* feat(annotations): add custom annotation prefix support for split horizon DNS
Add --annotation-prefix flag to allow customizing the annotation prefix
used by external-dns. This enables split horizon DNS scenarios where
multiple instances process different sets of annotations from the same
Kubernetes resources.
Changes:
- Add AnnotationPrefix field to Config with validation
- Convert annotation constants to variables that can be reconfigured
- Add SetAnnotationPrefix() function to rebuild annotation keys
- Integrate annotation prefix setting in controller startup
- Update Helm chart with annotationPrefix value
- Add comprehensive split horizon DNS documentation
- Update FAQ with annotation prefix examples
This maintains full backward compatibility - the default prefix remains
"external-dns.alpha.kubernetes.io/".
Co-Authored-By: Claude <noreply@anthropic.com>
* docs(advanced): fix markdown formatting in split-horizon guide
Add blank lines before code blocks to improve markdown rendering
and comply with markdownlint rules.
Co-Authored-By: Claude <noreply@anthropic.com>
* docs(advanced): fix markdown formatting in split-horizon guide
Co-Authored-By: Claude <noreply@anthropic.com>
* docs(charts): regenerate Helm chart documentation
Co-Authored-By: Claude <noreply@anthropic.com>
* test: add AnnotationPrefix field to test configs
Add missing AnnotationPrefix field to minimalConfig and overriddenConfig
test configurations to match the new default value set in NewConfig().
Co-Authored-By: Claude <noreply@anthropic.com>
* test(charts): update error pattern in json-schema test
Update expected error message pattern to match current Helm validation
output format.
Co-Authored-By: Claude <noreply@anthropic.com>
* refactor(annotations): remove init() for explicit initialization
- Remove init() function from annotations package
- Add explicit SetAnnotationPrefix() call in controller/execute.go
- Remove annotation key aliases from source/source.go
- Replace all alias usages with annotations.* references (348 changes in 28 files)
- Add TestMain to existing test files (service_test.go, cloudflare_test.go)
This change makes annotation initialization explicit and predictable,
avoiding hidden global state initialization at import time.
Co-Authored-By: Claude <noreply@anthropic.com>
* docs: update changelog and mkdocs to include annotationPrefix and split horizon DNS
Signed-off-by: Aleksei Sviridkin <f@lex.la>
* docs(split-horizon): fix linting
Signed-off-by: Aleksei Sviridkin <f@lex.la>
* refactor(annotations): replace hardcoded annotation prefix with constant
Replace all hardcoded "external-dns.alpha.kubernetes.io/" strings
with annotations.DefaultAnnotationPrefix constant to establish
a single source of truth.
Changes:
- Add DefaultAnnotationPrefix constant in source/annotations/annotations.go
- Replace hardcoded string in controller/execute.go with constant reference
- Replace hardcoded strings in pkg/apis/externaldns/types.go (2 occurrences)
- Add helm unit tests for annotationPrefix value
This eliminates string duplication and makes future changes easier.
Co-Authored-By: Claude <noreply@anthropic.com>
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Signed-off-by: Aleksei Sviridkin <f@lex.la>
Co-authored-by: Claude <noreply@anthropic.com>
* feat: use transformers in pod informers to reduce memory footprint
Add a transformer to the pods informer of the pod and service sources.
Refs: #5595
Signed-off-by: Valerian Roche <valerian.roche@datadoghq.com>
* Do not use transformer when fqdnTemplate is set
* Update source/pod_test.go
Co-authored-by: Michel Loiseleur <97035654+mloiseleur@users.noreply.github.com>
---------
Signed-off-by: Valerian Roche <valerian.roche@datadoghq.com>
Co-authored-by: Michel Loiseleur <97035654+mloiseleur@users.noreply.github.com>
* feat(source): pods added support for annotation filter and label selectors
* feat(source/pods): support for annotation and label filter
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
---------
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support ttl annotation
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support ttl annotation
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
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Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Co-authored-by: vflaux <38909103+vflaux@users.noreply.github.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
* feat(source/pod): add support for fqdn templating
Co-authored-by: Michel Loiseleur <97035654+mloiseleur@users.noreply.github.com>
---------
Signed-off-by: ivan katliarchuk <ivan.katliarchuk@gmail.com>
Co-authored-by: vflaux <38909103+vflaux@users.noreply.github.com>
Co-authored-by: Michel Loiseleur <97035654+mloiseleur@users.noreply.github.com>
Add two new options:
- --ignore-non-host-network-pods
- --pod-source-domain
Combined toghether, they can be used to register the IPs
of all pods with their associated PTR record.
Co-authored-by: Michel Loiseleur <97035654+mloiseleur@users.noreply.github.com>
