I've been sat down crosseyed in front of snoop and tcpdump lately seeing
what our cluster is up to, and wondered if there were any higher level tools
for looking at cluster GMS traffic?
From a quick glance over the shoal design docs, it looks like it would
be possible to add a SPECTATOR member to the cluster who could receive messages
(and log/graph them etc.) without disrupting cluster operation or
requiring a lot of debug-level
logging on the cluster instances themselves.
Does anybody know of such a tool, or where I could look to get started
writing my own?