Code example of obtaining MySQL error log information through grep

#!/usr/bin/env python2.7 #-*- encoding: utf-8 -*- """ 该模块用于提取每天mysql日志中的异常或错误信息 author: xiaomo email: moxiaomomo@gmail.com """ import os import sys import string from datetime import * # 預設字符解碼器為utf-8 reload(sys) sys.setdefaultencoding('utf-8') COMMON_FLAGS = ["error", "exception", "fail", "crash", "repair"] def _contain_flag(cur_str): for flag in COMMON_FLAGS: if flag in string.lower(cur_str): return True return False """ 获取当前mysql实例的error_log文件路径 """ def _get_mysql_error_log_path(): log_path = '' grep_infos = os.popen('ps aux | grep mysql | grep "log-error"').read() if len(grep_infos) > 1: grep_infos = grep_infos.split("log-error=") if len(grep_infos) > 1: grep_infos = grep_infos[1].split(' ') if len(grep_infos) > 1: log_path = grep_infos[0] return log_path """ 读取mysql错误日志中包含异常或错误信息的行 """ def _get_error_info(error_log, begin_date): error_infos = [] f = open(error_log, 'r') lines = f.readlines() for line in lines: data_array = line.split(' ') if len(data_array) > 0 and len(data_array[0]) == 10: dt_strs = data_array[0].split('-') cur_date = date(int(dt_strs[0]), int(dt_strs[1]), int(dt_strs[2])) if cur_date >= begin_date and _contain_flag(line): error_infos.append(line) f.close() return error_infos """ 组装并返回mysql错误日志信息 """ def get_mysql_errors(begin_date=date.today()-timedelta(1)): try: err_log_path = _get_mysql_error_log_path() if len(err_log_path) > 1: return _get_error_info(err_log_path, begin_date) except Exception,e: print "[get_mysql_errors]%s"%e return []