HACMP

This will get us ready to complete our setup with the HACMP configuration.

One of the adapters is the boot adapter, not used for HACMP.

Install HACMP if it is has not previously been installed on all the nodes.

These last steps need to be repeated for the different adapters to be assigned to the various networks for HACMP purposes.

It should not be automatically activated on restart so that it is only activated when HACMP starts it.

HACMP Planning Guide: This guide provides information necessary to plan and install the HACMP for AIX software.

If the config_too_long event is run, you should check the hacmp. out file to determine the cause and if manual intervention is required.

HACMP can be used for this type of solution on AIX.

The HACMP configuration for each cluster was also verified and synchronized prior to the upgrade.

So I'll take time here for a brief introduction, because HA in reality is performed by HACMP.

Say an application is using these disk to store its data and the customer wants to make this application highly available using HACMP.

Please note that this article uses terms PowerHA and HACMP interchangeably and assumes PowerHA V5. 5 is running on the cluster.

I also thank Glenn Miller for his outstanding support in all matters concerning AIX and HACMP setup.

Often a database administrator is not familiar with HACMP terminology.

They simplify the configuration of HACMP in conjunction with several applications.

Make sure you define these addresses within the proper respective PowerHA-defined network.

If you use some type of centralized user administration, then using IBM HACMP becomes much easier because your UIDs and GIDS are in sync.

We had HACMP clustered systems, so production workload was processed on another 595 while this one was down for the upgrade.

At the time of our setup, HACMP 5. 1 was not available.

The user uses the configuration data and smit pprc_ds to configuration HACMP.

HACMP has support statements for specific VSCSI configurations.

This article provides an introduction to PowerHA and shows how to set up and configure a simple two-node cluster.

Repeat the same steps as before for HADB1, creating both instances and installing the HACMP scripts.

Therefore, the first step is to define the shared DASD in HACMP.

PowerHA is a robust and effective tool for keeping resources available on AIX servers.

Cluster: A logical grouping of servers running PowerHA.

Heartbeat: This is a signal transmitted over PowerHA networks to check and confirm resource availability.

This defines the persistent IP addresses, again paying attention to pick the proper respective PowerHA-defined network.

You only need basic knowledge of HACMP and AIX to use this utility.

A number of steps must take place before you can configure an PowerHA cluster and make it available.

After this is added, return to "Add a network to the HACMP cluster" and also add the diskhb network.

In the Version 5. 1 of HACMP, this time is eliminated with the use of the enhanced concurrent access mode for the disks.

DB2 only uses a script which is triggered by HACMP in order to start or stop the instances based on failover need.

Do you still need High Availability solutions such as HACMP if you will be using this feature?

The software used to implement clustering and failover processes on AIX is IBM HACMP. HACMP does the following

The tasks to set up a high availability environment with HACMP on AIX are

To integrate existing PPRC to HACMP, we have to configure the following

The following terms are used throughout this article and are helpful to know when discussing PowerHA