Hi am trying to use [https://hkrtrainings.com/elk-stack-trainingl]ELK stack[/url] in a micro-services architecture which have lots of services distributed over many servers.

Now I have configured Kibana & ElasticSearch. Now my doubt is where do I have to install Logstash. I mean lets say there are three different Servers A, B, & C and all servers have say 3 servcies . Now in total there are 9 services whose logs I want to capture using ELK Stack.

But my question is that do I have to install Logstash on each different server and send parsed logs to Elastic or Can I install Logstash on single server & specify the remote input.

Also do I need to use Filebeat?

i'm new to [https://hkrtrainings.com/elasticsearch-training][b]ElasticSearc[/b]h[https://hkrtrainings.com/elasticsearch-trainingl]. I'm trying to figure out how to remove data from ElasticSearch. I have deleted my indexes. However, that doesn't seem to actually remove the data itself. The other stuff I've seen points to the Delete by Query feature. However, I'm not even sure what to query on. I know my indexes. Essentially, I'd like to figure out how to do a

DELETE FROM [Index]
From PostMan in Chrome. However, I'm not having any luck. It seems like no matter what I do, the data hangs around. Thus far, I've successfully deleted the indexes by using the DELETE HTTP Verb in PostMan and using a url like:

http://localhost:9200/[indexName]
However, that doesn't seem to actually remove the data (aka docs) themselves.