After having modified /etc/fstab and rebooted the machine, I can't access to ign.ign2commons.eqiad.wmflabs. I suppose the machine doesn't boot up properly.
$ ssh ign.ign2commons.eqiad.wmflabs channel 0: open failed: connect failed: Connection refused stdio forwarding failed ssh_exchange_identification: Connection closed by remote host
I don't have any information about its current status.