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http {
    log_format mylog '$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"';
    access_log /var/log/nginx/access.log mylog;
}

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grep£ºÓÃÓÚÔÚÎı¾ÖÐËÑË÷Ö¸¶¨µÄ×Ö·û´® £¬¿ÉÒÔÓÃÀ´¹ýÂ˳öÖª×ãÌض¨Ìõ¼þµÄÈÕÖ¾¼Í¼¡£

# ¹ýÂ˳ö°üÀ¨Òªº¦×Ö¡°404¡±µÄÈÕÖ¾¼Í¼
$ grep "404" /var/log/nginx/access.log

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awk£ºÓÃÓÚ¶ÔÎı¾¾ÙÐÐÖ§½â¡¢¹ýÂ˺ʹ¦Àí £¬¿ÉÒÔÓÃÀ´ÌáÈ¡ÈÕÖ¾¼Í¼ÖеÄÌض¨×ֶΡ£

# ÌáÈ¡³ö»á¼ûIPºÍÏìӦ״̬ÂëµÄ×Ö¶Î
$ awk '{print $1" "$9}' /var/log/nginx/access.log

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sed£ºÓÃÓÚ¶ÔÎı¾¾ÙÐÐÌæ»»¡¢É¾³ýºÍ²åÈë²Ù×÷ £¬¿ÉÒÔÓÃÀ´ÐÞËûÈÕÖ¾¼Í¼µÄÃûÌá£

# ½«ÈÕÖ¾ÖеÄIPµØµãÌ滻Ϊ¡°x.x.x.x¡±
$ sed 's/[0-9]+.[0-9]+.[0-9]+.[0-9]+/x.x.x.x/' /var/log/nginx/access.log

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Èý¡¢Ê¹ÓÃELK Stack¾ÙÐÐNginxÈÕÖ¾ÆÊÎöºÍ¼à¿Ø

ELK StackÊÇÒ»Ì׿ªÔ´µÄÈÕÖ¾ÖÎÀí¹¤¾ß £¬ÓÉElasticsearch¡¢LogstashºÍKibana×é³É¡£ÏÂÃ潫ÏÈÈÝÔõÑùʹÓÃELK Stack¶ÔNginxÈÕÖ¾¾ÙÐÐÆÊÎöºÍ¼à¿Ø¡£

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LogstashÊÇÒ»¸öÓÃÓÚÈÕÖ¾ÍøÂç¡¢´¦ÀíºÍת·¢µÄ¹¤¾ß¡£ÎÒÃÇÐèÒªÉèÖÃLogstashÒÔÎüÊÕNginxÈÕÖ¾ £¬²¢½«Æä·¢Ë͵½Elasticsearch¾ÙÐд洢ºÍË÷Òý¡£ÏÂÃæÊÇÒ»¸ö¼òÆÓµÄLogstashÉèÖÃʾÀý£º

input {  
 file {  
     path => "/var/log/nginx/access.log"  
     start_position => "beginning"
 }
}

filter {
 grok {
     match => { "message" => "%{IPORHOST:clientip} - %{DATA:user_ident} [%{HTTPDATE:timestamp}] "%{WORD:method} %{URIPATHPARAM:request} HTTP/%{NUMBER:http_version}" %{NUMBER:status} %{NUMBER:bytes_sent} "%{DATA:http_referer}" "%{DATA:http_user_agent}"" }
 }
}

output {  
 elasticsearch {  
     hosts => ["localhost:9200"]  
     index => "nginx-access-%{+YYYY.MM.dd}"  
 }
}

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