Printable View
I want to know about the virtualization that are used in the Red Hat Enterprise Linux 6. Also I am very eager to know about the security with SSSD in RHEL 6. Since, I am not an expert in Red Hat Enterprise Linux 6, any other information related to it would be helpful. I thought to post here, because you guys explain in simple and better language. I am expecting that someone from your side will provide some information to me sooner.
The operating system includes full support for Kernel-based Virtual Machine (KVM) hypervisor on AMD64 and Intel 64-bit Architkturen. "Transparent hugepages" increase the number of page-size of four to two Kbytes Mbytes. This affects a little bit like a turbo to the memory. RHEL 6 supports up to 64 CPUs for a single virtualized guest. The new x2APIC controller allows direct access to APIC and, therefore, removed the overhead of an emulated access. "Spin locks" for the para-virtualized drivers virtio allows more simultaneous I / O requests, thereby increasing the speed. As a guest, Red Hat Enterprise Linux 6 supported by Xen. This applies to both x86 and for AMD64-/Intel64-Architectures. The paravirtualized pv-ops in the Red Hat kernel included. Thus, the standard kernel of the operating system can use as a paravirtualized guest on Xen. As host supports Red Hat Enterprise Linux 6 Xen not.
The "System Security Services Daemon" (SSSD) is a new feature in RHEL 6 which brings a collection of services for centralized management of identities and authenticate with it. This means, for example, that a local caching (caching) of data is possible. Thus, users can still identify the time, even if the connection to the server is down. SSSD supports a variety of authentication services: Red Hat Directory Server, Active Directory, OpenLDAP, 389, Kerberos and LDAP. SELinux (Security-Enhanced Linux) brings Mandatory Access Control (MAC) with itself and is by default in Red Hat Enterprise Linux enabled 6th Also new to the sandbox mode (sandbox) is. This allows administrators to run applications specifically in secure, small padded cell. Rogue programs can thus be kept in check. Likewise, it is a secure environment for testing programs of course an advantage.
Red Hat RHEL is for 6 numerous documents available. Anyone who would like to deal with specific system should take a look into the very detailed release notes throw. Just search that on Google. The Linux Dsitributor provides to each of the big issues a separate document. Some examples include cluster administration, Logical Volume Manager Administration, Migration Planning Guide, Power Management Guide, Security Guide, Security-Enhanced Linux, Virtual Server Administration and Virtualization. Red Hat Enterprise Linux, there are from 64 euro per yearly subscription. But this is the smallest desktop version that includes only some support. The Standard plan for a workstation will cost 241 euro. On the server side is the price of the number of CPU sockets and support for virtual guests dependent. Anyone who has special needs should best Red Hat on direct contact.
Red Hat is sure to get a beauty award for RHEL 6th But that also does not claim that Linux distribution. Stability, high availability, scalability and security in the server area have always been the favorite hobbies of Red Hat have been. And this tradition holds the Linux distributor. Thanks to the graphical installation wizard to install the system can be fairly straightforward. To configure the server and to administer, but you should bring quite a bit of Linux knowledge. But that's all penguin-powered server versions of the case.
The new features jump to a layman certainly not immediately apparent. But under the hood, you realize the three-year development phase already. The new ext4 and XFS file systems, SSSD, improvements in IPv6 and SELinux and so on. The documents provided are exemplary. Easy to navigate, detailed and informative. It almost makes fun of these technical documents to read. The first impression of Red Hat Enterprise Linux 6: As usual solid, straightforward work of developers who have created an operating system that is normally on hardware in a dark, air-conditioned computer center and just completed his service. RHEL 6 is worth a recommendation.