Systems and methods for providing monitoring in a cluster system

• US 9,577,892 B2
• Filed: 04/03/2014
• Issued: 02/21/2017
• Est. Priority Date: 04/06/2013
• Status: Active Grant

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Inventors: Chaudhary, Aman, Muthiah, Manikam
• Primary Examiner(s): Hussain, Tauqir
• Application Number:
  US14/244,329
• Publication Number:
  US 20140304399A1
• Time in Patent Office: 1,055 Days
• Field of Search: 709/224
• US Class Current: 1/1
• CPC Class Codes: G06F 11/3006 where the computing system is distributed, e.g. networked systems, clusters, multiprocessor systems multiprogramming arrangements G06F9/46; allocation of resources G06F9/50
• CPC Class Codes: G06F 11/3048 where the topology of the computing system or computing system component explicitly influences the monitoring activity, e.g. serial, hierarchical systems
• CPC Class Codes: G06F 11/3093 Configuration details thereof, e.g. installation, enabling, spatial arrangement of the probes
• CPC Class Codes: G06F 2201/815 Virtual middleware or OS functionality using virtual machines to implement generic software techniques for error detection or fault masking G06F11/1484
• CPC Class Codes: H04L 41/5009 Determining service level performance parameters or violations of service level contracts, e.g. violations of agreed response time or mean time between failures [MTBF]
• CPC Class Codes: H04L 63/20 for managing network security; network security policies in general filtering policies H04L63/0227

Abstract

The present application is directed towards systems and methods for providing monitoring in a cluster system. The systems and methods distribute the monitors for a service and the ownership of a service across a cluster system comprising a plurality of nodes. The nodes in the cluster can be configured to have different sets of virtual servers (sometimes referred to as “vservers”) and services. The ownership and monitoring of the services can be distributed among all the nodes in the cluster. The system can identify a service in a cluster system and identify a master node that has ownership of the service. The master node can transmit a service status update to other nodes in the cluster system.

Claims

1. A method comprising:

determining, by each node in a cluster of nodes intermediary to a plurality of clients and one or more servers and configured to monitor a plurality of services executing on the one or more servers, a service of the plurality of services to be monitored by each node for the cluster based on a hash of an identity of the service in a configuration for the cluster;

establishing, by each node responsive to the determination, a monitor for each service to be monitored by that node for the cluster;

identifying, by a first monitor on a first node in the cluster of the nodes, a status of a service being monitored by the cluster; and

transmitting, by the first monitor on the first node to each other node in the cluster, a message comprising the status of the service monitored by the first monitor,

wherein an acknowledgement message is transmitted to each other node in the cluster for each other node to acknowledge receipt of an update to the status of the service; and

wherein a master monitor is configured to compare a unique identity in the message to a service identity to confirm that the first monitor is a current monitor for the service.

2. The method of claim 1, further comprising establishing, by each node in the cluster, a master monitor among a plurality of monitors established on the corresponding node.

3. The method of claim 2, further comprising updating, by the master monitor, the other monitors of the node with the status of the service.

4. The method of claim 1, further comprising identifying, by each node, ownership of a service to monitor in the cluster based on the hash of the identity of the service comprising a name of the service configured in the configuration for the cluster.

5. The method of claim 4, further comprising redistributing ownership of services in the cluster in response to a configuration event in the cluster that changes a topology of the cluster.

6. The method of claim 1, further comprising generating, by the monitor, a service state update for the service in response to a configuration event in the cluster.

7. The method of claim 6, further comprising re-transmitting, by the monitor, the acknowledgement message to each other node in the cluster until each other node acknowledges receipt of the service state update.

8. The method of claim 7, further comprising comparing, by the master monitor, the service identity in a server database to the unique identity in the service state update of the message to confirm the monitor is the current monitor for the service.

9. The method of claim 1, further comprising enabling, by the monitor, a path monitoring option for the service, the path monitoring option enabling each node in the cluster to probe the service to determine a service reachability from each node in the cluster to the service.

10. The method of claim 9, further comprising transmitting, by each node in the cluster, a path monitoring state update to the monitor for the service, the path monitoring state update comprising the service reachability for each node in the cluster to the service.

11. A system comprising:

a cluster of nodes intermediary to a plurality of clients and one or more servers, the cluster of nodes configured to monitor a plurality of services executing on the one or more servers;

each node in the cluster configured to determine a service of the plurality of services to be monitored by each node for the cluster based on a hash of an identity of the service in a configuration for the cluster and establish, responsive to the determination, a monitor for each service to be monitored by that node for the cluster

a first monitor configured on a first node configured to;

determine a status of the service being monitored by the cluster; and

transmit to each other node in the cluster, a message comprising the status of the service monitored by the first monitor;

wherein an acknowledgement message is transmitted to each other node in the cluster for each other node to acknowledge receipt of an update to the status of service; and

wherein a master monitor is configured to compare a unique identity in the message to a service identity to confirm that the first monitor is a current monitor for the service.

12. The system of claim 11, wherein each node is configured to establish a master monitor among a plurality of monitors established on the corresponding node.

13. The system of claim 12, wherein the master monitor is configured to update the other monitors of the node with the status of the service.

14. The system of claim 11, wherein each node is configured to identify ownership of a service to monitor in the cluster based on the hash value of the identity of the service comprising a name of the service configured in the configuration for the cluster.

15. The system of claim 14, wherein each node is configured to redistribute ownership of services in the cluster in response to a configuration event in the cluster that changes a topology of the cluster.

16. The system of claim 11, wherein the monitor is configured to generate a service state update for the service in response to a configuration event in the cluster.

17. The system of claim 16, wherein the monitor is configured to transmit the acknowledgement message to each other node in the cluster until each other node acknowledges receipt of the service state update of the message.

18. The system of claim 17, wherein the master monitor is configured to compare the service identity in a server database to the unique identity in the service state update of the message to confirm that the monitor is the current monitor for the service.

19. The system of claim 11, wherein the monitor is configured to enable a path monitoring option for the service, the path monitoring option enabling each node in the cluster to probe the service to determine a service reachability from each node in the cluster to the service.

20. The system of claim 19, wherein each node in the cluster is configured to transmit a path monitoring state update to the monitor for the service, the path monitoring state update comprising the service reachability for each node in the cluster to the service.