sdarbinyan
f4ea4c7af8
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Architecture Governance / architecture (push) Has been cancelled
136 lines
4.2 KiB
Bash
Executable File
136 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Attach one customer domain to this server and issue a TLS certificate.
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# Idempotent: re-running for an existing domain renews/repairs rather than duplicates.
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# Run as root, AFTER the domain's A/AAAA record already resolves to this server.
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#
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# bash add-domain.sh shop.example.com --email ops@example.com
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# bash add-domain.sh shop.example.com --email ops@example.com --with-www
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#
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# Why per-domain blocks exist at all: the application is multi-tenant off the
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# Host header and needs no per-domain root. Certificates are the exception —
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# certbot must match a concrete server_name, which `default_server _` is not.
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set -euo pipefail
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DOMAIN="${1:-}"; shift || true
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EMAIL=""
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WITH_WWW=0
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--email) EMAIL="$2"; shift 2 ;;
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--with-www) WITH_WWW=1; shift ;;
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*) echo "unknown argument: $1" >&2; exit 2 ;;
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esac
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done
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[[ $EUID -eq 0 ]] || { echo "must run as root" >&2; exit 1; }
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[[ -n "$DOMAIN" ]] || { echo "usage: add-domain.sh <domain> --email <address> [--with-www]" >&2; exit 2; }
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[[ -n "$EMAIL" ]] || { echo "--email is required (certbot expiry notices)" >&2; exit 2; }
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# Fail loudly rather than let certbot fail obscurely on an unpointed domain.
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echo "==> checking DNS for $DOMAIN"
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RESOLVED="$(getent hosts "$DOMAIN" | awk '{print $1}' | head -1 || true)"
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if [[ -z "$RESOLVED" ]]; then
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echo "ERROR: $DOMAIN does not resolve. Point its A record at this server first." >&2
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exit 1
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fi
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echo " resolves to $RESOLVED"
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NAMES="$DOMAIN"
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CERT_ARGS=(-d "$DOMAIN")
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if [[ $WITH_WWW -eq 1 ]]; then
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NAMES="$DOMAIN www.$DOMAIN"
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CERT_ARGS+=(-d "www.$DOMAIN")
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fi
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CONF="/etc/nginx/sites-available/tenant-$DOMAIN.conf"
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echo "==> nginx server block: $CONF"
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cat > "$CONF" <<NGINX
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# Tenant domain: $DOMAIN
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# Same root as the catch-all — the SPA resolves the tenant from the Host header.
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# This block exists so certbot has a concrete server_name to attach TLS to.
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server {
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listen 80;
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listen [::]:80;
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server_name $NAMES;
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root /srv/marketplaces/current/frontend;
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index index.html;
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location = /index.html {
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add_header Cache-Control "no-store, must-revalidate" always;
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try_files \$uri =404;
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}
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location ~* \.(js|css|woff2?|png|jpe?g|svg|gif|webp|avif|ico)\$ {
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expires 1y;
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add_header Cache-Control "public, immutable" always;
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try_files \$uri =404;
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}
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location /health {
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access_log off;
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return 200 "ok\n";
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add_header Content-Type text/plain;
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}
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location /api/ {
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proxy_pass http://127.0.0.1:8080;
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proxy_http_version 1.1;
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proxy_set_header Host \$host;
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proxy_set_header X-Real-IP \$remote_addr;
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proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto \$scheme;
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proxy_read_timeout 60s;
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}
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location /backend/ {
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proxy_pass http://127.0.0.1:8080/;
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proxy_http_version 1.1;
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proxy_set_header Host \$host;
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proxy_set_header X-Real-IP \$remote_addr;
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proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto \$scheme;
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proxy_read_timeout 60s;
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}
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location / {
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try_files \$uri \$uri/ /index.html;
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}
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add_header X-Content-Type-Options "nosniff" always;
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add_header X-Frame-Options "SAMEORIGIN" always;
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add_header Referrer-Policy "strict-origin-when-cross-origin" always;
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gzip on;
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gzip_types text/plain text/css application/javascript application/json image/svg+xml;
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gzip_min_length 1024;
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}
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NGINX
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ln -sfn "$CONF" "/etc/nginx/sites-enabled/tenant-$DOMAIN.conf"
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nginx -t
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systemctl reload nginx
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echo "==> certificate"
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# --nginx rewrites the block above in place to add listen 443 + ssl directives
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# and an HTTP->HTTPS redirect. Re-running is a no-op when the cert is current.
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certbot --nginx "${CERT_ARGS[@]}" \
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--non-interactive --agree-tos --email "$EMAIL" \
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--redirect --keep-until-expiring
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nginx -t
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systemctl reload nginx
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echo "==> renewal timer"
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systemctl enable --now certbot.timer
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systemctl status certbot.timer --no-pager | head -3 || true
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echo
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echo "done. verify:"
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echo " curl -I https://$DOMAIN/health"
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echo " certbot certificates | grep -A3 $DOMAIN"
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