admin
d0c77893f7
- setup-webserver.sh: idempotent Ubuntu 24.04 LAMP provisioning (Apache event MPM + PHP 8.3-FPM + MariaDB + Node/Python, phpMyAdmin, Composer, Certbot, UFW, Fail2ban; optional components prompted/env-gated) - add-vhost.sh: add an Apache virtual host, optional DB + TLS - CHEATSHEET.md: day-to-day server CLI reference - README.md: setup instructions and env-var matrix Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
431 lines
24 KiB
Bash
431 lines
24 KiB
Bash
#!/usr/bin/env bash
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#
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# setup-webserver.sh — Fresh web server provisioning for Ubuntu 24.04 LTS
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#
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# Stack: Apache (event MPM) + PHP 8.3-FPM + MariaDB + Node + Python
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# + phpMyAdmin (IP-restricted) + Composer + Certbot + UFW + Fail2ban
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#
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# .htaccess works: mod_rewrite enabled, AllowOverride All on web root.
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#
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# Idempotent: safe to re-run. Each section guarded.
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# Run as root or with sudo: sudo bash setup-webserver.sh
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#
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set -euo pipefail
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#─────────────────────────────────────────────────────────────────────────────
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# CONFIG — edit these before running
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#─────────────────────────────────────────────────────────────────────────────
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WEB_ROOT="/var/www/html"
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SERVER_NAME="${SERVER_NAME:-_}" # e.g. example.com (default: catch-all)
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ADMIN_EMAIL="${ADMIN_EMAIL:-admin@example.com}" # for certbot
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TIMEZONE="${TIMEZONE:-UTC}"
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# phpMyAdmin access restriction — only these IPs/CIDRs may reach it.
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# Set to your office/home IP. Empty = localhost only (use SSH tunnel).
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PMA_ALLOW_IPS="${PMA_ALLOW_IPS:-127.0.0.1}"
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# Feature toggles — left UNSET so the script PROMPTS for each (Enter = default).
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# Set any via env to skip its prompt (good for automation/CI):
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# sudo INSTALL_NODE=no INSTALL_SWAP=yes bash setup-webserver.sh
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# Values: yes | no
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#
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# INSTALL_PHPMYADMIN (default yes) phpMyAdmin, IP-restricted
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# INSTALL_NODE (default yes) Node.js + PM2
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# INSTALL_REDIS (default yes) Redis + php-redis
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# INSTALL_CERTBOT (default yes) certbot (cert requested later, manually)
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# INSTALL_SWAP (default yes if RAM<4GB) swapfile
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# HARDEN_SSH (default no) key-only SSH <-- lockout risk, asks twice
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# INSTALL_DB_BACKUP (default yes) nightly mysqldump cron
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# TUNE_PHP (default yes) OPcache + FPM pool tuning
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# INSTALL_HEALTHCHECK (default yes) /usr/local/bin/healthcheck
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NODE_MAJOR="${NODE_MAJOR:-22}" # NodeSource LTS line
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PHP_VER="8.3" # Ubuntu 24.04 default
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#─────────────────────────────────────────────────────────────────────────────
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# Helpers
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#─────────────────────────────────────────────────────────────────────────────
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log() { printf '\n\033[1;32m==> %s\033[0m\n' "$*"; }
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warn() { printf '\033[1;33m!! %s\033[0m\n' "$*"; }
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die() { printf '\033[1;31mXX %s\033[0m\n' "$*" >&2; exit 1; }
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# Prompt only when stdin is a real terminal; else use env/default (CI-safe).
