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 using server's OS tools. The procedure of assigning IP addresses depends on the server's operating system.

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.

DCImanager 6 will not receive information about server's IP addresses specified via OS tools. To keep information in the platform valid, enter the same IP address in the platform. See more about assigning IP addresses in the article Assigning IP addresses.

AlmaLinux

To assign an IP address:

Connect to the server via SSH with superuser permissions.
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
```
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
```
Comments to the example

IPV6ADDR — IPv6 address with network prefix
IPV6_DEFAULTGW — gateway IP address
Restart the NetworkManager software:
```
systemctl restart NetworkManager
```
Reconnect the network interface:
```
nmcli device disconnect <interface> && nmcli device connect <interface>
```
Comments to the command
<interface> — name of the network interface

CentOS

To assign an IP address:

Connect to the server via SSH with superuser permissions.
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
```
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
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
  Comments to the example
  
  IPV6ADDR — IPv6 address with network prefix
  IPV6_DEFAULTGW — gateway IP address
Restart the network service:
```
systemctl restart network
```

Debian, Ubuntu

To assign an IP address:

Connect to the server via SSH with superuser permissions.
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
```
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
```
Comments to the example

ens3 — network interface
address — IPv6 address
netmask — subnet prefix length
gateway — gateway IP address
Restart the networking service:
```
systemctl restart networking
```

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