Jack Moore

Email: jack(at)jmoore53.com
Project Updates

UCARP Virtual IPs for Proxmox NFS

15 Dec 2020 » system configuration, sysadmin, homelab, networking, cluster, kubernetes

Common Address Redundancy Protocol (CARP) is a way to achieve the sharing of IP Addresses.

UCARP for NFS

Local Config

apt install ucarp

Server 1 /etc/network/interfaces:

auto vmbr1
iface vmbr1 inet static
	address 10.0.0.2/24
	gateway 10.0.0.254
	bridge-ports eno3
	bridge-stp off
	bridge-fd 0
  	#######################
  	# ucarp configuration
  	#######################
  	# vid : The ID of the virtual server [1-255]
  	ucarp-vid 4
  	# vip : The virtual address
  	ucarp-vip 10.0.0.253
  	# password : A password used to encrypt Carp communications
  	ucarp-password password
  	# advskew : Advertisement skew [1-255]
  	ucarp-advskew 1
  	# advbase : Interval in seconds that advertisements will occur
  	ucarp-advbase 1
  	# master : determine if this server is the master
  	ucarp-master yes

iface vmbr1:ucarp inet static
        address 10.0.0.253
        netmask 255.255.255.0

Server 2 /etc/network/interfaces:

auto vmbr1
iface vmbr1 inet static
	address 10.0.0.3/24
	gateway 10.0.0.254
	bridge-ports eno3
	bridge-stp off
	bridge-fd 0
  	#######################
  	# ucarp configuration
  	#######################
  	# vid : The ID of the virtual server [1-255]
  	ucarp-vid 4
  	# vip : The virtual address
  	ucarp-vip 10.0.0.253
  	# password : A password used to encrypt Carp communications
  	ucarp-password password
  	# advskew : Advertisement skew [1-255]
  	ucarp-advskew 100
  	# advbase : Interval in seconds that advertisements will occur
  	ucarp-advbase 1
  	# master : determine if this server is the master
  	ucarp-master no

iface vmbr1:ucarp inet static
        address 10.0.0.253
        netmask 255.255.255.0

It works, and it’s great for application servers that do the same thing, but its not ideally what I need for NFS. On to keepalived

© Jack Moore