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FHGFS is a high performance parallel file system typically used in clusters.

How would you go about changing the hostname of the management server without breaking connection between the storage and meta servers?

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see here: http://www.fhgfs.com/wiki/FAQ#hostname_changed basically, you just have to define static IDs via the nodeID file.

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    Jun 17, 2014 at 19:24
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Changing mgmtd hostname is easy. Just make sure, that all storage and meta nodes use correct hostname (or even better an IP address) defined in /etc/fhgfs/fhgfs-meta.conf or /etc/fhgfs/fhgfs-storage.conf:

sysMgmtdHost                 = 192.168.1.1

mgmtd node store all data in a directory defined in /etc/fhgfs/fhgfs-mgmtd.conf, e.g.:

storeMgmtdDirectory            = /srv/fhgfs/mgmtd

Then /srv/fhgfs/mgmtd/originalNodeID contains original hostname, there's no need to change that, just make sure that:

$ fhgfs-check-servers

succeeds (ideally test it from all servers).

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