[Gluster-users] What’s the purpose of /var/lib/glusterd/nfs/secret.pem.pub ?

[Adam Ru]

Some time ago I read and followed this quide for installing and
configuring Gluster:
http://blog.gluster.org/linux-scale-out-nfsv4-using-nfs-ganesha-and-glusterfs-one-step-at-a-time/

with steps to create certificate:

/var/lib/glusterd/nfs/secret.pem
/var/lib/glusterd/nfs/secret.pem.pub

and distribute public and private cert file among nodes.

I’ve just tried new Gluster 3.12 and I forgot to create the
certificate and I created new cluster and it worked:

sudo gluster peer probe SecondNode
peer probe: success.
sudo gluster peer probe ThirdNode
peer probe: success.

After I mounted Gluster volumes everything seems to work and Gluster
replicates files.
So why do I need the certificate?

Thank you.

Kind regards,
Adam