TSA/db2haicu error and resolution

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Especially with TSA and db2haicu, sometimes you see an error, and you have a bag of tricks that you try, even though you don’t understand exactly why they work. In this case, I had a brand-spanking-new server, with DB2 installed the very same day, and no matter what I did, db2haicu would fail on creating the domain with this error message in the diag.log:

Line # : 9386---2632-044 The domain cannot be created due to the following errors that were detected while harvesting information from the target nodes:
dbserver1.adomain.com: 2632-075 This node has a duplicate IP address (xxx.xxx.xxx.xxx) with node dbserver2.adomain.com. The duplicate address will not be used. Correct the network configuration on one of the nodes or use -c option to perform the operation.

On looking at an ifconfig, we saw, in part:

virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:xxx.xxx.xxx.xxx  Bcast:xxx.xxx.xxx.yyy  Mask:255.255.255.0
          inet6 addr: aaaa::aaa:aa:aaaa:a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:7239 (7.0 KiB)

So the Client’s DBA and I tried everything I could possibly think of before going back to the network/server team. The last thing on my list to try was uninstalling/re-installing the TSA software, as I described in this post: Using TSA/db2haicu to Automate Failover Part 3: Testing, Ways Setup can go Wrong and What to do (section “Other Failures”, #3)

And that worked. Again, don’t know why since we had just installed the server the same day, but in case someone sees a similar issue, I thought I’d put the solution out there.

Lead Db2 Database Engineer and Service Delivery Manager , XTIVIA
Ember is always curious and thrives on change. Working in IT provides a lot of that change, but after 17 years developing a top-level expertise on Db2 for mid-range servers and more than 7 years blogging about it, Ember is hungry for new challenges and looks to expand her skill set to the Data Engineering role for Data Science. With in-depth SQL and RDBMS knowledge, Ember shares both posts about her core skill set and her journey into Data Science. Ember lives in Denver and work from home for XTIVIA, leading a team of Db2 DBAs.

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