How To Install flannel on CentOS 7

In this tutorial we learn how to install flannel on CentOS 7. flannel is Etcd address management agent for overlay networks

Introduction

In this tutorial we learn how to install flannel on CentOS 7.

What is flannel

Flannel is an etcd driven address management agent. Most commonly it is used to manage the ip addresses of overlay networks between systems running containers that need to communicate with one another.

We can use yum or dnf to install flannel on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install flannel.

Install flannel on CentOS 7 Using yum

Update yum database with yum using the following command.

sudo yum makecache

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

sudo yum -y install flannel

Install flannel on CentOS 7 Using dnf

If you don’t have dnf installed you can install DNF on CentOS 7 first. Update yum database with dnf using the following command.

sudo dnf makecache

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

sudo dnf -y install flannel

How To Uninstall flannel on CentOS 7

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

sudo dnf remove flannel

References

Summary

In this tutorial we learn how to install flannel on CentOS 7 using yum and dnf.