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interactive() { [[ -t 0 ]]; }
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# ask_yn VAR "Question" default(yes/no)
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# - if VAR already set (via env): keep it, no prompt
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# - else if interactive: ask, Enter = default
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# - else (no TTY): use default
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ask_yn() {
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local __var="$1" __q="$2" __def="${3:-no}" __cur="${!1:-}"
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[[ -n "$__cur" ]] && return
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if interactive; then
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local __ans
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read -rp " ? $__q [$( [[ $__def == yes ]] && echo Y/n || echo y/N )]: " __ans
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__ans="${__ans:-$__def}"
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case "$__ans" in [Yy]*) printf -v "$__var" yes;; *) printf -v "$__var" no;; esac
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else
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printf -v "$__var" '%s' "$__def"
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fi
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}
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[[ $EUID -eq 0 ]] || die "Run as root: sudo bash $0"
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. /etc/os-release
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[[ "${VERSION_ID:-}" == "24.04" ]] || warn "Tested on 24.04, found ${VERSION_ID:-unknown} — continuing"
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export DEBIAN_FRONTEND=noninteractive
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# Detect RAM (MB) to pick swap default
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RAM_MB=$(free -m | awk '/^Mem:/{print $2}')
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#─────────────────────────────────────────────────────────────────────────────
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log "Choose what to install (Enter = default)"
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#─────────────────────────────────────────────────────────────────────────────
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ask_yn INSTALL_PHPMYADMIN "phpMyAdmin (IP-restricted web DB admin)?" yes
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ask_yn INSTALL_NODE "Node.js ${NODE_MAJOR}.x + PM2?" yes
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ask_yn INSTALL_REDIS "Redis cache + php-redis?" yes
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ask_yn INSTALL_CERTBOT "Certbot (Let's Encrypt TLS tooling)?" yes
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ask_yn INSTALL_SWAP "Swapfile (RAM safety, ${RAM_MB}MB detected)?" "$([[ $RAM_MB -lt 4000 ]] && echo yes || echo no)"
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ask_yn INSTALL_DB_BACKUP "Nightly DB backup cron?" yes
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ask_yn TUNE_PHP "Tune PHP OPcache + FPM pool?" yes
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ask_yn INSTALL_HEALTHCHECK "Install healthcheck command?" yes
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ask_yn HARDEN_SSH "Harden SSH (key-only, no root login)? RISK" no
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#─────────────────────────────────────────────────────────────────────────────
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log "System update + base tools"
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#─────────────────────────────────────────────────────────────────────────────
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apt-get update -y
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apt-get upgrade -y
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apt-get install -y \
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curl wget git unzip zip ca-certificates gnupg lsb-release \
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software-properties-common apt-transport-https \
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htop vim ufw fail2ban unattended-upgrades \
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build-essential pkg-config
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timedatectl set-timezone "$TIMEZONE" || warn "timezone set failed"
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#─────────────────────────────────────────────────────────────────────────────
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log "Apache (event MPM) + mod_rewrite + proxy_fcgi"
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#─────────────────────────────────────────────────────────────────────────────
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apt-get install -y apache2
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# Use event MPM (fast) with PHP-FPM, not prefork/mod_php.
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a2dismod -q mpm_prefork 2>/dev/null || true
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a2enmod -q mpm_event
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a2enmod -q rewrite headers ssl proxy proxy_fcgi setenvif http2
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#─────────────────────────────────────────────────────────────────────────────
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log "PHP ${PHP_VER} + FPM + common extensions"
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#─────────────────────────────────────────────────────────────────────────────
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apt-get install -y \
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php${PHP_VER} php${PHP_VER}-fpm php${PHP_VER}-cli \
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php${PHP_VER}-mysql php${PHP_VER}-curl php${PHP_VER}-gd \
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php${PHP_VER}-mbstring php${PHP_VER}-xml php${PHP_VER}-zip \
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php${PHP_VER}-bcmath php${PHP_VER}-intl php${PHP_VER}-soap \
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php${PHP_VER}-readline php${PHP_VER}-opcache
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# Hand PHP to FPM
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a2enconf -q php${PHP_VER}-fpm
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systemctl enable --now php${PHP_VER}-fpm
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#─────────────────────────────────────────────────────────────────────────────
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log "Apache vhost — .htaccess enabled (AllowOverride All)"
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#─────────────────────────────────────────────────────────────────────────────
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mkdir -p "$WEB_ROOT"
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cat > /etc/apache2/sites-available/000-default.conf <<EOF
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<VirtualHost *:80>
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ServerName ${SERVER_NAME}
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DocumentRoot ${WEB_ROOT}
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<Directory ${WEB_ROOT}>
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Options -Indexes +FollowSymLinks
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AllowOverride All
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Require all granted
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</Directory>
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ErrorLog \${APACHE_LOG_DIR}/error.log
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CustomLog \${APACHE_LOG_DIR}/access.log combined
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</VirtualHost>
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EOF
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# phpinfo test page (delete after verifying)
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[[ -f "${WEB_ROOT}/info.php" ]] || echo "<?php phpinfo();" > "${WEB_ROOT}/info.php"
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chown -R www-data:www-data "$WEB_ROOT"
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systemctl restart apache2
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#─────────────────────────────────────────────────────────────────────────────
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log "MariaDB (MySQL-compatible)"
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#─────────────────────────────────────────────────────────────────────────────
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apt-get install -y mariadb-server mariadb-client
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systemctl enable --now mariadb
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# Non-interactive hardening (mysql_secure_installation equivalent).
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# Root uses unix_socket auth by default on 24.04 — no password needed locally.
