nodetool - Knowing which real node is up in a Cassandra cluster under virtual node setting -

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virtual node powerful setting in cassandra ease burden of assigning proper initial token each node, found pain when reading output of nodetool ring each node described tons of lines. example:

node-1  155             normal  228.55 kb       8.31%               7196378057413163154 node-1  155             normal  228.55 kb       8.31%               7215375135797395653 node-1  155             normal  228.55 kb       8.31%               7299851409832649823 node-1  155             normal  228.55 kb       8.31%               7361899028342316034 node-1  155             normal  228.55 kb       8.31%               7470359832465044920 node-1  155             normal  228.55 kb       8.31%               7631123206720404219 node-1  155             normal  228.55 kb       8.31%               7675034684873781539 node-1  155             normal  228.55 kb       8.31%               7871044212864174985 node-1  155             normal  228.55 kb       8.31%               7888407753199222932 node-1  155             normal  228.55 kb       8.31%               7916197345035903777 node-1  155             normal  228.55 kb       8.31%               7940203367286725631 node-1  155             normal  228.55 kb       8.31%               7981190016602200507 node-1  155             normal  228.55 kb       8.31%               8015518064513163806 node-1  155             normal  228.55 kb       8.31%               8018007479871405889 .....

if goal know real node up, , how data each real node possesses, can know how should it?

you should use nodetool status, outputs 1 line per node e.g.

$ bin/nodetool status datacenter: datacenter1 ======================= status=up/down |/ state=normal/leaving/joining/moving --  address    load       tokens  owns   host id                               rack un  127.0.0.1  152.64 kb  256     100.0%  22f70e40-4070-483a-9fa6-e272556b7164  rack1

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