WebVirtMGR

Originally posted on scotts tech blog:
Need a simple and easy to use Free KVM Manager? While there are many tools out there that offer similar functionality I found that with only a few hosts WebVirtMgr offers a simple and easy UI to create and manage Hypervisors and VM’s. Outline of setting up WebVirtMgr Prepare CentOS 7.3 Server Prepare CentOS 7.3 Client Install and configure… Continue reading WebVirtMGR

DHCP Server in a few steps (CentOS)

Hi there, This is short post how to create a DHCP server in a few steps for any lab. This is just for Centos 7. Install your DHCP server Install dhcpd Now, modify dhcpd.conf as follow: I strongly suggest you to extend default-lease-time and max-lease-time to more reasonable values. Start your dhcpd Check if everything is ok. You will get an output like this. That’s … Continue reading DHCP Server in a few steps (CentOS)

Prepare your #Kubernetes Cluster with #Ansible and #cloud_init

A bit tired using bash scripts. I’ve done this small playbook based on the post: “Resize and manage cloud-init on kvm with centos cloud images”. to build up your k8s master/minions over KVM using a Cloud QCOW2 image. I’ve used cloud_init to configure those cloud images from a temporary cdrom iso. Check out the code at my repo: p1nrojas/k8s-demo-installer Requirements Check out you have enough … Continue reading Prepare your #Kubernetes Cluster with #Ansible and #cloud_init

Dockers – Nuage shows off micro-segmentation on containers.

Yes! I could dig into containers finally. My first impression is they are faster and easier to handle. I am seeing a hard future for hypervisors. However, Apps must to be designed to work on that sort of constant change. Nuage brings a really good microsegmentation to them and help us to bring advanced routing, security and networks settings (i.e. forwarding, QoS) I am not … Continue reading Dockers – Nuage shows off micro-segmentation on containers.

Resize and manage cloud-init on kvm with centos cloud images

Hi there. The following tools will help you to create virsh domains using CentOS Cloud images (those images can be downloaded from http://cloud.centos.org/centos/7/images). the difference with my previous post “USING CENTOS CLOUD IMAGES WITH VIRSH AND NUAGE METADATA” is I am not using Nuage now. I am using a simple linux bridge to eth0 interface. This could be used to create your own linux lab … Continue reading Resize and manage cloud-init on kvm with centos cloud images

#Ceph 0.87 earlier perf results KVM 2.0 & libvirt1.2.2 #Openstack Icehouse

Hello, after almost a year working with Ceph in our cloud solution koolfit.mx … we are pleased to share some earlier test performance results, we are on the way to prepare something nicer, however, I’ve got a not so weird impulse to publish it despite those numbers could change later – We’ve concluded to do some adjustments to the platform, based on this first round of results… we are sure … Continue reading #Ceph 0.87 earlier perf results KVM 2.0 & libvirt1.2.2 #Openstack Icehouse

Koolfit: Good Evening Dominicana!

My first time in Dominicana ever. I came to support our Sales Director in Dominicana, Persiles Martinez – what a nice host BTW, his picture below – Persiles diciendo "KIO es mas que una oferta de Centro de Datos" @kionetworks Dominicana #OpenStackHablaEspañol A post shared by Mau (@p1nrojas) on Feb 24, 2015 at 3:34pm PST It was a long flight connecting through Panama (7 hours … Continue reading Koolfit: Good Evening Dominicana!

Cutting-edge cloud tech is not based exclusively on #OpenStack

#OpenStack is a bunch of software’s pieces, right? Besides of #OpenStack brings so much resources to cover most of your needs to get a really enhanced cloud experience. You need to add more pieces and coding to fully fit your performance needs. Choose the right Hyper-Visor Let’s start choosing the Hyper-Visor. You can get KVM, Xen, Hyper-V or VMWare. Any of these options are OK. However, if you … Continue reading Cutting-edge cloud tech is not based exclusively on #OpenStack

Under the hood, KVM and QEMU working together | CHANGE as a Service

Memo, I wanna learn more! good post! KVM needs Qemu (emulator) for full hypervisor functionality. QEMU is self-sufficient and  KVM is really a Linux kernel module for exploiting VT-extenstions to act as driver for the physical CPU capabilities. So, we can say QEMU needs KVM’s performance boost and  KVM by itself cannot provide the complete virtualization solution, it needs QEMU. via Under the hood, KVM … Continue reading Under the hood, KVM and QEMU working together | CHANGE as a Service

The heart of Nova: Libvirt | CHANGE as a Service

“The Libvirt driver for Nova is one of the most comprehensive implementations across all supported hypervisors. Do you know how Nova can spawn, suspend or terminate an instance? well, those are API calls to get interactions between Nova, Libvirt and KVM” Thanks Memo for such a nice post about NOVA… Could you post something about Cinder ;)? via The heart of Nova: Libvirt | CHANGE … Continue reading The heart of Nova: Libvirt | CHANGE as a Service