Still having the same problem.
Tried to reser my resolv.conf to use only the google dns, but still failing with the last version.
I can resolve the “web” hostname inside the relay container without problem
Processing triggers for libc-bin (2.24-11+deb9u4) ...
root@10256c8e4653:/work# ping web
PING web (172.29.0.23) 56(84) bytes of data.
64 bytes from sentry_onpremise_web_1.sentry_onpremise_default (172.29.0.23): icmp_seq=1 ttl=64 time=0.050 ms
Relay logs
relay_1 | 2020-06-17T12:06:59Z [rdkafka::client] ERROR: librdkafka: Global error: BrokerTransportFailure (Local: Broker transport failure): kafka:9092/bootstrap: Connect to ipv4#172.29.0.10:9092 failed: Connection refused (after 7ms in state CONNECT)
relay_1 | 2020-06-17T12:06:59Z [rdkafka::client] ERROR: librdkafka: Global error: AllBrokersDown (Local: All broker connections are down): 1/1 brokers are down
relay_1 | 2020-06-17T12:06:59Z [rdkafka::client] ERROR: librdkafka: Global error: BrokerTransportFailure (Local: Broker transport failure): kafka:9092/bootstrap: Connect to ipv4#172.29.0.10:9092 failed: Connection refused (after 2ms in state CONNECT)
relay_1 | 2020-06-17T12:06:59Z [rdkafka::client] ERROR: librdkafka: Global error: AllBrokersDown (Local: All broker connections are down): 1/1 brokers are down
relay_1 | 2020-06-17T12:06:59Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Failed to connect to host: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | 2020-06-17T12:06:59Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Failed to connect to host: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN
relay_1 | 2020-06-17T12:07:01Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Timeout while waiting for response
relay_1 | 2020-06-17T12:07:03Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Failed to connect to host: Connection refused (os error 111)
relay_1 | caused by: Connection refused (os error 111)
relay_1 | caused by: Connection refused (os error 111)
relay_1 | 2020-06-17T12:07:05Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Failed to connect to host: Connection refused (os error 111)
relay_1 | caused by: Connection refused (os error 111)
relay_1 | caused by: Connection refused (os error 111)
relay_1 | 2020-06-17T12:07:11Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:07:16Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:07:24Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:07:35Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: Server disconnected
relay_1 | caused by: Server disconnected
relay_1 | 2020-06-17T12:07:52Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:08:18Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:08:57Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:09:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:10:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:11:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:12:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:13:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:14:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:15:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
relay_1 | 2020-06-17T12:16:54Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: IO error: Connection reset by peer (os error 104)
relay_1 | caused by: Connection reset by peer (os error 104)
Sentry 20.7.0.dev02c38a38
I can give access to my environment if some sentry engineer wants to debug it…