Abstract: A method for managing alarms in a virtual machine environment includes receiving alarm data related to a process and storing the alarm data in a database, where the alarm data comprises one or more features. The method further includes retrieving intended state information for the process and comparing the one more features of the alarm data to the intended state information to determine whether the alarm is an outlier. The method also includes computing a normal score for the alarm if the alarm is not an outlier, and computing an abnormal score for the alarm if the alarm is an outlier. The method also includes sending a notification for the alarm and the computed score.

Abstract: Some embodiments provide a novel method for deploying different virtual networks over several public cloud datacenters for different entities. For each entity, the method (1) identifies a set of public cloud datacenters of one or more public cloud providers to connect a set of machines of the entity, (2) deploys managed forwarding nodes (MFNs) for the entity in the identified set of public cloud datacenters, and then (3) configures the MFNs to implement a virtual network that connects the entity's set of machines across its identified set of public cloud datacenters. In some embodiments, the method identifies the set of public cloud datacenters for an entity by receiving input from the entity's network administrator. In some embodiments, this input specifies the public cloud providers to use and/or the public cloud regions in which the virtual network should be defined. Conjunctively, or alternatively, this input in some embodiments specifies actual public cloud datacenters to use.

Abstract: Techniques for generating a stream processing pipeline are provided. In one embodiment, a method includes generating a plurality of pipeline stages of a stream processing pipeline in accordance with a configuration file. The plurality of pipeline stages includes a first processing stage designated for a first data service and a second processing stage designated for a second data service and operating in parallel to the first processing stage.

Abstract: Some embodiments provide novel methods for performing services for machines operating in one or more datacenters. For instance, for a group of related guest machines (e.g., a group of tenant machines), some embodiments define two different forwarding planes: (1) a guest forwarding plane and (2) a service forwarding plane. The guest forwarding plane connects to the machines in the group and performs L2 and/or L3 forwarding for these machines. The service forwarding plane (1) connects to the service nodes that perform services on data messages sent to and from these machines, and (2) forwards these data messages to the service nodes. In some embodiments, the guest machines do not connect directly with the service forwarding plane. For instance, in some embodiments, each forwarding plane connects to a machine or service node through a port that receives data messages from, or supplies data messages to, the machine or service node.

Abstract: A designated storage system receives a request to store data in the local storage as a backup copy. The designated storage system requests a file system in the computer system to store the backup copy as a file in the local storage and maintains a record describing storage locations for each of the one or more sets of contiguous available file system data blocks. The storage system may transmit the record to a management computer configured to track which of the computer systems has stored the backup copy. The storage system then requests the file system to delete the file, whereupon the file system removes the file descriptor and frees the one or more file system data blocks in order to satisfy the deletion request but does not delete the data stored in the one or more file system data blocks.

Abstract: A method for deploying different virtual networks over several public cloud datacenters for different entities. For each entity, the method (1) identifies a set of public cloud datacenters of one or more public cloud providers to connect a set of machines of the entity, (2) deploys managed forwarding nodes (MFNs) for the entity in the identified set of public cloud datacenters, and then (3) configures the MFNs to implement a virtual network that connects the entity's set of machines across its identified set of public cloud datacenters. In some embodiments, the method identifies the set of public cloud datacenters for an entity by receiving input from the entity's network administrator. In some embodiments, this input specifies the public cloud providers to use and/or the public cloud regions in which the virtual network should be defined. Conjunctively, or alternatively, this input in some embodiments specifies actual public cloud datacenters to use.

Abstract: A system comprising nodes configured to form a network including virtual links in an overlay network provisioned over an underlay network. The system includes tenant networks formed in the network, and each tenant network corresponds to a tenant of the network. The system includes control planes, and each control plane is a component of a tenant network and includes routing algorithms corresponding to traffic classes. The tenant network is configured to use feedback data of link conditions of the tenant network with at least one routing algorithm to control routing of tenant traffic of a corresponding traffic class.

Abstract: Techniques are disclosed for providing a file system interface for an object store intended to support simultaneous access to objects stored in the object store by multiple clients. In accordance with one method, an abstraction of a root directory to a hierarchical namespace for the object store is exposed to clients. The object store is backed by a plurality of physical storage devices housed in or directly attached to the plurality of host computers and internally tracks its stored objects using a flat namespace that maps unique identifiers to the stored objects. The creation of top-level objects appearing as subdirectories of the root directory is enabled, wherein each top-level object represents a separate abstraction of a storage device having a separate namespace that can be organized in accordance with any designated file system.

Abstract: Example methods are provided for a network device to perform adaptive polling in a software-defined networking (SDN) environment. One example method may comprise: operating in a polling mode at a current polling round to detect zero or more packets that require packet processing by the network device. The method may also comprise: determining packet characteristic information associated with multiple polling rounds that include the current polling round and one or more previous polling rounds; and based on the packet characteristic information, determining whether a resource performance condition associated with the network device is satisfied. In response to determination that the resource performance condition is satisfied, the network device may operate in the polling mode at a subsequent polling round; but otherwise, switch from the polling mode to an interrupt mode.

