Ceph multi site outage question

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Hello,
I have a question about multi site configuration. I have 2 clusters configured in a single realm and zonegroup. One cluster is the master zone and the other the slave. Lets assume the first cluster can be reached at http://application1.something.com and the 2nd one is http://application1-slave.something.com. My application has a number of config files that reference http://application1.something.com. So if there is a site outage i'd need to change all of these files to http://application1-slave.something.com and restart. I was wondering if there are any alternatives where I dont have to change the config files. The best solution would be to use the same name in both clusters - http://application1.something.com. But i'm not sure if that is recommended or doable even. Any suggestions?  I'm using the latest version of Ceph Jewel, 10.2.11,  but I am planning to upgrade to luminous soon. 

Thanks
M
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