Showing posts sorted by relevance for query Red Hat Enterprise Linux 6. Sort by date Show all posts
Showing posts sorted by relevance for query Red Hat Enterprise Linux 6. Sort by date Show all posts

Red Hat Enterprise Linux (RHEL) 6.2 Released

Posted by Avik Sarkar On 12/07/2011 02:56:00 pm



After RHEL 6.2 Beta now Red Hat the world’s leading provider of open source solutions, today announced the general availability of Red Hat Enterprise Linux 6.2. With this milestone, Red Hat includes many enhancements that deliver benefits spanning multiple areas, including performance and scalability. Red Hat Enterprise Linux 6 operating system achieved the largest multi-core Linux configuration results certified to-date on the two-tier SAP® Sales and Distribution (SD) standard application benchmark.1 Proven to perform and scale, Red Hat Enterprise Linux 6 effectively supports large, mission-critical enterprise computing environments.
Vice President and General Manager, Platform Business Unit at Red Hat, said, “The exciting features in Red Hat Enterprise Linux 6.2 with new impressive SAP® benchmark results allow our enterprise customers to have increased confidence that Red Hat Enterprise Linux 6 can run their enterprise workloads with high performance across physical, virtual and cloud computing environments.”
Enterprises can confidently migrate to the latest multi-core technology with Red Hat Enterprise Linux 6. On the latest two-tier SAP SD standard application benchmark, Red Hat Enterprise Linux 6 achieved more than 22,000 SAP SD benchmark users on a single system. On this same benchmark, the HP DL980 G7 system running Red Hat Enterprise Linux 6 fully utilized all 80 cores and 160 threads in the 8-processor system running MaxDB 7.8 and the SAP enhancement package 4 for the SAP ERP 6.0 application. This is the largest Linux result submitted to SAP to-date. The results demonstrate the capabilities of the HP ProLiant DL980 G7 8-processor system’s PREMA architecture and smart CPU caching technology. Results are as of December 2, 2011, certification number 2011052.
“Clients need solutions to automate, scale-up or virtualize their environments to best fit their business requirements,” said Martin Whittaker, vice president, Systems and Solutions Engineering, Enterprise Servers, Storage and Networking at HP. “Optimizing Red Hat Enterprise Linux on HP ProLiant DL980 systems extends the power of open source to HP Converged Infrastructure, delivering uptime, increased capacity and faster processing speeds.”
Red Hat Enterprise Linux 6.2 delivers significant improvements in resource management and high availability, as well as new features aimed at storage and file system performance and identity management. Red Hat Enterprise Linux 6.2 provides additional capabilities to manage system resources. For service providers or internal IT organizations that deliver applications or hosted services via multi-tenant environments, maximums can be set for CPU time associated with a given application, business process or a virtual machine. This allows for more efficient management of SLAs and enables the ability to implement service priorities, similar to those associated with network Quality of Service (QoS).

When an enterprise deploys its applications to run in a Red Hat Enterprise Linux 6.2 guest hosted by VMware, the applications can now be utilized for High Availability (HA) Add-Ons. This also includes full support for use of GFS2 shared storage file system by the virtual machines. The result is additional deployment flexibility for customers requiring HA within a portion of their virtualized environment, as well as full support for Red Hat Enterprise Linux on the VMware hypervisor.

Red Hat Enterprise Linux 6.2 adds enhancements to storage and file system features including full support of iSCSI extension for RDMA. Now, benefits of low latency and high throughput through a standard SAN implementation based on 10Gb Ethernet are available to even the most demanding storage environments. This allows customers to opt out of expensive Infiniband hardware or other dedicated interconnect fabrics. Other enhancements around file system include delayed meta data logging, asynchronous and parallel file system writes, as well as support for multiple active instances of Samba in a cluster which improves overall throughput and increases availability for large Samba clustered deployments.

Identity Management:-
In Red Hat Enterprise Linux 6.2 provides the administrative tools to quickly install, configure and manage server authentication and authorization in Linux/Unix enterprise environments, while still providing the option to interoperate with Microsoft Active Directory. This enables enterprises to manage Linux infrastructure easily and cost-effectively. Centralized identity management and host-based access control can reduce administrative overhead, streamlines provisioning and improves security.

Performance:- 
Is key to all customers. Red Hat Enterprise Linux 6.2 continues to put an emphasis on accelerating I/O such as network traffic steering to improve network throughput by as much as 30 percent in performance tests conducted by Red Hat and delivering numerous file system enhancements that reduce read-write times and boost overall system utilization.

Red Hat expects to deliver the beta for Red Hat Enterprise Linux 5.8 later this month. Also fully underway is development for Red Hat Enterprise Linux 7, the next major release of Red Hat Enterprise Linux. Red Hat received an outstanding response from all Red Hat subscribers – users and partners – for requested features coming from the recent Red Hat Enterprise Linux 7 Ideas discussion group posted on the Red Hat customer portal. This important feedback allows Red Hat to continue to make Red Hat Enterprise Linux a computing foundation for the next generation of operating system platforms.

