[Feature Request] Add support for overriding namespace when using Kubernetes Automatic Service Discovery

[jlaska]

Description

I mistakenly thought that adding an Ingress annotation of gethomepage.dev/namespace would allow overriding the namespace of the Ingress to discover pods running in different namespaces. Looks like this isn't supported with Kubernetes Ingress Automatic Service Discovery.

I can get it to work with the services.yaml file as shown below.

  services.yaml: |
    - Network Management:
        - Traefik:
            icon: traefik.png
            href: "https://traefik.example.com"
            namespace: kube-system
            app: traefik
            siteMonitor: "http://traefik-service.kube-system.svc.cluster.local:9000"
            widget:
              type: "traefik"
              url: "http://traefik-service.kube-system.svc.cluster.local:9000"

But it would be slick if I could configure this in the Ingress itself as shown below.

  annotations:
    gethomepage.dev/enabled: "true"
    gethomepage.dev/name: traefik
    gethomepage.dev/icon: traefik.png
    gethomepage.dev/namespace: kube-system
    gethomepage.dev/app: traefik
    gethomepage.dev/href: "https://traefik-dashboard.example.com"
    gethomepage.dev/siteMonitor: "http://traefik-service.kube-system.svc.cluster.local:9000"
    gethomepage.dev/widget.type: "traefik"
    gethomepage.dev/widget.url: "http://traefik-service.kube-system.svc.cluster.local:9000"

I think the following code change would get things moving, but I'm not sure yet how to build/deploy/test out of the repo

diff --git a/src/utils/config/service-helpers.js b/src/utils/config/service-helpers.js
index 03b4507ea..05345e411 100644
--- a/src/utils/config/service-helpers.js
+++ b/src/utils/config/service-helpers.js
@@ -260,7 +260,7 @@ export async function servicesFromKubernetes() {
       .map((ingress) => {
         let constructedService = {
           app: ingress.metadata.annotations[`${ANNOTATION_BASE}/app`] || ingress.metadata.name,
-          namespace: ingress.metadata.namespace,
+          namespace: ingress.metadata.annotations[`${ANNOTATION_BASE}/namespace`] || ingress.metadata.namespace,
           href: ingress.metadata.annotations[`${ANNOTATION_BASE}/href`] || getUrlFromIngress(ingress),
           name: ingress.metadata.annotations[`${ANNOTATION_BASE}/name`] || ingress.metadata.name,
           group: ingress.metadata.annotations[`${ANNOTATION_BASE}/group`] || "Kubernetes",

Other

No response

[jlaska]

If there's interest, I have a PR ready for submission. I'm just unclear how to build and test this easily in my cluster.

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