Bcfg2 helps system administrators produce a consistent, reproducible, and verifiable description of their environment, and offers visualization and reporting tools to aid in day-to-day administrative tasks. It is based on an operational model in which the specification can be used to validate and optionally change the state of clients, but in a feature unique to bcfg2 the client's response to the specification can also be used to assess the completeness of the specification. Using this feature, bcfg2 provides an objective measure of how good a job an administrator has done in specifying the configuration of client systems. Bcfg2 is therefore built to help administrators construct an accurate, comprehensive specification. Bcfg2 has been designed from the ground up to support gentle reconciliation between the specification and current client states. It is designed to gracefully cope with manual system modifications. Bcfg2 can also enable the construction of complex change management and deployment strategies.
Quota Check is a simple application which is designed to run when a user logs into a computer. If they have less than a certain amount of free disk quota, they are told to visit the system administrator and are logged out. When a user tries to log into a network home directory which has a quota enforced, and they don't have enough disk space, they risk corrupting their files. Quota Check makes this situation very clear to users who may be otherwise unaware of the problem.
classh is yet another wrapper around ssh for running commands on a number of hosts concurrently. It is similar to xCAT, pssh, Cluster ssh, and a gaggle of other utilities. The only pre-requisite for classh is Python 2.4 or later, and no formal installation is required; a copy of the classh.py file is sufficient to run commands. The SSHJobMan class from classh can be used to create custom job management scripts. This class lets you either wait until all output has returned from a batch job or process the results as they become available by incrementally polling the running job. The output, error messages, exit code, and start and completion times of each job are stored in the results. It's been tested on jobs of over 25,000 hosts and handles over 10,000 hosts per hour across a WAN and without noticeable impact on the administrator's host.
Arkeia Network Backup Enterprise Edition for Ubuntu LTS is a completely free version of the Arkeia Network Backup software specifically for Ubuntu servers. It is available in the Ubuntu LTS (Long-Term Support) software repository. It allows an administrator to backup and restore files via a Web UI. This edition has the option to backup up to 2 machines to a 250 GB VTL or tape drive. It allows you to backup Linux machines, Windows desktops, Mac desktops, FreeBSD servers, and more.