Gossimon is a gossip-based distributed monitoring system for a cluster of Linux nodes. Each node in the cluster periodically send information about itself and others to a randomly selected node. This way, each node constantly receives information about cluster nodes. This information is locally maintained (constantly updated) by each node and can be used by various clients for monitoring and resource allocation. The gossip protocols used by gossimon are very robust to node failure, and the information quality is hardly degraded even when large parts of the cluster are taken down. The package contains: infod (the daemon responsible for collecting and sending information for other nodes); mmon (a curses-based monitoring client displaying information about cluster nodes); and infod-client (a command-line client that retrieves cluster information in XML format).
fswalker is an indexer and query tool for large filesystems. On large filesystems it is impossible to run tools such as du and obtain results in a reasonable time. fswalker crawls over a filesystem and populates a SQLite database containing information about each file. The fsq utility can then be used to query the database and obtain information much faster. It is intended that fswalk be run in a periodic manner so the sysadmin can monitor changes in the filesystem and produce reports.
copymon provides file copying processes with a progress bar. Neither cp nor rsync provide means to monitor the copying process, nor a progress bar. copymon is a wrapper which performs a scan of the directory to be copied and collects information about the files to be copied. After that, it spawns the actual copying program (which can be cp, rsync, or tar) and monitors its progress. copymon can be easily enhanced to support more programs and can be extended to provided different types of progress bars.
Great projects, used on production clusters and is a viable monitoring tool both for the user and the administrator. Shows low time resolution resource usage.