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Recovering a Failed Primary HA Host


You can recover a failed primary high-availability (HA) JSA host if the build version of the primary HA host is the same as the JSA build version installed on the secondary HA host.

Ensure that the following requirements are met:

  • The required hardware is installed.

  • You need the cluster virtual IP address and the primary HA host IP address. You can identify the IP address in the System and License Management window. For more information, see Viewing HA Cluster IP Addresses.

  • A keyboard and monitor are connected by using the VGA connection.

  1. Type root at the login prompt to start the installation wizard.
  2. Accept the End User License Agreement.
  3. Select the appliance type:
    • Appliance Install

    • Software Install

  4. In the Type of Setup window, select HA Recovery Setup.
  5. Follow the instructions in the wizard.
  6. Configure the JSA network settings.
    1. In the Cluster Virtual IP Address Setup window, enter the cluster virtual IP address.

    2. In the Network Information Setup window, enter the original hostname and the IP address of the primary HA host.


    When an HA cluster is created, “-primary” is appended to the original hostname of the primary HA host. Do not include “-primary” when you enter the original hostname in the Network Information Setup window.

  7. Configure the JSA root password.
  8. Review your software version. If your secondary HA host patch version is newer than the software on this appliance, download and install the SFS from Juniper Support website to upgrade this appliance to match the software version.
  9. Log in to the JSA user interface.
  10. Select Main menu > Admin > System and License Management > Systems.
  11. Highlight the primary HA host that you are restoring and select High Availability > Restore System.