Red Hat Summit 2017 – Planning your Cloud and Containers Labs

This year in Boston, MA you can attend the Red Hat Summit 2017, the event to get your updates on open source technologies and meet with all the experts you follow throughout the year.

It’s taking place from May 2-4 and is full of interesting sessions, keynotes, and labs.

This year I was part of the process of selecting the labs you are going to experience at Red Hat Summit and wanted to share them to help you plan your cloud and containers labs experience. These labs are for you to spend time with the experts who will teach you hands-on and how to get the most out of development with containers and in the Cloud using products like OpenShift Container Platform.

Each lab is a 2-hour session, so planning is essential to getting the most out of your days at Red Hat Summit.

As you might be struggling to find and plan your sessions together with some lab time, here is an overview of the labs, you can find the exact room and times in the session catalog. Each entry includes the lab number, title, abstract, instructors, and is linked to the session catalog entry:

Continue reading “Red Hat Summit 2017 – Planning your Cloud and Containers Labs”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Containerizing open-vm-tools – Part 1: The Dockerfile and constructing a systemd unit file

While validating OpenShift Container Platform on a VMware platform the usage of Atomic OS was also a requirement. In the initial reference architecture, the decision was made to use Red Hat Enterprise Linux as the platform. This platform was then customized and the same packages as in Atomic were installed via Ansible and Red Hat Network.

Continue reading “Containerizing open-vm-tools – Part 1: The Dockerfile and constructing a systemd unit file”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Take advantage of your Red Hat Developers membership and download RHEL today at no cost.


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

Container Orchestration Specification for better DevOps

The world is moving to microservices, where applications are composed of a complex topology of components, orchestrated into a coordinated topology.

Microservices have become increasingly popular as they increase business agility and reduce the time for changes to be made. On top of this, containers make it easier for organizations to adopt microservices.

Increasingly, containers are the runtimes used for composition, and many excellent solutions have been developed to handle container orchestration such as: Kubernetes/OpenShift; Mesos and its many frameworks like Marathon; and even Docker Compose, Swarm and SwarmKit are trying to address these issues.

But at what cost?

We’ve all experienced that moment when we’ve been working long hours and think “yes, that feature is ready to ship”. We release it into our staging environment and bang, nothing works, and we don’t really know why. What if you could consistently take the same topology you ran in your development workspace, and run it in other, enterprise grade, environments such as your staging or production, and expect it to always JUST WORK?

Continue reading “Container Orchestration Specification for better DevOps”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 


For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

Tracing packets inside Open vSwitch

Open vSwitch is a software switch responsible for providing network connectivity to virtual machines or containers. Since it is programmable, it brings a challenge to understand what is going on in the network. Open vSwitch (OVS) is an OpenFlow virtual switch, so before talking about OVS itself, it is necessary to introduce OpenFlow a bit.

OpenFlow is an open standard protocol that allows separation of the packet forwarding (data plane) from the high level routing decisions (control plane). The control plane (also known as OF controller) is responsible to provide instructions to the data plane (vswitch) on how to process packets.

The fact that each packet can have its own fate brings a new challenge to understand what is going on in the network. This article will show how to know what is happening with packets inside the vswitch.

Continue reading “Tracing packets inside Open vSwitch”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Take advantage of your Red Hat Developers membership and download RHEL today at no cost.

Managing temporary files with systemd-tmpfiles on Red Hat Enterprise Linux 7

Have you ever used a temporary directory? I’m guessing if you use a computer, you’ve used one of these. It’s a core feature of nearly every operating-system.

To ensure system stability, you should always check that filesystems on which a temporary directory resides don’t get full — running out of space can quickly bring your system to a grinding halt.

One method to prevent running out of space could be to place those directories on a dedicated partition, but no matter the solution, it is a best practice to clean those directories periodically, based on your/your app’s needs.

Continue reading “Managing temporary files with systemd-tmpfiles on Red Hat Enterprise Linux 7”


Join Red Hat Developers, a developer program for you to learn, share, and code faster – and get access to Red Hat software for your development.  The developer program and software are both free!

 

Take advantage of your Red Hat Developers membership and download RHEL today at no cost.