From my testing MySQL Cluster on the Raspberry Pi’s I thought I’d share this little extract, just in case someone tries the same, some day.. somewhere.. why? I don’t know.
Ok, so when we pull the plug on one of the pi’s, we have of each component falling down, but because one of them is the arbitrator (node-id=2) then cluster falls over.
Before the ‘accident’:
ndb_mgm -e show
Connected to Management Server at: localhost:1186
[ndbd(NDB)] 2 node(s)