Ip family comparability ipv4 & ipv6

Couchbase Server
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1

hi team,

have doubt on below cases 1&2,

case1:

couchbase SDK Apps are running in ipv4 and couchbase cluster runs in ipv6

case 2:

couchbase SDK Apps are running in ipv6 and couchbase cluster runs in ipv4

case 3:

couchbase SDK Apps are running in ipv4 and couchbase cluster runs in ipv4

case 4:

couchbase SDK Apps are running in ipv6 and couchbase cluster runs in ipv6

case 3&4 we know as there will not any challenges for connectivity and other compatibility issues.

[1][2]But what about where we have different ip families are there between couchbase cluster and couchbase sdk applications?

  1. Footnotes ↩︎

  2. Footnotes ↩︎

2

What environment are you referring to that is ipv6 only? AFAIK, every environment that supports ipv6 also supports ipv4.

ipv6 and ipv4 are not interoperable. That is not limited to couchbase.

3

understood @mreiche

how do we migrate the ip-family from ipv6 to ipv4, can we do it normal rolling fashion ?
if we are not choose ipv4 only or ipv6 only options while initialising the cluster then we can use mixed ip families in the cluster. the same can applicable for SDK and Couchbase Cluster scenario right?

4

how do we migrate the ip-family from ipv6 to ipv4, can we do it normal rolling fashion ?

If you have not specified ipv6, then you don’t have to “migrate to ipv4”. the server will listen on ipv4 if it is available, and also ipv6. Manage Address Families | Couchbase Docs

In your other post, there is an error message that the network configuration cannot be changed while auto-failover is enabled. Have you tried disabling auto-failover, changing the network configuration and then enabling auto-failover?

5

Refer to the documentation. https://docs.couchbase.com/server/current/manage/manage-nodes/manage-address-families.html. Sometimes it is simpler just to try things if it’s difficult to ascertain from the documentation.

You have a ticket open with customer support. They will help.