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Chapter 17. Working with System Virtual Machines
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17.4.2. Upgrading a Virtual Router with System Service Offerings
When CloudPlatform creates a virtual router, it uses default settings which are defined in a default
system service offering. See Section 9.2, “System Service Offerings”. All the virtual routers in a single
guest network use the same system service offering. You can upgrade the capabilities of the virtual
router by creating and applying a custom system service offering.
1. Define your custom system service offering. See Section 9.2.1, “Creating a New System Service
Offering”. In System VM Type, choose Domain Router.
2. Associate the system service offering with a network offering. See Section 10.5.1, “Creating a
New Network Offering”
3. 3. Apply the network offering to the network where you want the virtual routers to use the new
system service offering. If this is a new network, follow the steps in Adding an Additional Guest
Network on page 66. To change the service offering for existing virtual routers, follow the steps in
Section 10.5.2, “Changing the Network Offering on a Guest Network”.
17.4.3. Best Practices for Virtual Routers
• WARNING: Restarting a virtual router from a hypervisor console deletes all the iptables rules. To
work around this issue, stop the virtual router and start it from the CloudPlatform UI.
• WARNING: Do not use the destroyRouter API when only one router is available in the network,
because restartNetwork API with the cleanup=false parameter can't recreate it later. If you want to
destroy and recreate the single router available in the network, use the restartNetwork API with the
cleanup=true parameter.
17.5. Secondary Storage VM
In addition to the hosts, CloudPlatform’s Secondary Storage VM mounts and writes to secondary
storage.
Submissions to secondary storage go through the Secondary Storage VM. The Secondary Storage
VM can retrieve templates and ISO images from URLs using a variety of protocols.
The secondary storage VM takes care of a variety of secondary storage activities: downloading a new
template to a Zone, copying templates between Zones, and snapshot backups.
The administrator can log in to the secondary storage VM if needed.