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Refactor CoreDNS setup: add custom configuration and LoadBalancer service. This prevents k3s overwriting our config with a CoreDNS restart.

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This commit is contained in:
Paul Payne
2025-05-25 15:47:31 -07:00
parent 696851298b
commit 2b2c4a0a73
5 changed files with 62 additions and 49 deletions
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11
infrastructure_setup/setup-coredns.sh
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@@ -14,16 +14,17 @@ echo "Setting up CoreDNS for k3s..."
echo "Script directory: ${SCRIPT_DIR}"
echo "Current directory: $(pwd)"
# Apply the custom config for the k3s-provided CoreDNS
echo "Applying CoreDNS configuration..."
cat "${SCRIPT_DIR}/coredns/coredns-config.yaml" | envsubst | kubectl apply -f -
# Apply the k3s-compatible custom DNS override (k3s will preserve this)
echo "Applying CoreDNS custom override configuration..."
cat "${SCRIPT_DIR}/coredns/coredns-custom-config.yaml" | envsubst | kubectl apply -f -
# Apply the LoadBalancer service for external access to CoreDNS
echo "Applying CoreDNS service configuration..."
cat "${SCRIPT_DIR}/coredns/coredns-service.yaml" | envsubst | kubectl apply -f -
cat "${SCRIPT_DIR}/coredns/coredns-lb-service.yaml" | envsubst | kubectl apply -f -
# Restart CoreDNS pods to apply the changes
echo "Restarting CoreDNS pods to apply changes..."
kubectl delete pod -n kube-system -l k8s-app=kube-dns
kubectl rollout restart deployment/coredns -n kube-system
kubectl rollout status deployment/coredns -n kube-system
echo "CoreDNS setup complete!"