Mimir #

GrafanaLabs Mimir supports Prometheus remote read API . vmctl in remote-read mode can be used for historical data migration from Mimir.

By default, Mimir uses the prometheus path prefix so specifying the source should be as simple as --remote-read-src-addr=http://<mimir>:9009/prometheus. But if prefix was overridden via prometheus_http_prefix, then source address should be updated to --remote-read-src-addr=http://<mimir>:9009/{prometheus_http_prefix}.

When you run Mimir, it exposes a port to serve HTTP on 8080 by default.

Next example of the local installation was in multi-tenant mode (3 instances of Mimir) with nginx as load balancer. Load balancer expose single port :9090. As you can see in the example we call :9009 instead of :8080 because of proxy.

The importing process example for the local installation of Mimir and single-node VictoriaMetrics(http://localhost:8428):

      ./vmctl remote-read 
--remote-read-src-addr=http://<mimir>:9009/prometheus \
--remote-read-filter-time-start=2021-10-18T00:00:00Z \
--remote-read-step-interval=hour \
--remote-read-headers=X-Scope-OrgID:demo \
--remote-read-use-stream=true \
--vm-addr=http://<victoria-metrics>:8428 \
    

Note

Mimir supports streamed remote read API , so it is recommended setting --remote-read-use-stream=true flag for better performance and resource usage.

Note

You may observe more samples being written to VictoriaMetrics with --remote-read-use-stream=true, particularly when using a small --remote-read-step-interval, such as minute. This is caused by the underlying chunk storage structure in Mimir, and enabling deduplication will eventually remove these duplicates for both querying and storage.

See how to configure –vm-addr .

And when the process finishes, you will see the following:

      Split defined times into 8847 ranges to import. Continue? [Y/n]
VM worker 0:→ 12176 samples/s
VM worker 1:→ 11918 samples/s
VM worker 2:→ 11261 samples/s
VM worker 3:→ 12861 samples/s
VM worker 4:→ 11096 samples/s
VM worker 5:→ 11575 samples/s
Processing ranges: 8847 / 8847 [█████████████████████████████████████████████████████████████████████████████] 100.00%
2022/10/21 17:22:23 Import finished!
2022/10/21 17:22:23 VictoriaMetrics importer stats:
  idle duration: 0s;
  time spent while importing: 15.379614356s;
  total samples: 81243;
  samples/s: 5282.51;
  total bytes: 6.1 MB;
  bytes/s: 397.8 kB;
  import requests: 6;
  import requests retries: 0;
2022/10/21 17:22:23 Total time: 16.287405248s
    

Configuration #

If you run Mimir installation in multi-tenant mode, remote read protocol requires an Authentication header like X-Scope-OrgID. Y ou can define it via the flag --remote-read-headers=X-Scope-OrgID:demo.

See remote-read mode for more details.