Add repository and import GPG key cat << EOF | sudo tee /etc/yum.repos.d/opennms-meridian.repo [meridian] name=Meridian for Red Hat Enterprise Linux and CentOS baseurl=https://REPO_USER:REPO_PASS@meridian.opennms.com/packages/2021/stable/rhel8(1) gpgcheck=1 gpgkey=http://yum.opennms.org/OPENNMS-GPG-KEY EOF sudo rpm --import https://yum.opennms.org/OPENNMS-GPG-KEY 1 Replace the REPO_USER and REPO_PASS with your Meridian subscription credentials.