F5 Solutions for Containers > Appendix > Appendix 3: Build an Openshift v3 Cluster Source | Edit on

Lab 1.2 - Install Openshift¶

Important

The following commands need to be run on the master only, unless otherwise specified.

Install Ansible

sudo yum install -y epel-release
sudo yum install -y ansible

Disable “epel-release”
```
sudo vim /etc/yum.repos.d/epel.repo

# Change the value enabled=1 to 0 (zero).
```
Note

This is done to prevent future OS updates from including packages from outside the standard packages.

Prep openshift AUTH

sudo mkdir -p /etc/origin/master/
sudo touch /etc/origin/master/htpasswd

Clone the openshift-ansible repo

git clone -b release-3.11 https://github.com/openshift/openshift-ansible.git $HOME/openshift-ansible

Install Openshift with Ansible

ansible-playbook -i $HOME/agilitydocs/openshift/ansible/inventory.ini $HOME/openshift-ansible/playbooks/prerequisites.yml
ansible-playbook -i $HOME/agilitydocs/openshift/ansible/inventory.ini $HOME/openshift-ansible/playbooks/deploy_cluster.yml

Tip

For troubleshooting you can validate system variables with the following command:

ansible-playbook -i $HOME/agilitydocs/openshift/ansible/inventory.ini $HOME/openshift-ansible/playbooks/byo/openshift_facts.yml

Tip

If needed, to uninstall Openshift run the following command:

ansible-playbook -i $HOME/agilitydocs/openshift/ansible/inventory.ini $HOME/openshift-ansible/playbooks/adhoc/uninstall.yml

Here’s the “inventory” (refrenced by our ansible playbook) used for the deployment.

[OSEv3:children]
masters
nodes
etcd

[masters]
ose-master1

[etcd]
ose-master1

[nodes]
ose-master1 openshift_public_hostname=ose-master1 openshift_schedulable=true openshift_node_group_name="node-config-master-infra"
ose-node1 openshift_public_hostname=ose-node1 openshift_schedulable=true openshift_node_group_name="node-config-compute"
ose-node2 openshift_public_hostname=ose-node2 openshift_schedulable=true openshift_node_group_name="node-config-compute"

[OSEv3:vars]
ansible_ssh_user=centos
ansible_become=true
enable_excluders=false
enable_docker_excluder=false
ansible_service_broker_install=false

containerized=true
openshift_disable_check=disk_availability,memory_availability,docker_storage,docker_image_availability

deployment_type=origin
openshift_deployment_type=origin

openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

openshift_master_api_port=8443
openshift_master_console_port=8443

openshift_metrics_install_metrics=false
openshift_logging_install_logging=false

Enable oc bash completion

oc completion bash >>/etc/bash_completion.d/oc_completion

Add user “centos” to openshift users

sudo htpasswd -b /etc/origin/master/htpasswd centos centos

Add user “centos” to “cluster-admin”

oc adm policy add-cluster-role-to-user cluster-admin centos

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