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feat(source)!: support multiple namespaces in --namespace #6599

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feat(source)!: support multiple namespaces in --namespace #6599

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1a3cb6f
feat(informers): add multi-namespace informer factories helper
mloiseleur Jul 31, 2026
9352abd
feat(config)!: accept multiple values in --namespace
mloiseleur Jul 31, 2026
bec995d
feat(registry): add --crd-registry-namespace
mloiseleur Jul 31, 2026
50e0f9f
feat(source): watch multiple namespaces in service, crd and ingress-l…
mloiseleur Jul 31, 2026
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3 changes: 2 additions & 1 deletion docs/flags.md
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Expand Up @@ -43,7 +43,7 @@ tags:
| `--ingress-class=INGRESS-CLASS` | Require an Ingress to have this class name; specify multiple times to allow more than one class (optional; defaults to any class) |
| `--label-filter=""` | Filter resources queried for endpoints by label selector (default: all resources) |
| `--managed-record-types=A...` | Record types to manage; specify multiple times to include many; (default: A,AAAA,CNAME) (supported records: A, AAAA, CNAME, NS, SRV, TXT) |
| `--namespace=""` | Limit resources queried for endpoints to a specific namespace (default: all namespaces) |
| `--namespace=NAMESPACE` | Limit resources queried for endpoints to specific namespaces; specify multiple times or as a comma-separated list (default: all namespaces) |
| `--nat64-networks=NAT64-NETWORKS` | Adding an A record for each AAAA record in NAT64-enabled networks; specify multiple times for multiple possible nets (optional) |
| `--openshift-router-name=""` | if source is openshift-route then you can pass the ingress controller name. Based on this name external-dns will select the respective router from the route status and map that routerCanonicalHostname to the route host while creating a CNAME record. |
| `--pod-source-domain=""` | Domain to use for pods records (optional) |
Expand Down Expand Up @@ -153,6 +153,7 @@ tags:
| `--[no-]pihole-tls-skip-verify` | When using the Pihole provider, disable verification of any TLS certificates |
| `--policy=` | Modify how DNS records are synchronized between sources and providers (required, no default; options: sync, upsert-only, create-only) |
| `--registry=txt` | The registry implementation to use to keep track of DNS record ownership (default: txt, options: aws-sd, crd, dynamodb, noop, txt) |
| `--crd-registry-namespace=""` | When using the CRD registry, the namespace the DNSRecord objects are stored in (default: the namespace ExternalDNS runs in) |
| `--txt-owner-id="default"` | When using the TXT, DynamoDB or CRD registry, a name that identifies this instance of ExternalDNS (default: default) |
| `--txt-prefix=""` | When using the TXT registry, a custom string that's prefixed to each ownership DNS record (optional). Could contain record type template like '%{record_type}-prefix-'. Mutual exclusive with txt-suffix! |
| `--txt-suffix=""` | When using the TXT registry, a custom string that's suffixed to the host portion of each ownership DNS record (optional). Could contain record type template like '-%{record_type}-suffix'. Mutual exclusive with txt-prefix! |
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6 changes: 4 additions & 2 deletions docs/registry/crd.md
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Expand Up @@ -95,8 +95,10 @@ instance with `--txt-owner-id`:
* `--txt-owner-id=my-identifier` — a value unique to this ExternalDNS deployment,
stable for its lifetime. Deployments sharing a DNS zone must use different
owner IDs. See [Registries](registry.md).
* `--namespace=external-dns` — the namespace `DNSRecord` objects are created in.
When unset, the registry uses the `default` namespace.
* `--crd-registry-namespace=external-dns` — the namespace `DNSRecord` objects are
created in. When unset, the registry uses the namespace ExternalDNS runs in,
falling back to `default` outside of a cluster. It is independent of
`--namespace`, which scopes the sources.

## Status

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