Artica

Linux divides its physical RAM (random access memory) into chucks of memory called pages. Swapping is the process whereby a page of memory is copied to the preconfigured space on the hard disk, called swap space, to free up that page of memory. ... [More] The combined sizes of the physical memory and the swap space is the amount of virtual memory available. Swapping is necessary for two important reasons : First, when the system requires more memory than is physically available, the kernel swaps out less used pages and gives memory to the current application (process) that needs the memory immediately. Second, a significant number of the pages used by an application during its startup phase may only be used for initialization and then never used again. The system can swap out those pages and free the memory for other applications or even for the disk cache. However, swapping does have a downside. Compared to memory, disks are very slow. Memory speeds can be measured in nanoseconds, while disks are measured in milliseconds, so accessing the disk can be tens of thousands times slower than accessing physical memory. The more swapping that occurs, the slower your system will be. Sometimes excessive swapping or thrashing occurs where a page is swapped out and then very soon swapped in and then swapped out again and so on. In such situations the system is struggling to find free memory and keep applications running at the same time. In this case only adding more RAM will help. Linux has two forms of swap space: the swap partition and the swap file. The swap partition is an independent section of the hard disk used solely for swapping; no other files can reside there. The swap file is a special file in the filesystem that resides amongst your system and data files. Artica v1.5.012111 provide a watchdog that clean the swap automaticaly when it execeed a %used or a used size in MB More Infos [Less]

With Artica v1.5.011916 you can globaly monitor open ports inside your network Artica servers linked to your Artica Meta account sends open ports list in order to display all open ports of your linked servers. More Infos

With Artica Meta and Artica 1.5.011819 you can manage fetchmail rules from the global Management console. With this feature you will be able to centralize all mail retreival rules from a single point accross multiple servers. More Infos...

In 1.5.011623 you have a new option to disable SSL (https) for the Web Artica front-end interface. If your server is an internal server and you did not need to use SSL to connect to the web front-end use this procedure : More Infos

Artica Meta is able to send commands to remote Linux servers in order to deploy softwares. This task reproduce the local Artica "Setup center". With this feature you will be able to maintain managed softwares. More infos

If your remote Artica servers using FreeWebs features and awstats are enabled, you will be able to centralize awstats statistics from a single point. When remote servers executes awstats for web site statistics generation, each server will report ... [More] to the central servers web pages generated by the statistics tool. If some statistics are sended to the Meta console, you will view an icon near the web site name in the list. More infos.. [Less]

With Artica you are able to create illimited web sites for your users. You can add statistics for each web server using awstats. Note: If your Artica server is connected to "Artica Meta Global Management console", all statistics are sended to the ... [More] central server in order to visalize all statistics for each Artica server. Statistics are generated for the whole web sites each 5 hours. More infos [Less]

With Artica Meta you will be able to  create remotely HTTP/HTTPS Web sites Artica Meta sends commands to remote servers using the FreeWebs artica feature In this case you will be able to monitor and manage websites on multiple servers trough a ... [More] single interface. Usefull when you needs to monitor servers running in an Internet Datacenter. See more... [Less]

By default, the Postfix spooler use the hard disk to play with messages. If you need to speedup the Postfix process you can dedicate a part of your server RAM has the spool directory. Tthis method will improve the Postfix performance but understand ... [More] that you will lose mails if the server is rebooted or is turned off. Use this feature if you know that mails are processed without need to store them for a long time. Read More [Less]

This article helps you to connect the Postfix MTA mail system to an Active Directory server or an OpenLDAP server. This feature has been released on the 1.4.122209 Artica version. Read more...