Which open source monitoring tool is associated with log management?

The ELK stack, which stands for Elasticsearch, Logstash, and Kibana, is specifically designed for log management and analytics. Elasticsearch serves as the search and analytics engine, Logstash acts as a data processing pipeline that ingests data from multiple sources, and Kibana provides a user interface to visualize the data. This combination allows users to efficiently collect, store, search, and analyze log data, making it highly effective for monitoring applications and systems.

In contrast, Grafana is primarily a visualization tool that integrates with various data sources but does not inherently manage logs. Prometheus focuses on time-series monitoring and alerting, collecting metrics rather than logs. Graphite, like Prometheus, is designed for storing and graphing time-series data but does not have the comprehensive log management capabilities that the ELK stack provides. Therefore, the ELK stack stands out as the most relevant tool for log management among the options given.