Using Hooks in Red Hat Enterprise Virtualization

As a Solutions Architect, I enjoy creating and adding custom configurations to my Red Hat Enterprise Virtualization(RHEV) environment using a feature called hooks. A hook is a custom script that executes at a certain point during a RHEV event. You can attach scripts to several events. To see the full list of RHEV hooks, do a directory listing of “/usr/libexec/vdsm/hooks” on a RHEV hypervisor and you will see the below list.

 

Red Hat at DockerCon 16 in Seattle

If you’re heading to DockerCon 16 next week in Seattle, connect with us to see why Fortune 500 organizations trust Red Hat for enterprise deployments. Red Hat subject matter experts will be onsite to walk you through real-world use cases for securely developing, deploying and managing container-based applications. 

Attend the State of Container Security Session

Join two of Red Hat’s Docker contributors discussing the state of container security today. Senior Software Engineer Mrunal Patel and Thomas Cameron, Global Evangelist of Emerging Technology are presenting on how you can secure your containerized microservices without slowing down development.

Don’t Be Fooled by the Feature List

As a Solutions Architect with over 25 years of experience, I have participated in a large number of requests for information/proposals (RFI/RFP) and other technology evaluations. Often these evaluations include extended long and detailed lists of requirements and features. Due to my deep industry experience, I can easily recognize some patterns in how these lists are created. These lists are either based on the market leaders’ datasheets or information from 3rd party research documents that heavily draw from the market leaders’ datasheets. We can easily identify a circular loop of information which can lead to a few problems:

In Defense of the Pet Container, Part 1: Prelude – The Only Constant is Complexity

It’s been just over three years since Solomon Hykes presented the world with the (so far) most creative way to use the tar command: the Docker project. Not only does the project combine existing container-technologies and make them easier to use, but its well-timed introduction drove an unprecedented rate of adoption for new technology.

Did people run containers before the Docker project? Yes, but it was harder to do so. The broader community was favoring LXC, and Red Hat was working on a libvirt-based model for Red Hat Enterprise Linux. With OpenShift 2, Red Hat had already been running containers in production for several years – both in an online PaaS as well as on-premise for enterprise customers. The model pre-Docker however was fundamentally different from what we are seeing today: rather than enabling completely independent runtimes inside the containers, the approach in

Red Hat and HPE: Collaborating to Better Address Customer IT Challenges

In the world of hyper-competition the boundaries of software and hardware solutions are quickly dissolving. Rather than buying just software or a server, customers are looking for well-integrated, tested and proven solutions to gain competitive advantage. Hewlett Packard Enterprise and Red Hat understand this IT landscape very well and for many years have worked closely together to fine tune their respective hardware and software to achieve the best customer results.

Supercharge Your Network Throughput via Single Root I/O Virtualization (SR-IOV)

Our previous blog explored the basics of SR-IOV, this write-up will highlight how SR-IOV works in Red Hat Enterprise Virtualization. Red Hat Enterprise Virtualization 3.6 enabled SR-IOV to supercharge the network throughput process. This process is easily explained by looking at an example of a logical network in Red Hat Enterprise Virtualization Manager (RHEV-M).

Red Hat Delivers High Performance on Critical Enterprise Workloads with the Latest Intel Xeon E7 v4 Processor Family

Not long ago, Intel introduced a new Xeon processor platform to enable faster computing for the enterprise world. Codenamed Broadwell, this architecture brought additional cores to the chip and many improvements, from faster memory support to various security enhancements. As with three generations of Intel Xeon processors before this one, these benefits span beyond simple increases in transistor counts or the number of cores within each processor.

Today, Intel launched the Intel Xeon E7 v4 processor family, a high-end, enterprise-focused class of processors based on Broadwell architecture and targeted at large systems with four or more CPUs. Accompanying the launch are several new world record industry-standard benchmarks; this is where things like increased memory capacity or larger on-chip caches benefit overall system performance, resulting in the highest reported scores on various standard benchmarks. The Xeon E7 v4 launch, along with other announcements like it, typically send a ripple of innovation throughout Red Hat’s partner ecosystem in the form of new and improved performance results. The ability to support these partners is of paramount importance to Red Hat and, as a result, Red Hat Enterprise Linux is often selected by these ongoing benchmarking efforts.

Here is how Red Hat Enterprise Linux scored this time:

Single Root I/O Virtualization (SR-IOV) Primer

Many IT organizations have embraced virtualization technologies to leverage well known benefits such as server consolidation, reduced costs, scalability, high utilization rates and so on. Although these benefits are great, sometimes they can cause performance issues due to the overwhelming usage of I/O. One method of reducing performance issues is to enable SR-IOV capabilities that allow a PCIe device to appear to be multiple separate physical PCIe devices. The purpose of SR-IOV is to provide isolation of resources that enable the scalability of VMs and to enable a near-bare metal

Cloud Solutions Made Simple

The recent release of Red Hat Cloud Suite marked a new milestone for Red Hat and our customers.  First, it is the first in what will become a family of suites. Second, it enables enterprise IT to transform their application development and operations toward an agile, innovation center based on hybrid cloud and devops technologies.  Curating a broad set of open source technologies, Red Hat Cloud Suite offers a turnkey Cloud solution with a container-based app-development platform, private-cloud infrastructure, and a common management framework.  Specifically, Red Hat Cloud Suite includes

Architecting Containers Part 5: Building a Secure and Manageable Container Software Supply Chain

Background

In Architecting Containers Part 4: Workload Characteristics and Candidates for Containerization we investigated the level of effort necessary to containerize different types of workloads. In this article I am going to address several challenges facing organizations that are deploying containers – how to patch containers and how to determine which teams are responsible for the container images. Should they be controlled by development or operations?

In addition, we are going to take a look at