How To Install ucarp on Fedora 34

ucarp is Common Address Redundancy Protocol (CARP) for Unix

Introduction

In this tutorial we learn how to install ucarp on Fedora 34.

What is ucarp

UCARP allows a couple of hosts to share common virtual IP addresses in order to provide automatic failover. It is a portable userland implementation of the secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD’s alternative to the patents-bloated VRRP). Strong points of the CARP protocol are signed messages, interoperability between different operating systems and no need for any dedicated extra network link between redundant hosts.

We can use yum or dnf to install ucarp on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install ucarp.

Install ucarp on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ucarp using dnf by running the following command:

sudo dnf -y install ucarp

Install ucarp on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ucarp using yum by running the following command:

sudo yum -y install ucarp

How To Uninstall ucarp on Fedora 34

To uninstall only the ucarp package we can use the following command:

sudo dnf remove ucarp

ucarp Package Contents on Fedora 34

/etc/ucarp
/etc/ucarp/vip-001.conf.example
/etc/ucarp/vip-001.pwd.example
/etc/ucarp/vip-common.conf
/usr/lib/.build-id
/usr/lib/.build-id/fd
/usr/lib/.build-id/fd/1cb8c805028f94b2bceb1731f2601fa3726c35
/usr/lib/systemd/system/[email protected]
/usr/libexec/ucarp
/usr/libexec/ucarp/ucarp
/usr/libexec/ucarp/vip-down
/usr/libexec/ucarp/vip-up
/usr/sbin/ucarp
/usr/share/doc/ucarp
/usr/share/doc/ucarp/AUTHORS
/usr/share/doc/ucarp/ChangeLog
/usr/share/doc/ucarp/NEWS
/usr/share/doc/ucarp/README
/usr/share/licenses/ucarp
/usr/share/licenses/ucarp/COPYING
/usr/share/locale/en@boldquot/LC_MESSAGES/ucarp.mo
/usr/share/locale/en@quot/LC_MESSAGES/ucarp.mo

References

Summary

In this tutorial we learn how to install ucarp on Fedora 34 using yum and dnf.