Abstract: In an approach for distributed management of a network, a processor discovers a network, wherein the network is comprised of a plurality of nodes and an at least one switch. A processor identifies a first port associated with the at least one node. A processor identifies a link between the first port and a second port within the network. A processor determines the at least one link is properly configured. A processor selects a first node of the plurality of nodes to be a master node, wherein the master node is configured to manage the network. A processor initializes a routing table, wherein the routing table contains locations of each node in the plurality of nodes and a location of the at least one switch. A processor adjusts by the first node, the routing table based on the change to the network.

Abstract: In an approach for managing read-modify-write operations within a network. Aspects of an embodiment of the present invention include an approach for managing read-modify-write operations within a network, wherein the approach includes a processor for determining that a lock associated with a component of a network is set. A processor identifies a key associated with the lock. A processor determines that the key associated with the lock has not been altered since a previous time cycle. A processor responsive to determining that the key associated with the lock has not been altered, determines that a lock timeout has expired for the key, wherein the lock timeout specifies, at least, a period of time. A processor responsive to determining that the lock timeout has expired for the key, releases the lock.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that enable a computer that is executing a first operating system kernel to load a second operating system kernel and one or more software components to a region in a memory. Using functions incorporated in the kernel, the region in the memory is tagged, and the computer initiates a boot of a second operating system kernel while preserving in the tagged region contents stored therein. Following the boot of the second operating system kernel, the computer executes the one or more software components from the tagged region that was preserved during the boot.

Abstract: Apparatus and computer program products implement embodiments of the present invention that enable a computer that is executing a first operating system kernel to load a second operating system kernel and one or more software components to a region in a memory. Using functions incorporated in the kernel, the region in the memory is tagged, and the computer initiates a boot of a second operating system kernel while preserving in the tagged region contents stored therein. Following the boot of the second operating system kernel, the computer executes the one or more software components from the tagged region that was preserved during the boot.

Abstract: Methods, systems, and physical computer-readable storage media are now provided that reduce latency and improve efficiency of a system after reboot of an Infiniband (IB) cluster. A method of rebooting an Infiniband cluster includes rebooted endpoints, which set a locally corresponding local identifier (LID). The rebooted endpoints then activate a corresponding local logical link.

Abstract: In an approach for election of a manger for a network, a processor detects that a first set of management tasks is not running. A processor identifies at least a first node in a network and information about the first node. A processor determines that the first node is capable of performing the first set of management tasks based on the information about the first node. A processor elects the first node as a manager in the network to perform the first set of management tasks.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that enable a computer system comprising networked computers to self-heal from a boot failure of one of the computers. In some embodiments, upon detecting a first computer failing to successfully load a first boot image, a second computer configures the first computer to boot a second boot image. Upon power cycling, the first computer loads the second boot image.

Abstract: In an approach for distributed management of a network, a processor discovers a network, wherein the network is comprised of a plurality of nodes and an at least one switch. A processor identifies a first port associated with the at least one node. A processor identifies a link between the first port and a second port within the network. A processor determines the at least one link is properly configured. A processor selects a first node of the plurality of nodes to be a master node, wherein the master node is configured to manage the network. A processor initializes a routing table, wherein the routing table contains locations of each node in the plurality of nodes and a location of the at least one switch. A processor adjusts by the first node, the routing table based on the change to the network.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer. Prior to copying the software stack an error is detected in a boot image stored on a boot device for the first computer by identifying an invalid signature for the boot image.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer. Prior to copying the software stack an error is detected in a boot image stored on a boot device for the first computer.

Abstract: Methods, systems, and physical computer-readable storage medium are provided to improve efficiency of systems operating on internet protocol (IP) over Infiniband (IB) networks. In an embodiment, by way of example only, a method is provided for implementing redundancy for IB networks. The method includes detecting a failure at a first source port of a source node having a plurality of source ports, selecting a new source port, sending an address resolution protocol (ARP) message to one or more other nodes in communication with the source node including an IP address of the source node and IB address of the new source port of the source node, and re-balancing host traffic.

Abstract: Embodiments of the present invention are provided that include executing, by a processor, a software stack received from a first boot image, and retrieving and executing, by the processor, a second software stack. A writeable boot device such as a storage device with a removable medium is detected, and the second software stack is saved by replacing, on the writeable boot device, the first boot image with a second boot image comprising the second software stack. The second software stack is saved upon detecting the boot device having no boot image.

Abstract: Embodiments of the present invention are provided that include executing, by a processor, a software stack received from a first boot image, and retrieving and executing, by the processor, a second software stack. A writeable boot device such as a storage device with a removable medium is detected, and the second software stack is saved by replacing, on the writeable boot device, the first boot image with a second boot image comprising the second software stack.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer. Prior to copying the software stack an error is detected in a boot image stored on a boot device for the first computer.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer. Prior to copying the software stack an error is detected in a boot image stored on a boot device for the first computer by identifying an invalid signature for the boot image.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that enable a computer system comprising networked computers to self-heal from a boot failure of one of the computers. In some embodiments, upon detecting a first computer failing to successfully load a first boot image, a second computer configures the first computer to boot a second boot image. Upon power cycling, the first computer loads the second boot image.

Abstract: Apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a first computer having a first memory, a software stack in a second memory of a second computer coupled to the first computer via a network. The software stack is copied from the second memory to the first memory, and the copied software stack is executed by the first computer.

Abstract: Various embodiments of the present invention that include executing, by a processor, a software stack. A writeable boot device such as a storage device with a removable medium is detected, and a second software stack is saved by replacing, on the writeable boot device, a first boot image with a second boot image comprising a second software stack.

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that enable a computer system comprising networked computers to self-heal from a boot failure of one of the computers. In some embodiments, upon detecting a first computer failing to successfully load a first boot image, a second computer configures the first computer to boot a second boot image. Subsequent to configuring the first computer, the first computer is power cycled, and upon the power cycling, the first computer loads the second boot image.