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Re: [Linux-cluster] CCSD ipv6 bind failures



hi,
   If anyone knows answers of following questions please let me know.

Regards,
Ashish

On Wed, Dec 5, 2012 at 7:22 PM, Ashish G <ashish ext123 gmail com> wrote:
hi Experts,
               I has few question on ccsd:
1. what is the purpose of ccsd listening on ipv4 and ipv6 addresses as follows in my 2 node HA setup? We do not use IPv6 in our setup.

netstat -antp |grep ccsd

tcp        0      0 0.0.0.0:50008               0.0.0.0:*                   LISTEN      18170/ccsd

tcp        0      0 ::1:50006                   :::*                        LISTEN      18170/ccsd


CCSD is invoked without any arguments:

root     18170     1  0 14:12 ?        00:00:00 /sbin/ccsd


2. Is it not sufficient to use IPv4 only by CCSD?

3. Sometimes on node reboot we see messages as follows:

"Unable to bind to backend ipv6 socket, but inet_ntop returned NULL pointer: Address already in use"

Does anyone know when is this problem seen?

4. If I invoke CCSD with "-4" option, will I get rid of the above message? since ipv6 code path will not hit.

root       461     1  0 14:28 ?        00:00:00 /sbin/ccsd -4

netstat -antp  |grep ccsd

tcp        0      0 127.0.0.1:50006             0.0.0.0:*                   LISTEN      461/ccsd

tcp        0      0 0.0.0.0:50008               0.0.0.0:*                   LISTEN      461/ccsd



Regards,
Ashish


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