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Wrong hostnames displayed during discovery of Infiniband Switch in EM Cloud Control (Doc ID 1479677.1)

Last updated on AUGUST 02, 2012

Applies to:

Exadata Database Machine X2-2 Full Rack - Version Not Applicable and later
Exadata Database Machine X2-2 Half Rack - Version Not Applicable and later
Exadata Database Machine X2-2 Qtr Rack - Version Not Applicable and later
Exadata Database Machine X2-8 - Version Not Applicable and later
Information in this document applies to any platform.

Symptoms

While discovering a new Exadata Database Machine in EM Cloud Control 12c, the IB switch hostnames displayed are different from the actual hostnames of each IB switch.

 

Example:

a)  EM Console Discovery results page lists the IB Switch name as exduatsw-ib1.  Where as, the actual IB Switch Hostname is exdprdsw-ib1


b)  'ibnetdiscover' command also lists the wrong IB Switch Hostaname as exduatsw-ib1

#

# Topology file: generated on Tue Jul 31 15:13:10 2012
#
# Initiated from node 0021280001ceb126 port 0021280001ceb127

vendid=0x2c9
devid=0xbd36
sysimgguid=0x21284691fba0a3
switchguid=0x21284691fba0a0(21284691fba0a0)
Switch    36 "S-0021284691fba0a0"        # "SUN DCS 36P QDR exduatsw-ib1.doe.mass.edu" enhanced port 0 lid 1 lmc 0
[19]    "S-002128469520a0a0"[32]        # "SUN DCS 36P QDR exduatsw-ib3.doe.mass.edu" lid 3 4xQDR
[21]    "S-0021284696f6a0a0"[32]        # "SUN DCS 36P QDR exduatsw-ib2.doe.mass.edu" lid 4 4xQDR

vendid=0x2c9
devid=0xbd36
sysimgguid=0x2128469520a0a3
switchguid=0x2128469520a0a0(2128469520a0a0)
Switch    36 "S-002128469520a0a0"        # "SUN DCS 36P QDR exduatsw-ib3.doe.mass.edu" enhanced port 0 lid 3 lmc 0

c)  Testing each hostname using nlslookup shows:

[oracle@exduatdb01 onecommand]$ nslookup exduatsw-ib1
;; Got SERVFAIL reply from 10.0.0.2, trying next server
Server:         10.0.0.20
Address:        10.0.0.20#53

** server can't find exduatsw-ib1: SERVFAIL

Note : databasemachine.xml in this case had correct IB Switch hostnames which is exdprdsw-ib1 

 

Changes

The IB Switch hostname was changed after initial deployment of this Exadata rack from exduatsw-ib1 to exdprdsw-ib1

Cause

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