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linux-scripts/nginx-geoip-setup.sh
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#!/bin/bash
################################################################################
# Script Name: nginx-geoip-setup.sh
# Version: 1.0
# Description: Automate nginx GeoIP2 enrichment for IP intelligence.
# Installs GeoIP2 module, downloads GeoIP databases (MaxMind or
# DB-IP free), creates nginx geoip2 variable mappings and an
# enriched log format.
#
# Author: Phil Connor
# Contact: contact@mylinux.work
# Website: https://mylinux.work
# License: MIT
#
# Prerequisites:
# - nginx installed and running
# - Root access
# - MaxMind account OR use --db-ip for no-signup alternative
#
# Usage:
# sudo ./nginx-geoip-setup.sh --db-ip
# sudo ./nginx-geoip-setup.sh --account-id 123456 --license-key ABCDEF
# sudo ./nginx-geoip-setup.sh --dry-run
# sudo ./nginx-geoip-setup.sh --remove
# sudo ./nginx-geoip-setup.sh --skip-packages
#
################################################################################
set -euo pipefail
# --- Configuration ---
GEOIP_CONF="/etc/GeoIP.conf"
GEOIP_DB_DIR="/usr/share/GeoIP"
NGINX_GEOIP_CONF="/etc/nginx/conf.d/geoip2.conf"
NGINX_LOG_CONF="/etc/nginx/enriched-log-format.conf"
CRON_WEEKLY="/etc/cron.weekly/geoip-db-update"
CRON_MONTHLY="/etc/cron.monthly/geoip-db-update"
MARKER_START="# nginx-geoip-managed-start"
MARKER_END="# nginx-geoip-managed-end"
TIMESTAMP=$(date +%s)
DRY_RUN=false
REMOVE=false
SKIP_PACKAGES=false
USE_DBIP=false
ACCOUNT_ID="${MAXMIND_ACCOUNT_ID:-}"
LICENSE_KEY="${MAXMIND_LICENSE_KEY:-}"
# --- Colors ---
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
CYAN='\033[0;36m'
BOLD='\033[1m'
NC='\033[0m'
info() { echo -e "${GREEN}[OK]${NC} $*"; }
warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }
step() { echo -e "${CYAN}[STEP]${NC} $*"; }
usage() {
cat <<EOF
Usage: sudo $(basename "$0") [OPTIONS]
Sets up nginx GeoIP2 enrichment using MaxMind GeoLite2 or DB-IP free databases.
Creates geoip2 variable mappings and an enriched log format for nginx.
Options:
--db-ip Use DB-IP free databases (no signup required)
--account-id ID MaxMind account ID (not needed with --db-ip)
--license-key KEY MaxMind license key (not needed with --db-ip)
--dry-run Show what would be done without making changes
--remove Remove managed configs and update script (leaves packages/databases)
--skip-packages Skip package installation
-h, --help Show this help
Environment variables:
MAXMIND_ACCOUNT_ID MaxMind account ID (overridden by --account-id)
MAXMIND_LICENSE_KEY MaxMind license key (overridden by --license-key)
Database providers:
MaxMind GeoLite2 Free, requires account signup at maxmind.com
DB-IP Lite Free, no signup, direct download (--db-ip)
Examples:
sudo $(basename "$0") --db-ip
sudo $(basename "$0") --account-id 123456 --license-key ABCDEF
sudo $(basename "$0") --dry-run
sudo $(basename "$0") --remove
EOF
exit 0
}
# --- Argument parsing ---
while [[ $# -gt 0 ]]; do
case "$1" in
--db-ip) USE_DBIP=true; shift ;;
--account-id) ACCOUNT_ID="$2"; shift 2 ;;
--license-key) LICENSE_KEY="$2"; shift 2 ;;
--dry-run) DRY_RUN=true; shift ;;
--remove) REMOVE=true; shift ;;
--skip-packages) SKIP_PACKAGES=true; shift ;;
-h|--help) usage ;;
*) echo "Unknown option: $1"; usage ;;
esac
done
# --- Checks ---
if [[ $EUID -ne 0 ]]; then
echo -e "${RED}Error: Run as root (sudo)${NC}" >&2
exit 1
fi
if ! command -v nginx &>/dev/null; then
echo -e "${RED}Error: nginx not found${NC}" >&2
exit 1
fi
# --- Distro detection ---
detect_distro() {
if [[ -f /etc/os-release ]]; then
# shellcheck source=/dev/null
. /etc/os-release
case "$ID" in
debian|ubuntu|linuxmint) echo "debian" ;;
rhel|centos|rocky|alma|fedora|ol) echo "rhel" ;;
*) echo "unknown" ;;
esac
else
echo "unknown"
fi
}
DISTRO=$(detect_distro)
backup_file() {
local file="$1"
if [[ -f "$file" ]]; then
cp "$file" "${file}.bak.${TIMESTAMP}"
warn "Backed up: ${file}${file}.bak.${TIMESTAMP}"
fi
}
# =====================================================
# REMOVE MODE
# =====================================================
if [[ "$REMOVE" == "true" ]]; then
step "Removing GeoIP2 configuration"
for file in "$NGINX_GEOIP_CONF" "$NGINX_LOG_CONF" "$CRON_WEEKLY" "$CRON_MONTHLY"; do
if [[ -f "$file" ]]; then
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would remove: ${file}"
else
rm -f "$file"
info "Removed: ${file}"
fi
else
warn "Not found: ${file} (already removed?)"
