Files
openvpn-install/test/client-entrypoint.sh
Stanislas a3389c126c Add Docker-based E2E testing (#1320)
### Summary
- Add automated end-to-end testing using Docker to verify the installation script works across 18 Linux distributions
- Add Oracle Linux 9 support to the installation script
- Drop support for EOL distributions (Debian 8/9/10, CentOS 7, Ubuntu 16.04) 
- Disable Digital Ocean droplets based end-to-end tests, let's use docker from now on

### Changes
**New test infrastructure:**
- `test/Dockerfile.server` - Multi-OS server image with `BASE_IMAGE` build arg
- `test/Dockerfile.client` - Ubuntu 24.04 client for connectivity testing
- `test/server-entrypoint.sh` - Runs install script, verifies files exist, asserts iptables NAT rules, starts OpenVPN
- `test/client-entrypoint.sh` - Connects to VPN, verifies tun0 interface, pings gateway
- `docker-compose.yml` - Orchestrates server + client with shared volume
- `.github/workflows/docker-test.yml` - CI matrix testing 18 OS variants
- `.github/workflows/test.yml` - Removed push/PR triggers, now manual only for DO tests
- `Makefile` - Local testing commands (`make test`, `make test-ubuntu-24.04`, etc.)

**Distributions tested (18 total):**
| Family | Versions |
|--------|----------|
| Ubuntu | 18.04, 20.04, 22.04, 24.04 |
| Debian | 11, 12 |
| Fedora | 40, 41 |
| Rocky Linux | 8, 9 |
| AlmaLinux | 8, 9 |
| Oracle Linux | 8, 9 |
| Amazon Linux | 2, 2023 |
| CentOS Stream | 9 |
| Arch Linux | latest |
2025-12-07 12:27:41 +01:00

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#!/bin/bash
set -e
echo "=== OpenVPN Client Container ==="
# Create TUN device if it doesn't exist
if [ ! -c /dev/net/tun ]; then
mkdir -p /dev/net
mknod /dev/net/tun c 10 200
chmod 600 /dev/net/tun
fi
echo "TUN device ready"
# Wait for client config to be available
echo "Waiting for client config..."
MAX_WAIT=120
WAITED=0
while [ ! -f /shared/client.ovpn ] && [ $WAITED -lt $MAX_WAIT ]; do
sleep 2
WAITED=$((WAITED + 2))
echo "Waiting... ($WAITED/$MAX_WAIT seconds)"
done
if [ ! -f /shared/client.ovpn ]; then
echo "ERROR: Client config not found after ${MAX_WAIT}s"
exit 1
fi
echo "Client config found!"
cat /shared/client.ovpn
# Connect to VPN
echo "Connecting to OpenVPN server..."
openvpn --config /shared/client.ovpn --daemon --log /var/log/openvpn.log
# Wait for connection
echo "Waiting for VPN connection..."
MAX_WAIT=60
WAITED=0
while ! ip addr show tun0 2>/dev/null | grep -q "inet " && [ $WAITED -lt $MAX_WAIT ]; do
sleep 2
WAITED=$((WAITED + 2))
echo "Waiting for tun0... ($WAITED/$MAX_WAIT seconds)"
# Check for errors
if [ -f /var/log/openvpn.log ]; then
tail -5 /var/log/openvpn.log
fi
done
if ! ip addr show tun0 2>/dev/null | grep -q "inet "; then
echo "ERROR: VPN connection failed"
echo "=== OpenVPN log ==="
cat /var/log/openvpn.log || true
exit 1
fi
echo "=== VPN Connected! ==="
ip addr show tun0
# Run connectivity tests
echo ""
echo "=== Running connectivity tests ==="
# Test 1: Check tun0 interface
echo "Test 1: Checking tun0 interface..."
if ip addr show tun0 | grep -q "10.8.0"; then
echo "PASS: tun0 interface has correct IP range (10.8.0.x)"
else
echo "FAIL: tun0 interface doesn't have expected IP"
exit 1
fi
# Test 2: Ping VPN gateway
echo "Test 2: Pinging VPN gateway (10.8.0.1)..."
if ping -c 3 10.8.0.1; then
echo "PASS: Can ping VPN gateway"
else
echo "FAIL: Cannot ping VPN gateway"
exit 1
fi
echo ""
echo "=========================================="
echo " ALL TESTS PASSED!"
echo "=========================================="
# Keep container running for debugging if needed
exec tail -f /var/log/openvpn.log