Configure MetalLB BGP service network

2026-09-03 02:19:46 +01:00
parent 4cb6bc9ec4
commit 502de4fdf0
11 changed files with 186 additions and 173 deletions
@@ -0,0 +1,23 @@
+# BGPAdvertisement tells MetalLB to announce allocated Service addresses as
+# routes to the MikroTik peer defined in bgppeer.yaml. Unlike Layer 2 mode,
+# the workers do not need an interface inside 10.10.60.0/24: the router learns
+# that each allocated address is reachable through the Kubernetes nodes.
+#
+# `aggregationLength: 32` advertises only addresses that a Service actually
+# owns, as individual IPv4 host routes. Advertising the whole /24 would make
+# the router send every address in the pool toward the cluster, including
+# unallocated ones.
+#
+# Sync wave 1 defers this custom resource until the MetalLB chart's CRDs and
+# controllers from wave 0 are available.
+apiVersion: metallb.io/v1beta1
+kind: BGPAdvertisement
+metadata:
+  name: default
+  namespace: metallb-system
+  annotations:
+    argocd.argoproj.io/sync-wave: "1"
+spec:
+  ipAddressPools:
+    - default-pool
+  aggregationLength: 32