centos-cloud

Setup tl;dr

From a CentOS7 minimal installation.

Controller:

ssh root@controller
yum -y install git
git clone https://github.com/dmsimard/centos-cloud
cd centos-cloud
./bootstrap-controller.sh

Compute Node(s):

ssh root@compute01
yum -y install git
git clone https://github.com/dmsimard/centos-cloud
cd centos-cloud
./bootstrap-compute.sh <ipaddress_of_controller>

To generate test resources (ssh key, image, instance):

ssh root@compute01
cd centos-cloud
./bootstrap-resources.sh

Architecture tl;dr

• Nova, Neutron, Keystone, Glance only (no Horizon, Swift, Cinder, Heat, Telemetry, etc.)
• No security groups, no floating IPs, no virtual routers, no metadata service
• Flat networking (no VLAN/VXLAN) with DHCP and LinuxBridge

Notes

• There is an openrc with credentials generated in /root/ of controller and compute nodes

• To access a novnc console:

  openstack server list
  openstack console url show <vmuuid>
  # Access the URL via a tunnel or some other mean of reaching the private network

Ops

Ansible playbooks will be created as needed to help operating the cloud.

Ansible must be run from the controller node which has network and ssh key authentication set up to the compute nodes.

manage-services.yml

# Stop all OpenStack services only on compute nodes
ansible-playbook -i hosts -l compute playbooks/manage-services.yml -e "action=stop"

# Restart all OpenStack services on every host
ansible-playbook -i hosts playbooks/manage-services.yml -e "action=restart"

# Start all OpenStack services only on controller
ansible-playbook -i hosts -l controller playbooks/manage-services.yml -e "action=start"

Create image

You can create a base image using the create-image.sh script :

# For instance on Fedora 24
dnf install -y libguestfs-tools
./create-image.sh

Todo

• SSL everywhere (let's encrypt?)
• Make sure you change the admin password once all the nodes are setup