Migrating mid server from on-prem to cloud

Asmita7
Tera Expert

yesterday

Hi friends,

 

I am stuck across one interview question which I attended yesterday.

 

There is a mid-server in on-prem environment which is discovering CI's since last 6 months. Now, I want to migrate the mid-server to cloud environment.  What are the possibilities. 

1. I wan to mak sure that all previous IP discoveris should reflect in new cloud environment. What to do ?

2. Can I use the new cloud based mid-server for discovering the ci's which are located in a data centre as earlier ?

Please suggest.

Thank you very much for your time and help.

Asmita 

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Fabian Kunzke
Mega Sage

7m ago

Hey,

 

So I am assuming, that this interview is in the past and you are truly here to just get an answer. I want to urge you, not to copy my answer as it will require extensive background knowledge - if you are not comfortable with that knowledge, please ignore my answer.

 

The question you got is a tricky one, because it won't be an easy true or false and depends on the customer setup, but i would like to give my thoughts on this:

 

1) Making sure all IP discoveries are reflected in the new cloud environment

The MID-Server transition will be done by just setting up a new MID-Server. If you want to transition all current discovery to that new MID-Server, it must be done in the discovery schedules. Ideally, all schedules are setup with a dynamic MID-Server selection or a MID-Server cluster. If that is the case, adding the new MID-Server to the cluster will be enough. If not, then you will need to adjust the discovery schedules. However, you will need to make sure that...

 

2) Can I use the new cloud based MID-Server for discovering the same scope?

... connectivity is ensured. And this is where more background is required. Is this a self-hosted cloud environment? Is it outsourced (Azure, AWS etc.)? Generally speaking I would not recommend using a cloud-based MID-Server to discover on-premise hardware. Even if it was possible - which it is, you will need a static IP assignment and the firewall openings for the MID-Server - it goes against why we use firewalls. We don't want massive outside traffic jumping into our infrastructure - remember, for the discovery that firewall opening will need to forward traffic to the whole infrastructure!

So yes. It is possible. Should you do it? No. For on-premise discovery use an on-premise MID-Server.

 

Hope this helps

Regards

Fabian

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