The NRPE exporter exposes metrics on commands sent to a running NRPE daemon.
Building and running
go build nrpe_exporter.go ./nrpe_exporter
Visiting http://localhost:9275/export?command=check_load&target=127.0.0.1:5666 will return metrics for the command 'check_load' against a locally running NRPE server.
Building with Docker
docker build -t nrpe_exporter . docker run -d -p 9275:9275 --name nrpe_exporter
The nrpe_exporter requires little to no configuration.
The few options available such as logging level and the port to run on are configured via command line flags.
./nrpe_exporter -h to view all available flags.
global: scrape_interval: 10s scrape_configs: - job_name: nrpe metrics_path: /export params: command: [check_load] # Run the check_load command. static_configs: - targets: # Targets to run the specified command against. - '127.0.0.1:5666' - 'example.com:5666' relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: 127.0.0.1:9275 # Nrpe exporter.
Add URL query parameter
ssl=true to enable SSL for the NRPE connection, e.g.
params: command: [check_load] ssl: [true]
NRPE requires the ADH ciphersuite which is not built by default in modern version of openssl. If the following command returns nothing then you will not be able to use it:
openssl ciphers -s -v ALL | grep ADH # remove -s on older versions of openssl
The solution is to build a statically-linked
nrpe_exporter binary on an
older server - Ubuntu 16.04 works.
go build -a -ldflags '-extldflags "-static -ldl"'
A future version of golang may provide a simpler way of doing this.