Collect metrics for config options

[oliver006]

Collecting metrics for config options like max_memory could be useful and should be easy to implement by parsing the output of CONFIG GET *.

[jkemp101]

CONFIG isn't available in AWS ElasticCache Redis. A flag would useful to disable this check. Right now it errors and then doesn't do the check-keys because of the continue.

[oliver006]

Ah, interesting.
Let me fix that so it continues even if it can't get the CONFIG output.

[jkemp101]

Thanks for the fix, just deployed latest version and it works great. Passing 1025 queues on the command line for -check-keys is also surprisingly working.

[oliver006]

Wow, over 1k for check-keys is a lot, would regex or wildcard matching help in your case?

[jkemp101]

A wildcard would definitely be cleaner but the command line list is working for now. I don't expect the list to expand for now.

[oliver006]

👍

[mrwacky42]

For the record, in AWS ElastiCache Redis, a maxmemory value is returned in the results of the INFO memory command. Perhaps it would be nice to add an option to look there instead?

[cbarratt]

^ The above would be great, I'm using Redis on Heroku and the CONFIG option is also disabled there! Retrieving the data from INFO would be a good option to have.

[oliver006]

@cbarratt - this should be fixed via #64 and released as https://github.com/oliver006/redis_exporter/releases/tag/v0.11

[plynte]

maxmemory --> "redis_memory_max_bytes" after v0.11