Collecting debug logs

Whenever we debug issues, it's very helpful to have aggregated logs. There are tools such as Datadog that provide a single pane of glass for monitoring a CockroachDB cluster. Node logs and the admin UI provide helpful information for troubleshooting issues. Please refer to Chapter 8, Exploring the Admin User Interface, to get yourself familiar with the user interface. Logs provide detailed information about all the activities happening in a cluster. CockroachDB provides various types of log files based on the intent. CockroachDB also supports log levels and log channels. It is also possible to emit certain log messages to an external destination for further processing.

In this section, we will first discuss various log files and what information each file contains, then move on to understanding the log levels that determine how much information you want to log based on their severity. Later, we will learn about the concept of log channels, sending logs...