System and method for non-disruptive management of servers in a network environment

摘要

An example method includes disengaging a target node from a cluster, where the disengaging comprises: selecting an inheritor; migrating flows from the target node to the inheritor; informing a migration manager that the target node is disengaged from the cluster; and broadcasting to peer nodes of the target node that the target node is replaced by the inheritor. In particular implementations of the present disclosure, the cluster can include a first layer of a network topology including a forwarding engine that implements hash-based packet forwarding; a second layer of the network topology comprising the target node and the inheritor, where the target node and the inheritor implement flow-based packet forwarding; and a third layer including service nodes configured for packet processing in a network.

主权项

1. A method comprising:
disengaging a target node from a cluster comprising a first layer of a network topology that implements hash-based packet forwarding, and a second layer of the network topology that implements flow-based packet forwarding, wherein the disengaging comprises:
selecting an inheritor;duplicating a flow table from the target node to the inheritor, wherein the flow table comprises a set of entries including flow keys identifying flows and corresponding actions to be performed on packets matching the flow keys;migrating flows from the target node to the inheritor;informing a migration manager that the target node is disengaged from the cluster; andbroadcasting to peer nodes of the target node that the target node is replaced by the inheritor.