Elastic Search should terminate & restart gracefully

From one of our customers John Paul:

> ```
> check process elasticsearch_9080
> with pidfile /var/run/elasticsearch.pid
> start program = "/usr/lib/elasticsearch/bin/elasticsearch -p /var/run/elasticsearch.pid" with timeout 90 seconds
> stop program = "/bin/bash -c '/bin/kill `cat /var/run/elasticsearch.pid`'" with timeout 90 seconds
> group elasticsearch
> ```
>
> kill is just program sends a TERM signal to a process by default. it does not guarantee the shutdown process, so after a Kill, Monit thinks that ES is off. but > in reality it is not so!
>
> Next, monit starts a new process elasticsearch. Together with the old process, they form a cluster. New shard begins to process and download the data from the old shard, but do not have time, as the old process shutdowned by kill.
>
> This can cause vanishing indexes
>
> This situation can be avoided by using standard upstart or systemd as supervisor of demons.