# MySQL 백업 스크립트 로깅 기능 개선

## 로깅 시스템 개선

### 타임스탬프 출력 기능 추가
- **ptyMysqlBackup.php**:
  - logMessage() 함수 추가로 모든 출력에 타임스탬프 자동 포함
  - 기존 echo 호출을 logMessage()로 전면 교체
  - 에러 발생 시 exit(1)로 명시적 종료 코드 반환

ptyMysqlBackup.php

 #!/usr/bin/php
 <?php
 
+// 타임스탬프를 포함한 출력 함수
+function logMessage($message) {
+    $timestamp = date('Y-m-d H:i:s');
+    echo "[$timestamp] $message";
+}
+
 // 인자 파싱 함수 (--key=value 형태만 허용)
 function parseArguments($argv) {
     $args = [];
@@ -10,8 +16,8 @@ function parseArguments($argv) {
         } elseif (preg_match('/^--([a-zA-Z]+)=(.*)$/', $argv[$i], $matches)) {
             $args[$matches[1]] = $matches[2];
         } else {
-            echo "[WARNING] Invalid argument format: {$argv[$i]}\n";
-            echo "          Use --key=value format (e.g., --host=localhost)\n\n";
+            logMessage("[WARNING] Invalid argument format: {$argv[$i]}\n");
+            logMessage("          Use --key=value format (e.g., --host=localhost)\n\n");
         }
     }
     return $args;
@@ -55,25 +61,25 @@ if (!$backupPath)    $backupPath = "/root/pty_server_backup/mysql";
 if (!$password)
 {
     // 먼저 로컬 ~/.mysql_password 체크
-    echo "[INFO] Checking local ~/.mysql_password file...\n";
+    logMessage("[INFO] Checking local ~/.mysql_password file...\n");
     $passwordFile = getenv("HOME") . "/.mysql_password";
     if (file_exists($passwordFile)) {
         $password = trim(file_get_contents($passwordFile));
-        echo "[INFO] Password loaded from local ~/.mysql_password\n";
+        logMessage("[INFO] Password loaded from local ~/.mysql_password\n");
     } else {
-        echo "[INFO] Local ~/.mysql_password not found\n";
+        logMessage("[INFO] Local ~/.mysql_password not found\n");
     }
 
     // 로컬에 없고 호스트가 localhost가 아니면 SSH로 원격 호스트에서 가져오기
     if (!$password && $host != "localhost" && $host != "127.0.0.1") {
-        echo "[INFO] Trying to get password from remote host ($host)...\n";
+        logMessage("[INFO] Trying to get password from remote host ($host)...\n");
         $sshCmd = "ssh root@$host 'cat ~/.mysql_password' 2>/dev/null";
         $remotePassword = trim(shell_exec($sshCmd));
         if ($remotePassword) {
             $password = $remotePassword;
-            echo "[INFO] Password loaded from remote host = $password\n";
+            logMessage("[INFO] Password loaded from remote host = $password\n");
         } else {
-            echo "[INFO] Remote ~/.mysql_password not found\n";
+            logMessage("[INFO] Remote ~/.mysql_password not found\n");
         }
     }
 }
@@ -105,23 +111,25 @@ if (!$password)
 
 // 백업 디렉토리 생성
 if (!is_dir($backupPath)) {
-    echo "[INFO] Creating backup directory: $backupPath\n";
+    logMessage("[INFO] Creating backup directory: $backupPath\n");
     if (!mkdir($backupPath, 0755, true)) {
-        die("[ERROR] Failed to create backup directory: $backupPath\n");
+        logMessage("[ERROR] Failed to create backup directory: $backupPath\n");
+        exit(1);
     }
 }
 
-echo "\n[INFO] Backup path: $backupPath\n";
-echo "[INFO] Connecting to MySQL server: $host as $user, password = $password\n";
+logMessage("\n[INFO] Backup path: $backupPath\n");
+logMessage("[INFO] Connecting to MySQL server: $host as $user, password = $password\n");
 
 
 $connection = mysqli_connect($host, $user, $password);
 if (!$connection) {
-    die ('[ERROR] Could not connect database.' . mysqli_error()."\n");
+    logMessage('[ERROR] Could not connect database.' . mysqli_error()."\n");
+    exit(1);
 }
-echo "[INFO] Connected successfully!\n\n";
+logMessage("[INFO] Connected successfully!\n\n");
 
-echo "[INFO] Retrieving database list...\n";
+logMessage("[INFO] Retrieving database list...\n");
 $databases = mysqli_query($connection, "SHOW databases");
 $dbCount = 0;
 $totalTables = 0;
@@ -130,21 +138,21 @@ while ($databaseInfo = mysqli_fetch_array($databases)) { // go through each row
 
