Monitoring Status Using Prometheus Exporters

Continuent has introduced basic support for using Prometheus and Grafana to monitor Tungsten nodes. As of Tungsten software v6.1.4, five key Prometheus exporters have been added to the distribution.

The exporters will allow a Prometheus server to gather metrics for:

• The underlying node "hardware" using an external node_exporter binary added to the distribution.

• The running MySQL server using an external mysqld_exporter binary added to the distribution.

• The Tungsten Replicator using built-in functionality in the replicator binary.

tmonitor is available to assist with the management and testing of the exporters.

To manually test any exporter, get the URL http://{theHost}:{thePort}/metrics either via the curl command or a browser.

shell> curl -s 'http://localhost:9100/metrics' | wc -l
916

shell> curl -s 'http://localhost:9100/metrics' | head -10
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 1.0129e-05
go_gc_duration_seconds{quantile="0.25"} 1.3347e-05
go_gc_duration_seconds{quantile="0.5"} 1.8895e-05
go_gc_duration_seconds{quantile="0.75"} 3.095e-05
go_gc_duration_seconds{quantile="1"} 0.00104028
go_gc_duration_seconds_sum 10.43582891
go_gc_duration_seconds_count 173258
# HELP go_goroutines Number of goroutines that currently exist.

The below table describes the exporters and the ports they listen on.

Exporter	Port	Description	Scope
node	9100	Metrics for the underlying node "hardware"	External
mysql	9104	Metrics for the MySQL server	External
replicator	8091	Metrics for the Tungsten Replicator	Internal