feat(profiling): Add CPU and MEM profiling

2026-04-06 13:15:09 +01:00
parent 0dc77c4583
commit fb43c3d526
17 changed files with 472 additions and 2741 deletions
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+# Exit on error
+set -e
+
+# Default values
+NETNS_NAME="myapp"
+VETH_HOST="veth0"
+VETH_NS="veth1"
+HOST_IP="192.168.100.1"
+NS_IP="192.168.100.2"
+SUBNET="192.168.100.0/24"
+PHYSICAL_IF="eth0"
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -n|--namespace)
+      NETNS_NAME="$2"
+      shift 2
+      ;;
+    -p|--physical-if)
+      PHYSICAL_IF="$2"
+      shift 2
+      ;;
+    --help)
+      echo "Usage: $0 [OPTIONS]"
+      echo ""
+      echo "Options:"
+      echo "  -n, --namespace NAME      Namespace name (default: myapp)"
+      echo "  -p, --physical-if NAME    Physical interface (default: eth0)"
+      echo "  --help                    Show this help"
+      exit 0
+      ;;
+    *)
+      echo "Unknown option: $1"
+      echo "Use --help for usage information"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Configuration:"
+echo "  Namespace: $NETNS_NAME"
+echo "  Physical interface: $PHYSICAL_IF"
+echo ""
+
+echo "Creating network namespace: $NETNS_NAME"
+sudo ip netns add $NETNS_NAME
+
+echo "Creating veth pair: $VETH_HOST <-> $VETH_NS"
+sudo ip link add $VETH_HOST type veth peer name $VETH_NS
+
+echo "Moving $VETH_NS into namespace"
+sudo ip link set $VETH_NS netns $NETNS_NAME
+
+echo "Configuring host side ($VETH_HOST)"
+sudo ip addr add $HOST_IP/24 dev $VETH_HOST
+sudo ip link set $VETH_HOST up
+
+echo "Configuring namespace side ($VETH_NS)"
+sudo ip netns exec $NETNS_NAME ip addr add $NS_IP/24 dev $VETH_NS
+sudo ip netns exec $NETNS_NAME ip link set $VETH_NS up
+sudo ip netns exec $NETNS_NAME ip link set lo up
+sudo ip netns exec $NETNS_NAME ip route add default via $HOST_IP
+
+echo "Enabling IP forwarding"
+sudo sysctl -w net.ipv4.ip_forward=1
+
+echo "Disabling IPv6"
+sudo ip netns exec $NETNS_NAME sysctl -w net.ipv6.conf.all.disable_ipv6=1
+
+echo "Setting up NAT"
+sudo iptables -t nat -A POSTROUTING -s $SUBNET -o $PHYSICAL_IF -j MASQUERADE
+
+echo "Setting up forwarding rules"
+sudo iptables -I FORWARD -i $VETH_HOST -o $PHYSICAL_IF -j ACCEPT
+sudo iptables -I FORWARD -i $PHYSICAL_IF -o $VETH_HOST -j ACCEPT
+
+echo ""
+echo "Done! Network namespace '$NETNS_NAME' is ready."
+echo ""
+echo "To run your app in the namespace:"
+echo "  sudo ip netns exec $NETNS_NAME ./your_app"
+echo ""
+echo "To capture traffic:"
+echo "  sudo tshark -i $VETH_HOST -w app.pcap"