AnalisiServer

Generare un file server.csv:

hostname,ip
postgreslab01,192.168.1.220

Verrà usato l'ip per la connessione e il nome per il file di output nella sotto directory: output

Creare un file con lo script del collegamento ai server mediante certificati e rileva le informazioni:

vi check_server_info.sh

 #!/bin/bash
 SERVER_LIST="server.csv"
 SSH_USER="root"
 SSH_KEY="$HOME/.ssh/id_rsa"
 OUTPUT_DIR="output"
 LOG_FILE="${OUTPUT_DIR}/log.txt"
 mkdir -p "$OUTPUT_DIR"
 > "$LOG_FILE"
 exec 3< "$SERVER_LIST"
 while IFS=',' read -r name ip <&3; do
     name=$(echo "$name" | xargs)
     ip=$(echo "$ip" | xargs)
     if [[ -z "$name" || -z "$ip" || "$name" == "hostname" ]]; then
        continue
     fi
     echo "Controllo connessione a $name ($ip)..."
     ssh -i "$SSH_KEY" -o BatchMode=yes -o ConnectTimeout=5 -o StrictHostKeyChecking=no "$SSH_USER@$ip" 'exit' 2>/dev/null
     if [ $? -ne 0 ]; then
        echo "❌ Connessione fallita a $ip ($name), salto."
        echo "$name,$ip,FAILED" >> "$LOG_FILE"
        continue
     fi
     echo "✅ Connessione riuscita a $ip ($name). Raccolgo informazioni..."
     echo "$name,$ip,SUCCESS" >> "$LOG_FILE"
     OUTPUT_FILE="${OUTPUT_DIR}/${name}.txt"
     echo "=== Informazioni per $name ($ip) ===" > "$OUTPUT_FILE"
     ssh -i "$SSH_KEY" -o StrictHostKeyChecking=no "$SSH_USER@$ip" bash << 'EOF' | sed '/^$/d' >> "$OUTPUT_FILE"
 echo "--- CPU Info ---"
 lscpu | grep 'Model name'
 echo "--- RAM Totale ---"
 free -h | grep Mem
 echo "--- SWAP ---"
 free -h | grep Swap
 echo "--- Sistema Operativo ---"
 cat /etc/os-release | grep PRETTY_NAME
 echo "--- Ultima Patch Installata ---"
 if command -v rpm &>/dev/null; then
    rpm -qa --last | head -n 1
 elif command -v dpkg &>/dev/null; then
    ls -lt /var/lib/dpkg/info/ | head -n 1
 else
    echo "Gestore pacchetti non riconosciuto"
 fi
 echo "--- Ultimo Riavvio ---"
 who -b
 echo "--- Elenco Dischi ---"
 lsblk
 echo "--- Top 5 Processi per Uso CPU ---"
 ps -eo pid,comm,%cpu --sort=-%cpu | head -n 6
 echo "--- Top 5 Processi per Uso RAM ---"
 ps -eo pid,comm,%mem --sort=-%mem | head -n 6
 EOF
    echo "📄 File ${OUTPUT_FILE} creato."
 done
 exec 3<&-
 echo "📝 Log completo: $LOG_FILE"