OpenNebula

OpenNebula combines existing virtualization technologies with advanced features for multi-tenancy, automatic provision and elasticity, following a bottom-up approach driven by the real needs of sysadmins and devops.

TODO

• HA Front instalation
• External database configuration
• SSH inter-node communication

Description

Configures OpenNebula cluster using libvirt/kvm nested virtualization in Vagrant. Vagrant starts 3 nodes. Ryba is then used to deploy and configure 1 frontend and 2 workers.

Before you start

Nested virtualization allows you to run a virtual machine (VM) inside another VM while still using hardware acceleration from the host. Make sure that nested virtualization is enabled on the host, to do so :

cat /sys/module/kvm_intel/parameters/nested

If the result is Y, you're good to go, if its not you should enable it by setting kvm-intel.nested=1 on your kernel.

Archlinux / Fedora 25

sudo tee -a /etc/modprobe.d/kvm-nested.conf << CONFIG
# create new
options kvm_intel nested=1
CONFIG
sudo modprobe -r kvm_intel # disable module
sudo modprobe kvm_intel # reload module
cat /sys/module/kvm_intel/parameters/nested # Sould be Y

You should also add yourself to the libvirt group if you do not want to enter your password each time you do something with Vagrant.

sudo gpasswd -a ${USER} libvirt
newgrp libvirt

Quickstart

git clone https://github.com/ryba-io/ryba-env-nebula
cd ryba-env-nebula
npm install
./bin/vagrant up
./bin/ryba prepare
./bin/ryba install