Prevent Elasticsearch to crash on aws micro t2 instance

I've been using Elasticsearch for the last couple of weeks and it works great integrated with symfony.

However, I've noticed that the server is crashing every 2-3 days. Our site is really small so for the next 3-6 months, we plan on using one node.

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 26261 elastic+ 20 0 1323504 781936 22576 S 0.3 76.9 0:17.71 java

Our AWS instance is t2-micro and has 1GB of memory.

And I have assigned on elasticsearch configuration file.

HEAP_SIZE: 512m number_of_shards: 5 (I've just moved to 1) number_of_replicas: 1 (I've just moved to 0)

Our Index size is really small, around 97kb, we're storing 63 products. But on average we will around 200.

So the questions that I have is:

1- Is there a recommeded configuration for one node in a really small server

2- Is there a way to diagnose the crash, the logs in Trace mode, didn't give me any hints of what went wrong.

3- Is there a way to automatically restart Elasticsearch when it crashes, like maybe with supervisor.