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tools/sys_log.sh

+#!/usr/bin/bash
+
+# 带大小限制的日志复制函数
+copy_log_with_limit() {
+    local src=$1
+    local dest=$2
+    local size_limit_mb=$3
+    
+    if [ -f "$src" ]; then
+        file_size=$(du -m "$src" | cut -f1)
+        if [ $file_size -gt $size_limit_mb ]; then
+            log "跳过大文件: $src (${file_size}MB > ${size_limit_mb}MB)"
+            echo "[日志文件超过大小限制未采集]" > "$dest"
+            return
+        fi
+        cp "$src" "$dest" 2>/dev/null || echo "无权限读取日志" > "$dest"
+    else
+        echo "日志文件不存在" > "$dest"
+    fi
+}
+
+
+# 收集系统日志
+collect_logs() {
+    log "收集系统日志(最近${LOG_AGE}小时)..."
+    
+    # 识别系统日志位置
+    local syslog_path
+    [ -f /var/log/syslog ] && syslog_path=/var/log/syslog
+    [ -f /var/log/messages ] && syslog_path=/var/log/messages
+
+    if [ -n "$syslog_path" ]; then
+        copy_log_with_limit "$syslog_path" "$OUTPUT_DIR/system.log" $LOG_SIZE_LIMIT
+    else
+        log "收集journalctl日志..."
+        journalctl --since "${LOG_AGE} hours ago" > "$OUTPUT_DIR/system.log" 2>/dev/null || \
+        echo "无法获取系统日志" > "$OUTPUT_DIR/system.log"
+    fi
+
+    log "收集dmesg日志..."
+    dmesg -T > "$OUTPUT_DIR/dmesg.log" 2>&1
+}
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