Installing additional servers

After you install software on a single server, or after you install the master server for a distributed server installation, you can install additional servers to support crawling, indexing, and search processing.

Before you begin

You must ensure that all software that is needed to support the intended server role is installed before you run the Watson Explorer Content Analytics installation program. For example, if you add a search server and want to use WebSphere® Application Server to support your search applications, you must ensure that a supported version of WebSphere Application Server is installed before you add the server. You cannot use WebSphere Application Server and the embedded web application server on the same system.

About this task

When you add servers, you install the software and specify paths and ports for your system environment. Later, you use the administration console to assign the role of the server. The types of servers that you can add depend on the supported system configurations.

If you add high availability servers, the high availability server and the master server must share the same data directory (ES_NODE_ROOT). The high availability servers are supported through IBM® PowerHA® for AIX® and Microsoft Cluster Service (MSCS) on Windows. Before you add a high availability server, you must first install and configure IBM PowerHA for AIX or Microsoft Cluster Service on the high availability server and the corresponding master server with the same configuration settings. If you add multiple high availability servers in a distributed server installation on Windows, you must create a separate cluster for each high availability server.

Before you install Watson Explorer Content Analytics on a high availability server, prepare any required resources such as the storage device on which you installed the Watson Explorer Content Analytics data directory. Ensure that the required resources are online to the server on which you plan to install the product.

Restriction: You cannot add high availability servers if you install Watson Explorer Content Analytics as a non-root user.

Procedure

To add servers by using the graphical installation program:

  1. From the product DVD or electronic distribution image, extract the files in the .zip file or .tar file for your operating system and run the appropriate command:
    Option Description
    AIX or Linux
    1. Enter: ./launchpad.sh
    2. To view information about prerequisites or any known issues before you install the product, click Prerequisite Information or Release Information.
    3. Click Install Product and then click the action to launch the installation program.
    Windows
    1. Double-click the launchpad.exe file or enter launchpad.exe in a command window.
    2. To view information about prerequisites or any known issues before you install the product, click Prerequisite Information or Release Information.
    3. Click Install Product and then click the action to launch the installation program.
  2. Follow the instructions in the installation wizard. When you specify installation options:
    1. Verify the fully qualified host name of this computer. You cannot specify an IPv6 address as the host name of the server.
    2. Accept or change the user name and password for the default Watson Explorer Content Analytics administrator. The administrator ID and password must be the same on all servers.

      To administer the Watson Explorer Content Analytics system, you log in as the master administrator with this user name and password. The default value is esadmin. If you log in with a non-root user ID to start the installation program, you cannot change the user name and you cannot select the check box to create the user. To specify a domain user, use the format username@domain name. The domain user cannot be created by the installation program.

      If you plan to use WebSphere Application Server instead of the embedded web application server, specify the user name for an administrative user who is registered in the LDAP server registry. Authentication for all administrative and application users that you add to the system is handled through WebSphere Application Server global security.

    3. For the server type, select Additional server.
  3. Click Install to use the default settings for all other installation options and start installing the software.
  4. Optional: If you want to change the default settings, click Advanced Options instead of clicking Install. In the following cases, you must click Advanced Options to change the default settings:
    • If you add a high availability server, you must specify the path to the data directory that is shared by the master server and the high availability server. You can ignore the warning message that the installation program will overwrite the data directory.
    • If you add a search server and plan to use WebSphere Application Server instead of the embedded web application server, you must click Advanced Options to specify information about your WebSphere Application Server installation.
    1. Use the following guidelines when you specify installation options:
      • On AIX or Linux, if you do not accept the default paths for the installation and data directories, ensure that the paths that you specify do not contain spaces in the path names.
      • Ensure that the installation directory for each additional server is a separate, non-shared directory.
      • Ensure that the default ports do not conflict with any ports that are already assigned to other applications on this computer.
      • If you select the option to use WebSphere Application Server and global security is enabled, you must specify the WebSphere Application Server administrative user name and password.
    2. On the summary page, review the options that you selected and click Install to start installing the software.
  5. On Windows, restart the server.
  6. Log in as the Watson Explorer Content Analytics administrative user and use one of the following methods to start the common communication layer (CCL) service:
    • On AIX or Linux, enter startccl.sh -bg.
    • At a Windows command prompt, enter startccl.
    • Use the Windows Services administrative tool to start the CCL in the background:
      1. Start Windows Services: Start > Programs > Administrative Tools > Services.
      2. Right-click Watson Explorer Content Analytics and click Start.
  7. Verify that the CCL port is on listen mode (for example, use the netstat -na command). Also verify that the host name is updated on the domain name server (DNS) and that it can be pinged from the master server.

What to do next

After you install the software on an additional server, open the administration console on the master server and assign an appropriate role for the additional server. If you installed a high availability server, you must configure the server before you assign the role.

Related tasks:
Configuring high availability on Windows
Configuring high availability on AIX
Adding servers to the system