I wanted to inquire about the makeup of Elasticsearch
In order to use the server, one needs 2 servers from webserver and 2 servers from elasticsearch.
Elasticsearch requires two servers to be used:
Server 1: 1 master node and 2 data nodes
Server 2: 1 master node and 2 data nodes
I used this composition to create a cluster but I was wondering whether it be a problem if I used 2 master node instead of one.
I tried to use an odd number of master node in the webserver, but the 2 webservers consisted of active-standby., uilizing one server became impossible.
When I used master node in both the 2 webservers, there are 4 master node in total and one of them is always offline.
Is it possible for me to configure the device in this way when faced with this problem?
Welcome! 
I'll close this one in favour of I have a question about elasticsearch configuration. It's best if you don't duplicate your questions, as it makes it harder for people to help 