Federation Manager Release Notes › Known Issues › Installation, Startup and Upgrade Issues › Startup Problems on Linux Systems Due to Insufficient Entropy (135665)

Startup Problems on Linux Systems Due to Insufficient Entropy (135665)

Symptom:

Federation Manager installed on a Linux system can experience startup problems due to insufficient entropy. If there is not enough entropy, one of the following symptoms can occur:

• Startup fails and the following error message displays:

  Startup failure!
  Server could not be started and initialized successfully. Wizard will abort the configuration.
  

• Federation Manager starts up slowly.

Solution:

To increase the entropy pool, do one of the following:

• Add a symbolic link for /dev/random to dev/urandom.

  The Federation Manager installer checks whether the /dev/random is a symbolic link to /dev/urandom. If there is no symbolic link, the installer displays an error message and aborts the installation.

  To add the symbolic link:

  1. Log on the Federation Manager system as root.
  2. Rename /dev/random to /dev/random.org. Example:

     mv /dev/random /dev/random.org
     

  3. Create the link using the following syntax:

     ln -s /dev/urandom /dev/random
     

  4. Restart the random generator daemon.
  5. Rerun the installation.

  If you run an unattended installation, the error message gets logged to the installation log file.

• Refer to the documentation for your Linux system to increase the entropy pool.