Deploying services on application server cloud with high availability

• US 9,672,123 B2
• Filed: 12/31/2014
• Issued: 06/06/2017
• Est. Priority Date: 12/31/2014
• Status: Active Grant

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Oracle International Corporation (Oracle Corporation)
• Inventors: Duggana, Satish, Jhunjhunwala, Amit, Misra, Srimant
• Primary Examiner(s): KO, CHAE M
• Application Number:
  US14/588,148
• Publication Number:
  US 20160188425A1
• Time in Patent Office: 888 Days
• Field of Search: 714 411, 714 63
• CPC Class Codes: G06F 11/2025 using centralised failover control functionality
• CPC Class Codes: G06F 11/203 using migration
• CPC Class Codes: G06F 2201/805 Real-time
• CPC Class Codes: H04L 41/0663 Performing the actions predefined by failover planning, e.g. switching to standby network elements
• CPC Class Codes: H04L 41/0668 by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
• CPC Class Codes: H04L 41/0836 to enhance reliability, e.g. reduce downtime
• CPC Class Codes: H04L 41/5006 Creating or negotiating SLA contracts, guarantees or penalties
• CPC Class Codes: H04L 41/5019 Ensuring fulfilment of SLA
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route

Abstract

Techniques are disclosed for deploying services in a server cluster environment. Certain techniques are disclosed for deploying services to a cluster based on a replication policy that includes a plurality of configurable parameters. In some embodiments, the configurable parameters (also referred to herein as replication factors) can define a number of nodes to which a service is to be deployed, a number of nodes to which a service is to be prepared, and/or a number of nodes to which a service is replicated. Based on the configurable parameters, the replication policy enables users and/or cluster providers to guarantee different levels of performance and/or reliability.

Claims

1. A method comprising:

receiving, by a computer system, a replication policy including a plurality of replication factors;

deploying a service to a first set of nodes in a server cluster based on a first replication factor;

preparing the service on a second set of nodes in the server cluster based on a second replication factor, wherein preparing the service on the second set of nodes comprises installing the service on each node in the second set of nodes and storing deployment data to configure the service on each node in the second set of nodes; and

replicating the service to a third set of nodes in the server cluster based on a third replication factor.

2. The method of claim 1 wherein the plurality of replication factors are configurable by a user.

3. The method according to claim 1, wherein the first replication factor, the second replication factor and the third replication factor are different replication factors from each other.

4. The method of claim 1 wherein replicating the service to a third set of nodes comprises installing the service on each node in the third set of nodes.

5. The method of claim 1, further comprising:

detecting, by the computer system, a node failure from the first set of nodes; and

in response to the node failure

sending an instruction to at least one node from the second set of nodes to start the service,

sending an instruction to at least one node from the third set of nodes to prepare the service, and

replicating the service to at least one node from a fourth set of nodes.

6. The method of claim 5 wherein the instruction to the third set of nodes includes deployment data to configure the service for the server cluster.

7. The method of claim 5 wherein the fourth set of nodes includes any nodes in the server cluster not included in the first set of nodes, second set of nodes, or third set of nodes.

8. A non-transitory computer readable storage medium including instructions stored thereon which, when executed by a processor, cause the processor to perform a method comprising:

receiving a replication policy including a plurality of replication factors;

deploying a service to a first set of nodes in a server cluster based on a first replication factor;

preparing the service on a second set of nodes in the server cluster based on a second replication factor, wherein preparing the service on the second set of nodes comprises installing the service on each node in the second set of nodes and storing deployment data to configure the service on each node in the second set of nodes; and

replicating the service to a third set of nodes in the server cluster based on a third replication factor.

9. The non-transitory computer readable storage medium of claim 8 wherein the plurality of replication factors are configurable by a user.

10. The non-transitory computer readable storage medium of claim 8 wherein replicating the service to a third set of nodes comprises installing the service on each node in the third set of nodes.

11. The non-transitory computer readable storage medium of claim 8, further comprising:

detecting, by the computer system, a node failure from the first set of nodes; and

in response to the node failure

sending an instruction to at least one node from the second set of nodes to start the service,

sending an instruction to at least one node from the third set of nodes to prepare the service, and

replicating the service to at least one node from a fourth set of nodes.

12. The non-transitory computer readable storage medium of claim 11 wherein the instruction to the third set of nodes includes deployment data to configure the service for the server cluster.

13. The non-transitory computer readable storage medium of claim 11 wherein the fourth set of nodes includes any nodes in the server cluster not included in the first set of nodes, second set of nodes, or third set of nodes.

14. A system comprising:

a server cluster, including an administration server and a plurality of managed nodes;

a replication manager, on the administration server, wherein the replication manager is configured to receive a replication policy including a plurality of replication factors; and

a cluster monitor, on the administration server, wherein the cluster monitor is configured to

deploy a service to a first set of nodes in a server cluster based on a first replication factor;

prepare the service on a second set of nodes in the server cluster based on a second replication factor, wherein preparing the service on the second set of nodes comprises installing the service on each node in the second set of nodes and storing deployment data to configure the service on each node in the second set of nodes; and

replicate the service to a third set of nodes in the server cluster based on a third replication factor.

15. The system of claim 14 wherein the plurality of replication factors are configurable by a user.

16. The system of claim 14 wherein replicating the service to a third set of nodes comprises installing the service on each node in the third set of nodes.

17. The system of claim 14, wherein the cluster monitor is further configured to:

detect a node failure from the first set of nodes; and

in response to the node failure

send an instruction to at least one node from the second set of nodes to start the service,

send an instruction to at least one node from the third set of nodes to prepare the service, and

replicate the service to at least one node from a fourth set of nodes.

18. The system of claim 17 wherein the instruction to the third set of nodes includes deployment data to configure the service for the server cluster, and wherein the fourth set of nodes includes any nodes in the server cluster not included in the first set of nodes, second set of nodes, or third set of nodes.