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mariadb <<'SQL'
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DELETE FROM mysql.global_priv WHERE User='';
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DELETE FROM mysql.global_priv WHERE User='root' AND Host NOT IN ('localhost','127.0.0.1','::1');
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DROP DATABASE IF EXISTS test;
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DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%';
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FLUSH PRIVILEGES;
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SQL
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warn "MariaDB root uses unix_socket auth — connect with: sudo mariadb"
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#─────────────────────────────────────────────────────────────────────────────
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log "Composer (PHP dependency manager)"
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#─────────────────────────────────────────────────────────────────────────────
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if ! command -v composer >/dev/null; then
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EXPECTED="$(curl -s https://composer.github.io/installer.sig)"
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php -r "copy('https://getcomposer.org/installer','/tmp/composer-setup.php');"
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ACTUAL="$(php -r "echo hash_file('sha384','/tmp/composer-setup.php');")"
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[[ "$EXPECTED" == "$ACTUAL" ]] || die "Composer installer checksum mismatch"
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php /tmp/composer-setup.php --install-dir=/usr/local/bin --filename=composer
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rm -f /tmp/composer-setup.php
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fi
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#─────────────────────────────────────────────────────────────────────────────
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log "Python 3 + pip + venv"
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#─────────────────────────────────────────────────────────────────────────────
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apt-get install -y python3 python3-pip python3-venv python3-dev
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_NODE" == "yes" ]]; then
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log "Node.js ${NODE_MAJOR}.x (NodeSource) + PM2"
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if ! command -v node >/dev/null || [[ "$(node -v 2>/dev/null)" != v${NODE_MAJOR}* ]]; then
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curl -fsSL "https://deb.nodesource.com/setup_${NODE_MAJOR}.x" | bash -
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apt-get install -y nodejs
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fi
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npm install -g pm2
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_REDIS" == "yes" ]]; then
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log "Redis (cache / sessions)"
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apt-get install -y redis-server php${PHP_VER}-redis
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systemctl enable --now redis-server
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_PHPMYADMIN" == "yes" ]]; then
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log "phpMyAdmin (IP-restricted — NOT public)"
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# Preseed so apt install is non-interactive; reconfigure web server manually.
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debconf-set-selections <<'PMA'
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phpmyadmin phpmyadmin/dbconfig-install boolean true
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phpmyadmin phpmyadmin/reconfigure-webserver multiselect apache2
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phpmyadmin phpmyadmin/mysql/admin-pass password
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phpmyadmin phpmyadmin/app-password-confirm password
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phpmyadmin phpmyadmin/mysql/app-pass password
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PMA
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apt-get install -y phpmyadmin
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# Lock down access by IP. Default localhost-only -> use SSH tunnel.
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ALLOW_BLOCK=" Require ip ${PMA_ALLOW_IPS}"
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cat > /etc/apache2/conf-available/phpmyadmin-restrict.conf <<EOF
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<Directory /usr/share/phpmyadmin>
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<RequireAny>
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${ALLOW_BLOCK}
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</RequireAny>
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</Directory>
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EOF
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a2enconf -q phpmyadmin-restrict
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systemctl reload apache2
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warn "phpMyAdmin reachable only from: ${PMA_ALLOW_IPS}"
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warn "Remote admin? SSH tunnel: ssh -L 8080:localhost:80 user@server then http://localhost:8080/phpmyadmin"
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fi
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#─────────────────────────────────────────────────────────────────────────────
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log "Firewall (UFW)"
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#─────────────────────────────────────────────────────────────────────────────
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ufw allow OpenSSH
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ufw allow 'Apache Full' # 80 + 443
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ufw --force enable
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#─────────────────────────────────────────────────────────────────────────────
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log "Fail2ban (SSH brute-force protection)"
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#─────────────────────────────────────────────────────────────────────────────
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cat > /etc/fail2ban/jail.local <<'EOF'
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[sshd]
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enabled = true
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maxretry = 5
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bantime = 1h
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findtime = 10m
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EOF
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systemctl enable --now fail2ban
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systemctl restart fail2ban
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#─────────────────────────────────────────────────────────────────────────────
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log "Unattended security upgrades"
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#─────────────────────────────────────────────────────────────────────────────
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dpkg-reconfigure -f noninteractive unattended-upgrades || true
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_CERTBOT" == "yes" ]]; then
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log "Certbot (Let's Encrypt TLS)"
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apt-get install -y certbot python3-certbot-apache
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warn "Get a cert AFTER DNS points here: certbot --apache -d ${SERVER_NAME} -m ${ADMIN_EMAIL} --agree-tos"
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_SWAP" == "yes" ]]; then
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log "Swapfile (RAM safety net)"
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# Why: when RAM fills, kernel pages cold memory to disk instead of OOM-killing
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# MySQL/Apache. Disk-slow, but stops crashes on memory spikes (small VPS).
