Etcd is a high availability key-value store, implementing the RAFT
algorithm to deal with failover within the etcd cluster. Popular
in the Docker community as a shared store of small but important
data in a distributed application.
The packages for RHEL 8 and RHEL 7 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 8 and RHEL 7, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 8 with the following command: