Improve MinEventInterval compliance with docs #3400
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**Description** In the command line arguments, we see `min-event-sync-interval` as "The minimum interval between two consecutive synchronizations triggered from kubernetes events" In the code, it actually acts a different way. It imposes a certain dealy between syncs. While this is compliant with the "minimum delay between 2 consecutive synchronizations", it has side-effects in case of large delays. In particular, when trying to fine-tune external-dns to match the provider rate-limits. In this case, it may be interesting to restrict the rate of reconciling actions happening by having a high `min-event-sync-interval`, while keeping a low latency for initial events. This would allow to maximise the bulk effect of high change rate while keeping fast enough reaction for isolated changes. **Checklist** - [X] Unit tests updated - [X] End user documentation updated > End user documentation matches the updated behaviour with more > accuracy Change-Id: Ibcea707974a095a2d5861a3974b4c79e5a15b00e
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Sep 5, 2024
…rnal-dns to v0.15.0@338dd8c by renovate (#25969) This PR contains the following updates: | Package | Update | Change | |---|---|---| | [registry.k8s.io/external-dns/external-dns](https://redirect.github.com/kubernetes-sigs/external-dns) | minor | `v0.14.2` -> `v0.15.0` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>kubernetes-sigs/external-dns (registry.k8s.io/external-dns/external-dns)</summary> ### [`v0.15.0`](https://redirect.github.com/kubernetes-sigs/external-dns/releases/tag/v0.15.0) [Compare Source](https://redirect.github.com/kubernetes-sigs/external-dns/compare/v0.14.2...v0.15.0) #### Important notes This release drops a few unmaintained providers. See [https:/kubernetes-sigs/external-dns/pull/4719](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4719) as mentioned in [https:/kubernetes-sigs/external-dns/issues/4347](https://redirect.github.com/kubernetes-sigs/external-dns/issues/4347). If you need to use any of the previous providers, please use a previous release of external DNS or follow the instructions to implement a webhook provider that supports those providers. #### What's Changed - build(deps): bump actions/checkout from 4.1.5 to 4.1.6 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4477](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4477) - Update kustomize version for v0.14.2 by [@​Raffo](https://redirect.github.com/Raffo) in [https:/kubernetes-sigs/external-dns/pull/4480](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4480) - build(deps): bump the dev-dependencies group with 8 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4478](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4478) - update docs to v0.14.2 by [@​Raffo](https://redirect.github.com/Raffo) in [https:/kubernetes-sigs/external-dns/pull/4481](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4481) - build(deps): bump GrantBirki/json-yaml-validate from 2.7.1 to 3.0.0 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4489](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4489) - fix: re-add api-approved.kubernetes.io annotation by [@​morremeyer](https://redirect.github.com/morremeyer) in [https:/kubernetes-sigs/external-dns/pull/4488](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4488) - feat(webhooks): pass webhook-\* annotations to webhook providers by [@​Raffo](https://redirect.github.com/Raffo) in [https:/kubernetes-sigs/external-dns/pull/4458](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4458) - fix(traefik): Nil pointer exception if legacy traefik is disabled by [@​kbudde](https://redirect.github.com/kbudde) in [https:/kubernetes-sigs/external-dns/pull/4502](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4502) - add unifi webhook to readme by [@​onedr0p](https://redirect.github.com/onedr0p) in [https:/kubernetes-sigs/external-dns/pull/4504](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4504) - Drop experimental notice in webhook flags by [@​Raffo](https://redirect.github.com/Raffo) in [https:/kubernetes-sigs/external-dns/pull/4507](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4507) - feat(coredns): etcd authentication by [@​matthieugouel](https://redirect.github.com/matthieugouel) in [https:/kubernetes-sigs/external-dns/pull/4503](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4503) - Bump the dev-dependencies group across 1 directory with 13 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4514](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4514) - Add Infoblox webhook provider by [@​k0da](https://redirect.github.com/k0da) in [https:/kubernetes-sigs/external-dns/pull/4513](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4513) - 🌱 docs(footer): Add trademark disclaimer by [@​mariasalcedo](https://redirect.github.com/mariasalcedo) in [https:/kubernetes-sigs/external-dns/pull/4529](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4529) - chore!: Remove infoblox in-tree provider by [@​mloiseleur](https://redirect.github.com/mloiseleur) in [https:/kubernetes-sigs/external-dns/pull/4516](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4516) - Update to Go 1.22.4 by [@​Raffo](https://redirect.github.com/Raffo) in [https:/kubernetes-sigs/external-dns/pull/4534](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4534) - Bump the dev-dependencies group across 1 directory with 19 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4536](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4536) - Add documentation about etcd HTTPS for CoreDNS provider by [@​AlessandroZanatta](https://redirect.github.com/AlessandroZanatta) in [https:/kubernetes-sigs/external-dns/pull/4538](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4538) - chore(chart): Released chart for v0.14.2 by [@​stevehipwell](https://redirect.github.com/stevehipwell) in [https:/kubernetes-sigs/external-dns/pull/4541](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4541) - Bump the dev-dependencies group with 4 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4540](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4540) - feat(aws): use AWS profiles using .credentials file by [@​roehrijn](https://redirect.github.com/roehrijn) in [https:/kubernetes-sigs/external-dns/pull/3973](https://redirect.github.com/kubernetes-sigs/external-dns/pull/3973) - fix(cloudflare): trimSpace on token read from file by [@​simonostendorf](https://redirect.github.com/simonostendorf) in [https:/kubernetes-sigs/external-dns/pull/4515](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4515) - docs: upgrade mkdocs and fix broken links by [@​mloiseleur](https://redirect.github.com/mloiseleur) in [https:/kubernetes-sigs/external-dns/pull/4378](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4378) - chore(deps): bump github.com/vektah/gqlparser/v2 from 2.5.1 to 2.5.14 by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4546](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4546) - chore(deps): bump github.com/Azure/azure-sdk-for-go/sdk/azidentity from 1.5.2 to 1.6.0 by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4544](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4544) - chore(deps): bump the dev-dependencies group across 1 directory with 19 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4562](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4562) - chore(deps): bump actions/checkout from 4.1.6 to 4.1.7 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4547](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4547) - feat(rfc2136): add PTR optional support by [@​angeloxx](https://redirect.github.com/angeloxx) in [https:/kubernetes-sigs/external-dns/pull/4283](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4283) - Update cloudflare.md by [@​tobiabocchi](https://redirect.github.com/tobiabocchi) in [https:/kubernetes-sigs/external-dns/pull/4583](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4583) - feat!: update GRPCRoute client from v1alpha2 to stable v1 by [@​thameezb](https://redirect.github.com/thameezb) in [https:/kubernetes-sigs/external-dns/pull/4567](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4567) - docs(annotations): note how to set multiple hostnames by [@​hopkinsth](https://redirect.github.com/hopkinsth) in [https:/kubernetes-sigs/external-dns/pull/4602](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4602) - chore(deps): bump the dev-dependencies group across 1 directory with 2 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4604](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4604) - Gateway API: Revert Gateway and HTTPRoute objects from v1 to v1beta1 by [@​abursavich](https://redirect.github.com/abursavich) in [https:/kubernetes-sigs/external-dns/pull/4610](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4610) - chore(deps): bump google.golang.org/grpc from 1.64.0 to 1.64.1 by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4600](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4600) - chore(deps): bump the dev-dependencies group across 1 directory with 37 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4655](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4655) - docs: fix broken link by [@​ilmax](https://redirect.github.com/ilmax) in [https:/kubernetes-sigs/external-dns/pull/4662](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4662) - azure-private-dns: Fix LoadBalancer example by [@​orgads](https://redirect.github.com/orgads) in [https:/kubernetes-sigs/external-dns/pull/4663](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4663) - AWS: Change documentation to use Helm values by [@​pier-oliviert](https://redirect.github.com/pier-oliviert) in [https:/kubernetes-sigs/external-dns/pull/4577](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4577) - chore(deps): bump the dev-dependencies group across 1 directory with 10 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4668](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4668) - Improve MinEventInterval compliance with docs by [@​tjamet](https://redirect.github.com/tjamet) in [https:/kubernetes-sigs/external-dns/pull/3400](https://redirect.github.com/kubernetes-sigs/external-dns/pull/3400) - Add provider cache by [@​tjamet](https://redirect.github.com/tjamet) in [https:/kubernetes-sigs/external-dns/pull/4597](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4597) - chore: update maintainers by [@​mloiseleur](https://redirect.github.com/mloiseleur) in [https:/kubernetes-sigs/external-dns/pull/4679](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4679) - fix(helm): make use of resource values for webhook by [@​crutonjohn](https://redirect.github.com/crutonjohn) in [https:/kubernetes-sigs/external-dns/pull/4560](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4560) - Fix AWS Cloud Map docs: annotation key/value pairs must be strings by [@​mjlshen](https://redirect.github.com/mjlshen) in [https:/kubernetes-sigs/external-dns/pull/4683](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4683) - Webhook provider helm chart fixes by [@​kimsondrup](https://redirect.github.com/kimsondrup) in [https:/kubernetes-sigs/external-dns/pull/4643](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4643) - chore(deps): bump the dev-dependencies group across 1 directory with 16 updates by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4684](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4684) - chore(deps): bump GrantBirki/json-yaml-validate from 3.0.0 to 3.1.0 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4685](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4685) - Add tutorial to DynamoDB registry docs by [@​mjlshen](https://redirect.github.com/mjlshen) in [https:/kubernetes-sigs/external-dns/pull/4686](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4686) - chore(deps): bump GrantBirki/json-yaml-validate from 3.1.0 to 3.2.0 