Abstract: A method to implement a cloud application includes receiving a blueprint of the cloud application, wherein the blueprint specifies virtual machines and a network connecting the virtual machines and being isolated from traffic external to the virtual machines. The method further includes automatically selecting a cloud profile specifying a cloud provider and a network isolation strategy and deploying the blueprint with the cloud provider by causing the cloud provider to create the virtual machines, create the network with the network isolation strategy, and attach the virtual machines to the network.

Abstract: In one set of embodiments, a host system can perform a random walk along a graph representing network traffic in a virtual network, where the virtual network comprises a plurality of virtual machines (VMs) running on a plurality of host systems including the host system, and where the random walk starts from a node of the graph corresponding to a VM running on the host system. The host system can further construct, based on the random walk, a local neighborhood of VMs associated with the VM and determine, based on the local neighborhood, whether the VM is a localized VM. Upon determining that the VM is not a localized VM, the host system can transmit a random walk data entry identifying the VM and the local neighborhood to a server communicatively coupled with the plurality of host systems.

Abstract: Some embodiments provide a novel method for deploying different virtual networks over several public cloud datacenters for different entities. For each entity, the method (1) identifies a set of public cloud datacenters of one or more public cloud providers to connect a set of machines of the entity, (2) deploys managed forwarding nodes (MFNs) for the entity in the identified set of public cloud datacenters, and then (3) configures the MFNs to implement a virtual network that connects the entity's set of machines across its identified set of public cloud datacenters. In some embodiments, the method identifies the set of public cloud datacenters for an entity by receiving input from the entity's network administrator. In some embodiments, this input specifies the public cloud providers to use and/or the public cloud regions in which the virtual network should be defined. Conjunctively, or alternatively, this input in some embodiments specifies actual public cloud datacenters to use.

Abstract: Techniques for efficiently purging non-active blocks in an NVM region of an NVM device using virtblocks are provided. In one set of embodiments, a host system can maintain, in the NVM device, a pointer entry (i.e., virtblock entry) for each allocated data block of the NVM region, where page table entries of the NVM region that refer to the allocated data block include pointers to the pointer entry, and where the pointer entry includes a pointer to the allocated data block. The host system can further determine that a subset of the allocated data blocks of the NVM region are non-active blocks and can purge the non-active blocks from the NVM device to a mass storage device, where the purging comprises updating the pointer entry for each non-active block to point to a storage location of the non-active block on the mass storage device.

Abstract: Disclosed are various embodiments for provisioning client devices. A configuration file previously installed on the computing device can be read. The configuration file can contain a provisioning address. Then, a user account is automatically created using a predefined username and credential stored in the configuration file. Next, an enrollment request can be sent to the provisioning address to enroll the computing device with a provisioning service using the user account. In response, an enrollment response can be received from the provisioning service. The computing device can then be configured based upon the enrollment response.

Abstract: An example method of implementing internationalization and localization for a software application includes: receiving, at a service, a first request from the software application for a localized resource corresponding to a target locale, the localized resource including a string or a format; sending a second request from the service to a backend server for the localized resource; receiving the localized resource from the backend server in response to the second request; and returning the localized resource from the service to the software application.

Abstract: Methods and systems are disclosed for populating a fail-over cache. When host computer systems in a system each have a content based read cache, the methods and system provide several functions applied in different orders for determining blocks that are to be included in the fail-over cache. Each function attempts a different strategy for combining the contents of the caches of each host computer system into the fail-over cache. If any strategy is successful, then the fail-over cache is placed into service. If all of the strategies fail, then an eviction strategy is employed in which blocks are evicted from each cache until the combination of caches meets a requirement of the fail-over cache, which, in one embodiment, is the size of the fail-over cache.

Abstract: A computing environment can include a host system that maintains a guest system, and a hardware component configured to implement artificial intelligence (“AI”) methods of processing and analyzing date. The guest system can provide a virtual computing environment that receives a request to implement an AI application, and utilize a framework and a guest library to convert data from the AI application into an intermediate representation (“IR”). The host system can receive the IR with a virtual device (“VD”), and utilize an IR backend to translate the IR into hardware operations for the hardware component. Translated hardware operations can be provided to, and carried out by, the hardware component to provide an implementation of the AI application. Results of the hardware operations can be transmitted from the VD of the host system to a VD driver of the guest system, virtualizing the hardware component relative to the guest system.

Abstract: Examples provide a method of communication between a client application and a filesystem server in a virtualized computing system. The client application executes in a virtual machine (VM) and the filesystem server executes in a hypervisor.

Abstract: An in-memory cache for a computer system having a first storage and a second storage where the first storage is a cache for the second storage, tracks priority levels of block attributes stored therein. If a data item is cached in the first storage, the block attribute corresponding to the data item is stored in the in-memory cache as a high priority block attribute. If a data item evicted from the first storage, the block attribute corresponding to the data item is stored in the in-memory cache as a low priority block attribute. When the cache becomes full, the low priority block attributes are evicted before the high priority block attributes.

Abstract: Example methods and systems for failure handling for service chaining with service path monitoring. One example may comprise a first computer system detecting a data packet that is being forwarded along a first service path. The first computer system may configure a liveness check query and send the liveness check query along with the data packet towards a service virtualized computing instance to cause a liveness check response. In response to detecting the liveness check response from the service virtualized computing instance, the first computer system may determine that the service virtualized computing instance is available. Otherwise, report information may be generated and sent to trigger a switch from the first service path to a second service path that excludes the service virtualized computing instance.