172 lines
4.9 KiB
Bash
Executable File
172 lines
4.9 KiB
Bash
Executable File
#!/bin/bash
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# 日志分析器 - 从日志文件中提取和分析信息
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set -e
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LOG_FILE="${1:-}"
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PATTERN="${2:-}"
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LEVEL="${3:-INFO}"
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DATE_RANGE="${4:-}"
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# 颜色输出
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# 帮助信息
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usage() {
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echo "📝 日志分析器"
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echo ""
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echo "使用: $0 <日志文件> [模式] [级别] [日期范围]"
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echo ""
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echo "参数:"
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echo " 日志文件 日志文件路径 (必需)"
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echo " 模式 要搜索的正则表达式 (可选)"
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echo " 级别 日志级别: ERROR/WARN/INFO/DEBUG (默认: INFO)"
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echo " 日期范围 日期范围, 如: 2025-11-01~2025-11-14 (可选)"
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echo ""
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echo "示例:"
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echo " $0 /var/log/app.log"
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echo " $0 /var/log/app.log 'timeout|error' ERROR"
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echo " $0 /var/log/app.log 'database' WARN 2025-11-01~2025-11-07"
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echo ""
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}
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# 检查参数
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if [ -z "$LOG_FILE" ]; then
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echo "❌ 错误: 请提供日志文件路径"
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usage
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exit 1
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fi
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if [ ! -f "$LOG_FILE" ]; then
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echo "❌ 错误: 文件不存在: $LOG_FILE"
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exit 1
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fi
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echo "📝 日志分析器"
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echo "=========================================="
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echo "文件: ${BLUE}$LOG_FILE${NC}"
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echo "大小: $(du -h "$LOG_FILE" | cut -f1)"
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echo "行数: $(wc -l < "$LOG_FILE")"
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echo "=========================================="
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# 按级别过滤
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echo ""
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echo "📊 按级别统计:"
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echo "=========================================="
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ERROR_COUNT=$(grep -c "ERROR" "$LOG_FILE" 2>/dev/null || echo "0")
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WARN_COUNT=$(grep -c "WARN" "$LOG_FILE" 2>/dev/null || echo "0")
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INFO_COUNT=$(grep -c "INFO" "$LOG_FILE" 2>/dev/null || echo "0")
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DEBUG_COUNT=$(grep -c "DEBUG" "$LOG_FILE" 2>/dev/null || echo "0")
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echo -e " ${RED}ERROR${NC}: $ERROR_COUNT"
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echo -e " ${YELLOW}WARN${NC}: $WARN_COUNT"
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echo -e " ${GREEN}INFO${NC}: $INFO_COUNT"
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echo -e " ${BLUE}DEBUG${NC}: $DEBUG_COUNT"
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# 展示特定级别的日志
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echo ""
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echo "=========================================="
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echo "📋 ${LEVEL} 级别日志 (前10条):"
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echo "=========================================="
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grep "$LEVEL" "$LOG_FILE" | head -10
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# 模式匹配
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if [ -n "$PATTERN" ]; then
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echo ""
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echo "=========================================="
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echo "🔍 匹配模式 '${PATTERN}':"
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echo "=========================================="
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MATCH_COUNT=$(grep -c "$PATTERN" "$LOG_FILE" 2>/dev/null || echo "0")
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echo "匹配数量: $MATCH_COUNT"
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echo ""
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echo "示例:"
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grep "$PATTERN" "$LOG_FILE" | head -5
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fi
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# 时间范围
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check_date_range() {
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if [ -n "$DATE_RANGE" ]; then
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START_DATE=$(echo "$DATE_RANGE" | cut -d'~' -f1)
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END_DATE=$(echo "$DATE_RANGE" | cut -d'~' -f2)
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echo ""
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echo "=========================================="
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echo "📅 时间范围 $START_DATE ~ $END_DATE:"
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echo "=========================================="
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# 简单的日期过滤（假设日志包含日期)
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awk -v start="$START_DATE" -v end="$END_DATE" '
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$0 >= start && $0 <= end {
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print $0
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}' "$LOG_FILE" | head -10
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fi
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}
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check_date_range
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# 常见错误模式分析
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echo ""
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echo "=========================================="
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echo "⚠️ 常见错误模式分析:"
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echo "=========================================="
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# 超时错误
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TIMEOUT_COUNT=$(grep -c "timeout\|Timeout\|TIMEOUT" "$LOG_FILE" 2>/dev/null || echo "0")
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if [ "$TIMEOUT_COUNT" -gt 0 ]; then
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echo -e "⏱️ 超时错误: ${RED}$TIMEOUT_COUNT${NC}次"
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fi
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# 连接错误
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CONN_ERROR_COUNT=$(grep -c "connection refused\|Connection refused\|ECONNREFUSED" "$LOG_FILE" 2>/dev/null || echo "0")
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if [ "$CONN_ERROR_COUNT" -gt 0 ]; then
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echo -e "🔗 连接错误: ${RED}$CONN_ERROR_COUNT${NC}次"
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fi
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# 内存错误
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MEMORY_ERROR_COUNT=$(grep -c "OutOfMemory\|memory\|Memory" "$LOG_FILE" 2>/dev/null || echo "0")
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if [ "$MEMORY_ERROR_COUNT" -gt 0 ]; then
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echo -e "🧠 内存问题: ${RED}$MEMORY_ERROR_COUNT${NC}次"
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fi
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# 总结
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echo ""
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echo "=========================================="
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echo "📊 统计总结:"
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echo "=========================================="
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echo "总错误数: $((ERROR_COUNT + WARN_COUNT))"
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echo "关键错误数: $ERROR_COUNT"
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if [ -n "$PATTERN" ]; then
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echo "模式'$PATTERN'匹配: $MATCH_COUNT 次"
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fi
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echo ""
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echo "=========================================="
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echo "💡 建议:"
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echo "=========================================="
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if [ "$ERROR_COUNT" -gt 10 ]; then
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echo " - ⚠️ ERROR数量较多，建议立即调查"
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fi
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if [ "$TIMEOUT_COUNT" -gt 5 ]; then
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echo " - ⚠️ 频繁超时，检查网络或服务响应"
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fi
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if [ "$CONN_ERROR_COUNT" -gt 3 ]; then
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echo " - ⚠️ 连接问题，验证服务状态和配置"
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fi
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if [ "$ERROR_COUNT" -le 5 ] && [ "$WARN_COUNT" -le 10 ]; then
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echo " - ✅ 日志健康状况良好"
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fi
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echo ""
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echo "=========================================="
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echo "日志分析完成"
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echo "=========================================="
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