Howto Set Static IP on boot in initramfs for dropbear or other purposes NFS, Linux, Debian, Ubuntu, CentOS

This is only really necessary in the case you don't want DHCP.  If you are dealing with an encrypted LUKS server on the internet, you will often want to have a static IP so you know which IP to connect to (or if you have a semi-static IP assigned by DHCP).

SET IP Address by /etc/initramfs-tools/initramfs.conf

IP Address=192.168.1.27
Gateway=192.168.1.1
Subnet Mask: 255.255.255.0
Hostname=myhome.com

IP=192.168.1.27::192.168.1.1:255.255.255.0:myhost.com

The format is below, note the "double colon" :: after the IP.  If you don't do that, things won't work properly including being unable to set the gateway and/or hostname errors.
**Double note that the kernel documentation states otherwise that a single color is to be used for all field separation, but at least in most newer Debian's this does not work.

Set IP for certain NIC

You could also add another ":" after hostname which would indicate which NIC device the IP would be applied to.  Otherwise by default it is the first NIC.

#eg if you wanted to have it use ens3 then change the line by adding another colon and the device eg. :ens3
IP=192.168.1.27::192.168.1.1:255.255.255.0:myhost.com:ens3

Follow this guide if you want your NICs named properly (eg. eth0, eth1) so you don't have to wonder whether you have an eno1, ens3 etc.

Final Step

Make sure you update initramfs or this will not be applied or work until you do.

sudo update-initramfs -u


Tags:

howto, static, ip, initramfs, dropbear, purposes, nfs, linux, debian, ubuntu, centosthis, dhcp, encrypted, luks, server, semi, assigned, etc, conf, gateway, subnet, hostname, myhome, myhost, format, quot, colon, unable, errors, kernel, documentation, separation, newer, nic, indicate, applied, default, eg, ens, adding, update, sudo,

Latest Articles

  • How to allow SSH root user access in Linux/Debian/Mint/RHEL/Ubuntu/CentOS
  • Ansible Tutorial - Playbook How To Install From Scratch and Deploy LAMP + Wordpress on Remote Server
  • Ceph Install Errors on Proxmox / How To Fix Solution
  • Proxmox Update Error https://enterprise.proxmox.com/debian/pve bullseye InRelease 401 Unauthorized [IP: 144.217.225.162 443]
  • QEMU/KVM How to Hot-add A Virtual Disk .raw/.qcow2 via QEMU Monitor Commands
  • Proxmox How To Enable Ceph Distributed Storage Cluster with OSD and Pools
  • pulseaudio issue on QEMU/KVM guest VM when microphone is replugged/unplugged pulseaudio: pa_threaded_mainloop_lock failed pulseaudio: Reason: Invalid argument
  • Ubuntu Linux Mint - Volume Control Stopped Working
  • Proxmox Services Won't Start Failed to start The Proxmox VE cluster filesystem. Proxmox VE firewall. PVE Status Daemon. Proxmox VE scheduler. PVE Cluster HA Resource Manager Daemon. PVE Local HA Resource Manager Daemon.
  • Proxmox Guide FAQ / Errors / Howto
  • Virtualbox Vbox Issue Cannot Enable Nested Virtualization Button is Grayed/Greyed Out and Unclickable HowTo Solution
  • Virtualbox VBOX Howto Port Forward To Guests
  • Linux Ubuntu Debian Centos Mint - How To Check if Intel VT-x or AMD-V Hardware Virtualization is Enabled?
  • Linux Howto Zip Multiple Files and Directories
  • Windows Cannot Format USB drive Device Media is Write Protected Error Solution
  • Linux Mint 20 cannot install snapd missing solution
  • Virtualbox VBOX How To Install Guest-Utils/GuestUtils so drag and drop and clipboard works Ubuntu Mint Debian Linux
  • How to install Kubernetes with microk8s and deploy apps on Debian/Mint/Ubuntu Linux
  • vi how to delete everything to the end of the line or the rest of the line from the cursor
  • Cisco Howto Configure Console Port/Terminal/Comm Server with Async Cable Setup