Apache Cassandra™ Log Viewing with gltail

gltail by Erlend Simonsen is a real-time log viewer written in Ruby, offering an engaging live view of log data from multiple servers. It assigns log entries to blocks/labels displayed on the border and tracks counts/averages per entry. New log entries are shown as events or activities with differently sized circles representing their size. To use gltail, set up a working Apache Cassandra™/Datastax Enterprise ring and download gltail from GitHub. Customize the gl_tail.yaml file to enable gltail to read log files and parse them. The parser for the log file defines regular expressions that extract specific information, which can be added to particular blocks or new ones. This tool is useful for visualizing correlations between events and alerting about specific errors in a way that tracks occurrences.