Bootstrap a management cluster

After you complete the prerequisite steps described in Prerequisites, proceed with bootstrapping your VMware vSphere-based Mirantis Container Cloud management cluster.

To bootstrap a vSphere-based management cluster:

  1. Log in to the bootstrap node running Ubuntu 18.04 that is configured as described in Prerequisites.

  2. Prepare the bootstrap script:

    1. Download and run the Container Cloud bootstrap script:

      chmod 0755
    2. Change the directory to the kaas-bootstrap folder created by the script.

  3. Obtain your license file that will be required during the bootstrap:

    1. Create a user account at

    2. Log in to your account and download the mirantis.lic license file.

    3. Save the license file as mirantis.lic under the kaas-bootstrap directory on the bootstrap node.

  4. Prepare deployment templates:

    1. Modify templates/vsphere/vsphere-config.yaml.template:

      vSphere configuration data




      IP address or FQDN of the vCenter Server.


      Port of the vCenter Server. For example, port: "8443". Leave empty to use 443 by default.


      vSphere data center name.


      Flag that controls validation of the vSphere Server certificate. Must be true or false.


      vSphere Cluster API provider user name that you added when preparing the deployment user setup and permissions.


      vSphere Cluster API provider user password.


      vSphere Cloud Provider deployment user name that you added when preparing the deployment user setup and permissions.


      vSphere Cloud Provider deployment user password.

    2. Modify the templates/vsphere/cluster.yaml.template parameters to fit your deployment. For example, add the corresponding values for cidrBlocks in the spec::clusterNetwork::services section.

      Required parameters




      IP address from the provided vSphere network for load balancer (Keepalived).


      MetalLB range of IP addresses that can be assigned to load balancers for Kubernetes Services.


      Name of the vSphere datastore. You can use different datastores for vSphere Cluster API and vSphere Cloud Provider.


      Path to a folder where the cluster machines metadata will be stored.


      Path to a network for cluster machines.


      Path to a resource pool in which VMs will be created.

    3. For either DHCP or non-DHCP vSphere network:

      1. Determine the vSphere network parameters as described in VMware vSphere network objects and IPAM recommendations.

      2. Provide the following additional parameters for a proper network setup on machines using embedded IP address management (IPAM) in templates/vsphere/cluster.yaml.template

      vSphere configuration data




      Enables IPAM. Set to true for networks without DHCP.


      CIDR of the provided vSphere network. For example,


      Gateway of the provided vSphere network.


      Optional. IP range for the cluster machines. Specify the range of the provided CIDR. For example,


      Optional. IP ranges to be excluded from being assigned to the cluster machines. The MetalLB range and SET_LB_HOST should not intersect with the addresses for IPAM. For example,


      List of nameservers for the provided vSphere network.

    4. For RHEL deployments, fill out templates/vsphere/rhellicenses.yaml.template using one of the following set of parameters for RHEL machines subscription:

      • The user name and password of your RedHat Customer Portal account associated with your RHEL license for Virtual Datacenters.

        Optionally, provide the subscription allocation pools to use for the RHEL subscriptions activation. If not needed, remove the poolIDs field for subscription-manager to automatically select the licenses for machines.

        For example:

          username: <username>
            value: <password>
          - <pool1>
          - <pool2>
      • The activation key and organization ID associated with your RedHat account with RHEL license for Virtual Datacenters. The activation key can be created by the organization administrator on RedHat Customer Portal.

        If you use the RedHat Satellite server for management of your RHEL infrastructure, you can provide a pre-generated activation key from that server. In this case:

        • Provide the URL to the RedHat Satellite RPM for installation of the CA certificate that belongs to that server.

        • Configure squid-proxy on the management or regional cluster to allow access to your Satellite server. For details, see Configure squid-proxy.

        For example:

            value: <activation key>
          orgID: "<organization ID>"
          rpmUrl: <rpm url>


      Provide only one set of parameters. Mixing of parameters from different activation methods will cause deployment failure.

    5. For CentOS deployments, in templates/vsphere/rhellicenses.yaml.template, remove all lines under items:.

  5. In bootstrap.env, add the KAAS_VSPHERE_ENABLED=true environment variable that enables the vSphere provider deployment in Container Cloud.

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

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

              - helmReleases:
                - name: vsphere-provider
                provider: vsphere
  7. Prepare the OVF template as described in Prepare the OVF template.

  8. In templates/vsphere/machines.yaml.template:

    • Define SET_VSPHERE_TEMPLATE_PATH prepared in the previous step

    • Modify other parameters as required

          kind: VsphereMachineProviderSpec
          rhelLicense: <rhel-license-name>
            - dhcp4: true
              dhcp6: false
          template: <SET_VSPHERE_TEMPLATE_PATH>


    The <rhel-license-name> value is the RHEL license name defined in rhellicenses.yaml.tempalte, defaults to kaas-mgmt-rhel-license. Remove or comment out this parameter for CentOS deployments.

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



    • NO_PROXY

    Example snippet:

    export HTTP_PROXY=
    export HTTPS_PROXY=
    export NO_PROXY=,registry.internal.lan

    The following variables formats are accepted:

    Proxy configuration data





    • - for anonymous access

    • - 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 a VMware vSphere-based cluster.

  10. Optional. Configure external identity provider for IAM.

  11. Optional. If you are going to use your own TLS certificates for Keycloak, set DISABLE_OIDC=true in bootstrap.env.

  12. Run the bootstrap script:

    ./ all

    In case of deployment issues, refer to Troubleshooting. If the script fails for an unknown reason:

    1. Run the cleanup script:

      ./ cleanup
    2. Rerun the bootstrap script.


    If the bootstrap fails on the Connecting to bootstrap cluster step with the unable to initialize Tiller in bootstrap cluster: failed to establish connection with tiller error, refer to the known issue 16873 to identify possible root cause of the issue and apply the workaround, if applicable.

  13. When the bootstrap is complete, collect and save the following management cluster details in a secure location:

    • The kubeconfig file located in the same directory as the bootstrap script. This file contains the admin credentials for the management cluster.

    • The private ssh_key for access to the management cluster nodes that is located in the same directory as the bootstrap script.


      If the initial version of your Container Cloud management cluster was earlier than 2.6.0, ssh_key is named openstack_tmp and is located at ~/.ssh/.

    • The URL for the Container Cloud web UI. Before the first login, create users with required permissions as described in Create initial users after a management cluster bootstrap.

    • The StackLight endpoints. For details, see Access StackLight web UIs.

    • The Keycloak URL that the system outputs when the bootstrap completes. The admin password for Keycloak is located in kaas-bootstrap/passwords.yml along with other IAM passwords.


    The Container Cloud web UI communicates with Keycloak to authenticate users. Keycloak is exposed using HTTPS and self-signed TLS certificates that are not trusted by web browsers.

    To use your own TLS certificates for Keycloak, refer to Configure TLS certificates for management cluster applications.


    When the bootstrap is complete, the bootstrap cluster resources are freed up.

Now, you can proceed with operating your management cluster using the Container Cloud web UI and deploying managed clusters as described in Create and operate a VMware vSphere-based managed cluster.