Nevermind, I figured out I wasn't even passing my VCL config correctly :)
On Wed, Mar 18, 2020 at 11:41 AM Martynas Jusevičius <[email protected]> wrote: > > My attempt to obfuscate the hosts failed :) Sorry for that. > > In short: the configured backend is atomgraph.dydra.com but > BereqHeader Host is atomgraph.dydra.varnish. Why? > > On Wed, Mar 18, 2020 at 11:36 AM Martynas Jusevičius > <[email protected]> wrote: > > > > Hi, > > > > I'm using varnish-5.2.1 revision 67e562482 as a Docker image and > > trying to restore the setup that was working some time ago. > > > > However I'm getting 503 Backend fetch failed. > > > > The VCL file clearly specifies the backend: > > > > backend default { > > .host = "atomgraph.some_host.com"; > > .port = "80"; > > .first_byte_timeout = 60s; > > } > > > > Varnish itself runs on atomgraph.some_host.varnish, as specified in > > docker-compose.yml. > > > > When I login into the container, I see the client request: > > > > - ReqMethod GET > > - ReqURL /smth/smth/... > > - ReqProtocol HTTP/1.1 > > - ReqHeader Accept: > > application/rdf+xml,text/rdf+n3,application/n-triples,text/csv,application/rdf+xml,application/rdf+thrift,text/turtle,application/rdf+json > > - ReqHeader Cache-Control: no-cache > > - ReqHeader Authorization: Basic > > bGlua2VkZGF0YWh1YjpqYThhc3BhdHV0YWtFdGhV > > - ReqHeader Host: atomgraph.dydra.varnish > > - ReqHeader Connection: Keep-Alive > > - ReqHeader User-Agent: Apache-HttpClient/4.1.1 (java 1.5) > > - ReqHeader X-Forwarded-For: 172.30.0.3 > > > > However when I look at the backend request: > > > > - BereqMethod GET > > - BereqURL /smth/smth/... > > - BereqProtocol HTTP/1.1 > > - BereqHeader Accept: > > application/rdf+xml,text/rdf+n3,application/n-triples,text/csv,application/rdf+xml,application/rdf+thrift,text/turtle,application/rdf+json > > - BereqHeader Authorization: Basic > > bGlua2VkZGF0YWh1YjpqYThhc3BhdHV0YWtFdGhV > > - BereqHeader Host: atomgraph.dydra.varnish > > - BereqHeader User-Agent: Apache-HttpClient/4.1.1 (java 1.5) > > - BereqHeader X-Forwarded-For: 172.30.0.3 > > - BereqHeader X-Varnish: 32783 > > > > it looks like it is calling itself (i.e. the local fake .varnish > > backend host instead of the real .com one), judging from the > > BereqHeader Host. > > > > If that is the case, then no wonder that the backend request fails: > > > > - BerespProtocol HTTP/1.1 > > - BerespStatus 503 > > - BerespReason Service Unavailable > > - BerespReason Backend fetch failed > > > > How can this be? > > > > Martynas _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
