Assigning IP addresses with OS tools

DCImanager 6 assigns IP addresses to the server automatically during the operating system (OS) reinstallation. You can assign IP addresses to the server manually. The procedure of assigning IP addresses depends on the server's operating system.

Note

Be careful when changing network settings manually. If you specify incorrect data, the server’s network connection may be disrupted. In this case, remote work with the server will only be possible via BMC.

AlmaLinux

To assign an IP address:

1. Connect to the server via SSH with superuser permissions.

2.  To assign an IPv4 address

   Specify the network settings in /etc/sysconfig/network-scripts/ifcfg-<interface> file, where <interface> is the name of the network interface. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

   Example of settings

   DEVICE=eth0
   ONBOOT=yes
   BOOTPROTO=static
   IPADDR=192.168.1.100
   NETMASK=255.255.255.0
   GATEWAY=192.168.1.1

   CODE

    Comments to the example

   DEVICE — interface name

   IPADDR — IP address

   NETMASK — network mask

   GATEWAY — gateway IP address

    To assign an IPv6 address

   Add IPv6 settings to the network interface file /etc/sysconfig/network-scripts/ifcfg-<interface>, where <interface> is the interface name. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

   Example of settings

   IPV6INIT=yes
   IPV6ADDR=2001:0DB8::/64
   IPV6_DEFAULTGW=2001:0DB8::1

   CODE

    Comments to the example

   IPV6ADDR — IPv6 address with network prefix

   IPV6_DEFAULTGW — gateway IP address

3. Restart the NetworkManager software: 

   systemctl restart NetworkManager

   BASH

4. Reconnect the network interface:

   nmcli device disconnect <interface> && nmcli device connect <interface>

   BASH
    Comments to the command

   <interface> — name of the network interface

CentOS

To assign an IP address:

1. Connect to the server via SSH with superuser permissions.

2.  To assign an IPv4 address

   Specify the network settings in /etc/sysconfig/network-scripts/ifcfg-<interface> file, where <interface> is the name of the network interface. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

   Example of settings

   DEVICE=eth0
   ONBOOT=yes
   BOOTPROTO=static
   IPADDR=192.168.1.100
   NETMASK=255.255.255.0
   GATEWAY=192.168.1.1

   CODE

    Comments to the example

   DEVICE — interface name

   IPADDR — IP address

   NETMASK — network mask

   GATEWAY — gateway IP address

    To assign an IPv6 address

   1. Enable IPv6 support in the OS. Add the following line to the /etc/sysconfig/network file:

      NETWORKING_IPV6=yes

      CODE

   2. Add IPv6 settings to the network interface file /etc/sysconfig/network-scripts/ifcfg-<interface>, where <interface> is the interface name. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

      Example of settings

      IPV6INIT=yes
      IPV6ADDR=2001:0DB8::/64
      IPV6_DEFAULTGW=2001:0DB8::1

      CODE
       Comments to the example

      IPV6ADDR — IPv6 address with network prefix

      IPV6_DEFAULTGW — gateway IP address

3. Restart the network service:

   systemctl restart network

   BASH

Debian, Ubuntu

To assign an IP address:

1. Connect to the server via SSH with superuser permissions.

2. Specify the network settings in /etc/network/interfaces:

    To assign an IPv4 address

   Example of settings

   iface ens3 inet static
     address 192.168.2.100
     netmask 255.255.255.0
     gateway 192.168.2.1
     auto ens3

   BASH

    Comments to the example

   ens3 — network interface

   address — IP address

   netmask — network mask

   gateway — gateway IP address

    To assign an IPv6 address

   Example of settings

   iface ens3 inet6 static
     address 2001:0DB8::
     netmask 64
     gateway 2001:0DB8::1
     auto ens3

   BASH

    Comments to the example

   ens3 — network interface

   address — IPv6 address

   netmask — subnet prefix length

   gateway — gateway IP address

3. Restart the networking service:

   systemctl restart networking

   BASH