Ensure we have the kernel modules loaded for weave-npc

prog/weave-kube/launch.sh

@@ -15,6 +15,12 @@ CONN_LIMIT=${CONN_LIMIT:-30}
 # Default for network policy
 EXPECT_NPC=${EXPECT_NPC:-1}
 
+# Ensure we have the required modules for NPC
+if [ "${EXPECT_NPC}" != "0" ]; then
+    modprobe br_netfilter
+    modprobe xt_set
+fi
+
 # kube-proxy requires that bridged traffic passes through netfilter
 if ! BRIDGE_NF_ENABLED=$(cat /proc/sys/net/bridge/bridge-nf-call-iptables); then
     echo "Cannot detect bridge-nf support - network policy and iptables mode kubeproxy may not work reliably" >&2

prog/weave-kube/weave-daemonset.yaml

@@ -46,6 +46,8 @@ spec:
               mountPath: /host/etc
             - name: dbus
               mountPath: /host/var/lib/dbus
+            - name: lib-modules
+              mountPath: /lib/modules
           resources:
             requests:
               cpu: 10m
@@ -73,3 +75,6 @@ spec:
         - name: dbus
           hostPath:
             path: /var/lib/dbus
+        - name: lib-modules
+          hostPath:
+            path: /lib/modules