fi
done
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: nginx -t"
echo " Would run: systemctl reload nginx"
else
step "Testing nginx configuration"
if nginx -t 2>&1; then
info "nginx config valid"
else
echo -e "${RED}[ERROR] nginx config test failed${NC}" >&2
exit 1
fi
step "Reloading nginx"
systemctl reload nginx
info "nginx reloaded"
fi
echo ""
echo -e "${BOLD}GeoIP2 configuration removed.${NC}"
echo " Packages and databases left in place."
echo " To remove databases: rm -rf ${GEOIP_DB_DIR}/*.mmdb"
exit 0
fi
# =====================================================
# INSTALL MODE
# =====================================================
# --- Prompt for credentials if not using DB-IP ---
if [[ "$USE_DBIP" != "true" ]]; then
if [[ -z "$ACCOUNT_ID" ]]; then
read -rp "MaxMind Account ID (or Ctrl+C and rerun with --db-ip): " ACCOUNT_ID
fi
if [[ -z "$LICENSE_KEY" ]]; then
read -rp "MaxMind License Key: " LICENSE_KEY
fi
if [[ -z "$ACCOUNT_ID" || -z "$LICENSE_KEY" ]]; then
echo -e "${RED}Error: MaxMind credentials required (or use --db-ip for no-signup alternative)${NC}" >&2
exit 1
fi
fi
# =====================================================
# Step 1: Install packages
# =====================================================
if [[ "$SKIP_PACKAGES" == "true" ]]; then
warn "Skipping package installation (--skip-packages)"
else
step "Installing GeoIP2 packages"
if [[ "$DISTRO" == "debian" ]]; then
if [[ "$USE_DBIP" == "true" ]]; then
PACKAGES="libnginx-mod-http-geoip2 mmdb-bin curl"
else
PACKAGES="libnginx-mod-http-geoip2 geoipupdate mmdb-bin"
fi
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: apt-get update && apt-get install -y ${PACKAGES}"
else
apt-get update -qq
# shellcheck disable=SC2086
apt-get install -y $PACKAGES
info "Packages installed: ${PACKAGES}"
fi
elif [[ "$DISTRO" == "rhel" ]]; then
if [[ "$USE_DBIP" == "true" ]]; then
PACKAGES="nginx-mod-http-geoip2 mmdb-bin curl"
else
PACKAGES="nginx-mod-http-geoip2 geoipupdate mmdb-bin"
fi
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: dnf install -y ${PACKAGES}"
else
# shellcheck disable=SC2086
dnf install -y $PACKAGES
info "Packages installed: ${PACKAGES}"
fi
else
echo -e "${RED}Error: Unsupported distro. Install packages manually and rerun with --skip-packages${NC}" >&2
exit 1
fi
fi
# =====================================================
# Step 2: Write GeoIP.conf (MaxMind only)
# =====================================================
if [[ "$USE_DBIP" != "true" ]]; then
step "Writing MaxMind configuration to ${GEOIP_CONF}"
GEOIP_CONF_CONTENT="${MARKER_START}
AccountID ${ACCOUNT_ID}
LicenseKey ${LICENSE_KEY}
EditionIDs GeoLite2-City GeoLite2-ASN GeoLite2-Country
DatabaseDirectory ${GEOIP_DB_DIR}
${MARKER_END}"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would create: ${GEOIP_CONF}"
else
backup_file "$GEOIP_CONF"
echo "$GEOIP_CONF_CONTENT" > "$GEOIP_CONF"
chmod 600 "$GEOIP_CONF"
info "Created: ${GEOIP_CONF}"
fi
fi
# =====================================================
# Step 3: Download GeoIP databases
# =====================================================
if [[ "$USE_DBIP" == "true" ]]; then
step "Downloading DB-IP free databases to ${GEOIP_DB_DIR}"
DBIP_MONTH=$(date +%Y-%m)
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would download: dbip-country-lite-${DBIP_MONTH}.mmdb.gz"
echo " Would download: dbip-asn-lite-${DBIP_MONTH}.mmdb.gz"
