https://github.com/redhat-cop/ocp4-prereqs-validator
Ansible resources to validate the prerequisites for OpenShift 4
https://github.com/redhat-cop/ocp4-prereqs-validator
container-cop
Last synced: 6 months ago
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Ansible resources to validate the prerequisites for OpenShift 4
- Host: GitHub
- URL: https://github.com/redhat-cop/ocp4-prereqs-validator
- Owner: redhat-cop
- Created: 2019-12-03T23:09:49.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-12-27T21:36:28.000Z (about 6 years ago)
- Last Synced: 2025-06-22T12:07:29.596Z (7 months ago)
- Topics: container-cop
- Homepage:
- Size: 111 KB
- Stars: 9
- Watchers: 11
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Pre-requisites Validator for OpenShift 4.2 on vSphere
This repository contains playbooks and roles to help the preparation and validation of the pre-requisites needed for a OpenShift UPI deployment over vSphere.
### Roles
**Network Checks**
This role aims to validate the DNS records. It checks the A, PTR and SRV records based on the servers in hosts file. It creates the file dns-checks-output.txt which contains the result of each validation.
Example:
**OCP Prepare Prereqs**
This role prepare a server with the following pre-requisites needed for OCP 4.2 on vSphere:
- DNS
- DHCP
- Apache Webserver
- HAProxy
It also set up the tools above (named.conf, DNS zone files, dhcpd.conf and haproxy.cfg) considering your inventory file.
> **NOTE**: This is not intended to be used in production environments, only for lab, sandbox or studying purposes.
**NFS Server Setup**
Simple role to deploy a NFS server to be used as backend for RWX persistent volumes.
### How to use it
These roles were tested in a RHEL 8 server and Ansible 2.8.
### Prepare workstation
The first step is to register the server and enable the repos:
```
subscription-manager register --username=
subscription-manager attach --pool=
subscription-manager repos --disable='*' \
--enable=rhel-8-for-x86_64-baseos-rpms \
--enable=rhel-8-for-x86_64-appstream-rpms
--enable=ansible-2.8-for-rhel-8-x86_64-rpms
dnf update -y
reboot
yum install ansible
```
Now configure your hosts file (see the [hosts.example file](hosts.example))
Set up the playbook yaml file with proper parameters. Example:
```
---
- hosts: localhost
roles:
- { role: network-checks }
gather_facts: no
vars:
- control_plane_lb_ip: "10.0.0.10"
- apps_lb_ip: "10.0.0.10"
- base_name: "rhbr-labs.com"
- cluster_name: "ocp"
```
Run the playbook:
```
ansible-playbook -i
```
Example:
```
ansible-playbook -i hosts.example prereqs-validator.yml
```
-----
This is a work-in-progress and the following items is planned to be designed:
- Documentation: Document each role.
- Load Balancer: Validate if LB VIP is set (if possible).
- DHCP: Validate if DHCP is available in the network (if possible).
- Firewall: Validate if required ports are accessible through the network.