}",
comment => "${comment}",
home => "${home}",
shell => "${shell}",
system => "${system}",
}
#
# Additional user settings
if $password != "" and "${users::params::password_initialize}"
== "true" {
User["${username}"] {
password => "${password}",
}
}
if $groups != "" {
User["${username}"] {
groups => $groups,
}
}
if $membership != "" {
User["${username}"] {
membership => $membership,
}
}
if $password_min_age != "" and $centrify_mode == "" {
User["${username}"] {
password_min_age => $password_min_age,
}
}
if $password_max_age != "" and $centrify_mode == "" {
User["${username}"] {
password_max_age => $password_max_age,
}
}
#
# Create homedirectory
file { "${home}":
ensure => $ensure ? {
"present" => "directory",
"absent" => "absent",
default => "directory",
},
owner => "${uid}",
group => "${gid}",
mode => "${mode}",
force => "${force}",
require => User["${username}"],
}
}
## params.pp
class users::params {
$users_applications = $users_application_name ? {
"ap1" => "ap1",
"ap1" => "ap2",
default => "unknown",
}
}
## funcusers.pp
import "funcusers/*.pp"
class users::funcusers inherits users::virtual {
$user_type = "funcusers"
}
## funcusers/was.pp
class users::funcusers::was inherits users::funcusers {
case $users::params::users_applications {
"ap1": { Users <| title == was |> <- Group <| title
== ap1 |> }
"ap2": { Users <| title == was |> <- Group <| title
== ap2 |> }
default: { Users <| title == was |> <- Group <| title
== was |> }
}
}
## virtual.pp
class users::virtual {
require users::params
class { "users::virtual::init": stage => init }
}
class users::virtual::init inherits users::virtual {
@group { "was": gid => "${users::params::gid_was}" }
@group { "ap1": gid => "${users::params::gid_ap1}" }
@group { "ap2": gid => "${users::params::gid_ap2}" }
@users {
"was":
uid => "123",
gid =>
$users::params::users_applications ? {
"ap1" => "$
{users::params::gid_ap1}",
"ap2" => "$
{users::params::gid_ap2}",
default => "$
{users::params::gid_was}",
},
groups => "extra",
comment => "Functional user $
{users::params::users_applications}";
}
}
When puppet runs, the variable set in the host 'users.mydomain.com'
$users_application_name = "ap1"
is ignored and does not seem to be 'known' to the other subclassess
(like params) and therefore ap1 will never be used, but always the
defaults
I know the users module and the way I have created it DOES work,
because when I copy the same variable line from the node directly into
the params class everything works fine
class users::params {
$users_application_name = "ap1"
$users_applications = $users_application_name ? {
"ap1" => "ap1",
"ap1" => "ap2",
default => "unknown",
}
}
the $users_applications will have 'ap1' as value and will create the
user 'was' with the gid of ap1 and put ap1 in the user comment.
Can somebody explain me what I am doing wrong here ? or what I have
missed ?
WHy does the apache params 'see' the variable frmo the node config and
the users params not ?
FYI,
I use puppet version 2.6.8 (and also tested with 2.6.9) on a RHEL5
server with ruby 1.8.5
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