Hi all,
This is my first post here so apologies if this has been already asked
before :-) . Any pointers to the relevant conversation will be much
appreciated.
I'm trying to understand what approach I should take regarding
organizing my inventory, considering the following:
- I have an external, custom-made CMDB (somewhat tweakeable).
- The servers are scattered through 15+ datacentres
- The servers might belong to different customers.
- I want to be able to override vars defined on a Datacentre-level with
others defined at customer-level or host-level.
That'd look like :
[Datacentre1]
CustomerA-webserver1
customerA-webserver2
customerA-database1
customerB-server1
customerB-server2
...
[Datacentre1:vars]
dns1: 1.1.1.1
dns2: 1.1.1.2
ntp1: 1.1.1.1
ntp2: 1.1.1.2
[Datacentre2]
customerC-webserver1
customerC-webserver2
CustomerD-server1
...
[Datacentre2:vars]
dns1: 2.1.1.1
dns2: 2.1.1.2
ntp1: 2.1.1.1
ntp2: 2.1.1.2
The playbooks I'm focusing on writing now are about standardizing basic
system
configurations (ntp.conf , resolv.conf , syslog etc) and the
Datacenter-inherited values should be good 90% of the time, but there are
exceptions; that's why I need to come up with this schema.
Longer term, all this data could be incorporated into the CMDB but at the
moment I want to see if this can be reasonably accomplished with
Ansible-only configuration.
Also I've explored the possibility of defining this into roles, but I'm
not
seeing how I can easily override values for a certain host or "customer"
group.
Thanks,
Fran
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