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From "Rick Trudeau (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ZOOKEEPER-2989) IPv6 literal address causes problems for Quorum members
Date Thu, 01 Mar 2018 20:35:00 GMT
Rick Trudeau created ZOOKEEPER-2989:
---------------------------------------

             Summary: IPv6 literal address causes problems for Quorum members
                 Key: ZOOKEEPER-2989
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2989
             Project: ZooKeeper
          Issue Type: Bug
          Components: quorum
    Affects Versions: 3.5.3
            Reporter: Rick Trudeau


We're using ZK 3.5.3-beta.

When using literal IPv6 addresses in the zoo.cfg.dynamic file, ZK fails to come up with the
connection to the peer ZKs keeps getting reset.

zookeeper.log indicates a badly formed address is the cause.
{noformat}
<2018.03.01 15:14:30 163 -0500><E><sdn3></2001:db8:0:0:0:0:0:4:3888><org.apache.zookeeper.server.quorum.QuorumCnxManager>
org.apache.zookeeper.server.quorum.QuorumCnxManager$InitialMessage$InitialMessageException:
Badly formed address: 2001:db8:0:0:0:0:0:2:3888{noformat}
Our zoo.cfg.dynamic uses literal IPv6 addresses which according to ZOOKEEPER-1460 is supported.
{noformat}
server.1=[2001:db8::2]:2888:3888;2181
server.2=[2001:db8::3]:2888:3888;2181
server.3=[2001:db8::4]:2888:3888;2181{noformat}
 

Digging into QuorumCnxManager.java, InitialMessage.parse attemps to seperate the host portion
from the port portion using ":" as a delimeter, which is a problem for IPv6 IPs.  And there's
this comment:
{code:java}
// FIXME: IPv6 is not supported. Using something like Guava's HostAndPort
// parser would be good.{code}
So it looks like peers address:port is failing to be parsed if they are specified as literal
IPv6 addresses.  To confirm a workaround, I replaced my zoo.cfg.dynamic with hostnames instead,
and everything worked as expected.

 

 

 

 



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