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Comparison between Prometheus thanos and cortex components

2022-04-23 07:04:00 【A sunny afternoon】

Configuration of alarm capability ：Thanos It is recommended unless there is a special need for global alarm , Otherwise... Should be used Prometheus Native alarm capability .

Cortex Thanos
Distributor receive Prometheus remote_write data , Verify and distribute to Ingester Receiver

receive Prometheus remote_write data , Write local TSDB, And on a regular basis 2h Upload block To object store .

Internal implementation of hash ring , Independent of external storage .
Ingester

Cache the received data into memory , And on a regular basis 2h Refresh into the object store .

Rely on the outside KV Store as Consul To store IIngester The hash ring of .
No corresponding components / Sidecar

Collect the same node /Pod Of Prometheus data , And upload to the object store . Provide query API to Query.
No corresponding components / Store Gateway Data information stored in cache object , And provide query of data in object storage API to Query.
Queier Execute query statement , From object storage and Ingester Get data from memory .

Querier/Query

 Execute query statement , from Sidecar and Store Gateway Provided API get data .
Query Frontend Split a large query into multiple small queries （ Time level ）, Distribute query requests to querier, And cache query results . Query Frontend This component reference Cortex Design , And Cortex Of Query Frontend Has exactly the same function .

Ruler

Optional installation

perform recording rules and alerting rules,push Give an alarm to Cortex Alertmanager.

Ruler/Rule

Optional installation

perform Thanos At the cluster level recording rules and alerting rules, Upload to object storage and push Give an alarm to Prometheus Alertmanager.

Alertmanager

Optional installation

Process and send alarm messages , Add multi tenant feature . No corresponding components /

Configs API

Optional installation

management Ruler and Alertmanager To configure . No corresponding components /

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