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https://issues.apache.org/jira/browse/SPARK-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15861453#comment-15861453
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Danny Robinson commented on SPARK-4563:
---------------------------------------
I found one completely hacked way to allow my Spark Driver in Docker connecting
to non-docker Spark to work. This is Spark 1.6.2.
export SPARK_PUBLIC_DNS=IPADDR_OF_DOCKER_HOST_OR_PROXY
export SPARK_LOCAL_IP=IPADDR_OF_DOCKER_HOST_OR_PROXY
at container startup I do this:
echo -e "`hostname -i` `hostname` ${HOSTNAME_OF_DOCKER_HOST_OR_PROXY}" >>
/etc/hosts
Essentially, the exports seem to control the IP that Spark UI & BlockManager
recognize
The hosts file hack allows the spark driver to resolve the external hostname as
if it was a local hostname, and therefore it knows which interface card to
listen on, and then uses the hostname in the connection info it sends to the
executors. When the executors connect back, they are obviously resolving the
hostname to the correct external IP.
Reason I say HOST or PROXY is that I run haproxy as a docker load-balancer at
the front of my swarm. That ensures i never have to worry exactly which node
is running the Spark driver, all traffic routes via haproxy.
Agree with many here though, this is crazy complicated and inconsistent.
> Allow spark driver to bind to different ip then advertise ip
> ------------------------------------------------------------
>
> Key: SPARK-4563
> URL: https://issues.apache.org/jira/browse/SPARK-4563
> Project: Spark
> Issue Type: Improvement
> Components: Deploy
> Reporter: Long Nguyen
> Assignee: Marcelo Vanzin
> Priority: Minor
> Fix For: 2.1.0
>
>
> Spark driver bind ip and advertise is not configurable. spark.driver.host is
> only bind ip. SPARK_PUBLIC_DNS does not work for spark driver. Allow option
> to set advertised ip/hostname
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