Free management and monitoring tools software for linux

MOSIX Grid and Cluster Management is a management system for Linux clusters and organizational grids that provides a Single-System Image.
In a MOSIX based system, there is no need to modify or link applications with any library, copy files, login to remote nodes, or even assign processes to different nodes; it is all done automatically. Just "fork and forget", like in an SMP.
Main features:
- Provides a Single-System Image (SSI).
- Automatic resource discovery.
- Adaptive workload distribution by process migration:
- Preserves the users "login-node" environment.
- No need to open "logins" or copy files to remote clusters.
- No need to link applications with special libraries.
- Automatic process migration:
- For load-balancing.
- From slower to faster nodes.
- When a node run out of free memory.
- Supports virtual organizations:
- Manages disruptive configurations:
- Clusters can join or leave the Grid at any time.
- Guest processes are moved out before a cluster is disconnected.
- Long-running guest processes are not killed.
- Clusters could be shared symmetrically or asymmetrically.
- Each cluster owner can assign different priorities to guest processes from other clusters.
- A flexible use of nodes within and among different groups.
- Local processes force out guest processes.
- A secure run time environment (sandbox) for guest processes.
- Live queuing - queued jobs preserve their full generic Linux environment.
- Support of batch jobs, checkpoint and recovery.
- An on-line monitor for the status of the Grid and each cluster.
Enhancements:
- This release uses version 2.6.22.3 of the Linux kernel.

Blackbird Enterprise Service Bus is the first enterprise service bus (ESB) for PHP developers. The project provides a run-time container that loads, manages, and executes classes, provides connectivity and utility services to access external resources, such as message queues and collects and exposes metrics data to management tools
Main features:
- Use PHP to rapidly develop applications and application integration services
- Easy to learn and use - get coding in minutes
- Written for developers by developers
- Command-line and protocol-driven management and monitoring
- Easy object configuration, deployment, and load/unload tasks
- Less memory usage than a Java ESB
- Metrics collection, making it easy to develop monitoring and management tools
- Extensible protocol handler layer - supports STOMP , SMTP, and Jabber out of the box
What Its Not:
- A full-blown, Java ESB like Apache ServiceMix
- A replacement for other middleware, such as Apache ActiveMQ
- As fast, in theory, as a compiled language (although see below)
- Fully object-oriented (because PHP is not)
- Written by architects for architects
Why Are You Doing This When Already Exists?
ITema provides managed, hosted applications to small businesses, with an emphasis on integration. Part of our vision is to offer our customers choice, so they arent locked into a specific product or vendor. We need very good integration technology or well end up with an unmanageable spider web of integration hooks. An ESB is tailor-made for this type of work. It gives us the loose coupling we need to let applications run independently, and handles grunt-work tasks like communicating via message queues so we can focus on writing the code that does the real work.
The available Java ESB products didnt meet our needs. PHP was a more natural choice, but there was no ESB available for it. We decided it was better for us to write what we needed than to try to shoehorn what we were doing into another product. Our hope is that by releasing Blackbird under the GPL, other developers will get as much out of it as we have.
Blackbird isnt intended to be an isolated project, or a replacement for a Java ESB. In fact, we anticipated that it could be very useful to use both a Java and PHP ESB at the same time, in different layers of an architecture. Blackbirds design makes this straightforward, and it expects to communicate via STOMP with a message queue such as Apache ActiveMQ. It can even use the same ActiveMQ instance that supports a ServiceMix environment, so writing a Blackbird component to communicate with a ServiceMix component is easy!

MATtool project a powerful UNIX configuration and monitoring tool enables large cluster management. Solutions based tools enable administrators to get on with the more important jobs.
MAT is an easy to use network enabled UNIX configuration and monitoring tool. It provides an integrated tool for many common system administration tasks. The GUI interface hides much of the differences between UNIX varieties in a heterogeneous environment. The straight forward interface hides the complexity of the underling configuration files, allowing many of the mundane administrative tasks to be safely delegated to others. From a single MAT console you can manage every UNIX host on your network where the MAT agent is installed.
Tools:
MAT is a time saver. MAT provides many of the tools a System Administrator needs during the day, including DNS, NIS, Backups, and Replication. A powerful feature is the ability to run a MAT command on many hosts at once. For example a new group could be added to all machines just by doung a select all, then adding the new group. For generic files a simple editor window is provided, with this the configuration files for a sites web servers could be changed, just by editing one.
Monitoring:
MAT provides two kinds of monitoring, namely current status, and historic logs. Through the Status screen you can inspect the current state of the machine. The MATd screen gives you access to historical data on the machine. It lets see how heavily loaded you machines are, how the network interface is performing, and many other parameters.
The MATd daemon allows you to specify alarm thresholds. It can watch your FTP and Email server for failures. It can watch your disks from getting full. It can watch the CPU use for thrashing, and several others. You can taylor your response to each alarm situation, including taking corrective action.
Administration:
The administrative tasks can be delegated to other individuals. A MAT user can be granted as much or little access as you require. Users can be given different access rights on all your MAT hosts. Every MAT user can be managed from a single console. A log file records al l the MAT commands issued on a host, and is viewable from the MAT console. MAT is comprised of three parts:
The MAT console
The MAT agent
The MAT daemon
The MAT console provides an easy to use interface through which the user manages the remote host. The console only needs to be installed on one machine on your network. The console issues commands to the MAT agent of the managed host. The console also interprets the data returned by the agent. The console will graph many of the parameters monitored by the MAT daemon. The MAT agent is responsible for doing the actual work of retrieving data, modifying configuration files, and running commands. It is installed on every host you wish to manage. The MAT daemon is responsible for monitoring a host. It periodically monitors and records system parameters for later analysis.
Enhancements:
- Packaged MATtool as a Rocks roll. The roll will discover and group compute nodes according to rack number.
- Added an ip.allow file. Only those IP addresses listed in this file will be able to connect to the MATtool agent. It is available when the MATtool agent is ran as a daemon, instead of from inetd. For example, an entry like: "192.168.211." would allow all hosts on subnet 192.168.211 to access the agent. If you use this the command relay, and any backup or replication servers MUST be included in the list.
- Added the option of running the agent as a daemon. This is needed for the above feature, and for SSL.
- Added a few sections to the online help.
- Changed the OS command section so you can enter many commands at once. Set the default to non- backgrounded.
- Upgrade no longer depends on uudecode binary being on the hosts. SUSE Linux users can now upgrade from the console without having to install uudecode on all hosts.
- Fixed the password to allow non alphanumeric characters.
- Added MD5 password support. If root used an MD5 password, then all others will use MD5.
- Fixed the network probing so it only gathers data on real physacal interfaces on Linux.
- Added some optimizations to the command relay code to improve the speed. The Nagle algorithm is turned off for connection phase, and on again to transfer multi-line commands.
- Fixed a problem on Linux hosts reporting WIFEXITED when the child was still running. This affected the command relay.
- Fixed buffer overrun, which would have affected many commands.

PhpXmail is Web-based management software for the Xmail mail server. It allows the administrator of the mail server to perform configuration management and monitoring tasks for the mail server.
It allows the postmaster for each domain the Xmail server is configured to perform management functions. The project allows the users who have a mail account to manage their account settings.
Enhancements:
- IE7 compatibility was fixed.