#0000 - Refine external-dns setup with error handling and Helm values

Replaced `set -ex` with `set -e` for cleaner error output and added Helm values configuration. Ensured namespace creation doesn't fail if it already exists, and specified a custom values file for better deployment flexibility.

helm-values/external-dns.yaml

@@ -0,0 +1,8 @@
+nodeSelector:
+  com.van-hemmen.role: gateway
+  com.van-hemmen.hosting: ovh
+tolerations:
+  - key: "com.van-hemmen.role"
+    operator: "Equal"
+    value: "gateway"
+    effect: "NoSchedule"

scripts/04_install_external_dns.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -ex
+set -e
 
 # Check if the Cloudflare API token is provided as an argument
 if [ -z "$1" ]; then
@@ -17,10 +17,10 @@ helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo update
 
 # Create the namespace for external DNS
-kubectl create namespace external-dns
+kubectl create namespace external-dns || true
 
 # Install the external-dns chart with the provided Cloudflare API token
-helm install external-dns bitnami/external-dns --namespace external-dns \
+helm install external-dns bitnami/external-dns --namespace external-dns -f helm-values/external-dns.yaml \
   --set provider=cloudflare \
   --set cloudflare.apiToken="$CLOUDFLARE_API_TOKEN" \
   --set txtOwnerId=external-dns