Handling of virtual machine migration while performing clustering operations
Various systems and methods for performing clustering operations in distributed systems are disclosed. For example, one method involves performing a clustering operation that uses a virtual machine (VM). This VM is hosted by a first node. The method involves receiving an indication that indicates a migration of the virtual machine from the first node to a second node. The method also involves, in response to a receipt of this indication, suspending performance of the clustering operation using the virtual machine. The method can also involve resuming performance of the clustering operation using the virtual machine in response to receiving an indication of a successful migration of this virtual machine.
1. A method comprising:
performing, using one or more processors, a clustering operation, wherein
the clustering operation is initiated by clustering software,
the clustering operation uses a first virtual machine, and
the first virtual machine is hosted by a first node;
receiving an indication, wherein
the indication indicates a migration of the first virtual machine from the first node to a second node, wherein
the migration is not under control of the clustering software; and
in response to a receipt of the indication, suspending performance of the clustering operation using the first virtual machine, wherein
the suspending performance is initiated by the clustering software.
2. The method of claim 1 , wherein
the clustering operation uses a plurality of virtual machines,
the plurality of virtual machines comprises the first virtual machine,
after the suspending, the clustering operation uses remaining virtual machines of the plurality of virtual machines, and
the remaining virtual machines do not comprise the first virtual machine.
3. The method of claim 1 , wherein
the clustering operation uses a plurality of virtual machines,
the plurality of virtual machines comprises the first virtual machine, and
the clustering operation comprises a high-availability operation.
4. The method of claim 1 ,
wherein the migration comprises live migration.
5. The method of claim 1 , further comprising
receiving another indication, wherein
the another indication indicates a successful migration of the first virtual machine from the first node to the second node, and
the another indication is received after receiving the indication, and
in response to the receiving the another indication, resuming performance of the clustering operation using the first virtual machine.
6. The method of claim 5 , further comprising
after the receiving the another indication, determining if the second node detected the first virtual machine being hosted by the second node, and
in response to a determination that the second node has not detected the first virtual machine being hosted by the second node, initiating status checking of the second node, wherein
the status checking is configured to detect one or more virtual machines that are being hosted by the second node.
7. The method of claim 1 , further comprising
receiving another indication, wherein
the another indication indicates an unsuccessful migration of the first virtual machine from the first node to the second node, and
the another indication is received after receiving the indication, and
in response to receiving the another indication, performing one or more corrective actions with respect to the first virtual machine.
8. The method of claim 7 , further comprising
determining whether the one or more corrective actions are completed, and
in response to a determination that the one or more corrective actions are completed, resuming performance of the clustering operation using the first virtual machine.
9. The method of claim 1 , further comprising registering with the clustering software, wherein
in response to the registering, the clustering software is configured to issue one or more indications, and
the one or more indications comprise the indication.
10. The method of claim 9 , wherein
the one or more indications comprise one or more of
a virtual machine migration start indication,
a virtual machine migration stop indication,
a virtual machine migration success indication, or
a virtual machine migration failure indication.
11. A system, comprising:
one or more processors;
a first agent, wherein
a first node comprises the first agent,
the first node hosts a first virtual machine, and
the first virtual machine is configured to be migrated from the first node to a second node; and
a clustering software, wherein
the clustering software is configured to
perform a clustering operation using the first virtual machine,
receive an indication, wherein
the indication indicates a migration of the first virtual machine from the first node to a second node, and
the migration is not under control of the clustering software, and
in response to receiving the indication, suspend performance of the clustering operation using the first virtual machine, wherein the suspending performance is initiated by the clustering software; and
the clustering software is configured to be executed using the one or more processors.
12. The system of claim 11 , further comprising
a second agent, wherein
the second node comprises the second agent, and
the second agent is configured to send the indication.
13. The system of claim 11 , wherein the clustering software is further configured to
after receiving another indication, determine if the second node detected the first virtual machine being hosted by the second node,
in response to a determination that the second node has not detected the first virtual machine being hosted by the second node, initiate status checking of the second node, wherein
the status checking is configured to detect one or more virtual machines that are being hosted by the second node.
14. The system of claim 11 , wherein
the first agent is configured to send the indication.
15. The system of claim 11 , wherein
the clustering operation uses a plurality of virtual machines,
the plurality of virtual machines comprises the first virtual machine,
after the suspending, the clustering operation uses remaining virtual machines of the plurality of virtual machines, and
the remaining virtual machines do not comprise the first virtual machine.
16. The system of claim 11 , wherein the clustering software is further configured to
receive another indication, wherein
the another indication indicates a successful migration of the first virtual machine from the first node to the second node, and
the another indication is received after receiving the indication, and
in response to a receipt of the another indication, resume performance of the clustering operation using the first virtual machine.
17. The system of claim 11 , wherein the clustering software is further configured to
receive another indication, wherein
the another indication indicates an unsuccessful migration of the first virtual machine from the first node to the second node,
the another indication is received after receiving the indication, and
in response to a receipt of the another indication, perform one or more corrective actions with respect to the first virtual machine.
18. A computer program product comprising:
a plurality of instructions, comprising
a first set of instructions, executable on a computer system, configured to perform a clustering operation, wherein
the clustering operation is initiated by clustering software,
the clustering operation uses a first virtual machine, and
the first virtual machine is hosted by a first node,
a second set of instructions, executable on the computer system, configured to receive an indication, wherein
the indication indicates a migration of the first virtual machine from the first node to a second node, wherein
the migration is not under control of the clustering software, and
a third set of instructions, executable on the computer system, configured to, in response to a receipt of the indication, suspend performance of the clustering operation using the first virtual machine, wherein the suspending performance is initiated by the clustering software; and
a non-transitory computer-readable storage medium, wherein the instructions are encoded in the non-transitory computer-readable storage medium.
19. The computer program product of claim 18 , wherein
the clustering operation uses a plurality of virtual machines,
the plurality of virtual machines comprises the first virtual machine,
after the suspending, the clustering operation uses remaining virtual machines of the plurality of virtual machines, and
the remaining virtual machines do not comprise the first virtual machine.
20. The computer program product of claim 18 , wherein the instructions further comprise:
a fourth set of instructions, executable on the computer system, configured to receive another indication, wherein
the another indication indicates a successful migration of the first virtual machine from the first node to the second node, and
the another indication is received after receiving the indication, and
a fifth set of instructions, executable on the computer system, configured to, in response to receiving the another indication, resume performance of the clustering operation using the first virtual machine.