Transparent high availability for customer virtual machines achieved using a hypervisor-based side channel bonding and monitoring

A non-transitory computer-readable storage medium storing a plurality of instructions executable by one or more processors, the plurality of instructions when executed by the one or more processors cause the one or more processors to:

• create a network path bond between at least one compute instance and a plurality of Network Virtualization Devices (“NVD”), each of the plurality of NVDs comprising a Virtualized Network Interface Card (“VNIC”) having an overlay IP address corresponding to an IP address of the compute instance, the network path bond comprising a plurality of network paths, wherein each of the plurality of network paths connects the compute instance with the Virtualized Network Interface Card (“VNIC”) of one of the plurality of NVDs, wherein each of the plurality of NVDs is a separate hardware device configured with a corresponding physical IP address, and wherein each of the VNICs in the network path bond and that is associated with the compute instance shares the same overlay IP address such that the same overlay address is applied to physical address of each of the NVDs of each VNIC associated with the compute instance;
• identify a first one of the network paths as an active network path and a second one of the network paths as an inactive network path, wherein identifying the first one of the network paths as the active network path comprises mapping in a virtual network control plane the overlay IP address of the VNIC of the first one of the network paths onto the NVD of the first one of the network paths;
• perform a health check on the active network path;
• determine that the active network path failed the health check;
• mark the first one of the network paths as failed subsequent to determining that the active network path failed the health check;
• and
• identify the second one of the network paths as the active network path.

A system comprising:

• a plurality of Network Virtualization Devices (“NVD”);
• and
• a processor configured to:
• create a network path bond between at least one compute instance and a plurality of Network Virtualization Devices (“NVD”), each of the plurality of NVDs comprising a Virtualized Network Interface Card (“VNIC”) having an overlay IP address corresponding to an IP address of the compute instance, the network path bond comprising a plurality of network paths, wherein each of the plurality of network paths connects the compute instance with the Virtualized Network Interface Card (“VNIC”) of one of the plurality of NVDs, wherein each of the plurality of NVDs is a separate hardware device configured with a corresponding physical IP address, and wherein each of the VNICs in the network path bond and that is associated with the compute instance shares the same overlay IP address such that the same overlay address is applied to physical address of each of the NVDs of each VNIC associated with the compute instance;
• identify a first one of the network paths as an active network path and a second one of the network paths as an inactive network path, wherein identifying the first one of the network paths as the active network path comprises mapping in a virtual network control plane the overlay IP address of the VNIC of the first one of the network paths onto the NVD of the first one of the network paths;
• perform a health check on the active network path;
• determine that the active network path failed the health check;
• mark the first one of the network paths as failed subsequent to determining that the active network path failed the health check;
• and
• identify the second one of the network paths as the active network path.