dockerstats

Docker Stats Receiver exercise

• Run Docker container:

  docker run --name sleepy-busybox -d busybox sleep infinity

• Read the Docker Stats Receiver documentation

• Add the docker_stats receiver to the config.yaml file. Set the collection_interval to 3s.

• Run otelcol-contrib for a short amount of time, you should see metrics coming in with the similar log line:

  2022-05-21T19:01:37.982+0200	INFO	loggingexporter/logging_exporter.go:56	MetricsExporter	{"#metrics": 53}
  

• Open the newly created metrics.json file with the text editor of your choice. See what metrics have been collected.

• Run second container which is based on Ubuntu this time:

  docker run --name sleepy-ubuntu -d ubuntu sleep infinity

• Again run otelcol-contrib for a short amount of time, collect some metrics.

• Open the metrics.json file. Notice if you have metrics about both containers.

• Change the config.yaml file by adding the exclude_images key. Exclude the busybox images. Run otelcol-contrib for some time.

• Open the metrics.json file. Notice that metrics about the busybox image based container were not collected.

• Remove both running containers:

  docker rm -f sleepy-ubuntu sleepy-busybox