Solstice Enterprise Manager 4.1 HA Installation Guide Doc Set ContentsPreviousNextIndex


Chapter 2

Installing SEM-HA

This chapter provides instructions for installing High Availability for Solstice EM (SEM-HA).

The chapter describes the following topics:

2.1 Summary of Installation Procedure

Installing HA comprises:

  1. Reading and understanding the contents of this chapter.

  2. Planning your installation layout based on your administrative needs.

  3. Filling up the Installation Checklist.

  4. Running the installation program from the product CD-ROM.

  5. Responding correctly to the prompts displayed by the install program.

  6. Running the post-installation procedures, see Post-Installation Procedure.

2.2 Choosing a Directory for SEM-HA Installation

While installing SEM-HA you will be prompted to choose a default/non-default location for the software. The choice of default or non-default is an individual judgement based on the administrative needs of your system.

2.2.1 Installing to a Default Location

If you choose to locate the software in the default location, install will place all the software files in a location on the global file system that you specify. The advantage of choosing the default location is that all the files used by Solstice EM will be on the highly available global system. Should any node crash, the files on the global file system are still available since they are on the shared multihosted disks. If you have chosen to mirror the disks on the multihosted disks, the files will also be protected against individual failures of the multihosted disks.


Note – To find out how to use disk-mirroring in the multihosted disks, refer the Volume Manager documentation for the volume manager that has been installed in your Cluster.

Another advantage of placing all the files in the global file system is that there will be only one copy of the files, making administration easier.


Note – There are some files that cannot be placed on the global file system. These will always be installed on the local disk.

If you choose to use the default install location, there are some issues that you should consider.

2.2.2 Installing to a Non-default Location

If you choose a non-default location you have the option of specifying the location, either on local disk or on the global file system. If you choose the global file system, make sure that the directory that you specify exists on the global file system. The SEM-HA install program will not create it for you.


Note – There are some files that cannot be placed on the global file system. These will always be installed on the local disk.


Note – Runtime data will always be stored on the global file system. This is because this data will be used and modified by Solstice EM when it is running on any of the cluster nodes, and hence should be in a common location. Because of this you will have to specify a location on the global file system for this data.

If you choose to install on the local disk of each node, the installation program will create separate copies of the executable files on the local disk of each node.


Note – You cannot install SEM-HA on different directories for each node on the global file system.

2.3 Configuring Cluster for SEM-HA

To configure cluster you will have to perform the following steps:

1. Make sure Sun Cluster 3.0 is installed correctly with Solstice DiskSuite or Veritas Volume Manager

2. Identify Shared File System

3. Identify Cluster Resources

2.4 Installing SEM-HA

Perform the following steps to install SEM-HA.

1. Begin by installing SEM-HA on the primary cluster node.

For installing, follow the installation procedure as instructed in the Solstice EM 4.1 Installation Guide.

2. Choose Yes when asked by the install program Would you like to install EM for High Availability, and follow the steps as instructed on the screen.


Note – If you are not asked Would you like to install HA, then check your Sun Cluster installation.


Note – Do not use the pkgadd utility to install SEM-HA.

3. Run the install program on each secondary node successively.


Note – Do not run the install program simultaneously on more than one node.

4. Perform the Post-Installation procedure.

2.5 Post-Installation Procedure


Note – SEM-HA should have been successfully installed on all nodes before you can execute the following steps.

After SEM-HA has been installed successfully without errors on all the cluster nodes, on the primary node do the following:

1. Run the scstat(1M) cluster command and make sure that:

2. If the status of the resource group and the resources are as specified above, execute the command:

/opt/SUNWconn/em/bin/get_local_host

If you have chosen to install in a non-default directory, then this command must be perpended by the appropriate path.
Make sure that the get_local_host command returns the name of the logical host and not the actual physical hostname.

3. Run the command:

em_services -reload

This will install the databases.


Note – If you have to load large amounts of configuration information, you may want to add -nomonit option to disable the monitor.

4. After the reload is successfully completed, and the platform comes up, stop the platform by executing:

em_services -stop

5. Now, on a secondary node, repeat steps 1-4 above.


Note – Make sure that the em_services data service is always offline.

6. Repeat the above step on every secondary node.

7. On the primary node bring the group containing em_services online, by executing:

swswitch -z -g <groupname> 
-h <primary node name>

Now, enable the em_services data service by executing:

scswitch -e -j em_services

8. Check that the platform comes up successfully.

The platform is now running in HA mode.

2.6 What to do Next

After completing the installation, continue with the registering and running SEM-HA. Chapter 3 includes instructions for registering and running the Solstice EM with the high availability option.


Sun Microsystems, Inc.
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