I am undertaking development of an https application (both client and server) which requires that I issue myself a certificate with the domain name of the server. Lets say its test.example.com and I access the server from my browser with https://test.example.com

My development machine sits on my home network, with a dhcp/dns server on another machine which uses dnsmasq. It can be configured to deliver the ip address of my development machine to a dns lookup of test.example.com

BUT. I have a small raspberry pi which I want to hold a copy of this application. When I plug it into my home network my dnsmasq recognises its mac address and allocates it a known ip address.

CAN I configure dnsmasq in anyway (or something else?), so that IF and ONLY IF this machine is plugged in a dns lookup of test.example.com now returns this machines ip address.

NOTE: I am happy to give this domain name a very short TTL to facilitate a quick switch over.

NOTE: I am aware that one approach could be to configure the dns server to always return the ip address of raspberry pi, but put test.example.com in my development machines /etc/hosts file for use only when I want develop locally and manually remove it when I want to use the raspberry pi. I am looking for an automatic solution. (although this will be the fallback if no answer here is forthcoming)

UPDATE: I have come to the conclusion I have asked the wrong question. I think I can achieve what I want by using a certificate with more than one domain name it it. I can then load that single multidomain name certificate in my code and distribute it to both machines. I then just point the browser at the correct machine and it will run the same copy of the code on the machine I want. BUT the code is identical on both machines.


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