I have figured it out.After a reinstall from UI , I have managed to obtain the necessary change.Here is what I have used: hosted-engine --set-shared-config mnt_options 'backup-volfile-servers=gluster2:ovirt3' --type=he_shared hosted-engine --set-shared-config mnt_options 'backup-volfile-servers=gluster2:ovirt3' --type=he_local hosted-engine --set-shared-config storage 'gluster1:/engine' --type=he_local hosted-engine --set-shared-config storage 'gluster1:/engine' --type=he_shared And the result after reinstall with deploy is as expected: # grep -E 'storage|mnt_options' /etc/ovirt-hosted-engine/hosted-engine.confstorage=gluster1:/enginemnt_options=backup-volfile-servers=gluster2:ovirt3 В събота, 12 октомври 2019 г., 15:33:15 ч. Гринуич+3, Strahil <hunter86_bg(a)yahoo.com&gt; написа: Hello All, Recently I wanted to enable nested virtualization on my cluster  and thus I had  to redeploy the first host. Sadly, some time ago I have taken the shortcut  and changed  the values in /etc/ovirt-hosted-engine/hosted-engine.conf locally in order  to replace  the gluster host and mount options. Thus, after the redeploy, I had to restore  the old config in order to be able to mount the shared storage. Now I want to make the proper changes and according to an old thread I need to run the following commands , but they fail. Can some one advise what is the correct syntax ? [root@ovirt1 ~]#  hosted-engine --set-shared-config storage gluster1:/engine Duplicate key storage, please specify the key type. Available types are: ['he_local', 'he_shared'] [root@ovirt1 ~]# hosted-engine --set-shared-config mnt_options backup-volfile-servers=gluster2:ovirt3 Duplicate key mnt_options, please specify the key type. Available types are: ['he_local', 'he_shared'] Best  Regards, Strahil  Nikolov Hello All, Recently I wanted to enable nested virtualization on my cluster  and thus I had  to redeploy the first host. Sadly, some time ago I have taken the shortcut  and changed  the values in /etc/ovirt-hosted-engine/hosted-engine.conf locally in order  to replace  the gluster host and mount options. Thus, after the redeploy, I had to restore  the old config in order to be able to mount the shared storage. Now I want to make the proper changes and according to an old thread I need to run the following commands , but they fail. Can some one advise what is the correct syntax ? [root@ovirt1 ~]#  hosted-engine --set-shared-config storage gluster1:/engine Duplicate key storage, please specify the key type. Available types are: ['he_local', 'he_shared'] [root@ovirt1 ~]# hosted-engine --set-shared-config mnt_options backup-volfile-servers=gluster2:ovirt3 Duplicate key mnt_options, please specify the key type. Available types are: ['he_local', 'he_shared'] Best  Regards, Strahil  Nikolov