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Skip to content → NFVPE Blog Blogs by the Red Hat NFVPE team open menu * Doug’s Posts * Leif’s Posts * Luke’s Posts * Ricky’s Posts * Russell’s Posts * Yolanda’s Posts * github Search SIDEBAR open sidebar CATEGORIES * Asterisk (1) * Docker (1) * Guests (9) * Russell's Posts (9) * Kubernetes (1) * NFVPE (87) * Doug's Posts (41) * Leif's Posts (11) * Luke's Posts (5) * Ricky's Posts (5) * Saravanan's Posts (6) * Yolanda's Posts (19) * OpenStack (6) * OVN (8) * OVS (6) ARCHIVES * July 2022 (1) * May 2021 (1) * November 2019 (2) * September 2019 (1) * June 2019 (1) * May 2019 (1) * December 2018 (1) * October 2018 (3) * July 2018 (1) * June 2018 (2) * April 2018 (1) * March 2018 (1) * January 2018 (1) * December 2017 (1) * November 2017 (5) * October 2017 (2) * September 2017 (4) * August 2017 (6) * July 2017 (7) * June 2017 (6) * May 2017 (4) * April 2017 (4) * March 2017 (4) * February 2017 (8) * January 2017 (4) * December 2016 (9) * November 2016 (6) * October 2016 (2) * September 2016 (1) * April 2016 (1) * October 2015 (2) * May 2015 (1) * April 2015 (2) NFVPE BLOG POSTS CHAINSAW CNI — MODIFY CONTAINER NETWORKING AT RUNTIME Published July 14, 2022 by Doug Smith INTRODUCING: CHAINSAW CNI Continue readingChainsaw CNI — Modify container networking at runtime Comments closed CNITOOL — YOUR CNI SWISS ARMY KNIFE Published May 14, 2021 by Doug Smith If you’re looking at developing (or debugging!) CNI plugins, you’re going to need a workflow for developing CNI plugins – something that really lets you get in there, and see exactly what a CNI plugin is doing. You’re going to need a bit of a swiss army knife, or something that slices, dices, and makes juilienne fries. cnitool is just the thing to do the job. Today we’ll walk through setting up cnitool, and then we’ll make a “dummy” CNI plugin to use it with, and we’ll run a reference CNI plugin. Continue readingcnitool — your CNI Swiss Army knife Comments closed WHEREABOUTS — A CLUSTER-WIDE CNI IP ADDRESS MANAGEMENT (IPAM) PLUGIN Published November 27, 2019 by Doug Smith Something that’s a real challenge when you’re trying to attach multiple networks to pods in Kubernetes is trying to get the right IP addresses assigned to those interfaces. Sure, you’d think, “Oh, give it an IP address, no big deal” – but, turns out… It’s less than trivial. That’s why I came up with the IP Address Management (IPAM) plugin that I call “Whereabouts” – you can think of it like a DHCP replacement, it assigns IP addresses dynamically to interfaces created by CNI plugins in Kubernetes. Today, we’ll walk through how to use Whereabouts, and highlight some of the issues that it overcomes. First – a little background. Continue readingWhereabouts — A cluster-wide CNI IP Address Management (IPAM) plugin Comments closed CONFIGURE AND MEASURE REALTIME WORKERS PERFORMANCE ON OPENSHIFT Published November 11, 2019 by Yolanda Robla Mota Depending on your workloads, you may want to have workers with realtime kernel in your cluster.How to configure and how to enroll the nodes into an Openshift cluster is not on the scope of this article, we will assume that you have the worker node up and running with realtime kernel.Once you have it, how to properly schedule workloads that make use of it? CPU manager and kubelet static policy – https://docs.openshift.com/container-platform/4.2/scalability_and_performance/using-cpu-manager.html CPU Manager manages groups of CPUs and constrains workloads to specific CPUs. This is useful for several cases, in our case for low-latency applications. In order to enable… Continue readingConfigure and measure realtime workers performance on OpenShift Comments closed AKRAINO KNI EDGE STACK Published September 25, 2019 by Ricky Noriega Some months ago I started working on Akraino Edge Stack https://wiki.akraino.org. Akraino is an open source software stack that improves the state of edge cloud infrastructure… Continue readingAkraino KNI Edge Stack Comments closed ADD RHEL8 NODES TO OPENSHIFT DEPLOYMENTS Published June 19, 2019 by Yolanda Robla Mota This blogpost is going to show how to