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external-dns/docs/ttl.md
Kevin J. Qiu 71723bdd5b Allow specifying a custom TTL through annotation on Ingress or Service (#320) 
* Add RecordTTL

* Route53: test for custom TTL

* Fix tests

* Fix remaining tests

* Add ttl when endpoint is created from ingress

* Missed a word

* Fix bad refactoring

* Add ingress custom TTL test

* gofmt

* Satisfy go-lint

* Unshadow `endpoint` in azure provider

* Fix and add an output test

* Add TTL for endpoints generated from service templates

* Take TTL into account when generating update plan

* Tests for TTL change impact on the plan

* Refactor factory method name

* Refactoring

* Run gofmt

* Make endpoint string format look like BIND config

* Update plan and plan_test

* Replace NewEndpointWithTTLValue with NewEndpointWithTTL in aws

* Remove NewEndpointWithTTLValue func

* Update references to TTL

* Remove getTTLValue func

* Handle merge conflict

* Update tests

* Update README, CHANGELOG and documentation

* Run gofmt

* Move getTTLFromAnnotations to a common file

* Refactor getTTLFromAnnotations

* Gofmt

* Add tests for getTTLFromAnnotations

* Trigger build

* Add boilerplate header

* Update README/CHANGELOG according to code review

* Add ttl.md and link it from README

* change CNAME string to endpoint.RecordTypeCNAME

* fix test cases with AWS ALIAS records, these do not behave different in these tests
2017-10-11 14:17:02 +02:00

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Configure DNS record TTL (Time-To-Live)

An optional annotation external-dns.alpha.kubernetes.io/ttl is available to customize the TTL value of a DNS record.

To configure it, simply annotate a service/ingress, e.g.:

apiVersion: v1
kind: Service
metadata:
  annotations:
    external-dns.alpha.kubernetes.io/hostname: nginx.external-dns-test.my-org.com.
    external-dns.alpha.kubernetes.io/ttl: "60"
  ...

TTL must be a positive integer encoded as string.

Providers

  • AWS (Route53)
  • Azure
  • Cloudflare
  • DigitalOcean
  • Google
  • InMemory

PRs welcome!