else
mkdir -p "$GEOIP_DB_DIR"
TMPDIR=$(mktemp -d)
trap 'rm -rf "$TMPDIR"' EXIT
curl -fsSL "https://download.db-ip.com/free/dbip-country-lite-${DBIP_MONTH}.mmdb.gz" -o "${TMPDIR}/country.mmdb.gz"
curl -fsSL "https://download.db-ip.com/free/dbip-asn-lite-${DBIP_MONTH}.mmdb.gz" -o "${TMPDIR}/asn.mmdb.gz"
gunzip -f "${TMPDIR}/country.mmdb.gz"
gunzip -f "${TMPDIR}/asn.mmdb.gz"
mv "${TMPDIR}/country.mmdb" "${GEOIP_DB_DIR}/GeoLite2-City.mmdb"
mv "${TMPDIR}/asn.mmdb" "${GEOIP_DB_DIR}/GeoLite2-ASN.mmdb"
info "Downloaded: DB-IP Country → GeoLite2-City.mmdb"
info "Downloaded: DB-IP ASN → GeoLite2-ASN.mmdb"
fi
else
step "Downloading MaxMind GeoIP2 databases to ${GEOIP_DB_DIR}"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: mkdir -p ${GEOIP_DB_DIR}"
echo " Would run: geoipupdate"
else
mkdir -p "$GEOIP_DB_DIR"
geoipupdate -v
info "GeoIP2 databases downloaded"
fi
fi
# =====================================================
# Step 4: Create nginx geoip2 config
# =====================================================
step "Creating nginx GeoIP2 config at ${NGINX_GEOIP_CONF}"
NGINX_GEOIP_CONTENT="${MARKER_START}
# GeoIP2 variable mappings — generated by nginx-geoip-setup.sh
geoip2 ${GEOIP_DB_DIR}/GeoLite2-City.mmdb {
auto_reload 60m;
\$geoip2_country_code country iso_code;
\$geoip2_country_name country names en;
\$geoip2_city_name city names en;
}
geoip2 ${GEOIP_DB_DIR}/GeoLite2-ASN.mmdb {
auto_reload 60m;
\$geoip2_asn autonomous_system_number;
\$geoip2_asn_org autonomous_system_organization;
}
${MARKER_END}"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would create: ${NGINX_GEOIP_CONF}"
else
backup_file "$NGINX_GEOIP_CONF"
echo "$NGINX_GEOIP_CONTENT" > "$NGINX_GEOIP_CONF"
info "Created: ${NGINX_GEOIP_CONF}"
fi
# =====================================================
# Step 5: Create enriched log format
# =====================================================
step "Creating enriched log format at ${NGINX_LOG_CONF}"
NGINX_LOG_CONTENT="${MARKER_START}
# Enriched log format with GeoIP2 data — generated by nginx-geoip-setup.sh
log_format enriched '\$remote_addr - \$remote_user [\$time_local] '
'\"\$request\" \$status \$body_bytes_sent '
'\"\$http_referer\" \"\$http_user_agent\" '
'\$geoip2_country_code \"\$geoip2_asn_org\"';
${MARKER_END}"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would create: ${NGINX_LOG_CONF}"
else
backup_file "$NGINX_LOG_CONF"
echo "$NGINX_LOG_CONTENT" > "$NGINX_LOG_CONF"
info "Created: ${NGINX_LOG_CONF}"
fi
# =====================================================
# Step 6: Patch nginx.conf to use enriched log format
# =====================================================
NGINX_CONF="/etc/nginx/nginx.conf"
if grep -q "enriched-log-format.conf" "$NGINX_CONF" 2>/dev/null; then
warn "nginx.conf already includes enriched log format — skipping"
elif grep -q "access_log.*enriched" "$NGINX_CONF" 2>/dev/null; then
warn "nginx.conf already uses enriched format — skipping"
else
step "Patching ${NGINX_CONF} to use enriched log format"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would add: include ${NGINX_LOG_CONF}; before access_log"
echo " Would change: access_log line to use enriched format"
else
backup_file "$NGINX_CONF"
# Insert include before the access_log line, and append 'enriched' to it
sed -i "/^[[:space:]]*access_log[[:space:]]/ {
i\\\\tinclude ${NGINX_LOG_CONF};
