Re: Check Cluster Health

2018-07-11 Thread Thouraya TH
Hi, Ok. Thanks a lot for answers. Kind regards. 2018-07-11 16:13 GMT+01:00 Furkan Cifci : > No, you dont need to install Prometheus on each node. Install Prometheus > on one machine and configure it. For basic configuration use this > documentation:

Re: Check Cluster Health

2018-07-11 Thread Furkan Cifci
No, you dont need to install Prometheus on each node. Install Prometheus on one machine and configure it. For basic configuration use this documentation: https://www.robustperception.io/monitoring-cassandra-with-prometheus/ You need to use exporter on each node for collecting metrics. Node

Re: Check Cluster Health

2018-07-11 Thread Thouraya TH
Hi all; Please, i have a history of the state of each node in my data center. an history about the failure of my cluster (UN: node up, DN: node down). Here is some lines of the history: 08:51:36 UN 127.0.0.1 08:51:36 UN 127.0.0.2 08:51:36 UN 127.0.0.3 08:53:50 DN 127.0.0.1

Re: Check Cluster Health

2018-07-06 Thread Thouraya TH
2018-07-06 13:04 GMT+01:00 Simon Fontana Oscarsson < simon.fontana.oscars...@ericsson.com>: > Running nodetool status is okay if you want the simplest solution. > But it generates a lot of output and creates a new JMX connection for > every execution. > Cassandra uses JMX to expose metrics via

Re: Check Cluster Health

2018-07-06 Thread Simon Fontana Oscarsson
Running nodetool status is okay if you want the simplest solution. But it generates a lot of output and creates a new JMX connection for every execution. Cassandra uses JMX to expose metrics via mbeans. Read this to get a first understanding: 

Re: Check Cluster Health

2018-07-06 Thread Thouraya TH
Hi, Thank you so much for answers. Please, can you explain more what's metric libraries ? and give me some examples ? Using nodetool status, to generate the history of my data center, i intend to proceed as follows: >From a node A: For i 1 ..24 hours (every 2 minutes do) ./nodetool status

Re: Check Cluster Health

2018-07-04 Thread Anthony Grasso
Hi, Yes, you can use nodetool status to inspect the health/status of the cluster. Using *nodetool status * will show the cluster health/status as well as the amount of data that each node has for the specified **. Using *nodetool status* without the argument will only show the cluster

Re: Check Cluster Health

2018-07-01 Thread Thouraya TH
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 -- AddressLoad Tokens OwnsHost ID Rack UN 127.0.0.1 47.66 KB

Re: Check Cluster Health

2018-06-28 Thread Rahul Singh
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 , wrote: > Hi, > > Please, how can check the health of my cluster / data center using cassandra

Check Cluster Health

2018-06-28 Thread Thouraya TH
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.