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if swapon --show | grep -q '/swapfile'; then
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warn "Swap already active, skipping"
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else
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# Size: ~2x RAM if tiny, else = RAM, capped 4G
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if [[ $RAM_MB -le 2000 ]]; then SWAP_G=$(( (RAM_MB*2+512)/1024 ))
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elif [[ $RAM_MB -le 8000 ]]; then SWAP_G=$(( (RAM_MB+512)/1024 ))
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else SWAP_G=4; fi
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[[ $SWAP_G -lt 1 ]] && SWAP_G=1
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fallocate -l "${SWAP_G}G" /swapfile || dd if=/dev/zero of=/swapfile bs=1M count=$((SWAP_G*1024))
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chmod 600 /swapfile
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mkswap /swapfile
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swapon /swapfile
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grep -q '/swapfile' /etc/fstab || echo '/swapfile none swap sw 0 0' >> /etc/fstab
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# Less aggressive swapping — prefer RAM, swap only when needed (server tuning)
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sysctl -w vm.swappiness=10
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grep -q '^vm.swappiness' /etc/sysctl.conf || echo 'vm.swappiness=10' >> /etc/sysctl.conf
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log "Swap on: ${SWAP_G}G (swappiness=10)"
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fi
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$TUNE_PHP" == "yes" ]]; then
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log "Tune PHP — OPcache + FPM pool (sized to RAM)"
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PHP_INI_DIR="/etc/php/${PHP_VER}/fpm/conf.d"
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# OPcache: caches compiled PHP bytecode in RAM -> big speed win.
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cat > "${PHP_INI_DIR}/99-custom-opcache.ini" <<'EOF'
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; Compiled-script cache. Skips re-parsing PHP on every request.
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opcache.enable=1
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opcache.memory_consumption=128 ; MB for cached bytecode
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opcache.interned_strings_buffer=16
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opcache.max_accelerated_files=10000 ; raise if many .php files
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opcache.revalidate_freq=2 ; sec between file-change checks (prod: higher)
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opcache.fast_shutdown=1
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; General PHP sanity for web apps
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upload_max_filesize=64M
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post_max_size=64M
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memory_limit=256M
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max_execution_time=60
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EOF
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# FPM pool: how many PHP workers. Each ~30-50MB. Size to half RAM / 40MB.
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POOL="/etc/php/${PHP_VER}/fpm/pool.d/www.conf"
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MAXCHILD=$(( RAM_MB / 2 / 40 )); [[ $MAXCHILD -lt 4 ]] && MAXCHILD=4
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if [[ -f "$POOL" ]]; then
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sed -i \
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-e "s/^pm.max_children = .*/pm.max_children = ${MAXCHILD}/" \
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-e "s/^pm.start_servers = .*/pm.start_servers = $(( MAXCHILD/4>0?MAXCHILD/4:1 ))/" \
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-e "s/^pm.min_spare_servers = .*/pm.min_spare_servers = $(( MAXCHILD/4>0?MAXCHILD/4:1 ))/" \
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-e "s/^pm.max_spare_servers = .*/pm.max_spare_servers = $(( MAXCHILD/2>0?MAXCHILD/2:2 ))/" \
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"$POOL"
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log "FPM pm.max_children=${MAXCHILD}"
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fi
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systemctl restart php${PHP_VER}-fpm
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_DB_BACKUP" == "yes" ]]; then
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log "Nightly DB backup cron"
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mkdir -p /var/backups/mysql
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chmod 700 /var/backups/mysql
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# Dumps every DB to its own gzip, keeps 7 days. Root uses socket auth.
