OpenSearch cluster & off-peak auto-tune operations

Question

I have a OpenSearch cluster, with auto-tune enabled & off-peak window defined for automatically applying tunes that may interfere the cluster availability.

Currently, the off-peak operations are set to be performed immediately. I see there's a "Jvm young gen tuning" task that has been "in progress" status for over 30 minutes already. I'd like to be able to see, what the task is actually doing, but cannot seem to find any logs, nor, AWS cli describe commands to be able to trace the progress.

Is there any way for me to get a grasp, what a specific auto-tune operation is currently doing, when it is "in progress" status?

Answer

Hello,

OpenSearch sends events to Amazon EventBridge when any Auto Tune events occur. This integration allows you to send an email or perform a specific action when an event is received. I attached a link that shows the format of each Auto Tune event below.

In addition, you can also monitor Auto Tune statistics in CloudWatch such as 
* AutoTuneChangesHistoryHeapSize
* AutoTuneChangesHistoryJVMYoungGenArgs
* AutoTuneFailed
* AutoTuneSucceeded
* AutoTuneValue

Auto-Tune events: 
[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/monitoring-events.html#monitoring-events-autotune]()

Auto-Tune metrics:
[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html#managedomains-cloudwatchmetrics-autotune-metrics]()

OpenSearch cluster & off-peak auto-tune operations

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