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https://issues.apache.org/jira/browse/KAFKA-1092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13807258#comment-13807258
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Roger Hoover commented on KAFKA-1092:
-------------------------------------
Note: this change is backward compatible. Not specifying the two new optional
parameters will yield the same behavior as before
> Add server config parameter to separate bind address and ZK hostname
> --------------------------------------------------------------------
>
> Key: KAFKA-1092
> URL: https://issues.apache.org/jira/browse/KAFKA-1092
> Project: Kafka
> Issue Type: New Feature
> Components: config
> Affects Versions: 0.8.1
> Reporter: Roger Hoover
> Attachments: KAFKA-1092.patch
>
>
> Currently, in server.properties, you can configure host.name which gets used
> for two purposes: 1) to bind the socket 2) to publish the broker details to
> ZK for clients to use.
> There are times when these two settings need to be different. Here's an
> example. I want to setup Kafka brokers on OpenStack virtual machines in a
> private cloud but I need producers to connect from elsewhere on the internal
> corporate network. With OpenStack, the virtual machines are only exposed to
> DHCP addresses (typically RFC 1918 private addresses). You can assign
> "floating ips" to a virtual machine but it's forwarded using Network Address
> Translation and not exposed directly to the VM. Also, there's typically no
> DNS to provide hostname lookup. Hosts have names like "fubar.novalocal" that
> are not externally routable.
> Here's what I want. I want the broker to bind to the VM's private network IP
> but I want it to publish it's floating IP to ZooKeeper so that producers can
> publish to it.
> I propose a new optional parameter, "listen", which would allow you to
> specify the socket address to listen on. If not set, the parameter would
> default to host.name, which is the current behavior.
> #Publish the externally routable IP in ZK
> host.name = <floating ip>
> #Accept connections from any interface the VM knows about
> listen = *
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