Tranquility server throw error during receiving the http post request

I have a weird error , when I installed the Tranquility server in the same node with overlord, coordinator , historical …

then Tranquility is working as expected ( even broker server is up and running in different node). However, when I am trying to running stand alone Tranquility Server in delicate node. I got this error below .

Jan 10, 2019 9:48:28 PM com.twitter.finagle.Init$$anonfun$1 apply$mcV$sp

INFO: Finagle version 6.31.0 (rev=50d3bb0eea5ad3ed332111d707184c80fed6a506) built at 20151203-164135

2019-01-10 21:48:29,148 [ClusteredBeam-ZkFuturePool-8fc8df54-733b-4edd-a3eb-ecb4a36e0db2] INFO c.m.c.s.net.finagle.DiscoResolver - Updating instances for service[druid:overlord] to Set()

2019-01-10 21:48:29,221 [ClusteredBeam-ZkFuturePool-8fc8df54-733b-4edd-a3eb-ecb4a36e0db2] INFO c.m.t.finagle.FinagleRegistry - Created client for service: disco!druid:overlord

2019-01-10 21:48:29,328 [ClusteredBeam-ZkFuturePool-8fc8df54-733b-4edd-a3eb-ecb4a36e0db2] WARN c.m.tranquility.finagle.FutureRetry$ - Transient error, will try again in 16,387 ms

com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=, Dtab.local=

at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]

2019-01-10 21:48:45,732 [Hashed wheel timer #1] WARN c.m.tranquility.finagle.FutureRetry$ - Transient error, will try again in 33,949 ms

com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=, Dtab.local=

at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]

Nevermind , I got it my overlord , historical … are not up and running