For More Information, New Technical Features and Benefits document Click Here



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Red Hat Inc Announced The General Availability Red Hat Enterprise Linux (RHEL) 6.5

Posted by Avik Sarkar On 11/30/2013 03:32:00 am

Red Hat Inc Announced The General Availability Red Hat Enterprise Linux (RHEL) 6.5 

The RHEL 6x series get another important update as Red Hat Inc, the world's leading provider of open source solutions announced the general availability of Red Hat Enterprise Linux 6.5, the latest version of Red Hat Enterprise Linux 6. According to the official press release of Red Hat -RHEL 6.5 expands Red Hat’s vision of providing an enterprise platform that has the stability to free IT to take on major infrastructure challenges and the flexibility to handle future requirements, with an extensive partner and support ecosystem. 
Red Hat Enterprise Linux 6.5 is mainly designed for those who build and manage large, complex IT projects, especially enterprises that require an open hybrid cloud. From security and networking to virtualization, Red Hat Enterprise Linux 6.5 provides the capabilities needed to manage these environments, such as tools that aid in quickly tuning the system to run SAP applications based on published best practices from SAP.“Red Hat Enterprise Linux 6.5 provides the innovation expected from the industry’s leading enterprise Linux operating system while also delivering a mature platform for business operations, be it standardizing operating environments or supporting critical applications. The newest version of Red Hat Enterprise Linux 6 forms the building blocks of the entire Red Hat portfolio, including OpenShift and OpenStack, making it a perfect foundation for enterprises looking to explore the open hybrid cloud.”-said Jim Totton, vice president and general manager of Red Hat Inc. Now lets take a closer look to the main highlights of RHEL 6.5 : 

Securing the Next-Generation Enterprise
Red Hat Enterprise Linux 6.5 continues the push for integrated security functionality that combines ease-of-use and up-to-date security standards into the platform. The addition of a centralized certificate trust store enables standardized certificate access for security services. Also included are tools that meet leading security standards, including OpenSCAP 2.1, which implements the National Institute of Standards and Technology’s (NIST’s) Security Content Automation Protocol (SCAP) 1.2 standard. With these additions, Red Hat Enterprise Linux 6 provides a secure platform upon which to build mission-critical services and applications.

Networking – When Every (Micro)Second Matters
In the financial services and trading-related industries, application latency is measured in microseconds, not seconds. Now, the latest version of Red Hat Enterprise Linux 6 fully supports sub-microsecond clock accuracy over the local area network (LAN) using the Precision Time Protocol (PTP). Precision time synchronization is a key enabler for delivering better performance for high-speed, low latency applications. Red Hat Enterprise Linux 6.5 can now be used to track time on trading transactions, improving time stamp accuracy on archived data or precisely synchronizing time locally or globally. Thanks to other networking enhancements in Red Hat Enterprise Linux 6.5, system administrators now have a more comprehensive view of network activity. These new capabilities enable sysadmins to inspect IGMP (Internet Group Management Protocol) data to list multicast router ports, multicast groups with active subscribers and their associated interfaces, all of which are important to many modern networking scenarios, including streaming media.

Virtualization Enhancements
Red Hat Enterprise Linux 6.5 continues Red Hat’s commitment to improving the overall virtualization experience and includes several improvements that make it a compelling choice for running in virtualized environments. Sysadmins can now dynamically enable or disable virtual processors (vCPUs) in active guests, making it an ideal choice for elastic workloads. The handling of memory intensive applications as Red Hat Enterprise Linux guests has also been improved, with configurations supported for up to 4TB of memory on the Kernel-based Virtual Machine (KVM) hypervisor. The KVM hypervisor also integrates with GlusterFS volumes to provide direct access to the distributed storage platform, improving performance when accessing Red Hat Storage or GlusterFS volumes. Finally, guest drivers have been updated to improve performance of Red Hat Enterprise Linux 6.5 running as a guest on supported third-party hypervisors.

Evolving Ease-of-Use, Storage, and More
As application deployment options grow, portability becomes increasingly important. Red Hat Enterprise Linux 6.5 enables customers to deploy application images in containers created using Docker in their environment of choice: physical, virtual, or cloud. Docker is an open source project to package and run lightweight, self-sufficient containers; containers save developers time by eliminating integration and infrastructure design tasks. Red Hat Enterprise Linux 6.5 stays current with the advancements in Solid-State Drive (SSD) controller interface, introducing support for NVM Express (NVMe)-based SSDs. The NVMe specification aims to standardize the interface for PCIe-based SSDs and its inclusion in Red Hat Enterprise Linux 6.5 positions the platform to support an expanding range of future NVMe-based devices.

Improvements have also been added to improve enterprise storage scalability within Red Hat Enterprise Linux 6.5. It is now possible to configure more than 255 LUNs connected to a single iSCSI target. In addition, control and recovery from SAN for iSCSI and Fibre Channel has been enhanced, and updates to the kexec/kdump mechanism now make it possible to create debug (dump) files on systems configured with very large memory (e.g. 6TB).

Red Hat Enterprise Linux 6.5 makes it easier to track and manage subscription consumption across the enterprise, integrating subscription tracking into existing business workflow. Usability enhancements include support for remote access to Windows clients and servers that use a newer version of the RDP protocol, including Windows 7 and 8 desktops and Windows Server 2012. 

To Download Red Hat Enterprise Linux 6.5 Click Here


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Red Hat Enterprise Linux (RHEL) 6.3 Released & Globally Available

Posted by Avik Sarkar On 6/24/2012 05:41:00 pm

Red Hat Enterprise Linux (RHEL) 6.3 Released & Globally Available

Only six months after the release of RHEL 6.2. Red Hat officially announced the global availability of the next minor release of Red Hat Enterprise Linux operating system platform, Red Hat Enterprise Linux 6.3. Couple of months ago we got the Beta of RHEL 6.3 and with this final release Red Hat has tweaked the enterprise grade Linux distribution to add new capabilities in storage, virtualization, security, developer tools, file systems, scalability and performance.