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4700](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4700) - chore(deps): bump GrantBirki/json-yaml-validate from 3.2.0 to 3.2.1 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4702](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4702) - chore: upgrade ExternalDNS to go 1.23 by [@​mloiseleur](https://redirect.github.com/mloiseleur) in [https:/kubernetes-sigs/external-dns/pull/4698](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4698) - feat: add annotation and label filters to Ambassador Host Source by [@​KyleMartin901](https://redirect.github.com/KyleMartin901) in [https:/kubernetes-sigs/external-dns/pull/2633](https://redirect.github.com/kubernetes-sigs/external-dns/pull/2633) - Add RouterOS provider to README.md by [@​benfiola](https://redirect.github.com/benfiola) in [https:/kubernetes-sigs/external-dns/pull/4714](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4714) - feat: support dual stack for gateway api by [@​thameezb](https://redirect.github.com/thameezb) in [https:/kubernetes-sigs/external-dns/pull/4469](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4469) - chore(deps): bump actions/setup-python from 5.1.1 to 5.2.0 in the dev-dependencies group by [@​dependabot](https://redirect.github.com/dependabot) in [https:/kubernetes-sigs/external-dns/pull/4712](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4712) - chore: remove unmaintained providers by [@​mloiseleur](https://redirect.github.com/mloiseleur) in [https:/kubernetes-sigs/external-dns/pull/4719](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4719) #### Images docker pull registry.k8s.io/external-dns/external-dns:v0.15.0 #### New Contributors - [@​kbudde](https://redirect.github.com/kbudde) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4502](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4502) - [@​matthieugouel](https://redirect.github.com/matthieugouel) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4503](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4503) - [@​mariasalcedo](https://redirect.github.com/mariasalcedo) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4529](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4529) - [@​AlessandroZanatta](https://redirect.github.com/AlessandroZanatta) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4538](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4538) - [@​roehrijn](https://redirect.github.com/roehrijn) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/3973](https://redirect.github.com/kubernetes-sigs/external-dns/pull/3973) - [@​simonostendorf](https://redirect.github.com/simonostendorf) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4515](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4515) - [@​angeloxx](https://redirect.github.com/angeloxx) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4283](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4283) - [@​tobiabocchi](https://redirect.github.com/tobiabocchi) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4583](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4583) - [@​thameezb](https://redirect.github.com/thameezb) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4567](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4567) - [@​hopkinsth](https://redirect.github.com/hopkinsth) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4602](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4602) - [@​ilmax](https://redirect.github.com/ilmax) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4662](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4662) - [@​orgads](https://redirect.github.com/orgads) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4663](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4663) - [@​pier-oliviert](https://redirect.github.com/pier-oliviert) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4577](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4577) - [@​crutonjohn](https://redirect.github.com/crutonjohn) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4560](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4560) - [@​mjlshen](https://redirect.github.com/mjlshen) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4683](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4683) - [@​kimsondrup](https://redirect.github.com/kimsondrup) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4643](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4643) - [@​KyleMartin901](https://redirect.github.com/KyleMartin901) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/2633](https://redirect.github.com/kubernetes-sigs/external-dns/pull/2633) - [@​benfiola](https://redirect.github.com/benfiola) made their first contribution in [https:/kubernetes-sigs/external-dns/pull/4714](https://redirect.github.com/kubernetes-sigs/external-dns/pull/4714) **Full Changelog**: kubernetes-sigs/external-dns@v0.14.2...v0.15.0 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - 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Description
In the command line arguments, we see
min-event-sync-intervalas "The minimum interval between two consecutive synchronizations triggered from kubernetes events"In the code, it actually acts a different way.
It imposes a certain delay between syncs.
In particular, when multiple calls to ScheduleOnce are done, it will systematically push back the next run by the min interval delay.
While this is compliant with the "minimum delay between 2 consecutive synchronizations", it has side-effects that may introduce large delays.
In particular, when trying to fine-tune external-dns to match the provider rate-limits.
In this case, it may be interesting to restrict the rate of reconciling actions happening by having a high
min-event-sync-interval, while keeping a low latency for initial events.This would allow to maximise the bulk effect of high change rate while keeping fast enough reaction for isolated changes.
Checklist
Change-Id: Ibcea707974a095a2d5861a3974b4c79e5a15b00e