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 oliver006/redis_exporter
    $ docker run -d --name redis_exporter -p 9121:9121 oliver006/redis_exporter

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

scrape_configs:

...

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

...

and adjust the host name accordingly.

Flags

Name	Description
debug	Verbose debug output
log-format	Log format, valid options are `txt` (default) and `json`.
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 `redis://localhost:6379`.
redis.password	Password to use when authenticating to Redis
redis.alias	Alias for redis node addr, comma separated.
redis.file	Path to file containing one or more redis nodes, separated by newline. This option is mutually exclusive with redis.addr. Each line can optionally be comma-separated with the fields ,,.
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`.

Redis node addresses can be tcp addresses like redis://localhost:6379, redis.example.com:6379 or unix socket addresses like unix:///tmp/redis.sock.
SSL is supported by using the rediss:// schema, for example: rediss://azure-ssl-enabled-host.redis.cache.windows.net:6380 (note that the port is required when connecting to a non-standard 6379 port, e.g. with Azure Redis instances).

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

Environment Variables

Name	Description
REDIS_ADDR	Address of Redis node(s)
REDIS_PASSWORD	Password to use when authenticating to Redis
REDIS_ALIAS	Alias name of Redis node(s)
REDIS_FILE	Path to file containing Redis node(s)

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 Grafana screenshots:

Grafana dashboard is available on grafana.net and/or github.com.

Grafana dashboard with host & alias selector is available on github.com.

What else?

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

License

SureChEMBL/redis-exporter-debian

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