Highlighted Features :-
  • Developer Tools: In addition to OpenJDK6 support in Red Hat Enterprise Linux 6, the newly introduced OpenJDK7 allows customers running Red Hat Enterprise Linux 6.3 to develop and test with the latest version of open source Java. The Red Hat Developer Day is scheduled for June 26th at the 2012 Red Hat Summit & JBoss World. More about this and other capabilities will be presented, including the Red Hat Enterprise Linux toolset (updated GCC), performance optimization, thread programming and NUMA. For more information about developer day, please visit here.
  • Virtualization: Red Hat Enterprise Linux 6.3 helps smooth migration to a virtualized environment. This is achieved with the help of new Virt-P2V tools that can easily convert a Red Hat Enterprise Linux or Microsoft Windows system running on physical hardware to run as KVM guests. This release implements a more robust mechanism to protect data associated with defunct virtual machines. The method by which virtual disk images are securely wiped has been enhanced to allow greater security and stronger compliance with Payment Card Industry Data Security Standards (PCI-DSS).
  • Security: Users can now use two-factor authentication for securely accessing their Red Hat Enterprise Linux environment. This type of authentication mechanism is more secure than simple password based authentication. Two-factor authentication is being adopted into enterprise environments and is often referenced in industry standards. Red Hat Enterprise Linux 6.3 also includes advanced encryption capabilities so data blocks can be encrypted in parallel by taking advantage of underlying multi-processor capabilities. This is supported by the introduction of AES-CTR (Advanced Encryption Standard Counter Mode) cipher for OpenSSH. AES-CTR is well suited for high-speed networking environments.
  • Scalability: Red Hat Enterprise Linux 6.3 continues to test the outer bounds of scalability for an operating system platform by increasing the maximum number of virtual CPUs (vCPUs) per guest to 160 from 64. This is significantly higher than the 32 vCPU per guest limit for VMware ESX 5.0. The maximum supported memory configuration for KVM guests has also been increased from 512GB to 2TB.
  • File Systems: File system improvements include O_DIRECT support in FUSE (File system in user space). When enabled, all FUSE reads and writes go directly to storage, bypassing the server cache. This capability can lead to more consistent response times and predictable access to data by multiple accessors for certain use-cases, including database writes and deduplication. GFS2 (shared storage file system) can now read and write data to the disks faster than in previous releases for certain use-cases. In addition, file system check utilities for GFS2 can now be used to check the integrity of the older GFS1 file system.
  • Storage: The Logical Volume Manager (LVM) now provides support for RAID levels 4, 5, and 6 to simplify overall storage administration by consolidating all management functions, such as creating and re-sizing volumes, deploying RAID, and taking snapshots into a single interface. It is now possible to deploy Red Hat Enterprise Linux 6 as a FCoE based storage target server providing the high level of reliability and performance available with native Fibre Channel but at a significantly lower cost. This feature complements the FCoE Initiator support that was delivered in Red Hat Enterprise Linux 6.0.
  • Subscription Management: With Red Hat Enterprise Linux 6.3, by default customers can use Red Hat Subscription Management (SAM), an enhanced subscription management capability using X.509 certificates that allows customers to effectively manage subscriptions locally and report on subscription distribution and utilization. This helps facilitate compliance, upgrades, and long-term planning. Customers register their systems using Red Hat Subscription Manager to the Red Hat award-winning customer portal or an instance of Red Hat Enterprise Linux SAM. Customers who used RHN Classic subscription management with prior releases of Red Hat Enterprise Linux, can continue to use it or migrate to Red Hat Subscription Management.



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Red Hat Enterprise Linux 7 Beta Arrives! Download Now And You Can Win $500

Posted by Avik Sarkar On 12/20/2013 12:55:00 am

Red Hat Enterprise Linux (RHEL) 7 Arrived With Expanded Container Support, Performance Profiles, XFS As the Default Filesystem & Many More. 
We have just spent a less than a month time after the release of Red Hat Enterprise Linux 6.5 made available globally, yet again the American multinational software company, leading the world for open-source software has announced the availability of a first public beta release of Red Hat Enterprise Linux (RHEL) version 7. Based on Fedora 19 and the upstream Linux 3.10 kernel, Red Hat Enterprise Linux 7 will provide users with powerful new capabilities that streamline and automate installation and deployment, simplify management, and enhance ease-of-use, all while delivering the stability that enterprises have come to expect from Red Hat. This further solidifies Red Hat Enterprise Linux's place as the world's leading Linux platform and a standard for the enterprise of the future. Whether rolling out new applications, virtualizing environments or scaling the business with cloud, Red Hat Enterprise Linux 7 delivers the keystone to IT success. The beta release of Red Hat Enterprise Linux 7 adds value to new and existing IT projects across industries by adding key capabilities to improve critical but often cumbersome IT tasks like virtualization and storage while offering a clear pathway to the open hybrid cloud. In their official Red Hat Enterprise Linux YouTube channel, Red Hat posted a short video where you can hear what the team at Red Hat has to say about the next-generation of the world’s leading Linux platform.

