akosiaris added a comment.
In T220402#5180031 <https://phabricator.wikimedia.org/T220402#5180031>, @Pablo-WMDE wrote: > Hi @akosiaris, > > thanks for taking the time to explain the way the `Host` header is intended to be used. > If I understand correctly the goal is to ensure that requests originating from our service bear a header `Host: (www.)wikidata.org` and reach which ever IP(s) `appservers.discovery.wmnet` resolves to on the system running it. This sounds like a name resolution challenge and a case for HostAliases <https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/#adding-additional-entries-with-hostaliases> or, more traditionally, a CNAME record <https://en.wikipedia.org/wiki/CNAME_record>. Unfortunately no. It is not a name resolution issue and hence HostAliases and/or CNAME records will not help. Note that we want to do here IS NOT direct the traffic to the correct endpoint, which is indeed a name resolution issue, but rather inform the endpoint which of the hundreds of virtualhosts the request is for, something that needs to be done at the HTTP level. > Again, if we are missing something, implementing this can be arranged, but we really rather not as it sounds like there are more appropriate tools for the job. If there were, we would not be asking it :-) TASK DETAIL https://phabricator.wikimedia.org/T220402 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: akosiaris Cc: fsero, mobrovac, Matthias_Geisler_WMDE, Pablo-WMDE, Dzahn, Addshore, Tarrow, Lea_WMDE, WMDE-leszek, Jakob_WMDE, Aklapper, akosiaris, darthmon_wmde, alaa_wmde, joker88john, Legado_Shulgin, CucyNoiD, Nandana, NebulousIris, thifranc, AndyTan, Gaboe420, Versusxo, Majesticalreaper22, Giuliamocci, Davinaclare77, Adrian1985, Qtn1293, Cpaulf30, Lahi, Gq86, Baloch007, Darkminds3113, Bsandipan, Lordiis, GoranSMilovanovic, Adik2382, Th3d3v1ls, Hfbn0, Ramalepe, Liugev6, QZanden, LawExplorer, WSH1906, Lewizho99, Zppix, Maathavan, _jensen, rosalieper, Liudvikas, Wong128hk, Eevans, thcipriani, Hardikj, Wikidata-bugs, aude, Lydia_Pintscher, dduvall, faidon, Jdforrester-WMF, Mbch331, Jay8g, fgiunchedi
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