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.

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.