gluster-zeroconf is project that provides an autodiscovery mechanism for
Gluster Storage Servers. It uses Avahi to register a
GlusterD service, and provides gluster-discovery that can be used to display
the storage servers that announce themselves.
The recommended installation method is though RPMs. Building the RPMs is trivial:
$ python setup.py sdist
$ rpmbuild -ta dist/gluster-zeroconf-0.1.0.tar.gz
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On a storage server that should become discoverable, install the gluster-zeroconf-avahi RPM. This will automatically pull in the avahi package as well. Avahi should haveb be enabled after it got installed.
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On at least one storage server, install the python-gluster-zeroconf RPM. This package provides the
gluster-discoverytool.
After installation, run gluster-discovery to list the storage servers that
announce themselves. It is possible to let gluster-discovery do a gluster peer probe for all discovered servers with:
\# gluster-discovery probe
Avahi uses the Zeroconf protocols (multicat DNS/DNS-SD) for service announcement and discovery. For this to work, multicast needs to be available on the (local) network. There are most likely limitations in public/private cloud environments and networks that span multiple subnets.
This project has just started as a proof-of-concept and there are many improvements possible. The following is a list in no particular order:
- filter servers that do not need
gluster peer probe - report a warning for a failed
gluster peer probe - resolve the hostnames of the discovered storage servers
- ...