System for clustering software applications
First Claim
1. A system of loading and registering a software program in a cluster network database, coupled to a first server and a second server in a server network, comprising:
- a primary load module which loads the program in the first server;
a preregistration module which determines if the program was previously registered;
an object module which creates an object for the program and stores the object in the database, if it is determined that the program was not previously registered;
a nonfailure module which determines if a system operator previously unloaded the program;
a phoenix detect module which determines if the first server is coming back from a failback process, if it is determined that the system operator did not previously unload the program; and
a synchronization module which synchronizes all replicated databases within the network, if it is determined that the first server is not coming back from failback process.
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Accused Products
Abstract
A system for fault tolerant execution of an application program in a server network, which includes: a first server for executing the application program; a cluster network database, coupled to the first server; an object, stored in the cluster network database, which represents the program and contains information pertaining to the program; a failure detection module which detects a failure of the first server; a second server, coupled to the cluster network database; and a failover module which loads the application program in the second server upon detection of the failure of the first server. The information contained within the object includes: a host server attribute which identifies which server is currently executing the program; a primary server attribute which identifies which server is primarily responsible for executing the program; and a backup server attribute which identifies which server is a backup server for executing the program if the primary server experiences a failure.
387 Citations
13 Claims
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1. A system of loading and registering a software program in a cluster network database, coupled to a first server and a second server in a server network, comprising:
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a primary load module which loads the program in the first server;
a preregistration module which determines if the program was previously registered;
an object module which creates an object for the program and stores the object in the database, if it is determined that the program was not previously registered;
a nonfailure module which determines if a system operator previously unloaded the program;
a phoenix detect module which determines if the first server is coming back from a failback process, if it is determined that the system operator did not previously unload the program; and
a synchronization module which synchronizes all replicated databases within the network, if it is determined that the first server is not coming back from failback process. - View Dependent Claims (2, 3, 4)
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5. A system of loading and registering a software program in a cluster network database, coupled to a first server and a second server in a server network, comprising:
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a primary load module which loads the program in the first server;
a preregistration module which determines if the program was previously registered;
an object module which creates an object for the program and stores the object in the database, if it is determined that the program was not previously registered;
a phoenix detect module which determines if the first server is coming back from a failback process; and
a synchronization module which synchronizes all replicated databases within the network, if it is determined that the first server is not coming back from failback process. - View Dependent Claims (6, 7)
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8. A method of providing fault tolerant execution of an application program in a server network having a first and second server, comprising:
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executing the application program in the first server;
detecting a failure of the first server; and
executing the application program in the second server upon detection of the failure of the first server;
detecting a correction of the failure of the first server;
unloading the application program from the second server; and
re-executing the application program in the first server. - View Dependent Claims (9, 10)
monitoring communications between the first server and a network resource; and
detecting a termination in the communication between the first server and the network resource.
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10. The method of claim 9, wherein detecting a failure comprises:
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successively transmitting first and second command signals from the first server to a device coupled to the first server, wherein the first command signal places the device in a first status condition and the second command signal places the device in a second status condition; and
monitoring a status condition of the device with the second server, coupled to the device, wherein a change in the status condition of the device indicates that the first server is operational and a constant status condition indicates the failure of the first server.
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11. A system for providing fault tolerant execution of an application program in a server network having a first and second server, comprising:
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means for executing the application program in the first server;
means for detecting a failure of the first server; and
means for executing the application program in the second server upon detection of the failure of the first server;
means for detecting a correction of the failure of the first server;
means for unloading the application program from the second server; and
means for re-executing the application program in the first server. - View Dependent Claims (12, 13)
means for monitoring communications between the first server and a network resource; and
means for detecting a termination in the communication between the first server and the network resource.
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13. The system of claim 11, wherein detecting a failure comprises:
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means for successively transmitting first and second command signals from the first server to a device coupled to the first server, wherein the first command signal places the device in a first status condition and the second command signal places the device in a second status condition; and
means for monitoring a status condition of the device with the second server, coupled to the device, wherein a change in the status condition of the device indicates that the first server is operational and a constant status condition indicates the failure of the first server.
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Specification