Red Hat Enterprise Linux 7 Beta showcases hundreds of new features and enhancements, including: 
  • Linux Containers - Enabling applications to be created and deployed in isolated environments with allocated resources and permissions.
  • Performance Management – Using built in tools, you can optimize performance out-of-the-box.
  • Physical and Hosted In-place Upgrades - In-place upgrades for common server deployment types are now supported. Additionally, virtual machine migration from a Red Hat Enterprise Linux 6 host to a Red Hat Enterprise Linux 7 host is possible, without virtual machine modification or downtime.
  • File Systems – File systems continue to be a major focus of development and innovation.
    • XFS is now the default file system, supporting file systems up to 500TB
    • ext4 file systems are now supported to 50TB and include block sizes up to 1MB
    • btrfs file systems are now available to test
  • Networking – Enhanced networking configuration and operation. Added support for some of the latest networking standards, including:
    • 40Gb Ethernet support
    • Improved channel bonding
    • TCP performance improvements
    • Low latency socket poll support
  • Storage – Expanded support for enterprise level storage arrays. Improved scalable storage stack for deployments that are less disk intensive. Improved storage management for heterogeneous storage environments.
  • Windows Interoperability – Bridge Windows™ and Linux infrastructure by integrating SAMBA 4.1 with existing Microsoft Active Directory domains. Or, deploy Red Hat Enterprise Linux Identity Management in a parallel trust zone with Active Directory.
  • Subsystem Management – Simplified configuration and administration with uniform management tools for networking, storage, file systems, performance, identities and security. Leveraging the OpenLMI framework, enables use of scripts and APIs to automate management.
To know deeply about the hot features and enhancement of RHEL 7 beta 1, click here. I am quite sure that, after going through with the above description, all of you are very much excited to grab this brand new beta of RHEL 7. Like the previous beta release, this time also The Red Hat Enterprise Linux 7 beta has been made available to Red Hat customers, partners, and members of the public. For further information and to access the beta click here. Last but not least, with this release Red Hat also calls for an very interesting competition, where you can participate & win $500 while telling Red Hat, what interests you most in RHEL 7 beta. So what are you waiting for, lets download RHEL 7 and explore it. 

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Red Hat Announced Beta of Red Hat Enterprise Linux (RHEL) 6.3

Posted by Avik Sarkar On 4/28/2012 02:56:00 pm

Red Hat Announced Beta of Red Hat Enterprise Linux 6.3
Just over four months after the release of Red Hat Enterprise Linux (RHEL) 6.2, developer at RedHat has made a beta of version of RHEL 6.3 available. This beta includes a broad set of updates to the existing feature set and also provides rich new functionality particularly in the areas of virtualization, scalability, storage, file systems, and security. As always, the Red Hat Enterprise Linux 6.3 beta delivers new hardware enablement made possible by our strong relationships with our strategic hardware partners. This beta release has been designed for optimized performance, scalability, and reliability to cater to the diverse workloads running in physical, virtual and cloud environments.

Key Features in the Red Hat Enterprise Linux 6.3 Beta:-
Virtualization-
  • A new tool called Virt-P2V that facilitates the conversion of physical Windows or Red Hat Enterprise Linux systems into virtual images to be deployed as KVM guests inside Red Hat Enterprise Linux or Red Hat Enterprise Virtualization.
  • Stronger compliance with Payment Card Industry Data Security Standards (PCI-DSS), including the ability to perform secure wipes of virtual machine disks.
  • The ability to perform live volume resizing, improving the overall availability of virtualized guests.
Scalability-
  • The maximum number of virtual CPUs (vCPUs) has been increased from 64 to 160, which lets you run larger CPU-intensive workloads on the Red Hat Enterprise Linux platform. VMware ESX 5.0 currently support 32 vCPUs.
  • The maximum supported memory configuration for KVM guests has been increased from 512GB to 2TB.
File Systems-
  • GFS2 enhancements that create faster read-write capabilities for specific use cases.
  • Support of O_Direct in FUSE (Filesystem in User Space), which can provide improved performance for certain workloads.
  • Simplified configuration and administration for the file system. Integration of automount capability with System Security Services Daemon (SSSD) provides centralized management of configuration data and the ability to improve performance through caching and load balancing. (This feature is a Technology Preview.)
Storage-
  • Red Hat Enterprise Linux 6.3 provides full support for Fibre Channel over Ethernet (FCoE) Target. This feature, which was previously provided as a Technology Preview, allows customers to present their Red Hat Enterprise Linux servers as FCoE storage devices. This feature complements the FCoE Initiator support that was delivered in Red Hat Enterprise Linux 6.0.
  • The Logical Volume Manager (LVM) now provides support for RAID levels 4, 5, and 6. (Previously, support for these RAID levels was provided through the MD subsystem.) This expanded LVM RAID support simplifies overall storage administration by consolidating all management functions, such as creating volumes, resizing volumes, deploying RAID, taking snapshots, etc., into a single interface. (This feature is a Technology Preview.)
  • The LVM now provides the ability to create thin provisioned logical volumes. Previously, storage was allocated when the volume was created, and needed to be monitored for space consumption and expanded manually. In Red Hat Enterprise Linux 6.3, storage is allocated as required, allowing volumes to expand up to the requested size on demand without intervention. (This feature is a Technology Preview.)
Security-
  • Availability of a two-factor authentication mechanism, enhancing the overall security available to lock down Red Hat Enterprise Linux environments and enabling compliance with industry standards such as PCI-DSS.
  • Expansion of the Advanced Encryption Standard (AES) to provide particular benefits for system performance on multi-processor machines.
Identity Management-
  • With native support for netgroups and the services map in System Security Services Daemon (SSSD), Red Hat Enterprise Linux servers can be integrated into centralized systems -- such as Active Directory -- to manage system users.
  • The addition of an automembership plug-in streamlines the administration of new users and hosts when they are added into the Identity Management system by automatically placing them into a predefined set of groups, speeding user and host provisioning.
  • Performance improvements through session data caching, which lowers the overall load on authentication servers.
Hardware Enablement-
  • Software bandwidth management for USB 3.0 for select Intel platforms is now available.
  • Compiler optimization for Intel Xeon E5 processor family, which improves the result of string operations, is now included.
  • Improvements to memory and I/O breakpoint execution operations within compiler tools are now included.
Developer Tools-
  • With the introduction of OpenJDK 7, customers can develop and test with the latest version of open source Java.
To Download Red Hat Enterprise Linux 6.3 Click Here

