About

This playbook prepares systems in the bootcamp lab to be installed with OpenShift. The actions performed are:

• subscription of systems
• installation of and update of software
• configuration of DNS server
• configuration of NFS server
• configuration of Docker and Docker Storage

Assumptions

• The host running this playbook from is already subscribed and has ansible installed
• The hosts file will only be used to configure pre-requisites, NOT for the OpenShift install

Setup

Setup Ansible:

subscription-manager register
subscription-manager attach --auto
subscription-manager repos --disable=* --enable=rhel-7-server-rpms --enable=rhel-7-server-ose-3.1-rpms
yum -y install ansible git
git clone git@github.com:cloud-practice/ose-bootcamp.git /root/ose-bootcamp

Setup the /etc/ansible/hosts file (or use a custom file and point to it as the inventory file with --inventory=) with the following host groups (change the GUID value to match your environment):

[oselab]
oselab-GUID.oslab.opentlc.com

[ose]
master[00:02]-GUID.oslab.opentlc.com
node[00:01]-GUID.oslab.opentlc.com
infranode[00:01]-GUID.oslab.opentlc.com

[nfs]
nfs00-GUID.oslab.opentlc.com

[all:children]
oselab
ose
nfs

Using

Set the variables for subscription-manager in roles/pre_reqs/vars/main.yml for rhn_user and rhn_password and call the setup_environment.yaml playbook:

ansible-playbook setup_environment.yaml"

Or call the playbook and specify the variables on the CLI (you may need to use single quotes if your password has characters that need to be escaped:

ansible-playbook setup_environment.yaml --extra-vars="rhn_username=my.user rhn_password=my.password"

The default tasks executed on hosts at a time is 5, so it is recommended to set that to something higher, particularly for long running tasks like system updates.

ansible-playbook --forks=10 setup_environment.yaml --extra-vars="rhn_username=my.user rhn_password=my.password"

To use a specific RHN pool, define the rhn_pool variable in rols/pre_reqs/vars/main.yml or on the command line

ansible-playbook --forks=10 setup_environment.yaml --extra-vars="rhn_username=my.user rhn_password=my.password rhn_pool=XXXXX"

Tags

Tags can be used to run specific roles by appending --tags to the ansible-playbook command. e.g.:

ansible-playbook setup_environment.yaml --tags "rhn"

This is helpful for example to make sure all systems register and update before running the remaining roles.