The feature you're asking about actually has nothing to do with supporting grpclb in DNS; it's actually about how to use an alternative DNS server for testing.
I originally added support for specifying an alternative DNS server by IP address (not hostname) to the c-ares DNS resolver implementation in https://github.com/grpc/grpc/pull/10706, although there was a bug that prevented it from working, which I fixed in https://github.com/grpc/grpc/pull/11954. If your build includes those PRs, then you should be able to use the c-ares resolver with an alternative DNS server specified as an IP address. Note that the c-ares resolver is not currently the default DNS resolver; to enable it, you need to run with the environment variable GRPC_DNS_RESOLVER=ares. There are still a few features missing from the c-ares DNS resolver (such as CNAME resolution and address sorting), which is why it's not yet the default, but we're working to fix that. On Tue, Aug 8, 2017 at 2:02 AM, 谭锦彪 <[email protected]> wrote: > Hi,Roth. > > I got "dns_resolver.c:252] authority based dns uri's not > supported", when use dns like below: > ChannelArguments args; > args.SetLoadBalancingPolicyName("round_robin"); > GreeterClient greeter(grpc::CreateCustomChannel( > "dns://localhost:8600/sag_test_grpc.service.consul-dev.", > > > grpc::InsecureChannelCredentials(), args)); > > So What's your plan to supports this? > > 在 2017年2月1日星期三 UTC+8上午2:30:04，Mark D. Roth写道： >> >> I've put together the following gRFC for encoding grpclb data in DNS: >> >> https://github.com/grpc/proposal/pull/10 >> >> As per the gRFC process, please keep discussion in this thread. All >> comments welcome. >> >> Thanks! >> >> -- >> Mark D. Roth <[email protected]> >> Software Engineer >> Google, Inc. >> > -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/grpc-io. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/grpc-io/0c3f5bcc-d5a4-48b2-9813-c31d884c94fb%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/0c3f5bcc-d5a4-48b2-9813-c31d884c94fb%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Mark D. Roth <[email protected]> Software Engineer Google, Inc. -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CAJgPXp4u--8bvyUwTMnzSHWpTjcPs8K-iFT_zR_YvQ3syVSyTg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
