4.4 Configuring the caching locators in clusters (caching using TCP only)

If you implement caching for your LiveCycle cluster by using TCP, configure the TCP locators to find other members of the LiveCycle cluster.

Note: This section does not apply if you implement caching for your LiveCycle cluster by using UDP. (See 6.1.2 Configuring server start argumentsto configure caching for your LiveCycle cluster using UDP.)

Do the following to enable LiveCycle cluster caching using TCP:

  • Ensure that the TCP locators are installed and configured. TCP locators are installed in the [LiveCycle root]/lib/caching directory, with a default configuration, when you install LiveCycle. You can change the default configuration. (See Modifying the TCP locators.)

  • Configure each node in the LiveCycle cluster to use the locators. (See 6.1.2 Configuring server start arguments.)

  • Ensure that TCP locators are running.

4.4.1 Modifying TCP locators

The LiveCycle installer creates a default configuration of the TCP locators that is ready to use without modification. You can move the locators to any computer on your network and run them on that computer. The locators do not have to reside on a computer that is a member of the LiveCycle cluster. You can also create additional failover locators to support high availability in your cluster. (See To install the TCP locators:.)

You can also modify the TCP locators to use a port other than the default port (22345). (See To modify the default locator port (Windows): or To modify the default locator port (UNIX):.)

4.4.2 Install TCP locators

  1. Log on to the computer where you installed LiveCycle and navigate to the [LiveCycle root]/lib/ caching directory.

  2. Copy the caching directory and its contents to the computer on which you want to run the locators.

    You can start TCP locator from default location. You should copy the caching directory to another location, only if:

    • You want to run TCP locator on a machine that does not have LiveCycle.

    • You do not want to start TCP locator from default location.

4.4.3 Modify the default locator port (Windows)

  1. Open the startlocator.bat file in a text editor. The startlocator file for a default installation is on the computer where you installed LiveCycle, in the [LiveCycle root]/lib/caching directory.

  2. Change the default port number (22345) to your preferred port number in the following properties:

        set port=22345 
        -Dlocators=localhost[22345]
    The port number can be any available port between 1025 and 65535. See Modifying the JBoss run file for steps to complete the configuration.
    Important: Ensure that the port number that is configured here matches the port number that is configured in the JVM argument of each node of the LiveCycle cluster.
  3. (Computers with multiple network cards only) If the computer hosting the locator has multiple network cards, set the following properties in the script:

    set bindaddr=<bind IP address>

    Where <bind IP address> is the IP address that the locator will listen on. You must specify the <bind IP address> for the JVM argument adobe.cache.cluster-locators on each node in your LiveCycle cluster.

    Note: If you do not specify the bind address and the bind port in the startlocator script, you will be prompted to input these values when you execute the script. However, for IPv6, you must specify the bind address and the bind port in the startlocator script itself.
  4. Save the edited file.

  5. Repeat steps 1 to 4 on any additional locators for your LiveCycle cluster.

4.4.4 Modify the default locator port (UNIX)

  1. Open the startlocator.sh file in a text editor. The startlocator file for a default installation is located on the computer where you installed LiveCycle, in the [LiveCycle root]/lib/caching directory.

  2. Change the default port number (22345) to your preferred port number in the following properties:

        GF_PORT=22345 

    The port number can be any available port between 1025 and 65535.

    Important: Ensure that the port number that is configured here matches the port number that is configured in the JVM argument of each node of the LiveCycle cluster.
  3. (Computers with multiple network cards only) If the computer hosting the locators has multiple network cards, modify the following argument:

            GF_BIND_ADDRESS="<bind IP address>"

    Where <bind IP address> is the IP address that the locator will listen on. You must specify the <bind IP address> for the JVM argument adobe.cache.cluster-locators on each node in your LiveCycle cluster.

    Note: For IPv6, it is recommended that you specify the bind address and the bind port in the startlocator script itself.
  4. Save the edited file.

  5. Repeat steps on any additional locators for your LiveCycle cluster.

4.4.5 Start the TCP locators

You must start the TCP locators before you start your cluster. If the TCP locators are not running when you start the members of the LiveCycle cluster, caching will not function.

  1. On the computer where the TCP locators are installed, navigate to the caching directory. For a default installation, the TCP locators are installed on the computer where you installed LiveCycle, in the [LiveCycle root]/lib/caching directory.

  2. (IPv6 only) Modify startlocator.bat (Windows) or startlocator.sh (UNIX) and add the following JVM arguments:
            -Djava.net.preferIPv6Stack=true 
            -Djava.net.preferIPv6Addresses=true
  3. Run the appropriate file:

    • (Windows) startlocator.bat

    • (UNIX) startlocator.sh

  4. Repeat above steps on any additional locators for your LiveCycle cluster.

Note: (Windows Only)On running startlocator script, you would be prompted to change the default value. You can choose to keep the default values provided in the script or you can provide new values.

4.4.6 Stop TCP locators

  1. On the computer where the TCP locators are installed, navigate to the caching directory. For a default installation, the TCP locators are installed on the computer where you installed LiveCycle, in the [LiveCycle root]/lib/caching directory.

  2. Run the appropriate file:

    • (Windows) stoplocator.bat

    • (UNIX) stoplocator.sh

  3. Repeat steps 1to 2 on any additional locators for your LiveCycle cluster.

Note: If you are not using the default values in the startlocator script and mentioned specific IP address and port values, specify the same values in the stoplocator script. Otherwise, the stoplocator script may fail to stop the locators.

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