Version 1.0.10.1 release notes (August 2018)

What's new

Db2 container is updated to the latest version. For more information on the fixes, see https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.wn.doc/doc/r0051514.html

Defect fix

In Integrated Analytics System Versions 1.0.9.0 and 1.0.10.0, the MTU of the fbond:Fl interface is incorrectly specified. When the master node is established or moved, this defect might be noticed. The impact of this defect is that GPFS head nodes have a severely restricted packet flow, and frequently fall out of the cluster. The issue can impact all nodes in a GPFS cluster. IAS Version 1.0.10.1 fixes this issue.

However, if you are unable or unwilling to upgrade to at least 1.0.10.1, the following workaround might be applied:

1. Determine the number of HA Domains. This number is H in the following steps.
2. Determine the number of nodes in a Domain. This number is X in the following steps.

   If the number of HA Domains H is more than 1, then X is 7. If the number of HA Domains H is 1, then X is 3 or 5.

3. Substituting H and X, run the following command from a node:

   for N in {01..H}{01..X}; do ssh node${N} sed -i -e '/MTU/s/1500/9000/'
             /etc/sysconfig/network-scripts/ifcfg-fbond:Fl; done

4. Run ap state -d.
5. If the platform status is not stopped, determine the master node by running ap node -d.
6. If the platform status is not stopped, run apstop -p.
7. Using the same H and X values as in the previous steps, run the following command from any node:

   for N in {01..H}{01..X}; do ssh node$N \(\(ip link show dev fbond \| grep -q 1500\) \&\&
             echo "$(hostnamectl --static) has bad MTU"\) \|\| echo ${N}; done

   The command lists nodes that have incorrect MTUs.
8. On all the nodes listed with incorrect MTUs, run ifdown fbond; ifup fbond.
9. If you have an external interface such as fbond.4084, run ifdown fbond.4084; ifup fbond.4084.
10. Run ifup fbond:Fl only on the master node.
11. If you have an external interface such as fbond.4084:0:Fl, run ifup fbond.4080:0:Fl.
12. To start the platform again, run apstart.