(9/17): lvm2-libs-2.02.186-7.el7_8.2.x86_64.rpm                                                                 | 1.1 MB  00:00:00
warning: /var/cache/yum/x86_64/7/centos-gluster41/packages/glusterfs-4.1.9-1.el7.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID e451e5b5: NOKEY
Public key for glusterfs-4.1.9-1.el7.x86_64.rpm is not installed

rpm -q gpg-pubkey