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Red Hat Enterprise Linux 6.4 Beta Released & Available For Download

Posted by Avik Sarkar On 12/08/2012 05:56:00 pm

Red Hat Enterprise Linux 6.4 Beta Released & Available For Download 

Red Hat the global leader in open source solutions released another update of its enterprise Linux (RHEL Version 6). Since Red Hat Enterprise Linux has been released, we have got several updates, including three beta release and three final release (RHEL 6.1, RHEL 6.2 & RHEL 6.3). Now the American software company added another beta, that is RHEL 6.4 and made it available for its customers. The beta release includes a broad set of updates to the existing feature set and provides rich new functionality in the areas of identity management, file system, virtualization, and storage as well as productivity tools. In their release note the RHEL Team said that -through collaboration with partners, customers and the open source community, we are committed to delivering technology that is tested and stable – including in the beta phase of development. Red Hat Enterprise Linux 6.4 demonstrates this commitment and has been designed for optimized performance, stability and flexibility to cater to today’s diverse workloads running in physical, virtual and cloud environments.

Key New Features & Enhancement :-
  • Identity Management
System Security Services Daemon (SSSD) enhancements improve the interoperability experience with [Microsoft Active Directory] by providing centralized identity access control for Linux/Unix clients in a heterogeneous environment.

  • File system
pNFS (Parallel NFS) client (file layout only) remains in technology preview, however now delivers performance improvements with the addition of Direct I/O for faster data access. This drives particular performance benefits for I/O intensive use cases including database workloads.

  • Virtualization
Red Hat Enterprise Linux 6 now includes the Microsoft Hyper-V Linux drivers, which were recently accepted by the upstream Linux community, improving the overall performance of Red Hat Enterprise Linux 6 as a guest on Microsoft Hyper-V.
Installation support for VMware and Microsoft Hyper-V para-virtualization drivers. This new feature enhances the user deployment experience of Red Hat Enterprise Linux as a guest in either of these virtualization environments.
In this release, KVM virtualization virtio-scsi support, a new industry storage architecture, provides industry leading storage stack scalability.

  • Management
The use of swap functionality over NFS enables more efficient read/write tradeoffs between local system memory and remote disks. This capability increases performance in very large, disk-less server farms seen in ISP and Web hosting environments.
Enhancement in c-groups delivers the ability to migrate multi-threaded applications without errors.
Optimized perf tool for the latest Intel processors

  • Storage
New system log features identify mapping from block device name to physical device identifier – allowing an administrator to easily locate specific devices as needed.

  • Productivity Tools
Microsoft interoperability improvements with Microsoft Exchange and calendar support in Evolution. Productivity functions, such as calendar support with alarm notification and meeting scheduling is improved.
Customers such as animation studios and graphic design houses now have support for the newer Wacom tablets.


Through this next beta release of Red Hat Enterprise Linux 6, Red Hat team is proud to deliver the highest quality open source enterprise platform. To download the beta release of Red Hat Enterprise Linux 6.4 click Here




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Red Hat Enterprise Linux (RHEL) 5.8 Released

Posted by Avik Sarkar On 2/23/2012 06:44:00 pm

Red Hat Enterprise Linux (RHEL) 5.8 Released 

Red Hat announced the general availability of Red Hat Enterprise Linux 5.8 operating system with new and improved functionality for enhanced performance, flexibility, and security. The release of Red Hat Enterprise Linux 5.8 is part of the ongoing value delivered to customers during the recently-extended 10 year life cycle. With this release Red Hat has provided customers with the eighth "minor release" of Red Hat Enterprise Linux (RHEL) 5.
Red Hat Enterprise Linux 5.8 Include:-

Virtualization
  • KVM scalability enhancements increasing the maximum supported virtual guest size from 128 to 256 virtual CPUs furthering the reach of virtualization deployments to large-scale workloads.
  • KVM enhancements include improved guest boot times and improved clock and timer support. The KVM hypervisor has updated real time clock (RTC) support to improve the performance of Red Hat Enterprise Linux 6 guests on Red Hat Enterprise Linux 5 KVM hosts.
  • Additional KVM improvements increase the manageability and stability of KVM hosts and Red Hat Enterprise Linux guests. Many of these enhancements are in support of Red Hat Enterprise Virtualization 3.0.
  • Xen enhancements provide improved guest performance, improved logging for debug, and virtual disk re-sizing while a guest is running.

