sijie commented on issue #4812: Pulsar cannot resolve AWS ELB URL URL: https://github.com/apache/pulsar/issues/4812#issuecomment-515646227 @sudeepamin ``` org.apache.pulsar.shade.io.netty.resolver.dns.DnsResolveContext$SearchDomainUnknownHostException: Search domain query failed. Original hostname: 'a5b327ee3ad6d11e989f80a0e47fe403-954928901.us-east-1.elb.amazonaws.com' failed to resolve ``` ``` Caused by: org.apache.pulsar.shade.io.netty.resolver.dns.DnsNameResolverException: [/fec0:0:0:ffff:0:0:0:1:53] failed to send a query (no stack trace available) Caused by: org.apache.pulsar.shade.io.netty.channel.unix.Errors$NativeIoException: sendToAddress(..) failed: Network is unreachable ``` The exception you attached in this issue has indicated that Pulsar library has attempted to query the DNS domain and it failed due to network is unreachable. If the network is unreachable, that is beyond what Pulsar library / client can do. It has something related to how do you setup the cluster and the load balancer. You are using a vendor tool to setup the cluster and the load balancer. The Pulsar community has no knowledge about this vendor tool. So you'd better to reach out the vendor for this question.
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