Penguin

Daemon for fast and flexible stats aggregation and collection

Penguin daemon listens for statistics like counters, gauges, histogram ... etc, sent over HTTP and expose them to prometheus. Penguin is inspired by statsd and this article but still it is pretty different from statsd.

Documentation

Download the latest penguin binary. Make it executable from everywhere.

$ curl -sL https://github.com/uptimedog/penguin/releases/download/vx.x.x/penguin_x.x.x_OS.tar.gz | tar xz

Create a config file from config.dist.yml

# App configs
app:
  # App name
  name: ${PENGUIN_NAME:-penguin}

  # Env mode (dev or prod)
  mode: ${PENGUIN_MODE:-dev}

  # HTTP port
  port: ${PENGUIN_PORT:-8000}

  # Hostname
  hostname: ${PENGUIN_HOSTNAME:-127.0.0.1}

  # TLS configs
  tls:
    status: ${PENGUIN_TLS_STATUS:-off}
    crt_path: ${PENGUIN_TLS_PEMPATH:-cert/server.crt}
    key_path: ${PENGUIN_TLS_KEYPATH:-cert/server.key}

  # Global timeout
  timeout: ${PENGUIN_TIMEOUT:-50}

  # API Key
  api_key: ${PENGUIN_API_KEY:-xxxx-xxxx-xxxx-xxxx}

  # Log configs
  log:
    # Log level, it can be debug, info, warn, error, panic, fatal
    level: ${PENGUIN_LOG_LEVEL:-debug}
    # Output can be stdout or abs path to log file /var/logs/penguin.log
    output: ${PENGUIN_LOG_OUTPUT:-stdout}
    # Format can be json
    format: ${PENGUIN_LOG_FORMAT:-json}

Run Penguin

$ penguin server -c /absolute/path/to/config.yml

Send metrics to penguin HTTP endpoint

curl -X POST \
    -H "X-API-KEY: xxxx-xxxx-xxxx-xxxx" \
    -d '{"type":"counter","name":"penguin_orders","help":"the amount of orders.","method":"inc","value":1,"labels":{"type":"trousers"}}' \
    http://127.0.0.1:8000/_listen -v

Configure prometheus to scrape this URL http://127.0.0.1:8000/metrics

To build and run with docker

$ docker build -t clivern/penguin:v1.0.3 .
$ docker run -d -p 8000:8000 clivern/penguin:v1.0.3

# For admins
$ docker push clivern/penguin:v1.0.3

Versioning

For transparency into our release cycle and in striving to maintain backward compatibility, Penguin is maintained under the Semantic Versioning guidelines and release process is predictable and business-friendly.

See the Releases section of our GitHub project for changelogs for each release version of Penguin. It contains summaries of the most noteworthy changes made in each release.

Bug tracker

If you have any suggestions, bug reports, or annoyances please report them to our issue tracker at https://github.com/uptimedog/penguin/issues

Security Issues

If you discover a security vulnerability within Penguin, please send an email to [email protected]

Contributing

We are an open source, community-driven project so please feel free to join us. see the contributing guidelines for more details.

License

© 2020, Uptimedog. Released under MIT License.

Penguin is authored and maintained by @Uptimedog.