Friday 28 November 2014

Commandments of RHEL 7

 RedHat breathed new life to the Red Hat Enterprise Linux Operating system there by giving birth to enthralling RHEL 7 which transcends the boundaries of an OS with vessels for containerized applications. Hence RHEL 7 is no longer just a simple OS but an abstracted component in the larger RedHat ecosystem. For a flawless understanding of the significant features of RHEL 7 it would be better to go through the following 10 Red commandments 
• RHEL 7 offers an increased support for hosting Virtualized Windows server Edition than RHEL 6 and with an updated SAMBA 4, RHEL 7 is almost a member of Microsoft network 
• RHEL 7 has the responsibility of an OS subscription model which is tuned for a stable business deployment. It prevents instance of being out of support or highly re configured.
• RHEL 7 is a huge pile of code, running 4.3GB in the DVD ISO 
• Red Hat’s support of Linux containers (LXC) which helps the users to deploy Type-2, OS-based virtualization, rather than Type-1 bare metal hypervisors. LXC allows the container to be both lightweight and highly isolating.
• RHEL 7 support project atomic which allows moving a workload from one OS to another as transparent to workload. This becomes the job of relationship stack components especially open stack. Thus once an app tests successfully as an isolatable container instance, it can become a package, much as software appliances are found and deployed.
• RHEL 7 now uses the xfs file system instead of ext4 by default. This means that RHEL can handle extremely large file systems, as much as 8 exbabyte.
• RHEL 7 offers a tighter link to Active Directory. Hence those looking for a cross platform compatibility with Windows active directory receive new Kerberos support that allow them to do this.
• RHEL 7 is easier to install and deploy: The RHEL 7 kernel update to 3.20 is similar to Canonical’s implementation. In terms of distribution RHEL7 slightly easier to deploy on bare metal, and about the same on VMware, Hyper-V, and Citrix XenServer. 
• RHEL 7 is built for business environment at the installation time one should choose from several type of base environment like minimal, infrastructure server, file and print server, basic web server, virtualization host etc.
• RHEL 7 in peppy in terms of performance Gnome is very dynamic. And optimization of varying roles could be well documented. RedHat can increase output through a new feature of network port teaming.

Thursday 20 November 2014

Red Hat Cloud Infrastructure 5 Now Available

Gordon Tillmore, Red Hat
Earlier this week, we announced the release of Red Hat Cloud Infrastructure 5.  Customers can use  this recent release to move towards open hybrid cloud working alongside existing infrastructure investments, and allowing for workload portability from a customer’s private cloud to Amazon EC2, or the reverse, if desired.   The product is our Infrastructure-as-a-Service solution providing:
  • a flexible and open solution to build out a centrally managed heterogeneous virtualization environment,
  • a private cloud for traditional workloads based on virtualization technologies, and
  • a massively scalable OpenStack-based cloud for cloud-enabled workloads
Version 5 -an important release for Red Hat Cloud Infrastructure
Version 4 already included three tightly integrated Red Hat technologies: Red Hat CloudForms, an award winning Cloud Management Platform (CMP), Red Hat Enterprise Virtualization, a full-featured enterprise virtualization solution, and Red Hat Enterprise Linux OpenStack Platform, our fully supported, enterprise grade OpenStack offering.  Red Hat Enterprise Linux has also been a key ingredient, serving as the basis for Red Hat Enterprise Virtualization and Red Hat Enterprise Linux OpenStack Platform, as well as a guest operating system at the tenant layer. And now, with Red Hat Cloud Infrastructure 5, Red Hat is introducing Satellite 6 to it’s award winning cloud infrastructure. Satellite 6 is accessible with no extra cost, to help organizations better manage the lifecycle of their cloud infrastructure.

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With Red Hat Satellite  customers will have a lifecycle management solution that can significantly simplify and reduce the cost of managing virtual or private cloud infrastructures. Satellite provides systems lifecycle management  from the physical infrastructure itself to tenant workloads.  It can provision, update, and if necessary retire Red Hat Enterprise Virtualization and Red Hat Enterprise Linux OpenStack Platform hosts.  It can also deploy and configure Red Hat Enterprise Linux guests as opposed to simply provisioning empty virtual machines.

If you have RPM-based workloads, Satellite can be used to provision a virtual machine or instance containing your application to Red Hat Enterprise Virtualization, VMware vSphere,  Red Hat Enterprise Linux OpenStack Platform, or even Amazon EC2.  The inclusion of Satellite 6 in RHCI gives cloud operators and virtual infrastructure administrators greater control of their hosts and provides greater levels of automation for guest virtual machines and instances for tenants.

Satellite provides a variety of other lifecycle related benefits as well including the ability to work with CloudForms to recognize an out of date machine and automatically patch and update it as well as the ability to manage drift using the Puppet configuration management engine.  It can also be leveraged with the Red Hat Enterprise Linux OpenStack Platform Installer for faster deployments and controlled updates to Red Hat Enterprise Linux OpenStack Platform, and detailed inventory and Red Hat Enterprise Linux subscription reporting.
To learn more, we invite you to attend a webinar on November 19 entitled “Building and Managing a Hybrid Cloud with Red Hat Cloud Infrastructure.”  The webcast will feature IDC Senior Analyst Gary Chen and Red Hat Product Manager James Labocki.

Wednesday 5 November 2014

Prepare for the Red Hat Certified Engineer exam (EX300)

During the 4-day course, students will work at their own pace through the complete set of labs from both the RHCSA (Red Hat Certified System Administrator) Rapid Track course (RH199) and Red Hat System Administration III (RH254). The RHCE Certification Lab course includes a few instructor lectures designed to review key technologies such as systemd, firewalld, and IPv6. For the classroom and virtual classroom versions of this course, an instructor will be available throughout the week to assist students as they work through the labs.
Note: This version of the course includes the Red Hat Certified System Administrator (RHCSA) EX200 and Red Hat Certified Engineer (RHCE) EX300 exams on the final day of the course.

Course content summary

  • Managing and troubleshooting systemd services during the boot process
  • Network configuration and basic troubleshooting
  • Managing local storage, creating and using file systems
  • Firewall management with firewalld
  • Automating installation of Red Hat Enterprise Linux® using kickstart
  • Manage SELinux settings
  • Using NFS and Samba shared filesystems
  • Network port security and link aggregation
  • iSCSI initiator and target configuration
  • Domain Name System (DNS) troubleshooting and caching name server
  • Providing Network File System (NFS) and Server Message Block (SMB) file servers
  • Apache HTTPD web server management
  • MariaDB SQL datbase configuration
  • Postfix Simple Mail Transfer Protocol (SMTP) nullclient for servers
  • Bash scripting for automation