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cat > /usr/local/bin/db-backup <<'EOF'
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#!/usr/bin/env bash
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set -euo pipefail
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DEST=/var/backups/mysql
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STAMP=$(date +%F)
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for DB in $(mariadb -N -e "SHOW DATABASES" | grep -Ev '^(information_schema|performance_schema|mysql|sys)$'); do
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mariadb-dump --single-transaction --quick "$DB" | gzip > "${DEST}/${DB}-${STAMP}.sql.gz"
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done
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# Rotate: delete dumps older than 7 days
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find "$DEST" -name '*.sql.gz' -mtime +7 -delete
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EOF
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chmod 700 /usr/local/bin/db-backup
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# Run 03:15 nightly
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cat > /etc/cron.d/db-backup <<'EOF'
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15 3 * * * root /usr/local/bin/db-backup >> /var/log/db-backup.log 2>&1
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EOF
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log "Backups -> /var/backups/mysql (nightly 03:15, 7-day retention)"
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warn "Manual run: sudo db-backup"
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$INSTALL_HEALTHCHECK" == "yes" ]]; then
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log "Healthcheck command"
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cat > /usr/local/bin/healthcheck <<EOF
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#!/usr/bin/env bash
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# Quick server status. Run: sudo healthcheck
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echo "=== Services ==="
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for s in apache2 php${PHP_VER}-fpm mariadb redis-server fail2ban ufw; do
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if systemctl list-unit-files | grep -q "^\${s}"; then
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printf "%-18s %s\n" "\$s" "\$(systemctl is-active \$s 2>/dev/null)"
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fi
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done
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echo "=== Disk ==="
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df -h / | awk 'NR==2{print "root "\$5" used ("\$3"/"\$2")"}'
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echo "=== Memory ==="
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free -h | awk '/^Mem:/{print "RAM "\$3" / "\$2" used"} /^Swap:/{print "Swap "\$3" / "\$2" used"}'
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echo "=== Apache config ==="
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apache2ctl configtest 2>&1
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echo "=== Listening ports ==="
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ss -tlnp 2>/dev/null | awk 'NR>1{print \$4}' | sort -u
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EOF
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chmod 755 /usr/local/bin/healthcheck
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log "Run anytime: sudo healthcheck"
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fi
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#─────────────────────────────────────────────────────────────────────────────
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if [[ "$HARDEN_SSH" == "yes" ]]; then
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log "Harden SSH (key-only, no root login)"
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# SAFETY: only proceed if at least one SSH key exists, else you lock yourself out.
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KEYFOUND=no
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for h in /root/.ssh/authorized_keys /home/*/.ssh/authorized_keys; do
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[[ -s "$h" ]] && KEYFOUND=yes
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done
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if [[ "$KEYFOUND" != yes ]]; then
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warn "NO SSH keys found in any authorized_keys — REFUSING to disable password login."
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warn "Add your key first: ssh-copy-id user@server then re-run with HARDEN_SSH=yes"
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else
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cat > /etc/ssh/sshd_config.d/99-hardening.conf <<'EOF'
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PermitRootLogin no
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PasswordAuthentication no
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ChallengeResponseAuthentication no
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KbdInteractiveAuthentication no
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MaxAuthTries 3
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|
EOF
|
|
if sshd -t; then
|
|
systemctl reload ssh
|
|
warn "SSH now KEY-ONLY, root login disabled. Keep this session open + test new login before closing!"
|
|
else
|
|
rm -f /etc/ssh/sshd_config.d/99-hardening.conf
|
|
warn "sshd config test failed — hardening reverted, SSH untouched"
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
#─────────────────────────────────────────────────────────────────────────────
|
|
log "Done. Stack ready."
|
|
#─────────────────────────────────────────────────────────────────────────────
|
|
cat <<EOF
|
|
|
|
Web root : ${WEB_ROOT}
|
|
Test PHP : http://<server-ip>/info.php (DELETE after check: rm ${WEB_ROOT}/info.php)
|
|
Apache : $(apache2 -v | head -1 | awk '{print $3}') (event MPM + PHP-FPM)
|
|
PHP : $(php -v | head -1 | awk '{print $2}')
|
|
MariaDB : $(mariadb --version | awk '{print $5}' | tr -d ,) -> connect: sudo mariadb
|
|
$( command -v node >/dev/null && echo " Node : $(node -v)" )
|
|
$( command -v composer>/dev/null && echo " Composer : $(composer --version | awk '{print $3}')" )
|
|
$( command -v python3 >/dev/null && echo " Python : $(python3 -V | awk '{print $2}')" )
|
|
|
|
.htaccess : ENABLED (mod_rewrite + AllowOverride All)
|
|
Firewall : UFW active (22/80/443)
|
|
TLS : certbot --apache -d yourdomain.com
|
|
|
|
NEXT:
|
|
1. rm ${WEB_ROOT}/info.php
|
|
2. Point DNS to this server
|
|
3. Run certbot for HTTPS
|
|
4. Create app DB: sudo mariadb -e "CREATE DATABASE app; CREATE USER 'app'@'localhost' IDENTIFIED BY 'CHANGEME'; GRANT ALL ON app.* TO 'app'@'localhost';"
|
|
EOF
|