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#!/usr/bin/env bash
# ship-setup: Configure a VPS for ship deployments.
# Usage: ./setup.sh <ssh-host> <base-domain> <nickname> [--default]
#
# - Idempotent: safe to run multiple times
# - Mirrors the behavior of `ship host init` from the Go CLI
# - Updates ~/.config/ship/config.json with the new host
set -euo pipefail
# ── Args ────────────────────────────────────────────────────────────────────
if [ $# -lt 3 ]; then
echo "Usage: $0 <ssh-host> <base-domain> <nickname> [--default]"
echo " ssh-host: SSH connection string or alias (e.g. ubuntu@1.2.3.4 or alaskav6)"
echo " base-domain: Base domain for this server (e.g. example.com)"
echo " nickname: Short name for this host (e.g. prod, staging)"
echo " --default: Make this the default host"
exit 1
fi
SSH_HOST="$1"
DOMAIN="$2"
NICKNAME="$3"
MAKE_DEFAULT=false
if [ "${4:-}" = "--default" ]; then
MAKE_DEFAULT=true
fi
CONFIG_FILE="$HOME/.config/ship/config.json"
# ── Step 1: Test SSH connection ──────────────────────────────────────────────
echo "→ Testing SSH connection to $SSH_HOST..."
if ! ssh -o ConnectTimeout=5 -o BatchMode=yes "$SSH_HOST" "echo ok" &>/dev/null; then
echo "✗ SSH connection failed. Make sure your key is authorized:"
echo " ssh-copy-id $SSH_HOST"
exit 1
fi
echo " ✓ Connected"
# ── Step 2: Detect OS ────────────────────────────────────────────────────────
echo "→ Detecting OS..."
OS_RELEASE=$(ssh "$SSH_HOST" "cat /etc/os-release")
if ! echo "$OS_RELEASE" | grep -qE "Ubuntu|Debian"; then
echo "✗ Unsupported OS. Only Ubuntu and Debian are supported."
exit 1
fi
echo " ✓ OS supported"
# ── Step 3: Install Caddy (if not present) ───────────────────────────────────
echo "→ Checking Caddy..."
if ssh "$SSH_HOST" "which caddy" &>/dev/null; then
echo " ✓ Caddy already installed"
else
echo " Installing Caddy..."
ssh "$SSH_HOST" "sudo apt-get update -qq && \
sudo apt-get install -y -qq debian-keyring debian-archive-keyring apt-transport-https curl gnupg && \
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' -o /tmp/caddy.gpg && \
sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg < /tmp/caddy.gpg && \
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list && \
sudo apt-get update -qq && \
sudo apt-get install -y -qq caddy"
echo " ✓ Caddy installed"
fi
# ── Step 4: Configure Caddyfile (only if not already set up) ─────────────────
echo "→ Checking Caddyfile..."
if ssh "$SSH_HOST" "sudo test -f /etc/caddy/Caddyfile && sudo grep -q 'sites-enabled' /etc/caddy/Caddyfile" 2>/dev/null; then
echo " ✓ Caddyfile already configured"
else
echo " Writing Caddyfile..."
ssh "$SSH_HOST" "echo '{
}
import /etc/caddy/sites-enabled/*' | sudo tee /etc/caddy/Caddyfile > /dev/null"
echo " ✓ Caddyfile configured"
fi
# ── Step 5: Create directory structure ───────────────────────────────────────
echo "→ Creating directories..."
ssh "$SSH_HOST" "sudo mkdir -p \
/etc/ship/env \
/etc/ship/ports \
/etc/ship/ttl \
/etc/ship/overrides \
/etc/caddy/sites-enabled \
/var/www && \
sudo chmod 755 /etc/ship"
echo " ✓ Directories ready"
# ── Step 6: Enable and start Caddy ───────────────────────────────────────────
echo "→ Enabling Caddy..."
ssh "$SSH_HOST" "sudo systemctl enable caddy && sudo systemctl start caddy || sudo systemctl reload caddy"
echo " ✓ Caddy running"
# ── Step 7: Save config locally ──────────────────────────────────────────────
echo "→ Saving host config to $CONFIG_FILE..."
mkdir -p "$(dirname "$CONFIG_FILE")"
python3 - <<EOF
import json, os
path = os.path.expanduser("$CONFIG_FILE")
cfg = {"default": None, "hosts": {}}
if os.path.exists(path):
with open(path) as f:
cfg = json.load(f)
cfg["hosts"]["$NICKNAME"] = {
"host": "$SSH_HOST",
"domain": "$DOMAIN"
}
if cfg["default"] is None or "$MAKE_DEFAULT" == "true":
cfg["default"] = "$NICKNAME"
with open(path, "w") as f:
json.dump(cfg, f, indent=2)
f.write("\n")
print(f" Hosts: {list(cfg['hosts'].keys())}")
print(f" Default: {cfg['default']}")
EOF
echo " ✓ Config saved"
# ── Done ─────────────────────────────────────────────────────────────────────
echo ""
echo "✓ $NICKNAME ($SSH_HOST) is ready for deployments"
echo " Domain: $DOMAIN"
if [ "$MAKE_DEFAULT" = true ]; then
echo " Set as default host"
fi
echo ""
echo "Next steps:"
echo " Deploy a binary: /ship-deploy"
echo " Check what's running: /ship-status"
echo " Add another host: ./setup.sh <host> <domain> <nickname>"
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