Preliminary check

  1. Make sure that the server is physical or virtual based on KVM virtualization. Other types of virtualization are not supported.
  2. Make sure that the server hardware meets the requirements.

Operating system

  1. Install one of the supported operating systems on the server. When installing, use the official unmodified distribution of the OS in the minimal edition without third-party repositories. Do not install any additional software or system services on the server.
  2. Install OS updates:

    1. Alma Linux 8:

      dnf update
      BASH

    2. CentOS 7:

      yum update
      BASH

    3. Astra Linux, Ubuntu 20.04:

      apt update && apt dist-upgrade
      BASH

Network settings

  1. Make sure that the location server is in the same L2 network segment (broadcast domain) as the managed servers without using Proxy-ARP and L3 tunnels. This is necessary because DHCP is used to assign an IP address to the server when booting over the network. DHCP requires the ability to exchange broadcast traffic between the managed server and the location server.
  2. If STP is enabled on your network equipment, make sure that it is configured correctly on the switch ports to which the managed servers are connected. If improperly configured, STP can switch a switch port to blocking status at inopportune times, preventing the server from booting over the network. It is not recommended to use the RSTP mode.
  3. Make sure that incoming network connections from the DCImanager 6 platform server to the following location server ports are allowed:
    1. SSH: port 22/tcp (standard) or another port to which the sshd service is bound.
    2. Redis: 7996/tcp, to connect to the Redis database management system.
  4. Make sure that incoming network connections from managed servers to the following ports of the location server are allowed:
    1. DHCP/BOOTP: 67/udp.
    2. TFTP: 69/udp.
    3. NFS: 111, 2049, 32767/tcp.
    4. SMB: 445/tcp.
    5. Nginx: 1500/tcp.