k8s Labs - RHEL Atomic

Supporting documentation and files.

Installation Prerequisites

You will need either Libvirt or VirtualBox installed to provision the Atomic virtual machines needed for this lab.

Libvirt Installation

As root grab the Atomic qcow image make three copies of in the libvirt images directory

su -
cd /tmp
wget http://10.32.244.206/images/rhel-atomic-cloud-7.1-1.x86_64.qcow2
cp rhel-atomic-cloud-7.1-1.x86_64.qcow2 /var/lib/libvirt/images/rhel-atomic-cloud-7.1-1.x86_64-00.qcow2
cp rhel-atomic-cloud-7.1-1.x86_64.qcow2 /var/lib/libvirt/images/rhel-atomic-cloud-7.1-1.x86_64-01.qcow2
cp rhel-atomic-cloud-7.1-1.x86_64.qcow2 /var/lib/libvirt/images/rhel-atomic-cloud-7.1-1.x86_64-02.qcow2
cd -

# Copy over iso from the libvirt directory of this repo
cp ./libvirt/atomic0-cidata.iso /var/lib/libvirt/images/

If you prefer to create a customized iso image containing the cloud-init user-data, create a directory:

mkdir -p /tmp/iso

Add file /tmp/iso/meta-data with content (modify as appropiate):

instance-id: atomic2
local-hostname: atomic2

Add file /tmp/iso/user-data with content (modify as appropiate):

#cloud-config
password: atomic
chpasswd: {expire: False}
ssh_pwauth: True
hostname: atomic2
fqdn: atomic2.example.com

And finally create the iso file that can be attached to the VM:

genisoimage -output atomic2.iso -volid cidata -joliet -rock /tmp/iso/meta-data /tmp/iso/user-data

Correct the permissions

chown -R qemu:qemu /var/lib/libvirt/images/

Clean up the original file if you want

rm -f /tmp/rhel-atomic-cloud-7.1-1.x86_64.qcow2

Configure add the images via virtmanager and add the iso a cd rom via add hardware

Once you have booted your atomic vm login with:

username: cloud-user password: atomic

# Become root
sudo -i

# Register your host with rhn (you will need you subscription username and password)
subscription-manager register

# Attach the host
subscription-manager attach --auto

# Use these discovery commands if you have issues registering your host.
subscription-manager list
subscription-manager list --available

# Edit the docker settings to allow insecure access to insecure registers
/etc/sysconfig/docker

ADD_REGISTRY='--add-registry registry.access.redhat.com --add-registry 10.32.244
INSECURE_REGISTRY='--insecure-registry 10.32.244.206:5000'

# Reboot the system
systemctl reboot

You will need to login back into the host and update the system

# Upgrade the host
atomic host upgrade