From: MARLON BORBA (MBORBA@TRF3.GOV.BR)
Date: Wed Feb 26 2003 - 17:13:30 EST
Fellow AIXers,
We have, in our company, a two-frame RS/6000SP system and three standalone RS/6000 hosts.
The first SP tower has four nodes and the second one, three nodes.
Three networks interconnect these nodes:
i) the corporate network, 10.1/16 (hostnames with no special suffix);
ii) the administrative network, 172.16/16 (hostnames with _i suffix);
iii) the "fast-switching" internal network, 172.17/16 (hostnames with _sw suffix).
The administrative network (ii) connects the nodes in each frame with control workstations which are used to manage that frame. Please note, the administrative network does not link one frame with the other. The "fast-switching" network (iii) connects the nodes in each frame and the switches are interconnected in order to assure inter-frame communication. The corporate network is "seen" by every AIX machine in our network and all their clients.
We have a problem with NIS configuration. In our first AIX installation we (mistakenly I presume) configured the "default hostname" to be the _i-terminated one (i.e. the "administrative network" name). So if the DNS (corporate) name would be "gremio", we configured it to be "gremio_i", which resolves to 172.16.X.Y. The problem is, if we assign "gremio_i" as the NIS master server, it is only "seen" by hosts in the same frame (because NIS tries to communicate over the "administrative network", which does not link SP frames), and worse, it is not seen by machines outside the SP frames.
Changing the hostname is not an option, as we have software which depends on the "default hostname" for its licensing (e.g. OpenIngres). Using the switched network is not another option, because that network is not seen by other AIX (i.e. non-SP) hosts.
My question is, is there a way to force NIS to ignore the "default hostnames" and to comunicate ONLY by the corporate network, even if NIS masters and slaves are SP nodes?
Thanks for your advice,
Marlon.
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Marlon Borba
Divisao de Suporte Tecnico
TRF 3a. Regiao
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mborba@trf3.gov.br - marlonborba@acm.org
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