Junos VM: Signed third-party application installation

You can install signed third-party application installation and carry over the application between upgrades.

The backup of third-party package occurs during upgrade. Hence, the package is restored even if the installed package is deleted or uninstalled before a reboot. However, as the third party package restoration depends on the contents saved on the disk during upgrade and the configuration to allow the package to be installed, restoration is not possible when

• Configuration is removed after upgrade
• Content is removed due to deletion by configuring request vmost zeroize command

On platforms where jinstall-host.tgz images are installed, the minimum space required for the backup is 250MB. After backup, if the free space available is less than 200MB, the backup would be deleted to make space for upgrade. On platforms where junos-vmhost images are installed, the minimum space required for backup of third party unbundled packages is 1200MB. After the backup, if the free space is less than 512MB, the backup would be deleted to free up space for upgrade.