In this post I’ll demonstrate how to create a Cluster Aware AIX (CAA) cluster on AIX 7.1. I’ll create a simple two-node CAA cluster. I’ll then check the cluster status and, finally, remove the cluster.   Before I start, I make sure that both nodes have entries in /etc/hosts on both systems.   node1[/] > grep node /etc/hosts 172.29.134.169   node1 172.29.152.160   node2   node2[/] > grep node /etc/hosts 172.29.134.169   node1 172.29.152.160   node2   I verify that cluster services are not active on both nodes.   node1[/tmp/cg]... [More]

Tags:  creating mkcluster lscluster caavg_private caa cluster 7.1 chris gibson creation aware aix

While attending the IBM Power Systems Symposium this week, I learnt that starting with AIX 7.1 (and AIX 6.1 TL6) JFS2 logging is disabled during a mksysb restore. You may be familiar with disabling JFS2 logs, if not, take a look at this IBM technical note:   https://www-304.ibm.com/support/docview.wss?uid=isg3T1012643   I’ve been unable to find any official documentation from IBM that mentions this new enhancement to the mksysb restore process. However, when I checked my own AIX 7.1 system I found the following statement/code in the... [More]

Tags:  mksysb disabled log=null logging jfs2 chris aix gibson

Did you know that you can connect to and query the new solidDB database used by Cluster Aware AIX (CAA)?   You can connect to the solidDB instance and issue SQL queries against the database. In the following example, I issued two queries: one to list the tables in the database and another to query information relating to the nodes in the cluster. The formatting in the second query is a mess, but you get the idea.   root@node1:/> /opt/cluster/solidDB/bin/solsql -x pwdfile:/etc/cluster/dbpass 'tcp localhost 2188' caa IBM solidDB SQL... [More]

Tags:  soliddb aware solsql caa gibson chris /opt/cluster/soliddb/bin/... cluster aix

This little tip was passed on to me by a friendly IBM hardware engineer many years ago.   When entering a capacity on demand (CoD) code into a Power system, you can tell how many processors and how much memory will be activated, just by looking at the code you’ve given by IBM.   For example, the following codes, when entered for the appropriate Power system, will enable 4 processors (POD) and 64GB of memory (MOD). I can also tell* that once the VET code is entered, this system will be licensed for PowerVM Enterprise Edition (2C28).  ... [More]

Tags:  cod power gibson mod aix activation demand pod capacity chris code on vet powervm