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Sun Cluster 2.2 Release Notes

Sun Cluster Manager

This section describes how to use Sun Cluster Manager (SCM).

Monitoring Sun Cluster Servers With SCM

SCM provides a single interface to many of Sun Cluster's command line monitoring features. SCM consists of two parts: SCM server software, and the SCM Graphical User Interface (GUI). The SCM server runs on each node in the cluster. The SCM GUI runs in a Java Development Kit (JDKTM) 1.1-compliant browser such as HotJavaTM. The HotJava browser can be running on any machine, including the cluster nodes. The SCM GUI reports information on:

Note -

Refer to the Patch 107388-01 README for complete information on SCM.

Running the SCM GUI in a HotJava Browser

The following set of procedures outline what you need to do to run SCM in a HotJava browser with your system configuration.

Note -

If you choose to use the HotJava browser shipped with your Solaris 2.6 or Solaris 7 operating environment, there may be problems with the HotJava browser. See "Running SCM With the HotJava Browser", for more information. If you choose to use a later version of the HotJava browser, refer to the appropriate procedure depending on your software needs.

You may need to determine if you have the correct version of the following:

Note -

The Solaris 2.6 operating environment requires installation of JDK 1.1.6 (or later) and HotJava 1.1.4 (or later). The Solaris 7 operating environment requires installation of HotJava 1.1.4 (or later).

You need to determine whether you want to:

Depending on what you decide, refer to the appropriate procedure.

How to Download the JDK

Type the following from the console prompt on the server in your cluster:

# java -versio
java version "1.1.6"

If the system displays a lower version of java, follow the instructions download the JDK version 1.1.6 (or later) software from the following URL:

http://www.sun.com/solaris/java

How to Download HotJava

From the machine running the HotJava browser, select About HotJava from the Help menu.

If the browser displays a version lower than 1.1.4, or if you do not have a HotJava browser, follow the instructions to download the HotJava version 1.1.4 (or later) software from the following URL:

http://java.sun.com/products/hotjava/index.html

How to Run the SCM Applet in a HotJava Browser From a Cluster Node

  1. Run your HotJava browser on a node in the cluster.

  2. Remotely display it on an X windows workstation.

  3. Set the applet security preferences in your HotJava browser:

  4. Choose Applet Security from Preferences on the Edit menu.

  5. Click Medium Security as the Default setting for Unsigned applets.

  6. When you are ready to begin monitoring the cluster with SCM, type the appropriate URL.

    file:/opt/SUNWcluster/scmgr/index.html

  7. Click OK on dialog boxes that ask for permission to access certain files, ports, and so forth from the remote display workstation to the cluster node where the browser is started.

    Note -

    It might take HotJava some time to download and run the applet. No status information will appear during this time.

    Refer to the online help for complete information on menu navigation, tasks, and reference.

How to Set Up a Web Server to Run With SCM

If you choose, you can install a web server on the cluster nodes to run with SCM.

  1. Install a web server on all nodes in the cluster.

    Note -

    If you are running the Sun Cluster HA for Netscape HTTP service and an HTTP server on SCM, you need to configure the HTTP servers to listen on different ports. Otherwise there will be a port conflict between the two.

  2. Follow the web server's configuration procedure to make sure that SCM's index.html file is accessible to the clients.

    The client applet for SCM is in the index.html file in the /opt/SUNWcluster/scmgr directory. For example, go to your HTTP server's document root and create a link to the /opt/SUNWcluster/scmgr directory.

  3. Run your HotJava browser from your workstation.

  4. Set the applet security preferences in your HotJava browser:

    1. Choose Applet Security from Preferences on the Edit menu.

    2. Click Medium Security as the Default setting for Unsigned applets.

  5. When you are ready to begin monitoring the cluster with SCM, type the appropriate URL.

    For example, if you had created a link from the web server's document_root directory to the /opt/SUNWcluster/scmgr directory, you would type the following URL:

    http://clusternode/scmgr/index.html

  6. Click OK on dialog boxes that ask for permission to access certain files, ports, and so forth to the cluster node where the browser is started.

    Note -

    It might take HotJava some time to download and run the applet. No status information will appear during this time.

    Refer to the online help for complete information on menu navigation, tasks, and reference.

SCM Online Help System

SCM provides online help information on menu navigation, tasks, and reference.

How to Display SCM Online Help

To display the Help window from SCM, select Help Contents from the Help menu.

Alternatively, click on the Help icon (question mark) in the tool bar above the folder.

If necessary, you can run online help in a separate browser by typing the following URL:

file:/opt/SUNWcluster/scmgr/help/locale/en/main.howtotopics.html

For example, if you had created a link from the web server's document_root directory to the /opt/SUNWcluster/scmgr directory, you would type the following URL:

http://clusternode/scmgr/help/locale/en/main.howtotopics.html

Online Help Browser Display

When you finish viewing the online help, close its HotJava browser. Selecting online help again brings up a new browser and loads the help.