The MyCAT project is a toolset for managing MySQL/Linux servers, and could be helpful for anyone managing a network of *nix servers whether running MySQL Cluster, standard replication, or not running MySQL at all. At present, it contains three programs. rcall eases use and administration of groups (clusters) of *nix servers by creating logical groupings and a single location from which to run commands on all servers while entering it only once. It requires only an SSH connection. rep_mon is a replication monitor that notifies if a server is lagging or has encountered any errors. It handles any replication topology easily. binlog_mon monitors disk space used by MySQL binary logs, purging only when disk space is needed. It checks all slaves to ensure that purged files are not still being read by slaves. It has configurable behavior in the event that a slave still needs the oldest file.
Cacheonix is a reliable distributed Java cache. It helps software organizations achieve reliability, scalability, and performance in their enterprise applications by distributing cached data across a cluster of computers connected by a high-speed network and converting the per-node memory into a large cache of the shared address space. Cacheonix builds on top of a reliable cache coherence protocol that ensures that all nodes have a consistent view of the shared data.
The gLite distribution is an integrated set of components designed to enable resource sharing. In other words, this is middleware for building a grid. The gLite middleware is produced by the EGEE project. The distribution model is to construct different services ("node-types") from these components and then ensure easy installation and configuration on the chosen platforms.
dCache is a distributed storage solution. It organizes storage across computers so the combined storage can be used without the end-users being aware of precisely which computer stores their data; end-users simply see a large amount of storage. Because end-users need not know on which computer their data is stored, their data can be migrated from one computer to another without any interruption of service. This allows dCache storage computers to be taken out of service or additional machines (with additional storage) to be added without interrupting the service the end-users enjoy.
The SensorWeb project aims at developing the Open SensorWeb Architecture (OSWA) and implementing a standards-compliant platform and middleware for integration of sensor networks with emerging distributed computing platforms such as Grids. It confirms to the Web Services standard defined by the W3C, and the SensorML (Sensor Model Language) standard defined by the OpenGeospatial Consortium.
GLB is a user-space TCP load balancer similar to Pen. It lacks most advanced Pen features, as the aim was to make a user-space TCP proxy that is as fast as possible. It can utilize multiple CPU cores. A list of destinations can be adjusted in runtime. Destination "draining" is supported. It supports "least connected", "round-robin", "random", and "source tracking" balancing policies.
The purpose of the glideinWMS is to provide a simple way to access the Grid resources. To achieve this without reinventing the wheel, glideinWMS is a Glidein-based WMS (Workload Management System) that works on top of Condor. Once setup, final users can submit regular Condor jobs to the local queue and the glidein factory will provide the computing resources behind the scenes. From the final user point of view, the Condor pool just magically grows and shrinks as needed.
vzhaipd (scoyo's Virtuozzo/OpenVZ HA IP Daemon) is a set of mount/umount Container scripts for Parallels Virtuozzo or OpenVZ that will make sure a HA IP is always present on one of two or more Containers. You can think of it as the poor man's VRRP for Virtuozzo and OpenVZ Containers. Use it for general service availability, software load-balancer failover, etc.
Netmem is a client-server software that manages chunks of memory in a transactional way. The server allocates memory and then listens on a socket for the client, which can use these pieces of memory (through read, lock, and unlock operations). It is useful for cluster applications that need a quickly accessible shared space of memory across the network.