Prometheus UDP Monitor

Installing

This project is build on each release for Linux & Mac x86, aarch64. You can download these pre-build binaries from the releases tab.

Other Platforms

For other platforms you need to compile this lib yourself:

1. Install Rust and Cargo
2. Clone this repository
3. Run cargo b --release --bin=openmetrics_udpserver
4. The executable is located in target/release/openmetrics_udpserver

Sending Metrics

The UDP-Server will collect sent metrics and make them available through a http endpoint using the openmetrics-text encoding. Sent values for the metric types Min, Average & Peak are just single values (if a value is received twice before collection, the old value gets overridden). The Sum metric type will sum up all received values until a collection happens - then the counter is reset to 0.

From performance perspective you could send thousands of messages per second.

PHP

We provide a small php client

composer require easybill/serverdensity_udp_metric_client

<?php

$client = new ServerdensityUDPAgent();
$client->sendSum('[METRIC_GROUP].[METRIC]', 1);

Data Format

The data format that must be used to send data to the server must be as follows:

1. u16: representation of the metric type (see table below)
2. i32: the data count
3. the utf-8 encoded name of the metric

All numbers must be encoded using big endian byte order.

Metric Types:

Type	ID
Sum	42
Average	43
Peak	44
Min	45

Installing + Supervisor

# replace the download link for the required platform
wget https://github.com/easybill/openmetrics-udp-agent/releases/latest/download/openmetrics_udpserver_linux_x86_64
chmod +x sopenmetrics_udpserver
mv openmetrics_udpserver /usr/local/bin/

now you can test if the server starts:

./openmetrics_udpserver

open /etc/supervisor/conf.d/openmetrics_udpserver.conf and add:

[program:openmetrics_udpserver]
command=openmetrics_udpserver
user=sd-agent
process_name=%(program_name)s
numprocs=1
directory=/tmp
autostart=true
autorestart=true
startsecs=0
startretries=10
stdout_logfile=/var/log/supervisor/%(program_name)s.log
stderr_logfile=/var/log/supervisor/%(program_name)s_error.log
stopsignal=QUIT

Check the update of the new process

supervisorctl status openmetrics_udpserver

Updating the udp server

wget https://github.com/easybill/openmetrics-udp-agent/releases/latest/download/openmetrics_udpserver_linux_x86_64
chmod +x openmetrics_udpserver
supervisorctl stop openmetrics_udpserver
rm /usr/local/bin/openmetrics_udpserver
mv openmetrics_udpserver /usr/local/bin/
supervisorctl start openmetrics_udpserver
supervisorctl status openmetrics_udpserver