Hardware Support and Streamlined Installation
  • Support for Power Management Quality of Service (QoS) provides automatic power management at the device level for managing latency and throughput based on QoS needs. During critical production windows, system administrators can enforce a high-performance, low-latency mode.
  • New iotop support enables the monitoring of I/O resources, such as storage devices, at the process level, providing insight into potential performance issues.
  • PCI-e 3.0 enablement provides support for new and emerging PCI-e 3.0 adapters.
  • Network, storage and graphic driver enhancements for recent hardware.
  • The configuration of IP over Infiniband (IPoIB) adapters is now supported by the system installer, making installation of Infiniband adapters easier.

Security Management
  • OpenSCAP (Open Security Content Automation Protocol) support is now compliant with the SCAP 1.1 (Security Content Automation Protocol) specification, the most recent standard framework defined by National Institute of Standards and Technology (NIST) for creating a standardized approach for maintaining secure systems.
  • Red Hat Enterprise Linux 5 has been tested to the United States Government Configuration Board (USGCB) baseline and now meets the USGCB recommendations for government agencies following USGCB guidance for secure configuration policies.


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Red Hat Enterprise Linux 6.1 is giving Some Cool Features

Posted by Avik Sarkar On 5/21/2011 12:43:00 pm

 

Upgrades include a technology preview of Enterprise Identity (IPA) services, based on the open-source FreeIPA project. 

Open-source solutions specialist Red Hat announced the general availability of Red Hat Enterprise Linux 6.1, the first update to the platform since the delivery of Red Hat Enterprise Linux 6 in November 2010. Linux 6.1 enhancements provide customers with improvements in system reliability, scalability and performance, coupled with support for upcoming system hardware.

Enterprise Linux 6.1 also delivers patches and security updates, while maintaining application compatibility and OEM/ISV certifications.
In addition to performance improvements, Enterprise Linux 6.1 provides technology updates, including additional configuration options for advanced storage configurations with improvements in FCoE; Datacenter Bridging and iSCSI offload; enhancements in virtualization, file systems, scheduler, resource management and high availability; and technologies that enable smoother enterprise deployments and tighter integration with heterogeneous systems.
Other upgrades include a technology preview of Red Hat Enterprise Identity (IPA) services, based on the open-source FreeIPA project; support for automatic failover for virtual machines and applications using the Red Hat High Availability Add-On; integrated developer tools that provide the ability to write, debug, profile and deploy applications without leaving the graphical environment; and improvements to network traffic processing to leverage multiprocessor servers that are becoming increasingly common.
IT research firm IDC recently conducted a study that evaluated organizations that are heavily standardized on Red Hat Enterprise Linux, and compared those organizations with others that had a mixture of Linux distributions in use, and organizations that were heavily penetrated by non-paid Linux distributions. The outcome of the study found that there is demonstrable business benefit associated with having professional support for an operating system, compared with a do-it-yourself approach. Al Gillen, program vice president of system software at IDC, said the real benefits came from lower IT staff costs and reduced end-user downtime.
“Building on our decade-long partnership to optimize Red Hat Enterprise Linux for IBM platforms, our companies have collaborated closely on the development of Red Hat Enterprise Linux 6.1,” said Jean Staten Healy, director of cross-IBM Linux and open virtualization. “Red Hat Enterprise Linux 6.1 combined with IBM hardware capabilities offers our customers expanded flexibility, performance and scalability across their bare metal, virtualized and cloud environments. Our collaboration continues to drive innovation and leading results in the industry.”

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Red Hat Enterprise Linux (RHEL) 6.2 Beta Released

Posted by Avik Sarkar On 10/07/2011 05:28:00 pm

 
Beta for Red Hat Enterprise Linux 6.2 is now available. This beta includes a broad set of updates to the existing feature set and also provides rich new functionality particularly in the areas of performance and scaling, identity management, high availability, advanced storage, and networking. As always, this beta delivers new hardware enablement made possible by our strong relationships with our strategic hardware partners. This beta release has been designed for optimized performance, scalability and reliability to cater to the diverse workloads running in physical, virtual and cloud environments.
The key benefits for organizations working with this beta for Red Hat Enterprise Linux 6.2 are operational efficiency realized through enterprise management and monitoring, along with enhanced business agility through additional support for virtualized and clustered deployments.

Key functionality in this beta for Red Hat Enterprise Linux 6.2 are as follows:-

Performance and Scaling:-
  • Kernel-level optimizations implemented in the process scheduler, networking, virtualization, and I/O subsystems.
  • Faster creation of ext4 file systems and improved response times in XFS for certain workloads.
  • Improved CPU controller scalability and enhanced resource management features to set processor utilization ceilings.
Identity Management:-
  • Centralized identity management for the flexible management of users, roles, policies, and authentication services.
  • New capabilities for the unification of Kerberos ticketing, DNS naming, user and group ids, and Linux systems policies into a single service.
High Availability:-
  • Support for Red Hat Enterprise Linux 6 guests on VMware® hosts and comprehensive support for the GFS2 shared storage file system have been added to the High Availability Add-on Product, creating a more tightly integrated environment.
  • Full support for the UDP-unicast protocol which reduces administration overhead, resulting in easier cluster deployment.
Advanced Storage:-
  • World Wide Name (WWN), or World Wide Identifier (WWID), for storage devices making it easier to identify them during installation for users utilizing Storage Area Networks (SAN) and other advanced network topologies.
  • Within production environments using infiniband – where high throughput and low latency are key requirements – Red Hat Enterprise Linux can now be purposed as an iSCSI initiator and storage server.
Networking:-
  • Transmit Packet Steering (XPS) capabilities which improve network packet transmission throughput by 30%.

