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Ê×ÏÈ£¬ÎÒÃÇÐèÒªÍøÂçϵͳÈÕÖ¾¡£ÔÚLinuxÇéÐÎÏ£¬ÈÕÖ¾Ò»Ñùƽ³£´æ´¢ÔÚ/var/logĿ¼Ï¡£³£¼ûµÄϵͳÈÕÖ¾Îļþ°üÀ¨£º

/var/log/auth.log£º¼ÍÈÎÃü»§ÈÏÖ¤Ïà¹ØÐÅÏ¢¡£

/var/log/syslog£º¼Í¼ϵͳÔËÐÐ״̬ºÍ¹ýʧÐÅÏ¢¡£

/var/log/messages£º¼Í¼ϵͳ¸÷¸ö×é¼þµÄÐÅÏ¢ºÍ¹ýʧ¡£

/var/log/secure£º¼Í¼Çå¾²Ïà¹ØµÄÐÅÏ¢¡£

/var/log/nginx/access.log£º¼Í¼NginxЧÀÍÆ÷»á¼ûÈÕÖ¾¡£

ΪÁËÀû±ãÈÕÖ¾ÆÊÎö£¬ÎÒÃÇ¿ÉÒÔʹÓù¤¾ßÈçsyslog-ng»òrsyslogÀ´¼¯ÖÐÖÎÀíÈÕÖ¾Îļþ¡£

½ÓÏÂÀ´£¬ÎÒÃÇʹÓÃPython±àд´úÂëÀ´ÆÊÎöÈÕÖ¾¡£ÏÂÃæÊÇÒ»¸öʾÀý´úÂ룬ÓÃÓÚͳ¼Æ/var/log/syslogÖи÷¼¶±ðÈÕÖ¾µÄÊýÄ¿£º

import re

log_file = '/var/log/syslog'
log_level_count = {}

with open(log_file, 'r') as f:
    for line in f:
        result = re.findall(r'(w+):s', line)
        if result:
            log_level = result[0]
            if log_level in log_level_count:
                log_level_count[log_level] += 1
            else:
                log_level_count[log_level] = 1

for log_level, count in log_level_count.items():
    print(log_level, count)

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³ýÁËͳ¼ÆÈÕÖ¾ÊýÄ¿£¬ÎÒÃÇ»¹¿ÉÒÔ̫ͨ¹ýÎöÈÕÖ¾ÄÚÈÝÀ´¼ì²âDZÔÚµÄÇå¾²Íþв¡£ÀýÈ磬ÎÒÃÇ¿ÉÒÔ±àд´úÂëÀ´²éÕÒ¾ßÓÐDZÔÚΣº¦µÄÒªº¦×Ö¡£ÏÂÃæÊÇÒ»¸öʾÀý´úÂ룬ÓÃÓÚÔÚ/var/log/auth.logÖвéÕÒ°üÀ¨Òªº¦×Ö”Failed”µÄÐУº

log_file = '/var/log/auth.log'
key_word = 'Failed'

with open(log_file, 'r') as f:
    for line in f:
        if key_word in line:
            print(line)

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±ðµÄ£¬ÎÒÃÇ»¹¿ÉÒÔʹÓÃÇ¿Ê¢µÄÈÕÖ¾ÆÊÎö¹¤¾ßÈçELK£¨Elasticsearch, Logstash, Kibana£©À´½øÒ»²½Ìá¸ßÈÕÖ¾ÆÊÎöµÄЧÂʺÍ׼ȷÐÔ¡£ELKÊÇÒ»¸öÊ¢ÐеÄÈÕÖ¾ÆÊÎöƽ̨£¬¾ßÓÐÇ¿Ê¢µÄÊý¾Ý´¦Öóͷ£ºÍ¿ÉÊÓ»¯¹¦Ð§¡£Ê¹ÓÃELK£¬ÎÒÃÇ¿ÉÒÔ½«ÈÕÖ¾Êý¾Ýµ¼ÈëElasticsearchÖУ¬È»ºóʹÓÃKibana¾ÙÐÐÊý¾ÝÆÊÎöºÍ¿ÉÊÓ»¯¡£

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