Create and configure a reserved IP address

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Overview

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Billing

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Reserve an IP address

1. In the Gcore Customer Portal, navigate to Cloud > Networking.

2. Open the Reserved IPs page.

3. Click Reserve new IP.

4. Select the network type:

• Public (for external network). A public IP address can be created immediately.
• Private (for internal network). For this option, select the network and subnetwork in which the address will be created.
• Dedicated public (for a dedicated public network). Select this option if a dedicated public network is configured for the project.

5. (Optional) In the IP Family section, select the IP version: IPv4, IPv6, or Dual (IPv4 + IPv6).

6. Click Reserve IP.

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Assign a reserved IP to a VM

• During VM creation
• After VM creation

Refer to the VM creation guide.

1. In the Virtual Machine settings, open the Networking tab.

If the machine is already connected to the target subnetwork, detach it first before assigning a new IP. This removes the existing IP from the interface.

2. Add a new interface (public or private) and enable the Use reserved IP toggle.

3. Select the reserved IP and click Add.

The IP will be assigned to the Virtual Machine.

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Configure the network interface in the operating system

sudo dhcpcd <interface_name>

sudo dhcpcd enp4s0

sudo ip link set <interface_name> up
sudo ip addr add <ip_address>/<prefix> dev <interface_name>
sudo ip route add <subnet_cidr> via <gateway_ip> dev <interface_name>

sudo ip link set enp4s0 up
sudo ip addr add 172.18.220.100/22 dev enp4s0

sudo bash -c 'cat <<EOF > /etc/netplan/51-new-interface.yaml
network:
  version: 2
  ethernets:
    enp4s0:
      dhcp4: true
EOF'

sudo netplan apply

sudo bash -c 'cat <<EOF > /etc/netplan/51-new-interface.yaml
network:
  version: 2
  ethernets:
    enp4s0:
      dhcp4: false
      addresses:
        - 192.168.1.10/24
      gateway4: 192.168.1.1
      nameservers:
        addresses:
          - 95.85.95.85
          - 2.56.220.2
EOF'

sudo netplan apply

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Detach a reserved IP from a VM

1. Open the Virtual Machine settings.
2. Go to the Networking tab.
3. Expand the interface that contains the reserved IP.
4. Click the three-dot menu next to the subnetwork row.
5. Select Detach Subnetwork.

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Assign a reserved IP to a load balancer

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Find a resource with reserved IP

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Delete a reserved IP

1. In the Gcore Customer Portal, navigate to Cloud > Networking.

2. Open the Reserved IPs page.
3. Click the three-dot icon next to the target IP.
4. Select Delete.