CoreDNS module

This is a filebeat module for CoreDNS. It supports both standalone CoreDNS deployment and CoreDNS deployment in Kubernetes.

Read the quick start to learn how to set up and run modules.

Compatibility

Although this module has been developed against Kubernetes v1.13.x, it is expected to work with other versions of Kubernetes.

Configure the module

You can further refine the behavior of the coredns module by specifying variable settings in the modules.d/coredns.yml file, or overriding settings at the command line.

Variable settings

Each fileset has separate variable settings for configuring the behavior of the module. If you don’t specify variable settings, the coredns module uses the defaults.

For more information, see Configure variable settings. Also see Override input settings.

When you specify a setting at the command line, remember to prefix the setting with the module name, for example, coredns.log.var.paths instead of log.var.paths.

log fileset settings

Example config:

- module: coredns
  log:
    enabled: true
    var.paths: ["/var/log/coredns.log"]
    var.tags: ["coredns", "staging"]
var.paths
An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.
var.tags
An array of tags describing the monitored CoreDNS setup.

Example dashboard

This module comes with a sample dashboard.

kibana coredns

Fields

For a description of each field in the module, see the exported fields section.