Requirements for an Equinix Metal based cluster

While planning the deployment of Mirantis Container Cloud cluster with MKE that is based on the Equinix Metal cloud provider, consider the requirements described below.

For system requirements for a bootstrap node, see Requirements for a bootstrap node.

If you want to deploy an Equinix Metal based managed cluster on top of an AWS management cluster, also refer to requirements for an Requirements for an AWS-based cluster.

If you use a firewall or proxy, make sure that the bootstrap, management, and regional clusters have access to the following IP ranges and domain names:

  • IP ranges:

  • Domain names:

    • mirror.mirantis.com and repos.mirantis.com for packages

    • binary.mirantis.com for binaries and Helm charts

    • mirantis.azurecr.io for Docker images

    • mcc-metrics-prod-ns.servicebus.windows.net:9093 for Telemetry (port 443 if proxy is enabled)

    • mirantis.my.salesforce.com for Salesforce alerts

Note

  • Access to Salesforce is required from any Container Cloud cluster type.

  • If any additional Alertmanager notification receiver is enabled, for example, Slack, its endpoint must also be accessible from the cluster.

Requirements for an Equinix Metal based Container Cloud cluster

Resource

Management cluster

Managed cluster

Comment

# of nodes

3 (HA)

5 (6 with StackLight HA)

  • A management cluster requires 3 nodes for the manager nodes HA. Adding more than 3 nodes to a management or regional cluster is not supported.

  • A managed cluster requires 3 nodes for the manager nodes HA and 2 nodes for the Container Cloud workloads. If the multiserver mode is enabled for StackLight, 3 nodes are required for the Container Cloud workloads.

# of vCPUs per node

8

8

RAM in GB per node

16

16

Operating system

Ubuntu 18.04

Ubuntu 18.04

For a management and managed cluster, a base Ubuntu 18.04 image is required.

Docker version

-

-

For a management and managed cluster, Mirantis Container Runtime 20.10.6 is deployed by Container Cloud as a CRI.

Server type

c3.small.x86

c3.small.x86

Most available Equinix Metal servers are configured with minimal requirements to deploy Container Cloud clusters. However, ensure that the selected Equinix Metal server type meets the following minimal requirements:

  • 16 GB RAM

  • 8 CPUs

  • 2 storage devices with more than 120 GB each

Warning

If the Equinix Metal data center has not enough capacity, the server provisioning request will fail. Servers of particular types can be unavailable at a given time. Therefore, before you deploy a cluster, verify that the selected server type is available as described in Verify the capacity of the Equinix Metal facility.

For more details about the Equinix Metal capacity, see official Equinix Metal Documentation.

# of Elastic IP addresses to be used

12

6

  • Elastic LBs for a management cluster: 1 for Kubernetes, 5 for Container Cloud, 6 for StackLight

  • Elastic LBs for a managed cluster: 1 for Kubernetes and 5 for StackLight

Ceph nodes

-

See comments

Recommended minimal number of Ceph node roles:

Storage

Manager and Monitor

1-2

1

3-500

3 (for HA)

> 500

5

If you select Manual Ceph Configuration during the cluster creation, you can manually configure Ceph roles for each machine in the cluster following the recommended minimal number of Ceph node roles. Otherwise, Equinix Metal cloud provider will automatically configure Ceph roles: all control plane machines will be configured with Storage and Manager and Monitor roles. All worker machines will be configured with Storage role.