To See the Official Release Note of Red Hat Click Here

For Download Click Here

-News Source (RedHat)


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Linux Kernel 3.0

Posted by Avik Sarkar On 6/02/2011 03:57:00 pm



Last week began with speculation about a new kernel version number that ultimately resulted in the first big number change for Linux in more than a decade. Along the way, we also saw new Linux distribution releases, including Fedora 15 and the first beta of Red Hat Enterprise Linux 5.7.

1. Linux 3.0

Make no mistake about it, after two decades of being the leader of the Linux community, Linus Torvalds still makes the big decisions.
This week, Torvalds made the huge decision of starting a new numbered version of Linux, advancing the kernel to Linux 3.0, with a first release candidate debuting early Sunday. The Linux 3.0 kernel came after a week of discussion, which began with Torvalds first mentioning that he was considering advancing the number to Linux 2.8, instead of having a Linux 2.6.40 kernel release. "The voices in my head also tell me that the numbers are getting too big," Torvalds wrote in a mailing list posting. By the end of the week, Torvalds was advocating for a 3.0 release, as Linux is now entering its third decade. While big number version changes can often represent binary compatibility or big feature change issue with a software project, that's not the case with Linux 3.0. The 3.0 nameplate is a time-based thing, and it isn't about new features. Considering Linux 2.0 came out in 1996 and the more recent 2.6 branch began in 2003, the big number change is a long time coming for Linux. While some software projects, like Google's Chrome, change major version numbers every three months, Linux has iterated on the 2.6.x branch for more than seven years. The change to 3.0 may seem a bit arbitrary, but it makes sense on many levels. The time has come for a number change as Linux enters its third decade.

2. Fedora 15

This past week also marked the debut of Fedora 15, codenamed 'Lovelock.' While Linux 3.0 isn't about new features, Fedora 15 is about features, most notably the GNOME 3.0 desktop. Fedora 15 is the first of the big Linux distributions to integrate GNOME 3 and its associated GNOME Shell user interface. Fedora 15's GNOME 3 desktop stands in contrast to the Unity desktop that rival distribution Ubuntu debuted in April. While Fedora is a big backer of GNOME Shell, the project also realizes it's not for everyone and includes fallback mechanisms for older hardware as well as other desktop options, including KDE, Xfce and LXDE. Time will tell whether users prefer GNOME Shell to Unity or if they end up rejecting both desktops in favor of something else.

3. Linux Mint 11

For Ubuntu users that don't want Unity and don't want to move to Fedora (or something else), there is Linux Mint. Over the past couple of years, Mint has emerged as a community favorite alternative to Ubuntu. Based on Ubuntu, Mint takes the best of Ubuntu and aims to make it even easier to use. For GNOME users, Mint has elected not to use either GNOME shell or Unity, providing users with a more traditional user interface. Given the backlash in some corners against Unity on Ubuntu, it's likely that Linux Mint 11 will attract more than its fair share of Ubuntu 11.04 refugees. Will those former Ubuntu users stick with Mint over time? Considering Mint is based on Ubuntu, that's a bet that doesn't carry too much risk.

4. Red Hat Enterprise Linux 5.7

No, it's not a major new version number of Red Hat's Enterprise Linux (RHEL), but RHEL 5.7 is still an important release. This past week, Red Hat released the first beta of RHEL 5.7 with new driver and stability updates. RHEL 5.0 first came out in 2007 and has since been superseded by RHEL 6, which came out at the end of 2010. There is a class of users that don't magically switch overnight to major new releases (if ever) and that's why RHEL 5.7 is important. Looking beyond the usual set of driver updates, Red Hat (NYSE: RHT) also packed in at least one new feature too. RHEL 5.7 supports OpenSCAP, which is an open source implementation of the Security Content Automation Protocol (SCAP) framework for creating a standardized approach for maintaining secure systems. While RHEL 5.7 isn't a major new release, for Red Hat's RHEL 5 customer base, it's a solid update that will refresh their installed servers.

5. Puppy Linux

Linux users come in all shapes and sizes. While big vendors like Red Hat target mission-critical enterprise systems, other distros, like Puppy Linux, serve a different audience. Wary Puppy Linux is a minimal Linux distributions that requires less hardware resources than other distros. This makes it ideal for older hardware that other distros (and any other OS) would deem to be obsolete. This past week Wary Puppy Linux 5.1.2 was released with the promise of even better support for older hardware.


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RHEL 5.7 adds OpenSCAP

Posted by Avik Sarkar On 5/28/2011 10:12:00 pm


With all the excitement around Red Hat Enterprise Linux 6.1 last week, it's important to remember that most RHEL users are still likely on RHEL 5. RHEL 5 debuted in March of 2007 and has been updated with 6 incremental updates over the last four years. The last major update, RHEL 5.6 came out in January of 2011. With RHEL 6.x now in market, I would have guessed that RHEL 5 at this point would be just about bug, stability and driver updates, but that's not the case. Red Hat is still adding FEATURES to this distro. In RHEL 5.7, which is now in Beta, Red Hat is adding support for OpenSCAP which is a big win for security. OpenSCAP is an open source implementation of the Security Content Automation Protocol (SCAP) framework for creating a standardized approach for maintaining secure systems. Red Hat's Fedora community Linux distro has included OpenSCAP since the Fedora 14 release in October of 2010. Typically it takes longer for a Fedora technology to land in RHEL, but OpenSCAP is just one of those things that makes so much sense (and clearly is already enterprise ready) that Red Hat is electing to get it into RHEL now -- at least in beta. RHEL 5.7 also provides improved capabilities for the Xen Hypervisor, which is not something that Red Hat has continued into RHEL 6.  




