Abstract: Methods, apparatus, systems and articles of manufacture manage services in distributed systems are disclosed. An example apparatus includes at least one storage device, and at least one processor to execute instructions to at least perform an update of a first virtual machine in response to a determination that the first virtual machine is to enter a maintenance mode, the update based on storing a first service in a local service registry of the first virtual machine, in response to an unsuccessful update of the first virtual machine, restore the first virtual machine based on a snapshot, and provide the first service from a system service registry to a second virtual machine in response to a query from the second virtual machine for the first service.

Abstract: An example method of creating an autonomous cluster of hosts in a virtualized computing system includes: enabling, by a virtualization management server executing a cross cluster control plane (xCCP), an infravisor in a seed host of the hosts, the infravisor a component of a hypervisor executing on the seed host; running, by the infravisor, a cluster control plane (CCP) pod on the seed host executing a CCP; providing, by the infravisor, a CCP configuration to the CCP pod; applying, by an initialization script of the CCP pod, the CCP configuration to the CCP to create the autonomous cluster having the seed host as a single node thereof; and extending the autonomous cluster with remaining hosts of the hosts other than the seed host as additional nodes thereof, the CCP applying a cluster personality to each of the remaining hosts derived from the seed host.

Abstract: An example method of establishing trust between a cross-cluster control plane (xCCP) and a cluster control plane (CCP) of an autonomous cluster of hosts in a virtualized computing system includes: providing, by the xCCP, trust data of the xCCP to a hypervisor of a host in the autonomous cluster that is executing the CCP; providing, by the hypervisor, the trust data to the CCP through a volume attached to a virtual machine (VM) that executes the CCP; persisting, by the CCP, the trust data in a database; and accessing, by a security token service (STS) of the CCP, the trust data in the database to authenticate access to the CCP by the xCCP.

Abstract: An example method of fault-handling for an autonomous cluster of hosts in a virtualized computing system includes: detecting, by a second plurality of infravisors in a second plurality of the hosts, lack of network connectivity with a first cluster control plane (CCP) executing on a first host in a first plurality of the hosts; electing, among the second plurality of infravisors, a second primary infravisor, a first primary infravisor executing on the first host; running, by the second primary infravisor, a second CCP on a second host in the second plurality of hosts; providing, by the second primary infravisor, a CCP configuration to the second CCP; and applying, by an initialization script of the second CCP, the CCP configuration to the second CCP to create a second autonomous cluster having the second plurality of hosts, the first CCP managing a first autonomous cluster having the first plurality of hosts.

Abstract: Described herein are systems, methods, and software to manage the downtime associated with updates and configuration modification to the database. In one implementation, a migration service initiates a migration of data from a first database to a second database. The migration service further identifies, in a transaction log, modifications to the data in the first database after initiating the migration of the data and, for each modification, applies one or more transformation rules to the modification to make a compliant modification and updates the second database with the compliant modification. Once the migration is complete and no more modifications exist in the transaction log, the migration service may transition from using the first database as an active database to using the second database as the active database.

Abstract: Described herein are systems, methods, and software to manage the downtime associated with updates and configuration modification to the database. In one implementation, a migration service initiates a migration of data from a first database to a second database. The migration service further identifies, in a transaction log, modifications to the data in the first database after initiating the migration of the data and, for each modification, applies one or more transformation rules to the modification to make a compliant modification and updates the second database with the compliant modification. Once the migration is complete and no more modifications exist in the transaction log, the migration service may transition from using the first database as an active database to using the second database as the active database.

Abstract: Methods, apparatus, systems and articles of manufacture manage services in distributed systems are disclosed. An example apparatus includes at least one storage device, and at least one processor to execute instructions to at least perform an update of a first virtual machine in response to a determination that the first virtual machine is to enter a maintenance mode, the update based on storing a first service in a local service registry of the first virtual machine, in response to an unsuccessful update of the first virtual machine, restore the first virtual machine based on a snapshot, and provide the first service from a system service registry to a second virtual machine in response to a query from the second virtual machine for the first service.

Abstract: Methods, apparatus, systems and articles of manufacture manage services in distributed systems are disclosed. An example distributed system includes a first virtual machine including a first storage device to store a first service registry for a plurality of virtual machines, and a second virtual machine, of the plurality of virtual machines, including a second storage device to store a second service registry for the second virtual machine, and a proxy service registrar having an interface to selectively provide a first service from the first service registry or the second service registry responsive to a query of the second virtual machine for the first service.

Abstract: Methods, apparatus, systems and articles of manufacture manage services in distributed systems are disclosed. An example distributed system includes a first virtual machine including a first storage device to store a first service registry for a plurality of virtual machines, and a second virtual machine, of the plurality of virtual machines, including a second storage device to store a second service registry for the second virtual machine, and a proxy service registrar having an interface to selectively provide a first service from the first service registry or the second service registry responsive to a query of the second virtual machine for the first service.