LimitMEMLOCK for systemd init script

[cyberflow]

Please add ability to set LimitMEMLOCK to infinity for bootstrap.memory_lock configuration.

[martinb3]

Hi @cyberflow -- it looks like upstream recommended against this, and suggested an override file instead: elastic/elasticsearch#21891 (comment)

We're trying to use the upstream init scripts and systemd unit files so I'd like to avoid deviating from them if possible. Does upstream's recommendation work for you?

Do you think this cookbook should provide some easy way to drop in the override described here:

To override these, add a file called /etc/systemd/system/elasticsearch.service.d/elasticsearch.conf and specify any changes in that file

Thanks!

[cyberflow]

Thanks, this recommendation is work.

[martinb3]

Great! Thanks! I'll leave this open to document it.

[damm]

Yeah I kinda think this cookbook should create this file however; it's not something we should have to be shipping in wrappers exactly.

Locking the memory is pretty standard in production

[damm]

Additionally I tried creating that directory and file and it didn't seem to work.