Vmware, Inc.

Dimitar Dimitrov

Ivaylo Radoslavov Radev

Akash Kodenkiri

Ammar Rizvi

Ramesh Vepuri Lakshminarayana

Tomo Vladimirov Simeonov

Ivailo Vladimirov Loboshki

Vladislav Milenov Atanasov

Grigor Harbaliev

Anmol Parikh

Chandrika Mutalik

Vladimir Ivanov

Andrey Karabelyov

Roman Romanov Petrov

George Daskalov

Denis Denislavov Belinov

A method of upgrading an application in a software-defined data center (SDDC) includes: deploying, by lifecycle management software executing in the SDDC, a second appliance, a first appliance executing services of the application at a first version, the second appliance having services of the application at a second version, the services in the first appliance being active and the services in the second appliance being inactive; expanding, by the lifecycle management software, state of the first appliance to support both the services at the first version and the services at the second version; replicating, by the lifecycle management software, the state of the first appliance to the second appliance; performing, by the lifecycle management software, a switchover to stop the services of the first appliance and start the services of the second appliance; and contracting, by the lifecycle management software, state of the second appliance to remove a portion unused by the services at the second version.

Reduced downtime during upgrade of an application hosted in a data center

Distributed tracing is applied during an upgrade from a first management appliance to a second management appliance. The distributed tracing method includes generating a parent span that encapsulates states of the overall workflow, including a span context that contains a trace identifier and a span identifier, and generating a plurality of child spans. Each child span encapsulates states that represent a piece of the workflow and contains a reference to the parent span context. The states of the child spans include an error tag that indicates whether the piece of the workflow associated with the child span executed with an error. Because child spans may be generated for a piece of the workflow that is executed by a service running in the first or second management appliance, the span context for the parent span is persisted by the first management appliance and replicated for use by the second management appliance.

Real-time cross appliance operational intelligence during management appliance upgrade

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.

Limiting downtime associated with migrations of databases

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Sofia, Bulgaria

Dimitar Dimitrov