CoreDNS Stats

Version history

• May 2019, v1.5.0

Resources

• https://github.com/coredns/coredns/tree/master/plugin/metrics
• https://coredns.io/manual/configuration/

Setup environment for manual tests

Write this contents to corefile

# Zone1
domain.elastic:1053 {
    log
    errors
    auto
    reload 10s
    cache 4

    prometheus :9153

    hosts {
        127.0.0.1   my.domain.elastic
        192.168.0.1   theirs.domain.elastic
        fallthrough
    }
}

# Zone2
.:1053 {
    log
    errors
    prometheus :9153
    cache 4

    forward . 8.8.8.8 8.8.4.4
}

It creates 2 zones listening on port 1053, prometheus metrics can be gathered at port 9153 Requests for my.domain.elastic and theirs.domain.elastic will be resolved locally Any other request will be forwarded to google's DNSs. Cache plugin is activated

For manual testing you can open a number of terminals and use watch with any of these commands:

dig @localhost -p 1053 TXT apache.org

dig @localhost -p 1053 A google.com

dig @localhost -p 1053 MX google.com

dig @localhost -p 1053 A my.domain.elastic

dig @localhost -p 1053 A theirs.domain.elastic +tcp

Metrics can be manually retrieved using

curl localhost:9153/metrics