Minimum Requirements and Deployment Conditions for the Cluster

Minimum Requirements for Deploying a Dekube Cluster with the Capability of Connecting External Clients

Minimum Requirements

For installation, virtual machines or physical servers with the following minimum specifications should be prepared:

1. Control-plane - 4 vCPU, 8 RAM, 64 GB;

2. Worker with NVIDIA GPUs - powerful as much as possible;

3. VPN - 4 vCPU, 4 RAM, 40 GB;

4. Ingres - 4 vCPU, 8 RAM, 40 GB.

During the installation process, the following components will be deployed:

• Cluster master nodes;

• Cluster worker nodes (Optionally);

• VPN node to ensure connection of external clients;

• Ingress node to publish the cluster's web services.

Conditions That Must Be Met Before Deployment

1. 3 master nodes (control-plane) prepared and configured:

   • ОС AlmaLinux 9+;

   • User root;

   • The system should be updated (mandatory);

   • TCP port 6443 (Kubernetes API-server) should be opened to everyone;

   • Internet access;

   • Nodes should have external IP-addresses or should be in LAN;

   • Your public key should be in authorized_keys file on all nodes;

2. Optionally prepared working nodes (worker):

   • AlmaLinux 9+;

   • User root;

   • The system should be updated (mandatory);

   • TCP port 10250 (Kubelet API) should be opened to communicate with control-plane;

   • TCP ports 30000-32767 (NodePort Services) should be opened to everyone;

   • Internet access;

   • Nodes should have external IP-addresses or should be in the same LAN, where control-plane are;

   • Your public key should be in authorized_keys file on all nodes;

3. Workstation with Ansible (Python 3.9+), from which the deployment of a cluster will be proceeded:

   • sudo user;

   • Python 3.9+;

   • Access to every machine involved in the deployment process;

4. Machine with VPN (except mainland China):

   • AlmaLinux 9+;

   • Machine should have an external IP-address;

5. Machine for Ingress:

   • AlmaLinux 9+;

   • Machine should have an external IP-address.

More details about the ports and protocols used:

Ports and ProtocolsKubernetes