s|access_log \(.*\);|access_log \1 enriched;|
}" "$NGINX_CONF"
# Only patch if access_log doesn't already have a format name (avoid double-appending)
# Check if the sed worked
if grep -q "enriched-log-format.conf" "$NGINX_CONF"; then
info "Patched: ${NGINX_CONF}"
else
warn "Could not find access_log line in ${NGINX_CONF} — add manually:"
warn " include ${NGINX_LOG_CONF};"
warn " access_log /var/log/nginx/access.log enriched;"
fi
fi
fi
# =====================================================
# Step 7: Create cron job for database updates
# =====================================================
if [[ "$USE_DBIP" == "true" ]]; then
CRON_FILE="$CRON_MONTHLY"
step "Creating monthly DB-IP update script at ${CRON_FILE}"
CRON_CONTENT="#!/bin/sh
# Monthly DB-IP database update — generated by nginx-geoip-setup.sh
MONTH=\$(date +%Y-%m)
TMPDIR=\$(mktemp -d)
trap 'rm -rf \"\$TMPDIR\"' EXIT
if curl -fsSL \"https://download.db-ip.com/free/dbip-country-lite-\${MONTH}.mmdb.gz\" -o \"\${TMPDIR}/country.mmdb.gz\" && \\
curl -fsSL \"https://download.db-ip.com/free/dbip-asn-lite-\${MONTH}.mmdb.gz\" -o \"\${TMPDIR}/asn.mmdb.gz\" && \\
gunzip \"\${TMPDIR}/country.mmdb.gz\" && \\
gunzip \"\${TMPDIR}/asn.mmdb.gz\"; then
mv \"\${TMPDIR}/country.mmdb\" \"${GEOIP_DB_DIR}/GeoLite2-City.mmdb\"
mv \"\${TMPDIR}/asn.mmdb\" \"${GEOIP_DB_DIR}/GeoLite2-ASN.mmdb\"
logger -t dbip-update \"DB-IP databases updated\"
else
logger -t dbip-update -p user.err \"DB-IP download failed — kept existing databases\"
fi"
else
CRON_FILE="$CRON_WEEKLY"
step "Creating weekly geoipupdate script at ${CRON_FILE}"
CRON_CONTENT="#!/bin/sh
# Weekly GeoIP2 database update — generated by nginx-geoip-setup.sh
/usr/bin/geoipupdate -s 2>&1 | logger -t geoipupdate"
fi
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would create: ${CRON_FILE}"
else
backup_file "$CRON_FILE"
echo "$CRON_CONTENT" > "$CRON_FILE"
chmod 755 "$CRON_FILE"
info "Created: ${CRON_FILE}"
fi
# =====================================================
# Step 8: Validate nginx config
# =====================================================
step "Testing nginx configuration"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: nginx -t"
else
if nginx -t 2>&1; then
info "nginx config valid"
else
echo -e "${RED}[ERROR] nginx config test failed${NC}" >&2
echo " Restore backups (.bak.${TIMESTAMP}) and check configuration" >&2
exit 1
fi
fi
# =====================================================
# Step 9: Reload nginx
# =====================================================
step "Reloading nginx"
if [[ "$DRY_RUN" == "true" ]]; then
echo " Would run: systemctl reload nginx"
else
systemctl reload nginx
info "nginx reloaded"
fi
# =====================================================
# Summary
# =====================================================
echo ""
echo -e "${BOLD}Done.${NC}"
echo ""
if [[ "$USE_DBIP" == "true" ]]; then
echo " Provider: DB-IP Lite (no signup)"
else
echo " Provider: MaxMind GeoLite2"
echo " GeoIP config: ${GEOIP_CONF}"
fi
echo " Database dir: ${GEOIP_DB_DIR}"
echo " nginx geoip2: ${NGINX_GEOIP_CONF}"
echo " Log format: ${NGINX_LOG_CONF}"
echo " Cron job: ${CRON_FILE}"
echo ""
echo -e "${BOLD}Verify:${NC}"
echo " tail -5 /var/log/nginx/access.log"
echo " (should show country code and ASN org at end of each line)"
echo ""
echo " To remove: sudo $(basename "$0") --remove"