redis_exporter: exporter doesn't connect to redis

Greetings, I’m struggling for a few days to get some metrics from redis(openshift environment). Setup is: Redis 4 > prometheus > grafana.

Environment variables and prometheus.yml is as follows:

- name: REDIS_PASSWORD
  value: password01!
- name: REDIS_ADDR
  value: redis://127.0.0.1:6379

prometheus.yml:

        - job_name: scraper-redis
          static_configs:
          - targets: ['redis-sev-redis-svc.redis.svc:9121']
            labels:
              alias: redis-sev-redis-svc.redis.svc
---------------

In prometheus, when I execute redis_up, the value is zero, therefore no info is going forward to grafana. But, in grafana i see that the variable “addr” is used to get the connection string, the redis://127.0.0.1:6379. I’m guessing the exporter cannot connect to that address for some reason. I have tried other db’s and exporters to check if there is a problem with prometheus, or my configuration, but it was not the case, they were working. I have encountered this issue only with this redis instance and exporter. Any suggestions will be appreciated.

Thank you in advance.

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 18 (7 by maintainers)

Most upvoted comments

@oliver006 , I’ve enabled redis config for max memory data after that it is started working.

SankarGopal77 on Nov 4, 2019

Thanks Oliver it worked, I used docker run -d --name redis_exporter -p 9121:9121 oliver006/redis_exporter --redis.addr=<host ip address>:7000

najmuddoja on Oct 15, 2019

Found the issue. Didn’t know that Redis ignores the “REDIS_PASSWORD” variable, unless we enable password authentification(default redis configuration ignores authentification) or override the redis conf file, therefore the exporter could not connect to the DB. Thanks for your time! 😄

spepe91 on Oct 5, 2018