server_group
Purpose:
The Virtuozzo group management interface.
Virtuozzo group is a collection of servers running Agent software, interconnected using internal Agent mechanisms for the purpose of providing integrated access to their resources. A Virtuozzo group consists of a Master Node and one or more Slave Nodes. The Master Node is a computer that the users interact with. It provides access to other computers in the group transparently to the user. The Master Node manages the entire group by allocating and controlling the available resources. The server_group
interface allows to set up and administer Virtuozzo groups.
Once a Virtuozzo group is set up, all of the servers in the group become one logical computing unit with a shared resource pool and a common management interface. The following is a list of typical management tasks performed in a Virtuozzo group:
- Retrieve a list of all Virtuozzo Containers from every server in a single call. Each Container has a globally unique ID assigned to it by Agent, so the list will always contain unique entries.
- Perform any of the usual management tasks on any of the Containers in the entire group. A client program connected to the Master Node can manage Virtuozzo Containers without even knowing their actual hosts. However, the Server ID of any host (Slave Node) can be easily obtained at any time if needed.
- Get a combined list of all of the OS and application templates available in the group. The templates can be copied from one node to another and deployed to multiple nodes.
- Get a combined list of all the sample configurations available in the group. The configurations can then be used to create Virtuozzo Containers on any node in the group.
- Get a combined list of the Virtuozzo Container backups available in the group. A backup can be restored to any node in the group.
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