Preparing the administrator and target hosts

The administrator host is used to deploy and manage the Kubernetes cluster and Kaspersky Next XDR Expert. The target hosts are included in the Kubernetes cluster and perform the workload of the Kaspersky Next XDR Expert components. Kaspersky Next XDR Expert is deployed on the target hosts.

To prepare the administrator and target hosts:

1. Prepare a device that will act as an administrator host from which KDT will launch.

   The administrator host will not be included in the Kubernetes cluster that is created by KDT during the deployment.

   Make sure that the hardware and software on the administrator host meet the requirements for KDT.

   On the administrator host, allocate at least 10 GB of free space in the temporary files directory (/tmp) for KDT. If you do not have enough free space in this directory, run the following command to specify the path to another directory:

   export TMPDIR=<new_directory>/tmp

2. Prepare the physical or virtual machines on which Kaspersky Next XDR Expert will be deployed.

   A minimum cluster configuration for the distributed deployment includes four nodes:

   • One primary node

     The primary node is intended for managing the cluster, storing metadata, and distributing of the workload.

   • Three worker nodes

     The worker nodes are intended for performing the workload of the Kaspersky Next XDR Expert components.

     For optimal allocation of computing resources, it is recommended to use nodes with the same resources.

     You can install the DBMS inside the Kubernetes cluster when you perform the demonstration deployment of Kaspersky Next XDR Expert. In this case, allocate the additional worker node for the DBMS installation. KDT will install the DBMS during the Kaspersky Next XDR Expert deployment.

     For the distributed deployment, we recommend installing a DBMS on a separate server outside the cluster.
     After you deploy Kaspersky Next XDR Expert, changing the DBMS installed inside the cluster to a DBMS installed on a separate server is not available. You have to remove all Kaspersky Next XDR Expert components, and then install Kaspersky Next XDR Expert again. In this case, the data will be lost.

   A minimum cluster configuration for the single node deployment includes one target host, which acts as the primary and worker nodes. On this primary/worker node, the Kubernetes cluster and Kaspersky Next XDR Expert components are installed.

   Make sure that the hardware and software on the target hosts meet the requirements for the selected deployment option (the distributed or single node deployment), and the target hosts are located in the same broadcast domain.

   Do not install Docker on the selected target hosts. KDT will install all necessary software and dependencies during the deployment.

3. On the administrator host, install the package for Docker version 20 or later.
4. On the target hosts, install the sudo package, if this package is not already installed. For Debian family operating systems, install the UFW package on the target hosts.
5. On the primary node with the UFW configuration, allow IP forwarding. In the /etc/default/ufw file, set DEFAULT_FORWARD_POLICY to ACCEPT.
6. Provide access to the package repository where the packages required for the function of Kaspersky Next XDR Expert are located:
   • nfs-common
   • tar
   • iscsi-package
   • wireguard
   • wireguard-tools

   KDT will try to install these packages during the deployment from the package repository. You can also install these packages manually. Ensure that the libnfs12 package is installed on the worker nodes during the package installation.

7. Reserve static IP addresses for the target hosts, for the Kubernetes cluster gateway, and for the DBMS (if the DBMS is installed inside the cluster).

   The Kubernetes cluster gateway is intended for connecting to the Kaspersky Next XDR Expert components installed inside the Kubernetes cluster.

8. On the target hosts, create user accounts that will be used for the Kaspersky Next XDR Expert deployment.

   Add the created user accounts to the /etc/sudoers file.

9. Configure the SSH connection between the administrator and target hosts:
   1. On the administrator host, generate SSH keys by using the ssh-keygen utility.
   2. After you generate a pair of SSH keys, copy the public key to every target host (for example, to the /home/<user_name>/.ssh directory).
10. For proper function of the Kaspersky Next XDR Expert components, provide network access between the target hosts and open the required ports on the firewall of the administrator and target hosts, if necessary.
11. Configure time synchronization over Network Time Protocol (NTP) on the administrator and target hosts.
12. If necessary, prepare custom certificates for working with Kaspersky Next XDR Expert public services.

    You can use one intermediate certificate that is issued off the organization's root certificate or leaf certificates for each of the services. The prepared custom certificates will be used instead of a self-signed certificates.