How to map static IP address using dnsmasq under LXD (Linux containers)

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Mapping a static IP address using dnsmasq under LXD (Linux Containers) can be done as follows:

  1. Install dnsmasq: First, you will need to install dnsmasq on the host machine using the following command:
sudo apt-get install dnsmasq
  1. Configure dnsmasq: Next, you will need to configure dnsmasq to assign a static IP address to a container. You can do this by adding the following configuration to /etc/dnsmasq.conf:
dhcp-host=<container_name>,<container_ip>

Replace <container_name> with the name of your container and <container_ip> with the desired static IP address.

  1. Restart dnsmasq: After adding the configuration, restart dnsmasq with the following command:
sudo systemctl restart dnsmasq
  1. Configure container network: Finally, you will need to configure the container’s network to use the host’s dnsmasq for DHCP. You can do this by adding the following configuration to the container’s network profile:
config:
ipv4.address: <container_ip>/24
ipv4.nat: "false"
ipv4.dhcp: "off"
ipv4.dns: <host_ip>

Replace <container_ip> with the static IP address you assigned to the container and <host_ip> with the IP address of the host machine.

This configuration will assign the specified static IP address to the container and use the host’s dnsmasq for DHCP.

Note: The exact steps for mapping a static IP address using dnsmasq under LXD may vary slightly depending on your setup and configuration. For more information, see the LXD documentation: https://linuxcontainers.org/lxd/docs/.

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