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Adding README for ceph deployment role #19

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Expand Up @@ -79,6 +79,7 @@ nova_migration_key: ~/.ssh/nova_migration # Nova migration SSH key

2. **Configure variables**:
```bash
cp ansible/group_vars/all.sample.yml ansible/group_vars/all.yml
vim ansible/group_vars/all.yml
```

Expand Down Expand Up @@ -127,6 +128,54 @@ After successful deployment, the installer automatically:
2. **Validates Hypervisors**: Lists available hypervisors to confirm successful deployment
3. **Provides Status**: Displays deployment status and service availability

## Deploy Ceph

JetBrew supports deploying an external Ceph cluster that can be integrated with RHOSO for block storage (Cinder), image storage (Glance), and VM disk storage (Nova). The Ceph deployment is performed separately from the main RHOSO deployment.

### Prerequisites

Before deploying Ceph, ensure:
- **Sufficient Nodes**: You have enough nodes available.
- **Registry Access**: Access to Red Hat registry (`registry.redhat.io`) with valid credentials.
- **rhos release rpm**: Make sure You have Redhat openstack rpm.

### Configuration

#### Required Variables

Edit the `ansible/group_vars/all.yml` file and configure the following mandatory variables:

```yaml
# External ceph deploy vars
cloud: cloud40
ocp_inventory_local_path: /root/JetBrew/ceph_inventory.json
ceph_node_count: 3
ansible_ssh_password: "{{ ssh_password }}"

rhos_release_rpm:
ceph_version: "7.1"

# Registry credentials used by external ceph
registry_url: "registry.redhat.io"
registry_username:
registry_password:
```

- `cloud` Cloud identifier (e.g., cloud40)
- `ocp_inventory_local_path` Path to the custom Ceph inventory file. If this path is not specified, the last three nodes will be used by default for the Ceph deployment.
- `ceph_node_count` Number of nodes assigned for the Ceph cluster.
- `ansible_ssh_password` Defaults to `ssh_password` if already defined, or can be explicitly set here.
- `rhos_release_rpm` Path or URL to the RHOS release RPM.
- `ceph_version` Desired Ceph version to deploy.
- `registry_url` Registry URL where Ceph images are hosted.
- `registry_username` Username for registry authentication.
- `registry_password` Password for registry authentication.

#### Run Ceph ansible playbook
```bash
ansible-playbook ansible/deploy_external_ceph.yaml
```

## RHOSO Deletion

To remove **any** OpenStack resources from your cluster (regardless of deployment tool), use the RHOSO deletion playbook:
Expand Down