Ansible dynamic inventory script.
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#!/usr/bin/perl
use JSON::XS;
use Getopt::Long;
use Pod::Usage;
=head1 NAME
inventory - Ansible Dynamic Inventory script
=head1 SYNOPSIS
inventory --list | --host <hostname>
--list: return YAML compatible JSON inventory of all hosts
--host <hostname>: return YAML compatible JSON with all variables defined for the given host
=head1 DESCRIPTION
This is a completely useless example of a dynamic inventory, since it just returns the
included ini-style inventory, in JSON (or YAML). To test it do:
$ ansible -i <this file> --list-hosts <ansible host pattern: eg. all>
=cut
my %inventory = (
_meta => { hostvars => {} },
all => { children => ['ungrouped'] },
ungrouped => {}
);
sub hosts {
my $host = shift;
#expand ranges in hostnames
# ie for each [a:b] in the name use perls range operator a..b
return $host !~ m{^(.*?)\[(.*?):(.*?)\](.*)} ? $host
: map { hosts($_) } map { $1.$_.$4 } $2..$3;
}
sub group {
my ($group, $host, @args) = (shift,split(/\s+/,shift));
!exists $inventory{$group} && ($inventory{$group} = {'hosts'=> []});
exists $inventory{$group}->{hosts} || ($inventory{$group}->{hosts} = []);
# need to handle expansion of ranges in host names
for my $host (hosts($host)) {
push(@{$inventory{$group}->{hosts}},$host);
for (@args) {
exists $inventory{_meta}->{hostvars}->{$host} ||
($inventory{_meta}->{hostvars}->{$host} = {} );
my ($k, $v) = split('=',$_);
$inventory{_meta}->{hostvars}->{$host}->{$k} = $v;
}
}
}
sub vars {
my ($group, $k, $v) = (shift,split('=',shift));
!exists $inventory{$group} && ($inventory{$group} = {'vars'=> {}});
exists $inventory{$group}->{vars} || ($inventory{$group}->{vars} = {});
$inventory{$group}->{vars}->{$k} = $v;
}
sub children {
my ($group, $line) = @_;
!exists $inventory{$group} && ($inventory{$group} = {'children'=> []});
exists $inventory{$group}->{children} || ($inventory{$group}->{children} = []);
push(@{$inventory{$group}->{children}},$line);
}
sub inventory2json {
my $group = "ungrouped";
my $state = \&group;
while ( <DATA> ) {
chomp;
m{^(\s*|#.*)$} && next;
m{\[([^:]+)(:vars|:children)?\]} && do {
$group = $1;
$state = defined($2) ? substr($2,1) : "group";
$state eq "group" && push(@{$inventory{all}->{children}},$group);
$state = \&$state;
next;
};
$state->($group,$_);
}
}
my ($list, $host ) = (undef, undef);
GetOptions("list" => \$list,
"host=s" => \$host)
or pod2usage(2);
defined $list == defined $host && pod2usage('Need exactly one option either --list or --host');
inventory2json;
$list && print JSON::XS->new->pretty->utf8->space_after(1)->encode(\%inventory);