     # performance_schema, information_schema 는 백업 무시
     if ($dbName == "performance_schema" || $dbName == "information_schema") {
-        echo "[SKIP] Skipping system database: $dbName\n";
+        logMessage("[SKIP] Skipping system database: $dbName\n");
         continue;
     }
 
     $dbCount++;
-    echo "\n====================================\n";
-    echo "[DB $dbCount] Processing database: $dbName\n";
-    echo "====================================\n";
+    logMessage("\n====================================\n");
+    logMessage("[DB $dbCount] Processing database: $dbName\n");
+    logMessage("====================================\n");
 
     $sql = "SHOW TABLES FROM `$dbName`";
     $result = mysqli_query($connection, $sql);
 
     if (!$result) {
-        echo "[ERROR] DB Error, could not list tables\n";
-        echo '[ERROR] MySQL Error: ' . mysqli_error($connection) . "\n";
+        logMessage("[ERROR] DB Error, could not list tables\n");
+        logMessage('[ERROR] MySQL Error: ' . mysqli_error($connection) . "\n");
         exit;
     }
 
@@ -155,18 +163,18 @@ while ($databaseInfo = mysqli_fetch_array($databases)) { // go through each row
     }
 
     $totalTablesInDb = count($tables);
-    echo "[INFO] Found $totalTablesInDb tables in $dbName\n";
+    logMessage("[INFO] Found $totalTablesInDb tables in $dbName\n");
 
     foreach ($tables as $tableName) {
         $tableCount++;
-        echo "[TABLE $tableCount/$totalTablesInDb] Backing up: $dbName.$tableName ... ";
+        logMessage("[TABLE $tableCount/$totalTablesInDb] Backing up: $dbName.$tableName ... ");
         mysql_backup($host, $user, $password, $dbName, $tableName, $backupPath);
-        echo "Done\n";
+        logMessage("Done\n");
         $totalTables++;
     }
 
     // 데이터베이스 백업 완료 후 압축
-    echo "[INFO] Compressing database backup...\n";
+    logMessage("[INFO] Compressing database backup...\n");
     $dbDir = $backupPath . "/" . $dbName;
     $tarFile = $backupPath . "/" . $dbName . ".tgz";
 
@@ -175,25 +183,25 @@ while ($databaseInfo = mysqli_fetch_array($databases)) { // go through each row
     exec($tarCmd, $tarOutput, $tarReturnCode);
 
     if ($tarReturnCode === 0) {
-        echo "[INFO] Compressed to: $tarFile\n";
+        logMessage("[INFO] Compressed to: $tarFile\n");
 
         // 압축 성공 시 원본 디렉토리 삭제
-        echo "[INFO] Removing original directory...\n";
+        logMessage("[INFO] Removing original directory...\n");
         $rmCmd = "rm -rf \"$dbDir\"";
         exec($rmCmd);
-        echo "[INFO] Original directory removed\n";
+        logMessage("[INFO] Original directory removed\n");
     } else {
-        echo "[ERROR] Failed to compress $dbName\n";
-        echo implode("\n", $tarOutput) . "\n";
+        logMessage("[ERROR] Failed to compress $dbName\n");
+        logMessage(implode("\n", $tarOutput) . "\n");
     }
 }
 
-echo "\n====================================\n";
-echo "[COMPLETE] Backup finished!\n";
-echo "[STATS] Backup path: $backupPath\n";
-echo "[STATS] Total databases: $dbCount\n";
-echo "[STATS] Total tables: $totalTables\n";
-echo "====================================\n";
+logMessage("\n====================================\n");
+logMessage("[COMPLETE] Backup finished!\n");
+logMessage("[STATS] Backup path: $backupPath\n");
+logMessage("[STATS] Total databases: $dbCount\n");
+logMessage("[STATS] Total tables: $totalTables\n");
+logMessage("====================================\n");
 
 function mysql_backup($host, $user, $password, $dbName, $tableName, $backupPath)
 {
@@ -215,8 +223,8 @@ function mysql_backup($host, $user, $password, $dbName, $tableName, $backupPath)
     exec($cmd, $output, $returnCode);
 
     if ($returnCode !== 0) {
-        echo "\n[ERROR] Failed to backup $dbName.$tableName\n";
-        echo implode("\n", $output) . "\n";
+        logMessage("\n[ERROR] Failed to backup $dbName.$tableName\n");
+        logMessage(implode("\n", $output) . "\n");
     }
 }