Service coordination for a data center

摘要

According to an example, a service coordination apparatus may include a processor that is to determine whether each GLB node-pair in a node-pair state table is at a normal state after receiving a DNS request. If a GLB node-pair in the node-pair state table is not at the normal state, a second DNS response may be sent to a node sending the DNS request according to a DNS parsing list. If each GLB node-pair in the node-pair state table is at the normal state, a proximity list may be inquired. If a record corresponding to the DNS request is searched out from the proximity list, a first DNS response may be sent to the node sending the DNS request according to the searched out record. If not, a second DNS response may be sent to the node sending the DNS request according to the DNS parsing list.

主权项

1. A service coordination apparatus for a data center, said apparatus comprising:
a processor; and a storage that is to store a node-pair state table, a domain name system (DNS) parsing list, and a proximity list; wherein the processor is to:
determine whether each global load balancing (GLB) node-pair in the node-pair state table is at a normal state after receiving a DNS request;in response to at least one GLB node-pair in the node-pair state table not being at the normal state, send a second DNS response to a node that sent the DNS request according to the DNS parsing list;in response to each GLB node-pair in the node-pair state table being at the normal state, inquire the proximity list;in response to a record corresponding to the DNS request being searched out from the proximity list, send a first DNS response to the node that sent the DNS request according to the searched out record; andin response to no record corresponding to the DNS request being searched out from the proximity list, send a second DNS response to the node that sent the DNS request according to the DNS parsing list.