该脚本作用用于查询日志过去一分钟内的并发量，并发单位位1分钟，结果打印在标准输出中，可以配合一些软件实现日志的并发实时监控，比如zabbix。
#! /usr/local/bin/python3import sysimport reimport datetimeimport osdef generate_previous_minutes(): format='%d/%b/%Y:%H:%M' return (datetime.datetime.today()-datetime.timedelta(minutes=1)).strftime(format)def check_logs(log_path,examine_minutes): regex_minutes=re.compile(examine_minutes) minutes_count=0 step=10*1024*1024 with open(log_path,encoding='Latin-1') as file: line=file.readline() while line: time_line=line.split(' ')[3][1:] if time_line>=examine_minutes: file.seek(file.tell()-step) file.readline() break file.seek(file.tell()+step) if file.tell()>=os.path.getsize(log_path): file.seek(file.tell()-step) file.readline() break file.readline() line=file.readline().strip() for line in file: line=line.strip() words=line.split(' ') if(regex_minutes.search(words[3])): minutes_count+=1 print(minutes_count)def main(log_path): previous_minutes=generate_previous_minutes() print(previous_minutes) check_logs(log_path,previous_minutes)if __name__ == '__main__': log_path=sys.argv[1] main(log_path)