Swprobe

A probing middleware service for Swift that gathers metrics about request and flushes those to statsd (https://github.com/etsy/statsd)

Quick Installation

1. Check out this repository

2. Run python setup.py install

3. Alter your proxy.conf pipeline to include probe:

   [pipeline:main] pipeline = healthcheck probe cache auth staticweb proxy-server

4. Add a section for the probe WSGI filter:

   [filter:probe] use = egg:swprobe#probe host = localhost port = 8125 prefix = swift.dev. suffix =

5. Restart the proxy

6. If you're running statsd and graphite, you should see the metrics popping up in graphite

Configuration

• host: host running statsd
• port: UDP port used by statsd
• prefix: all stats names will have this value as prefix
• suffix: all stats names will have this value as suffix

Metrics

The following metrics are created:

1. Timers:

   auth - time spent in miliseconds on requests to /auth <account_name>.<HTTP_METHOD>_<HTTP_STATUS> - per account timings/counts for HTTP methods used and http responses sent.

2. Counters:

   Counters for all the timers listed <account_name>.bytes_uploaded - number of bytes uploaded to account <account_name>.bytes_downloaded - number of bytes downloaded

Disclaimer

This has not yet been tested with production workloads