Filebeat, a reliable log shipper for ELK-based logging architectures, has evolved from its predecessors Lumberjack and Logstash-Forwarder to become an essential tool, though not without its challenges. Users need to be cautious with YAML syntax, as its sensitivity to indentation can lead to configuration errors. The Filebeat registry file, which tracks the state of log files, can grow large and consume memory, especially when many new log files are created, but options like clean_removed and clean_inactive can mitigate this issue. File handlers for removed or renamed log files can also consume resources, and configurations such as close_inactive and closed_removed can help manage these handlers. When configuring multiple pipelines, Filebeat allows for tracking multiple log files by defining file paths in inputs, but specific settings for each log type should be added to avoid configuration pitfalls. Although rare, high CPU usage can occur and is influenced by the scan_frequency setting, which can be adjusted to manage resource consumption. Despite these challenges, Filebeat's default settings are usually sufficient, and tools like the Filebeat wizard developed by Logz.io can help users avoid common configuration issues.