177 results about "High-availability cluster" patented technology

Systems and methods, including computer program products, providing high-availability in server systems. In one implementation, a server system is cluster of two or more autonomous server nodes, each running one or more virtual servers. When a node fails, its virtual servers are migrated to one or more other nodes. Connectivity between nodes and clients is based on virtual IP addresses, where each virtual server has one or more virtual IP addresses. Virtual servers can be assigned failover priorities, and, in failover, higher priority virtual servers can be migrated before lower priority ones. Load balancing can be provided by distributing virtual servers from a failed node to multiple different nodes. When a port within a node fails, the node can reassign virtual IP addresses from the failed port to other ports on the node until no good ports remain and only then migrate virtual servers to another node or nodes.

A high availability cluster and method of storage medium management in such high availability cluster. A number k of nodes belonging to the cluster, where k≧2 and includes a master node, are provisioned with high-access-rate and low-access-rate storage media. A file is written to the high-access-rate medium of a serving node selected from among k-1 nodes excluding the master node. The file is also written to low-access-rate medium of each of k-2 nodes excluding the master node and the serving node. A distributed storage medium management protocol supervises file migration from the, low-access-rate medium of a back-up node to the high-access-rate medium of the back-up node upon disruption of file availability on the serving node. File rebalancing relies on parameters including popularity, write- and read-requests, capacity, processing load or cost.

A high availability, scalable cluster server system for enterprise data management. The server is a cluster of two or more nodes. Each node runs one or more virtual servers. A virtual server consists of network resources and resources for enterprise data management. Failover is based on moving virtual servers from a failed node to a healthy node. The invention provides for network failover within the same node. Enterprise data management consists of data discovery, data categorization and applying enterprise policies on categorized data. One of the problems of data management is the diversity of policies and in some cases their conflicting requirements. According to one aspect of the invention, enterprise policies are broking into policy entities. Policy entities represent the simplest policy unit. Some of the policy entities are shared between the diversified enterprise policies. Identifying a data management policy with the highest priority and applying the policy entity that belongs to it resolve conflict in policy requirements.

A transparent high-availability solution utilizing virtualization technology is presented. A cluster environment and management thereof is implemented through an automated installation and setup procedure resulting in a cluster acting as a single system. The cluster is setup in an isolated virtual machine on each of a number of physical nodes of the system. Customer applications are run within separate application virtual machines on one physical node at a time and are run independently and unaware of their configuration as part of a high-availability cluster. Upon detection of a failure, traffic is rerouted through a redundant node and the application virtual machines are migrated from the failing node to another node using live migration techniques.

The invention discloses a realization method and system for a high-availability and high-performance database cluster. The method comprises the following steps: installing all dependent packages of distributed replicated block equipment software, a high-availability cluster assembly and the multi-master software of a database on a master machine and standby machines in the cluster; establishing the environment of the distributed replicated block equipment software on the master machine and the standby machines in the cluster; establishing the environment of the high-availability cluster assembly on the master machine and the standby machines in the cluster; establishing the multi-master environment of the database on the master machine, the standby machine and slave machines in the cluster; carrying out resource definition on the master machine and the standby machines in the cluster to enable the master machine and the standby machines in the cluster to be mutually switched and enable the salve machines to access the database service of the master machine or the standby machine. According to the realization method and system, free and open source software is used for improving a fault-tolerant function, a seamless handling capability can be provided when a certain node fails, a data loss rate is almost zero, the expandable multi-master node permits multiple computers to simultaneously process a complex data problem, and the database achieves high performance and high availability.

One embodiment disclosed relates to a method of preventative maintenance of a high-availability cluster. A least-recently-tested active node is determined. The least-recently-tested active node is swapped out from the HA cluster, and a stand-by node is swapped into the HA cluster. Other embodiments are also disclosed.

A SAN-based cluster backup system and method are provided. The system and method are automated, do not use a LAN for backup data, and are made aware of application failover events. The system and method are composed of two main components: a backup service, and a primary coordinator. The backup service performs the backup of the applications that are hosted on a particular node. The backup service periodically checkpoints the state of the backup job and communicates the status to the primary coordinator. The primary coordinator controls all backup operations in the cluster. The user submits backup jobs for the applications through the primary coordinator. If a node fails during a backup operation, the primary coordinator can ensure that the failed backup job can be resumed from the last checkpoint on the failed-over node. In this way, repetitive backups can be avoided, thereby increasing efficiency.

A system and method for detecting a state change of a resource in a high availability (HA) cluster are disclosed. The method comprises registering to receive notification when the resource changes state. The method further comprises receiving a notification of a state change of the resource and automatically performing one or more actions to ensure high availability of the first resource in response to the notification.

A data protection agent or server running on a computing device receives a cluster configuration of a high availability cluster. The data protection agent or server identifies highly available data of an application running on the high availability cluster based on the clustering. The data protection agent or server then implements a data protection policy that backs up the highly available data.

The invention particularly relates to a method for monitoring a high-availability cluster resource. The method for monitoring the high-availability cluster resource comprises the following steps that: heartbeat software, cluster resource layer software and cluster graphical management software are modified, compiled and installed on a cluster node based on a domestic platform; simultaneously, a master node, a backup node, a management node and a monitoring node are arranged in a cluster based on the domestic platform; the backup node and the master node keep information synchronous at any time; and the backup node takes over works of the master node in time when the master node has a downtime fault. According to the method for monitoring the high-availability cluster resource disclosed by the invention, the backup node and the master node keep information synchronous at any time; the backup node takes over works of the master node in time when the master node has the downtime fault; therefore, information safety and uninterrupted continuous operation of various key applications on the domestic platform can be ensured; and virtuous circle of sustainable operation is realized.

One embodiment disclosed relates to a method of status generation for a node of a high-availability cluster. A heartbeat signal is sent from the node through a network to the cluster. In addition, a current status of the node is determined, and the status is sent out through a specialized interface to a next node. Another embodiment disclosed relates to a method of cluster-wide management performed per node. A heartbeat input received from the previous node is checked. Furthermore, an up / down status input received from the previous node and a degraded status input received from the previous node are also checked. Another embodiment disclosed relates to a system for of a high-availability cluster. The system includes a general inter-node communication network that is configured to carry signals including heartbeat signals from the nodes. In addition, a separate inter-node communication channel is included for communicating node status signals.

Provided are a virtualization based high availability cluster system and a method for managing failures in a virtualization based high availability cluster system. The high availability cluster system includes a plurality of virtual nodes, and a plurality of physical nodes each including a message generator for generating a message denoting that the virtual nodes are in a normal state and transmitting the generated message to virtual nodes in a same physical node. One of the virtual nodes not included in a first physical node among the plurality of the physical nodes takes over resources related to a service if a failure is generated in one of virtual nodes included in the first physical node.

One embodiment disclosed relates to a node system of a high-availability cluster. The node system includes at least a first register and an output port. The first register stores multi-state status data of the node, and the output port sends signals representing this multi-state status data. The multi-state status data includes at least one degraded state. The node system may also include a second register and an input port. The input port receives signals representing the multi-state status data of another node. The second stores this multi-state status data from the other node. Another embodiment disclosed relates to a method of status reporting for a node of a cluster. A set of rules is applied to determine current multi-state status of the node. The states of the multi-state status including a good state, a bad state, and at least one degraded state.