ROSA Linux has no less than seven variants:

• ROSA Enterprise Desktop X 1 is recommended for use in a corporate environment and is designed to equip the workstations and servers without special requirements for information security;
• ROSA Enterprise Linux Server is, in fact, yet another clone of RHEL with some additions from the corporate variant of Mandriva;
• ROSA Desktop Fresh is the most recent distribution that contains the latest improvements from the developer;
• ROSA CHROME is a distribution certified by the Russian Federal Service for Technical and Export Control (FSTEC of Russia) and is designed for work with the state secrets;
• ROSA NICKEL has the similar purpose as the previous variant, but it is certified by the Russian Defense Ministry;
• ROSA COBALT is certified by FSTEC of Russia, including for the work with personal data.

Unfortunately, the last three distributions are not publicly available, and there is no point to talk about ROSA Enterprise Desktop and Server, so this article will focus on the recently released ROSA Desktop Fresh R5.

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It often happens that the costs of the project’s hosting service are higher than its other living expenses. It specifically refers to those projects using Amazon AWS extensively. But far from everyone knows that Amazon delivers various means to allow its users to pay less for the use of AWS services.

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In our work, we are faced with very different projects. In one way or the other, many of them could be called “high-load projects”. If you spend some of your spare time on categorizing these projects and discard such ordinary things as second-rate online stores while roughly grouping what is left, you can come up with an approximate classification. It includes four types of high load:

• By the number of requests (banner networks);
• By traffic (video services);
• By logic (complex back-end calculations);
• Mixed (everything that fell into several categories).

Now, let’s have a closer look at them.

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Enterprise Information Portals (EIP) have gradually been transformed from fashion to an irreplaceable business tool providing employees with a single point of access to data, tools for management of business processes and information exchange facilities. The Liferay project to be distributed under an Open Source license competes quite successfully with most commercial solutions.

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Apache Tomcat is a server of web applications primarily used in commercial environment not only as an application platform, but also as a component of large projects related with providing of a web-interface. In corporate sector, security of information systems has the highest priority, while infrastructure stability ensures failure-free operation. Let us test a vaunted stability and security of UNIX daemons taking Tomcat as an example.

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Since the beginning of dynamic Web development, а synchronization problem has emerged concerning a set of software programs, its versions and configurations in production and development environments. The developer of Vagrant has invented a new tool which is supposed to help solve the problem — Packer.

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Linux supports a highly versatile set of administration tools. On the one hand, it is good — users have options. But, on the other hand, this very variety is not quite suitable for a corporate sector, as there are often tens and hundreds of computers to be managed. Recently, quite a number of tools have emerged to simplify this task, and we will discuss one of them.

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