Forum Discussion
GTM and Public ISP
I have not seen or played with GTM's so excuse the very likely daft questions !
so I have public facing web servers. currently they get resolved by public DNS to an IP, that IP hits our firewall and we NAT that IP to the inside IP of the application. Marvellous !, if a little basic.
So, we are buying a GTM (there will be more than one DC very soon running the same apps)
so I have an app say;
thisapp.thisdomain.com resolves via public DNS to public.public.public.public which goes to a particular DC.
I have seen stuff about adding a CNAME to our DNS (I am assuming public!) and also to add NS records. I guess the GTM will need an IP in the public range that can respond to queries from public DNS's.
I am not completely clear on what I need to do from an ISP perspective, tell 'em to set up cnames, additonal NS records etc
If someone has done this before I would be eternally grateful for a set of steps/instructions that perhaps even I could follow !
Thank you in advance,
George
- HamishCirrocumulusFrom a high level, you need
- Richard_Tadros_Nimbostratus
The answer is pretty clear,
Now considering i have the website hosted on a server located in the DR site, acting as active/active with the main site host. I think we will be doing the same basic configuration of subdomain and cname for the additional GTM. Usually the GTM can redirect the traffic from one site to another in case of server failure...... However, what happens in case the GTM is down ???? How the ISP will be able to detect the failure of the GTM ??? and would be using only a single GTM without sending any other requests to the failed GTM???? Will the user be able to notice the failure of one of the GTM ??? And for how long will the user still find the website is down ???
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