Redis Metrics Exporter

Prometheus exporter for Redis metrics.
Supports Redis 2.x and 3.x

Building, configuring, and running

Locally build and run it:

    $ go get
    $ go build
    $ ./redis_exporter <flags>

You can also run it via docker:

    $ docker pull 21zoo/redis_exporter
    $ docker run -d --name redis_exporter -p 9121:9121 21zoo/redis_exporter

Add a block to the scrape_configs of your prometheus.yml config file:

scrape_configs:

...

- job_name: redis_exporter
  target_groups:
  - targets: ['localhost:9121']

...

and adjust the host name accordingly.

Flags

Name	Description
check-keys	Comma separated list of keys to export value and length/size, eg: db3=user_count will export key user_count from db 3. db defaults to 0 if omitted.
redis.addr	Address of one or more redis nodes, comma separated, defaults to localhost:6379.
redis.password	Password to use when authenticating to Redis
namespace	Namespace for the metrics, defaults to redis.
web.listen-address	Address to listen on for web interface and telemetry, defaults to 0.0.0.0:9121.
web.telemetry-path	Path under which to expose metrics, defaults to metrics.

These settings take precedence over any configurations provided by environment variables.

Environment Variables

Name	Description
REDIS_PASSWORD	Password to use when authenticating to Redis

What's exported?

Most items from the INFO command are exported, see http://redis.io/commands/info for details.
In addition, for every database there are metrics for total keys, expiring keys and the average TTL for keys in the database.
You can also export values of keys if they're in numeric format by using the -check-keys flag. The exporter will also export the size (or, depending on the data type, the length) of the key. This can be used to export the number of elements in (sorted) sets, hashes, lists, etc.

What does it look like?

Example PromDash screenshots:

What else?

Open an issue or PR if you have more suggestions or ideas about what to add.