Improved multi-server node testing and tweaks

scripts/openvswitch.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+### Setup openvswitch
+echo "Install and enable OVS:"
+
+sudo apt update
+sudo apt install -y openvswitch-switch
+sudo systemctl enable --now openvswitch-switch
+
+echo "Sysctls (overlay-friendly, avoids rp_filter pain):"
+
+sudo tee /etc/sysctl.d/99-mulga-vpc.conf >/dev/null <<'EOF'
+net.ipv4.ip_forward=1
+net.ipv4.conf.all.rp_filter=0
+net.ipv4.conf.default.rp_filter=0
+EOF
+sudo sysctl --system
+
+echo "1) Create br-int on BOTH hosts"
+
+sudo ovs-vsctl --may-exist add-br br-int
+sudo ip link set br-int up
+
+echo "Creating TAP for tap-vm1"
+
+# Consider, adduser hive, for all services used.
+sudo ip tuntap add dev tap-vm1 mode tap user $USER
+sudo ip link set tap-vm1 mtu 1450
+sudo ip link set tap-vm1 up
+ip link show tap-vm1
+
+echo "Creating flows on host1"
+
+sudo ovs-ofctl del-flows br-int
+
+sudo ovs-vsctl --may-exist add-port br-int tap-vm1
+
+# VM -> Geneve (set VNI)
+sudo ovs-ofctl add-flow br-int "in_port=tap-vm1,actions=set_tunnel:10302,output:geneve-h2"
+
+# Geneve -> VM (only that VNI)
+sudo ovs-ofctl add-flow br-int "in_port=geneve-h2,tun_id=10302,actions=output:tap-vm1"
+
+# Creating 
+#echo "Creating flows on host2"
+
+#sudo ovs-vsctl --may-exist add-port br-int tap-vm1
+
+#sudo ovs-ofctl del-flows br-int
+
+# VM -> Geneve (set VNI)
+#sudo ovs-ofctl add-flow br-int "in_port=tap-vm1,actions=set_tunnel:10302,output:geneve-h1"
+
+# Geneve -> VM (only that VNI)
+#sudo ovs-ofctl add-flow br-int "in_port=geneve-h1,tun_id=10302,actions=output:tap-vm1"
+