,_---~~~~~----._
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 / __/ /'     ^.  /      \ ^@q   f
[  @f | @))    |  | @))   l  0 _/
 \`/   \~____ / __ \_____/    \
  |           _l__l_           I
  }          [______]           I
  ]            | | |            |
  ]             ~ ~             |
  |                            |
   |                           |
Go-prom

This is based on the Prometheus docs (Instrumenting a GO application for Prometheus).

I just take that post as a base project with the idea to create a simple Go application, deploy on a container and then try some Prometheus metrics on a local and kubernetes premises, in the way to make some tests with custom metrics.

This repo will be public, collaborative to anyone who wants to write some code just for fun.

Fork the Go-prom repo and:

  $ git clone [email protected]:my-github-user/go-prom.git
  $ cd go-prom
  $ docker build -t my-github-user/go-prom .
  $ docker run -p80:2112 my-github-user/go-prom

At this point Prometheus should be serving metrics at http://localhost/metrics.

Run on terminal:

$> curl http://localhost/metrics

And you will be able to see some Prometheus metrics

Now it's time to make thing more complex. Let's try to start a Prometheus+Grafana to see some dashboards with our desired metrics.

First you will need to install docker-compose, configure it will be fine too :P

Then run the following commands:

$> docker-compose build
$> docker-compose up

At this point you will be able to navitage into Prometheus and Grafana (grafana login: admin/eatme)

As you could see there is a dashboard with some basic Go metrics!

Ps. To clean this mess you should run the following commands:

$> docker-compose stop
$> docker-compose rm
$> docker volume rm go-prom_grafana_data go-prom_prometheus_data

Enjoy!

TBD: This will have some Helm and YAML definitions to deploy a Kubernetes environment (with Kind)