Hi, Yes, you can use nodetool status to inspect the health/status of the cluster. Using *nodetool status <keyspace>* will show the cluster health/status as well as the amount of data that each node has for the specified *<keyspace>*. Using *nodetool status* without the <keyspace> argument will only show the cluster health/status.
Unless there is a special reason for using nodetool to capture history, you may want to consider using metric libraries to capture and push information about each node to a metric server. It is much easier to view the data captured on the metric server as there are tools already made for this. Using metrics libraries will save you time creating and maintaining a parser for the nodetool output. It also makes monitoring the health of cluster very easy. Regards, Anthony On Sun, 1 Jul 2018 at 20:19, Thouraya TH <thouray...@gmail.com> wrote: > Hi, > Thank you so much for answer. > Please, is it possible to use this command ? > > nodetool status mykeyspace > > Datacenter: datacenter1 > ======================= > Status=Up/Down > |/ State=Normal/Leaving/Joining/Moving > -- Address Load Tokens Owns Host ID > Rack > UN 127.0.0.1 47.66 KB 1 33.3% > aaa1b7c1-6049-4a08-ad3e-3697a0e30e10 rack1 > UN 127.0.0.2 47.67 KB 1 33.3% > 1848c369-4306-4874-afdf-5c1e95b8732e rack1 > UN > > Thank you so much. > Kind regards. > > 2018-06-29 1:40 GMT+01:00 Rahul Singh <rahul.xavier.si...@gmail.com>: > >> >> >> When you run TPstats or Tablestats subcommands in nodetool you are >> actually accessing data inside Cassandra via JMX. >> >> You can start there at first. >> >> Rahul >> On Jun 28, 2018, 10:55 AM -0500, Thouraya TH <thouray...@gmail.com>, >> wrote: >> >> Hi, >> >> Please, how can check the health of my cluster / data center using >> cassandra ? >> In fact i'd like to generate a hitory of the state of each node. an >> history about the failure of my cluster ( 20% of failure in a day, 40% of >> failure in a day etc...) >> >> Thank you so much. >> Kind regards. >> >> >
