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9.3. Configuring Network Encryption for an existing Trusted Storage Pool

You can configure network encryption for an existing Red Hat Gluster Storage Trusted Storage Pool for both I/O encryption and management encryption.

9.3.1. Enabling I/O encryption for a Volume
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Enable the I/O encryption between the servers and clients:
  1. Unmount the volume on all the clients. 
    # umount mount-point# umount mount-point
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  2. Stop the volume. 
    # gluster volume stop VOLNAME# gluster volume stop VOLNAME
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  3. Set the list of common names for clients allowed to access the volume. Be sure to include the common names of all the servers. 
    # gluster volume set VOLNAME auth.ssl-allow 'server1,server2,server3,client1,client2,client3'# gluster volume set VOLNAME auth.ssl-allow 'server1,server2,server3,client1,client2,client3'# gluster volume set VOLNAME auth.ssl-allow 'server1,server2,server3,client1,client2,client3'# gluster volume set VOLNAME auth.ssl-allow 'server1,server2,server3,client1,client2,client3'
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  4. Enable client.ssl and server.ssl on the volume. 
    # gluster volume set VOLNAME client.ssl on
# gluster volume set VOLNAME server.ssl on
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  5. Start the volume. 
    # gluster volume start VOLNAME# gluster volume start VOLNAME
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  6. Mount the volume from the new clients. For example, to manually mount a volume and access data using Native client, use the following command: 
    # mount -t glusterfs server1:/test-volume /mnt/glusterfs
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9.3.2. Enabling Management Encryption
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Though, Red Hat Gluster Storage can be configured only for I/O encryption without using management encryption, management encryption is recommended. On an existing installation, with running servers and clients, schedule a downtime of volumes, applications, clients, and other end-users to enable management encryption.
You cannot currently change between unencrypted and encrypted connections dynamically. Bricks and other local services on the servers and clients do not receive notifications from glusterd if they are running when the switch to management encryption is made.
  1. Unmount the volume on all the clients. 
    # umount mount-point# umount mount-point
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  2. Stop all the volumes. 
    # gluster volume stop VOLNAME# gluster volume stop VOLNAME
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  3. Stop glusterd on all servers. 
    # service glusterd stop
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  4. Stop all gluster-related processes on all servers. 
    # pkill glusterfs
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  5. Create the /var/lib/glusterd/secure-access file on all servers and clients. 
    # touch /var/lib/glusterd/secure-access
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  6. Start glusterd on all the servers. 
    # service glusterd start
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  7. Start all the volumes 
    # gluster volume start VOLNAME# gluster volume start VOLNAME
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  8. Mount the volume on all the clients. For example, to manually mount a volume and access data using Native client, use the following command: 
    # mount -t glusterfs server1:/test-volume /mnt/glusterfs
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