Deploy an OpenStack-based regional cluster¶

You can deploy an additional regional OpenStack-based cluster to create managed clusters of several provider types or with different configurations.

To deploy an OpenStack-based regional cluster:

Log in to the node where you bootstrapped a management cluster.
Verify that the bootstrap directory is updated.

Select from the following options:
- For clusters deployed using Container Cloud 2.11.0 or later:
```
./container-cloud bootstrap download --management-kubeconfig <pathToMgmtKubeconfig> \
--target-dir <pathToBootstrapDirectory>
```
- For clusters deployed using the Container Cloud release earlier than 2.11.0 or if you deleted the kaas-bootstrap folder, download and run the Container Cloud bootstrap script:
```
wget https://binary.mirantis.com/releases/get_container_cloud.sh

chmod 0755 get_container_cloud.sh

./get_container_cloud.sh
```
Prepare the OpenStack configuration for a new regional cluster:
1. Log in to the OpenStack Horizon.
2. In the Project section, select API Access.
3. In the right-side drop-down menu Download OpenStack RC File, select OpenStack clouds.yaml File.
4. Save the downloaded clouds.yaml file in the kaas-bootstrap folder created by the get_container_cloud.sh script.
5. In clouds.yaml, add the password field with your OpenStack password under the clouds/openstack/auth section.
  
  Example:
```
clouds:
  openstack:
    auth:
      auth_url: https://auth.openstack.example.com:5000/v3
      username: your_username
      password: your_secret_password
      project_id: your_project_id
      user_domain_name: your_user_domain_name
    region_name: RegionOne
    interface: public
    identity_api_version: 3
```
6. Verify access to the target cloud endpoint from Docker. For example:
```
docker run --rm alpine sh -c "apk add --no-cache curl; \
curl https://auth.openstack.example.com:5000/v3"
```
  The system output must contain no error records.
In case of issues, follow the steps provided in Troubleshooting.
Configure the cluster and machines metadata:
1. In templates/machines.yaml.template, modify the spec:providerSpec:value section for 3 control plane nodes marked with the cluster.sigs.k8s.io/control-plane label by substituting the flavor and image parameters with the corresponding values of the control plane nodes in the related OpenStack cluster. For example:
```
spec: &cp_spec
  providerSpec:
    value:
      apiVersion: "openstackproviderconfig.k8s.io/v1alpha1"
      kind: "OpenstackMachineProviderSpec"
      flavor: kaas.minimal
      image: bionic-server-cloudimg-amd64-20190612
```
  Note
  
  The flavor parameter value provided in the example above is cloud-specific and must meet the Container Cloud requirements.
  
  Also, modify other parameters as required.
2. Modify the templates/cluster.yaml.template parameters to fit your deployment. For example, add the corresponding values for cidrBlocks in the spec::clusterNetwork::services section.

Optional if servers from the Ubuntu NTP pool (*.ubuntu.pool.ntp.org) are accessible from the node where the regional cluster is being provisioned. Otherwise, this step is mandatory.

Configure the regional NTP server parameters to be applied to all machines of regional and managed clusters in the specified region.

In templates/cluster.yaml.template, add the ntp:servers section with the list of required servers names:

spec:
  ...
  providerSpec:
    value:
      kaas:
      ...
        regional:
          - helmReleases:
            - name: openstack-provider
              values:
                config:
                  lcm:
                    ...
                    ntp:
                      servers:
                      - 0.pool.ntp.org
                      ...
            provider: openstack
            ...

Optional. If you require all Internet access to go through a proxy server, in bootstrap.env, add the following environment variables to bootstrap the regional cluster using proxy:

HTTP_PROXY
HTTPS_PROXY
NO_PROXY

Example snippet:

export HTTP_PROXY=http://proxy.example.com:3128
export HTTPS_PROXY=http://user:pass@proxy.example.com:3128
export NO_PROXY=172.18.10.0,registry.internal.lan

The following variables formats are accepted:

Proxy configuration data¶
Variable	Format
`HTTP_PROXY` `HTTPS_PROXY`	`http://proxy.example.com:port` - for anonymous access `http://user:password@proxy.example.com:port` - for restricted access
`NO_PROXY`	Comma-separated list of IP addresses or domain names

For the list of Mirantis resources and IP addresses to be accessible from the Container Cloud clusters, see Requirements for an OpenStack-based cluster.

Clean up the environment configuration:
- If you are deploying the regional cluster on top of a baremetal-based management cluster, unset the following parameters:
```
unset KAAS_BM_ENABLED KAAS_BM_FULL_PREFLIGHT KAAS_BM_PXE_IP \
      KAAS_BM_PXE_MASK KAAS_BM_PXE_BRIDGE KAAS_BM_BM_DHCP_RANGE \
      TEMPLATES_DIR
```
- If you are deploying the regional cluster on top of an AWS-based management cluster, unset the KAAS_AWS_ENABLED parameter:
```
unset KAAS_AWS_ENABLED
```
Note

If you are deploying the regional cluster on top of a management cluster of other supported cloud providers, skip this step.
Export the following parameters:
```
export KUBECONFIG=<pathToMgmtClusterKubeconfig>
export REGIONAL_CLUSTER_NAME=<newRegionalClusterName>
export REGION=<NewRegionName>
```
Substitute the parameters enclosed in angle brackets with the corresponding values of your cluster.

Caution

The REGION and REGIONAL_CLUSTER_NAME parameters values must contain only lowercase alphanumeric characters, hyphens, or periods.
Note

If the bootstrap node for the regional cluster deployment is not the same where you bootstrapped the management cluster, also export SSH_KEY_NAME. It is required for the management cluster to create a publicKey Kubernetes CRD with the public part of your newly generated ssh_key for the regional cluster.
```
export SSH_KEY_NAME=<newRegionalClusterSshKeyName>
```

Run the regional cluster bootstrap script:

./bootstrap.sh deploy_regional

Note

When the bootstrap is complete, obtain and save in a secure location the kubeconfig-<regionalClusterName> file located in the same directory as the bootstrap script. This file contains the admin credentials for the regional cluster.

If the bootstrap node for the regional cluster deployment is not the same where you bootstrapped the management cluster, a new regional ssh_key will be generated. Make sure to save this key in a secure location as well.

The workflow of the regional cluster bootstrap script¶
#	Description
1	Prepare the bootstrap cluster for the new regional cluster.
2	Load the updated Container Cloud CRDs for `Credentials`, `Cluster`, and `Machines` with information about the new regional cluster to the management cluster.
3	Connect to each machine of the management cluster through SSH.
4	Wait for the `Machines` and `Cluster` objects of the new regional cluster to be ready on the management cluster.
5	Load the following objects to the new regional cluster: `Secret` with the management cluster `kubeconfig` and `ClusterRole` for the Container Cloud provider.
6	Forward the bootstrap cluster endpoint to `helm-controller`.
7	Wait for all CRDs to be available and verify the objects created using these CRDs.
8	Pivot the cluster API stack to the regional cluster.
9	Switch the LCM agent from the bootstrap cluster to the regional one.
10	Wait for the Container Cloud components to start on the regional cluster.

Now, you can proceed with deploying the managed clusters of supported provider types as described in Create and operate managed clusters.