Allocating RAM to Elasticsearch nodes

mgirndt · October 27, 2015, 2:01pm

I have a server which that has multiple elasticsearch nodes on it, how do I allocate RAM for each specific node? I used
export ES_HEAP_SIZE=30g for the first node. How do I allocate a specific amount for the second node?

Thanks,
Michael

magnusbaeck · October 27, 2015, 8:32pm

How are you starting your different instances?

mgirndt · October 27, 2015, 8:44pm

I'm wanting them to both have init.d scripts.

magnusbaeck · October 27, 2015, 9:13pm

If you use the stock init scripts they'll load the /etc/default (or /etc/sysconfig) file with the same name, i.e. /etc/init.d/elasticsearch-foo loads /etc/default/elasticsearch-foo so just set ES_HEAP_SIZE in the file corresponding to each instance.