In this project, I have worked on logs monitoring for Spring Boot Application using ELK Stack (Elastic search, Logstash and Kibana).

1 - Download Elasticsearch .zip file from Elasticsearch Downloads. Extract the .zip file and run "elasticsearch.bat" file in /bin folder. Goto http://localhost:9200/ and you can see the Elasticsearch webpage.

2 - Download Kibana .zip file from Kibana Downloads. Extract the .zip file and run "kibana.bat" file in /bin folder. Goto http://localhost:5601/ and you can see the Kibana webpage. Create a new Index "logstash-*". Goto Discover Page and you will see the logs there when you run the spring boot application.

3 - Download Logstash .zip file from Logstash Downloads. Extract the .zip file. Create "logstash.conf" file inside the folder and add the following content into it, replace the PROJECT_PATH and save it:

input { file { type => "java" path => "PROJECT_PATH/spring-boot-elk.log" codec => multiline { pattern => "^%{YEAR}-%{MONTHNUM}-%{MONTHDAY} %{TIME}.*" negate => "true" what => "previous" } } }

filter { if [message] =~ "\tat" { grok { match => ["message", "^(\tat)"] add_tag => ["stacktrace"] } } }

output { stdout { codec => rubydebug } elasticsearch { hosts => ["localhost:9200"] } }

4 - Run "bin/logstash -f logstash.conf" in command prompt inside the extracted folder.

5 - Now, run the Spring Boot Application. Goto http://localhost:8080/elk to see the success logs and http://localhost:8080/exception to see the error stacktrace logs.