Setup Grub to remember your last booted OS

Setup Grub to remember your last booted OS

You absolutely have rebooted from Linux to load Windows several times. Those that dual-boot their system have done this quite a lot. Dual-booting relies heavily on the Grub bootloader and its entries; this gets worse when you realize that Windows has to restart a lot as it updates. Actually, there’s a way to set Grub to remember where you last left off! This means when you load Windows (or any operating system), and it restarts, it’ll load it again!

Isolating systems with Linux Namespaces

Isolating systems with Linux Namespaces

If you’ve used tools like Docker, you already know that these tools are capable of isolating processes in small “containers”. Running processes in Docker containers is like running them in virtual machines, only these containers are significantly lighter than virtual machines.

With the introduction of Linux namespaces, it became possible to have multiple “nested” process trees. Each process tree can have an entirely isolated set of processes. This can ensure that processes belonging to one process tree cannot inspect or kill – in fact cannot even know of the existence of – processes in other sibling or parent process trees. Every time a computer with Linux boots up, it starts with just one process, with process identifier (PID) 1. This process is the root of the process tree, and it initiates the rest of the system by performing the appropriate maintenance work and starting the correct daemons/services.

Datacenter transformation, RHEL &VDI

Datacenter transformation, RHEL &VDI

The event organized by our partner MicroCAD Systems on the Transformation of the Datacenter where they talked about the advantages of UDS Enterprise and Nutanix Acropolis as a VDI joint solution, the new features introduced in the new version of Red Hat Enterprise Linux and how our connection broker meets the current needs of the workplace have been the most popular articles in our blog during the las two weeks.

Find below the links to the posts on these topics so that you can keep up to date with the most interesting news on virtualization and Open Source according to our readers:

How to improve the security of Linux containers

How to improve the security of Linux containers

Software developers use Linux containers to save time and money, providing a mechanism to build much more manageable applications through development, testing and environments of implementation with a better security in the software life cycle as in their actions and scenarios.

According to Forrester, more than half of operations and IT development responsible see security as the biggest concern when adopting containers.

RHEL 7.3 improves performance and security

RHEL 7.3 improves performance and security

Red Hat has recently announced the general availability of Red Hat Enterprise Linux (RHEL) 7.3, including new features that improve performance, security, and reliability.

As to performance, RHEL 7.3 adds lightweight tunnels, enabling guest instances of Red Hat Enterprise Linux 7.3 to be more secure, efficient, scalable and flexible. Additionally, enhancements to the bulk packet memory allocator improve performance for both 40 and 100 Gb networking interfaces. Among other things, high-transaction applications have now lower and RHEL now supports the Block SCSI layout format and the Flex Files layout format to manage more easily Parallel NFS (pNFS) clusters.

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