Important System Configuration

[cduongvn]

The following settings must be addressed before going to production mode:

• Set JVM heap size (done)
• Disable swapping
• Increase file descriptors
• Ensure sufficient virtual memory
• Ensure sufficient threads

https://www.elastic.co/guide/en/elasticsearch/reference/current/system-config.html

I would love to have these configuration in the scripts.

Thanks for this amazing setup. Canh

[mbrost]

Hey @nautilus28 thanks for addressing these issues. Would these need to be configured before adding the host or after running the second playbook?

[cduongvn]

@mbrost I think they should be done by using different tasks in specific roles of elasticsearch deployment.

[sadsfae]

I haven't forgotten about this, I am finding time here and there to solve any open issues or RFE that people open (thanks for opening this!). I see this sort of enhancement check becoming more important as the 5.x series has become much more demanding - people running this in a VM really need at least 6-8G of memory now for example or things time out.

I don't have an ETA but hope to have more time soon to implement this.

[alnash28]

@sadsfae Would the changes here be beneficial for m4.large OR m4.xlarge EC2 instance within AWS as well?..

[knechtionscoding]

@anash28 These changes are recommended by Elastic and should be implemented in any instance. The issue, primarily, is the JVM running out of memory and crashing your shards.