日志格式：
log_format elk "$http_clientip | $http_x_forwarded_for | $time_local | $request | $status | $body_bytes_sent | "
                  " $request_body | $content_length | $http_referer | $http_user_agent | "
                  "$http_cookie | $remote_addr | $hostname | $upstream_addr | $upstream_response_time | $request_time";
日志实例：
36.110.211.42 | 10.10.130.101 | 23/Jun/2017:17:51:01 +0800 | GET /lvyou/dongjing/ HTTP/1.1 | 200 | 73181 | - | 0 | - | Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36 | JSESSION_O2O=0000F0jMLw1MnT6SFCvhcqW3oP9:19h7oe5dr; SessionID=10.10.130.101.1498210484146456; sCityCode=SZX; sCityName=%E6%B7%B1%E5%9C%B3; vac_ss_sid=4441002; vac_ss_uid=4441 | 10.10.130.100 | www1-n01 | 10.10.130.237:80 | 0.808 | 0.809
logstash实例：
input {  
        file {  
                type => "www1_access"  
                path => ["/usr/local/elk/elklog/nginxlog/log0/www1.log","/usr/local/elk/elklog/nginxlog/log1/www1.log"]  
        }
        file {
                type => "flight1_access"
                path => ["/usr/local/elk/elklog/nginxlog/log0/flight1.log","/usr/local/elk/elklog/nginxlog/log1/flight1.log"]
        }
        file {
                type => "m_access"
                path => ["/usr/local/elk/elklog/nginxlog/log0/m.log"]
        }
}  
filter {
ruby {
init => "@kname = ['http_clientip','http_x_forwarded_for','time_local','request','status','body_bytes_sent','request_body','content_length','http_referer','http_user_agent','http_cookie','remote_addr','hostname','upstream_addr','upstream_response_time','request_time']"
code => "new_event = LogStash::Event.new(Hash[@kname.zip(event.get('message').split(' | '))])
new_event.remove('@timestamp')
event.append(new_event)"
}
if [request] {
ruby {
init => "@kname = ['method','uri','verb']"
code => "new_event = LogStash::Event.new(Hash[@kname.zip(event.get('request').split(' '))])
new_event.remove('@timestamp')
event.append(new_event)
"
}
if [uri] {
ruby {
init => "@kname = ['url_path','url_args']"
code => "new_event = LogStash::Event.new(Hash[@kname.zip(event.get('uri').split('?'))])
new_event.remove('@timestamp')
event.append(new_event)
"
}
kv {
prefix => "url_"
source => "url_args"
field_split => "& "
remove_field => [ "url_args","uri","request" ]
}
}
}
mutate {
convert => ["body_bytes_sent" , "integer", "content_length", "integer", "upstream_response_time", "float","request_time", "float"]
}
        grok {
              match => [ 
"message", "%{IP:clientip} \| %{USER} \| %{HTTPDATE:timestamp}"
 ]
}
date {
match => [ "timestamp", "dd/MMM/YYYY:HH:mm:ss Z" ]
locale => "en"
}
        geoip 
{
        source => "clientip"
        }
mutate {    
                remove_field => "timestamp"      
                remove_field => "http_clientip"      
}
useragent {
    source => "http_user_agent"
    target => "useragent"
  } 
}
output {
        redis {  
                host => "10.10.45.200"  
                data_type => "list"  
                key => "elk_frontend_access:redis"  
                port=>"5379"  
        }  
}
注意：分隔符为“空格+table+空格”