Comments (3)
Yes, hostnames are possible...
What value of CORE_CONF_fs_defaultFS
are you using and can you otherwise start some other container in the Swarm network and simply ping namenode
?
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When using Swarm and container service names, you'll need to verify your overlay network and its DNS server are working
https://docs.docker.com/engine/swarm/services/#connect-the-service-to-an-overlay-network
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