215 lines
4.9 KiB
Bash
215 lines
4.9 KiB
Bash
#!/bin/bash
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# Oprește execuția imediat dacă apare orice eroare
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set -e
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# ============================
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# VARIABILE GLOBALE
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# ============================
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# Directorul unde va fi instalat agentul
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INSTALL_DIR="/opt/server-monitor"
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# Scriptul agentului care va rula periodic
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AGENT="$INSTALL_DIR/monitor-agent.sh"
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# Fișierul de configurare (permisiuni restrictive)
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CONFIG="$INSTALL_DIR/config.env"
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# Comanda rulată din cron (fără output)
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CRON_CMD="$AGENT >/dev/null 2>&1"
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# Endpoint API unde se trimit datele
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API_URL="https://itschool.pbcv.dev/api/report.php"
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# ============================
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# VERIFICARE PERMISIUNI ROOT
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# ============================
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# Scriptul trebuie rulat ca root (cron, /opt, system info)
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# $EUID global variable
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if [[ $EUID != 0 ]]; then
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echo "Run as root (sudo)"
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exit 1
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fi
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echo "Installing Server Monitor Agent (IPv4 only)..."
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# ============================
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# CREARE DIRECTOR DE INSTALARE
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# ============================
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# Creează directorul dacă nu există
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mkdir -p "$INSTALL_DIR"
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# Permisiuni standard pentru directoare de sistem
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chmod 755 "$INSTALL_DIR"
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# ============================
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# FIȘIER CONFIGURARE
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# ============================
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# Stocăm variabilele configurabile separat
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# (bun pentru securitate și extensibilitate)
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cat > "$CONFIG" <<EOF
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API_URL="$API_URL"
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EOF
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# Permisiuni restrictive (doar root poate citi)
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chmod 600 "$CONFIG"
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# ============================
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# SCRIPT AGENT (RULEAZĂ DIN CRON)
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# ============================
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cat > "$AGENT" <<'EOF'
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#!/bin/bash
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set -e
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# Importă configurația
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source /opt/server-monitor/config.env
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# Numele mașinii
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HOSTNAME=$(hostname)
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# ============================
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# CPU
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# ============================
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# Load average (1 minut)
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CPU_LOAD=$(uptime | awk -F'load average:' '{print $2}' | cut -d',' -f1 | xargs)
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# Număr de core-uri CPU
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CPU_CORES=$(nproc)
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# ============================
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# MEMORIE RAM / SWAP (MB)
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# ============================
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# RAM total și utilizat
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RAM_TOTAL=$(free -m | awk '/Mem:/ {print $2}')
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RAM_USED=$(free -m | awk '/Mem:/ {print $3}')
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# SWAP total și utilizat
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SWAP_TOTAL=$(free -m | awk '/Swap:/ {print $2}')
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SWAP_USED=$(free -m | awk '/Swap:/ {print $3}')
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# ============================
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# DISK (KB, partiția /)
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# ============================
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DISK_TOTAL=$(df -k / | awk 'NR==2 {print $2}')
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DISK_USED=$(df -k / | awk 'NR==2 {print $3}')
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# ============================
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# NETWORK IPv4 ONLY
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# ============================
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# Detectează interfața activă IPv4
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IFACE=$(ip -4 route get 1.1.1.1 2>/dev/null | awk '{print $5; exit}')
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# Trafic RX / TX (bytes)
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RX_BYTES=$(cat /sys/class/net/$IFACE/statistics/rx_bytes)
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TX_BYTES=$(cat /sys/class/net/$IFACE/statistics/tx_bytes)
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# ============================
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# PROCESE
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# ============================
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# Număr total de procese
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PROC_TOTAL=$(ps ax --no-headers | wc -l)
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# Procese zombie (Z)
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PROC_ZOMBIE=$(ps axo stat | grep -c Z || true)
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# ============================
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# SYSTEMD SERVICES
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# ============================
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# Servicii systemd eșuate
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FAILED_SERVICES=$(systemctl --failed --no-legend 2>/dev/null | wc -l)
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# ============================
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# PORTURI DESCHISE (IPv4)
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# ============================
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# Porturi ascultate TCP/UDP IPv4
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OPEN_PORTS=$(ss -4 -lntu | tail -n +2 | wc -l)
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# ============================
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# OS / KERNEL / ARHITECTURĂ
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# ============================
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# Nume OS (fallback dacă lsb_release nu există)
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OS_NAME=$(lsb_release -ds 2>/dev/null || grep PRETTY_NAME /etc/os-release | cut -d= -f2 | tr -d '"')
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KERNEL=$(uname -r)
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ARCH=$(uname -m)
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# ============================
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# UPTIME
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# ============================
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UPTIME=$(uptime -p)
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# ============================
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# TRIMITERE DATE CĂTRE API
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# FORȚAT IPv4 (-4)
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# ============================
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curl -4 -s -X POST "$API_URL" \
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-H "Content-Type: application/json" \
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-d "{
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\"hostname\": \"$HOSTNAME\",
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\"cpu\": \"$CPU_LOAD\",
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\"cpu_cores\": $CPU_CORES,
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\"ram_used\": $RAM_USED,
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\"ram_total\": $RAM_TOTAL,
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\"swap_used\": $SWAP_USED,
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\"swap_total\": $SWAP_TOTAL,
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\"disk_used\": $DISK_USED,
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\"disk_total\": $DISK_TOTAL,
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\"rx_bytes\": $RX_BYTES,
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\"tx_bytes\": $TX_BYTES,
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\"processes\": $PROC_TOTAL,
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\"zombies\": $PROC_ZOMBIE,
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\"failed_services\": $FAILED_SERVICES,
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\"open_ports\": $OPEN_PORTS,
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\"os\": \"$OS_NAME\",
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\"kernel\": \"$KERNEL\",
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\"arch\": \"$ARCH\",
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\"uptime\": \"$UPTIME\"
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}"
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EOF
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# Permite execuția agentului
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chmod +x "$AGENT"
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# ============================
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# CRON JOB (FĂRĂ DUBLURI)
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# ============================
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(
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# Păstrează ce există deja, elimină dublurile
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crontab -l 2>/dev/null | grep -v "$AGENT" || true
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# Rulează agentul la fiecare minut
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echo "* * * * * $CRON_CMD"
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) | crontab -
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# ============================
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# FINAL
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# ============================
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echo "Server Monitor installed successfully (IPv4 only)"
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echo "Reporting to: $API_URL"
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echo "Interval: every 1 minute"
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echo "Manual test: $AGENT"
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