Netapp, Inc.

Christopher Alan Busick

Rajesh Rajaraman

Praveen Kumar Hasti

James Silva

Mohinish Vinnakota

Stephen Winslow Schmitt

Christopher Cason

Avesh Kumar Agarwal

Brendan Kerr

Kyle Gene Knutson

Techniques are provided for upgrading an external distributed storage layer that provides storage services to containerized applications hosted within a container hosting platform. An operator within the container hosting platform is custom configured to orchestrate, from within the container hosting platform, the upgrade for the external distributed storage layer. Because the external distributed storage layer and the container hosting platform are separate computing environment that utilize different namespaces, semantics, operating states, and/or application programming interfaces, a cluster controller within the container hosting platform is custom configured to reformat/translate commands between the external distributed storage layer and the container hosting platform for performing the upgrade. Because the external distributed storage layer upgrade may be part of an overall upgrade that upgrades the containerized applications hosted within the container hosting platform, the operator and cluster controller provide a single upgrade orchestration point for perform both upgrades in an orchestrated manner.

External distributed storage layer upgrade

Techniques are provided for implementing a distributed control plane to facilitate communication between a container orchestration platform and a distributed storage architecture. The distributed storage architecture hosts worker nodes that manage distributed storage that can be made accessible to applications within the container orchestration platform through the distributed control plane. The distributed control plane includes control plane controllers that are each paired with a single worker node of the distributed storage architecture. Thus, the distributed control plane is configured to selectively route commands to control plane controllers that are paired with worker nodes that are current owners of objects targeted by the commands. In this way, the control plane controllers can facilitate communication and performance of commands between the applications of the container orchestration platform and the worker nodes of the distributed storage architecture.

Distributed control plane for facilitating communication between a container orchestration platform and a distributed storage architecture

Techniques are provided for implementing a distributed control plane to facilitate communication between a container orchestration platform and a distributed storage architecture. The distributed storage architecture hosts worker nodes that manage distributed storage that can be made accessible to applications within the container orchestration platform through the distributed control plane. The distributed control plane includes control plane controllers that are each paired with a single worker node of the distributed storage architecture. The distributed control plane is configured to selectively route commands to control plane controllers that are paired with worker nodes that are current owners of objects targeted by the commands. If a worker node fails and ownership of an object has changed from the failed worker node to another worker node, then subsequent commands are re-routed to a control plane controller paired with the other worker node now owning the object in place of the failed worker node.

Distributed control plane for handling worker node failures of a distributed storage architecture

Techniques are provided for a high availability solution (e.g., a network attached storage (NAS) solution) with address preservation during switchover. A first virtual machine is deployed into a first domain and a second virtual machine is deployed into a second domain of a computing environment. The first and second virtual machines are configured as a node pair for providing clients with access to data stored within an aggregate comprising one or more storage structures within shared storage of the computing environment. A load balancer is utilized to manage logical interfaces used by clients to access the virtual machines. During switchover, the load balancer preserves an IP address used to mount and access a data share of the aggregate used by a client.

Shared storage model for high availability within cloud environments

Techniques are provided for lock reservations for shared storage. A reserve command to reserve a storage structure is received by a driver from a node. The reserve command is formatted according to a storage protocol. The driver translates the reserve command into a lease acquire command formatted according to an object store protocol and targeting an object stored within an object store and corresponding to the storage structure. A lease identifier derived from a node identifier of the node is inserted into the lease acquire command. The lease acquire command is routed to the object store for obtaining a lease on the object for granting the node exclusive write access to the object.

Lock reservations for shared storage

Techniques are provided for implementing a distributed control plane to facilitate communication between a container orchestration platform and a distributed storage architecture. The distributed storage architecture hosts worker nodes that manage distributed storage that can be made accessible to applications within the container orchestration platform through the distributed control plane. The distributed control plane includes control plane controllers that are each paired with a single worker node of the distributed storage architecture. The distributed control plane is configured to selectively route commands to control plane controllers that are paired with worker nodes that are current owners of objects targeted by the commands. If ownership of an object has changed from one worker node to another worker node, then subsequent commands will be re-routed to a control plane controller paired with the other worker node now owning the object.

Distributed control plane tracking object ownership changes within a distributed storage architecture

Techniques are provided for load balancing for IP failover. A backend address of a first node is identified as a routing destination to which a request is to be routed by a load balancer based upon a load balancer rule mapping a frontend address, specified by the request as a request destination, to the backend address of the first node. The request is routed to a primary network interface of the first node using the backend address. The first node has a loopback interface with an address matching the frontend address for routing the request to a destination data structure based upon the request maintaining the frontend address as the request destination. Health probes are used by the load balancer for detecting a failure of the first node in order to failover to routing requests to a second backend address of a second node.

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Littleton, MA, United States of America

Christopher Alan Busick