Directory Service on non-VPC EC2 instance on Amazon Web Services

Hi Experts,

Planning to deploy directory service on classic EC2 instance (Windows 2012) and join all other instances.  Do not want to launch it inside VPC. Let me know what all the challenges that has to be faced in terms of DNS , DHCP etc.,
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Zephyr ICTCloud ArchitectCommented:
I'm not entirely sure what you are trying to achieve, if it's to create an Active Directory environment in EC2 it will not be a stable environment... I understand one might test things of course.

That being said, the major challenges all have to do with how EC2 works, for instance:
- All the EC2 instances get a dynamic private IP.
- All instances get a dynamic private hostname (“ip*dynamic private ip+.*region+.compute.internal”)
- They all get a dynamic public hostname.

That alone is enough to make it a nightmare, it's not impossible though, Amazon even has a tutorial that will get you where you want to go ... Especially the script (bat-file) they provide to get all necessary Security Groups in place, which are definitely needed. The tutorial is for HPC, but you'll be able to get out of it what you need.

As regards to your other questions (DNS, DHCP), that would be another issue, if your plan is to give out DHCP addresses to instances in the cloud I'm afraid that will not be possible... You could create a DNS server, but I'm not seeing the benefit for it in EC2.

Best solution is still VPC, but that's out of scope apparently :-)

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anuboggaramAuthor Commented:
Hi spravtek,

Thanks for the inputs. It saved my time as well.
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