[Photon] Photon setup

[First Last]

Hello,
I am new with Photon and have a few questions regarding its setup:

1. Does the latest version of photon support AWS elastic search? (one issue
on github <https://github.com/komoot/photon/issues/435> says it doesn't.)
2. What changes have to be made to use Photon in production? (when the jar
file is run, it shows a warning that ES version not be used in production.)
3 What are the steps required to connect photon to an external elastic
search server? The -transport-address command is giving
NoNodeAvailableException
Exception in thread "main" NoNodeAvailableException[None of the configured
nodes are available:
[{#transport#-1}{t6FDPkURQIiXLV5nhROleQ}{172.17.0.2}{172.17.0.2:9300}]]
similar to https://github.com/komoot/photon/issues/157
<https://github.com/komoot/photon/issues/157>

Thanking you.
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