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Disabling IPv6

Rising Star

In a recent Predictive Cluster Validation Summary for one of my clusters, Cloudera Proactive Support states:


"The following hosts have IPv6 enabled, which is against our best practices, because it can cause connectivity problems. This is discussed in the CDH documentation. ("


Yet that page simply says that "IPv6 is not supported and must be disabled."


If this is a hard requirement, then why is there no documentation on *how* to disable IPv6 for the various supported OSs?  I understand that Cloudera may not want to get into the OS configuration business, but at least pointers to vender documentation should be provided.



Expert Contributor
Hi @mjarnold, I can comment on this on behalf of Ben. The docs received a minor improvement that advises the OS vendor to be contacted for complete information or any necessary assistance regarding disabling ipv6:

Networking Protocols Support
CDH requires IPv4. IPv6 is not supported and must be disabled.
Note: Contact your OS vendor for help disabling IPv6.

This was the resulting improvement in the docs stemming from the jira I filed after we first spoke about this issue. I know this isn’t much of a change, but we felt it was the most sound advice we could provide on the next-steps necessary.

If you have any feedback please do let us know. We sincerely appreciate your long-running excellent partnership here with us in Cloudera Support.


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Expert Contributor

Thank you Michael. I appreciate the links.