Hewlett Packard Enterprise Development LP

Manan Gupta

Sudhanshu Rajvaidya

Ruta Vaidya

Tomasz Barszczak

Examples include group leader role queries. Examples include detection of a loss of communication, via a first communication protocol, between first and second computing devices, transmission, via a second communication protocol, of a query for information about the second computing device currently having the group leader role. Examples further include a determine not to assume the group leader role with the first computing device based on receiving a response to the query via the second communication protocol from the second computing device.

Group leader role queries

Examples include group heartbeat information in a Domain Name System (DNS) server text record. Examples include replacement of group heartbeat information, stored in a text record of a DNS server, with current group heartbeat information of a computing device indicating that the computing device has a group leader role for a group of computing devices.

Group heartbeat information in a domain name system server text record

A high-availability network device cluster role synchronization technique for devices configured with multiple network controllers is disclosed. An HA node may contain information regarding a role within a cluster for that HA node. This information should properly be maintained or erased based on a type of failover for an HA device. For example, if there is a loss of the active controller that causes only a controller failover, changes to the role of the HA node may not be necessary. Thus, an election process within a cluster may be avoided. However, if a failover of an entire HA node occurs (or restart of an HA node), role information prior to the restart may not be applicable and an election process may need to be initiated such that the cluster may continue to function. Different types of roles may exist for nodes within a cluster.

Role designation in a high availability node

A method, system, and non-transitory computer readable medium are disclosed to regarding remote procedure call (RPC) functionality from a requestor node to a processing node using a quorum state store communication protocol. Records from a quorum state store may be augmented to include an indication of both the processing node and the requestor node; remote procedure call (RPC) request information; and information including RPC coordination information. Heartbeat messages may propagate updated quorum state store records throughout the quorum. Requestor nodes and processing nodes may perform requested functions and supply status information via updates to their own quorum state store records. Quorum state store records may be propagated throughout the quorum even when direct communication between requestor nodes and processing nodes may not be available.

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San Jose, CA, United States of America

Manan Gupta