Hi guys,
For the record: the issue below was caused by a misconfigured API client. On 
one cluster node it was using the hosts IP address as tcpcerveraddress, on the 
other one it used tcpserveraddress localhost. After setting them both to 
localhost the database backup was working again on both nodes.
Kind regards,
Eric van Loon
Air France/KLM Storage Engineering

From: Loon, Eric van (ITOPT3) - KLM
Sent: donderdag 25 januari 2018 13:58
Subject: Backup db chalenges with 7.1.8

Hi guys,
I'm facing a new challenge because of the security enhancement in 7.1.8. In the 
past I installed 7.1.7 servers on a cluster configuration, which was working 
without any issues. With 7.1.8 TSM starts checking the GUID of the 
$$_TSMDBMGR_$$ node used and this changes as soon as the server switches to the 
other cluster node. This causes the backup to fail:

ANR0406I Session 49 started for node $$_TSMDBMGR_$$ (DB2/Linux) (SSL
ANR2987W Session ended because of machine GUID or local host IP address 
ANR3259W Session 49 for node $$_TSMDBMGR_$$ (DB2/Linux) refused - 
$$_TSMDBMGR_$$ node from an untrusted system is not allowed.
ANR0403I Session 49 ended for node $$_TSMDBMGR_$$ (DB2/Linux).

I found the circumvention to specify the parameter DBMTRUSTEDGUIDIGNORE YES in 
the dsmserv.opt, but that looks more like a fix than a solution...
How should one solve this issue properly?
Thanks for any help in advance!
Kind regards,
Eric van Loon
Air France/KLM Storage Engineering

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