__DATA__
# Each group represents a role or a location
# ie.
localhost ansible_connection=local ansible_become=False
[default]
pallas.ai.rug.nl ansible_become=true ansible_ssh_user=remco
ai17873.ai.rug.nl ansible_become=true ansible_ssh_user=rwouts
129.125.5.[1:255] ansible_become=true
129.125.74.[1:255] ansible_become=true ansible_ssh_user=rwouts
ai178125.ai.rug.nl ansible_ssh_user=rwouts ansible_become=true
ai178126.ai.rug.nl ansible_ssh_user=rwouts ansible_become=True
monk01.hpc.rug.nl ansible_ssh_user=rwouts ansible_become=True
lwp132.lwp.rug.nl ansible_ssh_user=rwouts ansible_become=True
#locations
#
[esx]
turing13.housing.rug.nl role=TimeCapsule
turing14.housing.rug.nl role=TestMachine
turing15.housing.rug.nl role=AIFileServer
lwp[01:28].service.rug.nl
spruitje.service.rug.nl
lwp[01:28].service.rug.nl
spruitje.service.rug.nl
lwp29.lwp.rug.nl role=TracServer
lwp30.lwp.rug.nl role=AfsFileServer
trac.lwp.rug.nl role=TracServer
afs.lwp.rug.nl role=AfsFileServer
[groningen:children]
esx
default
lwp
[groningen:vars]
timezone=Europe/Amsterdam
#Nijenbrg
[5116.315]
129.125.28.[145:166]
#Harmonie
[1313.266]
129.125.176.[215:225]
[1313.267]
129.125.176.[118:129]
#MM1
[1313.258]
129.125.145.[26:50]
#MM2
[1313.257]
129.125.145.[51:75]
#MM3
[1313.265]
129.125.145.[1:25]
[5173.169]
129.125.157.[1:45]
[5116.303]
129.125.28.[55:79]
[5116.310]
129.125.28.[20:51]
[5116.315]
129.125.28.[145:166]
[5161.204]
129.125.74.[107:118]
[5161.206]
129.125.74.[156:159]
[5161.216]
129.125.74.[30:47]
[5161.228]
129.125.74.[73:103]
[5161.273]
129.125.74.[122:154]
[5161.280]
ai178130.ai.rug.nl
ai178133.ai.rug.nl
ai178139.ai.rug.nl
ai178140.ai.rug.nl
ai178141.ai.rug.nl
ai178142.ai.rug.nl
ai178143.ai.rug.nl
ai178144.ai.rug.nl
ai178145.ai.rug.nl
ai178146.ai.rug.nl
[5161.283]
129.125.74.[161:185]
[bernoulliborg:children]
5161.204
5161.206
5161.216
5161.228
5161.273
5161.283
[nijenborg:children]
5116.303
5116.310
5116.315
#
#roles
#
[timecapsule] #
turing13.housing.rug.nl
[timecapsule:vars]
[pi]
pi ansible_ssh_user=pi ansible_become=True ansible_host=129.125.178.200
[lwp3]
2.ai ansible_ssh_user=rwouts ansible_become=True
haytabo.let.rug.nl ansible_ssh_user=rwouts ansible_become=True theuser=rwouts
[lwp]
turing10.housing.rug.nl
turing13.housing.rug.nl role=TimeCapsule
turing14.housing.rug.nl role=TestMachine
turing15.housing.rug.nl role=AIFileServer
lwp29.lwp.rug.nl role=TracServer
lwp30.lwp.rug.nl role=AfsFileServer
trac.lwp.rug.nl role=TracServer
afs.lwp.rug.nl role=AfsFileServer
debian
lwp32.lwp.rug.nl ansible_become=True
lwp31.lwp.rug.nl ansible_become=True
themis.housing.rug.nl ansible_become=True
129.125.178.[1:255] ansible_become=True
cit-zb-3-147.rc.rug.nl ansible_ssh_user=rwouts ansible_become=True theuser=rwouts
[lwp:children]
bernoulliborg
nijenborg
[lwp:vars]
ansible_ssh_user=rwouts
ansible_become=True
become_user=rwouts
[ulab]
ai178174.ai.rug.nl ansible_ssh_user=rwouts ansible_become=True become_user=rwouts
ai178175.ai.rug.nl ansible_ssh_user=rwouts ansible_become=True become_user=rwouts
ai17850.ai.rug.nl ansible_ssh_user=admin ansible_become=True become_user=admin
[ulab:children]
5161.280
[ulab:vars]
ansible_user=usabilitylab
ansible_timeout=40
ansible_become=True
become_user=usabilitylab
[alice:children]
5161.204
5161.206
5161.216
5161.228
5161.273
5161.283
#These are the AI servers (iron)
[ai]
tcw1 ansible_host=129.125.14.181
aps ansible_host=129.125.14.183
bak ansible_host=129.125.14.184
tcw2 ansible_host=129.125.14.185
[ai:vars]
ansible_user=root
ansible_become=False
ansible_ssh_private_key_file=~/.ssh/old-dss-keys/id_dsa
[ai_vm]
turing15.housing.rug.nl
turing18.housing.rug.nl
mail.ai.rug.nl
imap.ai.rug.nl
www.ai.rug.nl