Prepare the Linux machine

 

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This section includes information on setting up the Linux operating system prior to the WebSphere Portal installation. Other components might require additional steps.

Before you install WebSphere Portal, review the following information to ensure that the machine is ready for installation.

 

Plan Linux disk space

If for any reason change the file system size, the Linux ext2 file system (which is used by default) does not allow you to change it. Therefore, you should carefully plan in advance for the size of the file system in order to avoid related problems. The following disk space is required for each directory:

/ 1.5 GB or more (root directory)
/opt 2.5 GB or more.

The default directory to install WebSphere Portal on Linux is /opt, which you could change to any directory you like later. By default, /opt is under / file system in default. If you choose to install WebSphere Portal under /usr, 3.5 GB or more is recommended.

/home 500 MB or more (home directory)

 

Set File Descriptor Limit

Prior to installing WebSphere Portal, set the file descriptor limit to 10240. For example: 

    ulimit -n 10240
If this is not done, the WebSphere Portal installation may fail.

 

Plan for using the installation program

To use the graphical user interface provided by the installation program, install and configure X server on Linux (for example X-Windows or GNOME). The installation program also supports silent installation, which is a text-only mode, and X server is not required in that case.

 

Checking the network setup

Proper network configuration is essential when installing WebSphere Portal. Verify the following network setup requirements before installation:

Fully qualified host.name WebSphere Portal also requires the use of a fully qualified host.name, which is typically the host.name of the server, along with its fully qualified domain name. To be sure that this is configured correctly, we can check with a simple ping before you start installation. For example, you could enter the following command at a command prompt: 

    ping yourserver.yourcompany.com
Localhost Verify that the hostname.domain name is correct. For example, you could enter the following command at a command prompt: 

    ping localhost

 

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