automatically enroll RHEL 8 (realtime) to Openshift 4.1 deployments, using UPI method.This assumes that you will setup an OpenShift cluster using UPI, following the according documentation: https://docs.openshift.com/container-platform/4.1/installing/installing_bare_metalThe procedure on how to spin up this cluster in a semi-automated way is also shown at https://github.com/redhat-nfvpe/upi-rt . This article will assume that you have this UPI cluster up and running. Enroll RHEL 8 nodes as workers By default, all nodes added into an OpenShift cluster are based on RHCOS. But there are use caes where you may need RHEL nodes. This is the case… Continue readingAdd RHEL8 nodes to OpenShift deployments Comments closed HIGH PERFORMANCE NETWORKING WITH KUBEVIRT – SR-IOV DEVICE PLUGIN TO THE RESCUE! Published May 15, 2019 by Doug Smith If you’ve got workloads that live in VMs, and you want to get them into your Kubernetes environment (because, I don’t wish maintaining two platforms even on the worst of the supervillains!) – you might also have networking workloads that require you to really push some performance…. KubeVirt with SR-IOV device plugin might be just the hero you need to save the day. Not all heros wear capes, sometimes those heroes just wear a t-shirt with a KubeVirt logo that they got at Kubecon. Today we’ll spin up KubeVirt with SR-IOV device plugin and we’ll run a VoIP workload on it, so jump into a phonebooth, change into your Kubevirt t-shirt and fire up a terminal! Continue readingHigh Performance Networking with KubeVirt – SR-IOV device plugin to the rescue! Comments closed CREATE AND RESTORE EXTERNAL BACKUPS OF VIRTUAL MACHINES WITH LIBVIRT Published December 19, 2018 by Yolanda Robla Mota A common need for deployments in production, is to have the possibility of taking backups of your working virtual machines, and export them to some external storage.Although libvirt offers the possibility of taking snapshots and restore them, those snapshots are intended to be managed locally, and are lost when you destroy your virtual machines.There may be the need to just trash all your environment, and re-create the virtual machines from an external backup, so this article offers a procedure to achieve it. First step, create an external snapshot So the first step will be taking an snapshot from your running… Continue readingCreate and restore external backups of virtual machines with libvirt Comments closed SETUP AN NFS CLIENT PROVISIONER IN KUBERNETES Published October 17, 2018 by Yolanda Robla Mota Setup an NFS client provisioner in Kubernetes One of the most common needs when deploying Kubernetes is the ability to use shared storage. While there are several options available, one of the most commons and easier to setup is to use an NFS server.This post will explain how to setup a dynamic NFS client provisioner on Kubernetes, relying on an existing NFS server on your systems. Step 1. Setup an NFS server (sample for CentOS) First thing you will need, of course, is to have an NFS server. This can be easily achieved with some easy steps: Install nfs package:… Continue readingSetup an NFS client provisioner in Kubernetes Comments closed A KUBERNETES OPERATOR TUTORIAL? YOU GOT IT, WITH THE OPERATOR-SDK AND AN ASTERISK OPERATOR! Published October 4, 2018 by Doug Smith So you need a Kubernetes Operator Tutorial, right? I sure did when I started. So guess what? I got that b-roll! In this tutorial, we’re going to use the Operator SDK, and I definitely got myself up-and-running by following the Operator Framework User Guide. Once we have all that setup – oh yeah! We’re going to run a custom Operator. One that’s designed for Asterisk, it can spin up Asterisk instances, discover them as services and dynamically create SIP trunks between n-number-of-instances of Asterisk so they can all reach one another to make calls between them. Fire up your terminals, it’s time to get moving with Operators. Continue readingA Kubernetes Operator Tutorial? You got it, with the Operator-SDK and an Asterisk Operator! Comments closed POSTS NAVIGATION 1 2 … 10 Next Founder WordPress Theme by Compete Themes.