According to the release notes for RHEL 5.7:

  • The performance of Xen guests in 32-bit domains is improved.
  • The maximum amount of disks that can be attached to a Xen guest has been increased from 100 to 256.
  • The time needed to boot Xen guests is reduced.
  • Xen guests now support up to 4 serial ports.
  • xz compression support is now available in Xen pygrub.
All good news for RHEL 5.x users that intend for whatever reason  to stick with the platform instead of moving to RHEL 6. That's not to say that RHEL 6.x isn't more robust overall, but hey big mission critical systems aren't things that are easily migrated from one version to another.

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LibreOffice Addresses Multiple Heap-based Buffer Overflow Vulnerability (CVE-2012-2665)

Posted by Avik Sarkar On 8/05/2012 02:17:00 am


LibreOffice Addresses Multiple Heap-based Buffer Overflow Vulnerability (CVE-2012-2665)

Just a few weeks after releasing the LibreOffice 3.5.5, The Document Foundation has confirmed that security holes in earlier versions of the open source LibreOffice, that could be exploited to execute arbitrary code with the privileges of the active user. According to the security advisories of LibreOffice, dubbed CVE-2012-2665 - "Multiple heap-based buffer overflow flaws were found in the XML manifest encryption tag parsing code of LibreOffice. An attacker could create a specially-crafted file in the Open Document Format for Office Applications (ODF) format which when opened could cause arbitrary code execution." Users are recommended to upgrade to 3.5.5 or 3.6.0 to avoid this flaw.  Red Hat released updated OpenOffice.org and LibreOffice packages for both Red Hat Enterprise Linux version 5 and Red Hat Enterprise Linux version 6. Users are advised to upgrade to these updated packages, which contain backported patches to correct the issues, Red Hat said in three security advisories published on Tuesday. Linux vendor Novell released updated LibreOffice packages for SUSE Linux Enterprise Desktop 10 and a LibreOffice update is also available for Ubuntu 12.04 (Precise Pangolin)






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CentOS 6 is Now Available

Posted by Avik Sarkar On 7/11/2011 05:42:00 pm


Seven months after the release of Red Hat Enterprise Linux (RHEL) 6.0, the CentOS developers have announced the release of CentOS 6.0. The RHEL 6.0 clone is currently only available as a DVD image for x86-32 and x86-64 systems; however, Live CDs are reportedly in preparation and the developers have also said that they plan to issue a "Minimal Install CD" in the coming days. They also intend to provide information on a "LightWeightServer (LWS) CD" that, similar to the "CentOS 4 Server CD", will contain the key components to set up a server.
Updating from CentOS 4 or 5 to version 6 is not recommended. Until the release of CentOS 6.1, the project plans to provide the security updates Red Hat integrated into RHEL 6.1, as well as those that have been issued since its release, via a "continuous release repository"; further details are to follow within 48 hours of the release of CentOS 6.
CentOS 6.0 is the last of the three most popular distributions whose developers take the RHEL source packages, substitute the protected components (for example, the Red Hat logos), and after recompiling assemble the whole thing into a distribution that is said to be fully compatible with the original. Oracle released its Oracle Linux 6.0 in February, and the Scientific Linux (SL) project released its identically named clone in March. In mid-May, Red Hat released the first minor update to RHEL6, version 6.1. Oracle released a clone of this version in early June; the Scientific Linux developers are still working on theirs. The CentOS developers have not indicated a release date for CentOS 6.1.

To See the Release Note Click HERE
Download: i386 | x86_64


-News Source (The H)

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Red Hat to hand off Enterprise Linux 6.1 RC1 at summit this week

Posted by Avik Sarkar On 5/05/2011 10:49:00 am


Red Hat’s annual summit is off to a hot start.
Besides free beer and wine before the opening keynote, the Linux leader announced it will hand off a release candidate of Red Hat Enterprise Linux 6.1 to select partners during the summit this week.
General availability for the version 6 update is expected in the “coming weeks, ” the company announced today.  The first beta was made available in March.

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Jadavpur University Official Website is Vulnerable to Sql Injection

Posted by Avik Sarkar On 3/31/2013 03:20:00 pm

Jadavpur University Official Website is Vulnerable to Sql Injection 

An ethical hacker from India named Chirag Singh have figured out serious loopholes in the official website of Jadavpur University -one of the most renowned and prestigious university of India. Chirag find blind Sql injection vulnerability which can be exploited by malicious purpose in order to harm the website and gain access. From the vulnerability report submitted by the hacker, it has been found that the web-server of Jadavpur University is using Red Hat Enterprise Linux 5 (Tikanga) where the web application technologies are Apache 2.2.3 and PHP 5.1.6; along with the back-end database is PostgreSQL. The hackers also managed to dump 11 database with more than 215 tables as shown in the picture below 

This issue has already been reported to the concern person and the webmaster of Jadavpur University, and due to security and privacy we are not exposing and mention the vulnerable link and dumped database.







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