[HTCondor-users] HTcondor High-Availability and dual-stack

[Carles Acosta <cacosta@xxxxxx>]

Dear all,

We are doing some testing with a small Htcondor pool with dual-stack. We 
are running the development version 8.5.4.

At the beginning, we were using the options: ENABLE_IPV4 = auto, 
ENABLE_IPV6 = auto and PREFER_IPV4 = false, so, our idea was to force 
HTcondor to use IPv6 as preferred option. We observed that the 
communication between the execution nodes and the central managers was 
fine, also with the schedds, but we had problems with the condor_had 
daemon in our central managers.

In the HADlog, we can see (where ipv4 and ipv6 are the corresponding 
addresses):

HAD CONFIGURATION ERROR:  my address 
'<ipv4:51450?addrs=[ipv6]-51450+ipv4-51450>'is not present in HAD_LIST 
'xxxx.pic.es:51450, xxxx.pic.es:51450'

The High Availability daemon fails and then the negotiator daemon is not 
running in any of our central managers.

Similarly, changing to PREFER_IPV4 = true doesn't solve the problem and 
we see:

HADStateMachine::setReplicationDaemonSinfulStringhost names of machine 
and replication daemon do not match: ipv4:51450?addrs=ipv4-51450+[ipv6 
vs. ipv4

Thus, we have to change to ENABLE_IPV4 = false and PREFER_IPV4 = false, 
to have High-Availability working again with IPv6 (or ENABLE_IPV6= false 
to use IPv4).

I'm not sure if I'm using the correct options or this is a known issue.

Thanks in advance.

Best regards,

Carles

--
Carles Acosta i Silva
PIC (Port d'Informacià CientÃfica)
Campus UAB, Edifici D
E-08193 Bellaterra, Barcelona
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Fax: +34 93 581 41 10
http://www.pic.es  
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