logstash 6.3.2 filter 过滤器各种方法

input {

    file {
        path => "/data/logs/nginx_logs/access.log"
        type => "dev-chuiyi-site-landing-1"
#        codec => json
        start_position => "end"
    }
}


filter {

    grok {
        patterns_dir => "/usr/local/logstash-6.3.2/vendor/bundle/jruby/2.3.0/gems/logstash-patterns-core-4.1.2/patterns"     # 定义logtash中自定义模式目录所在的位置
        match => {
            "message" => "%{NGINX_LOGS}"
        }
        #match => [
        #    "message","%{NGINX_LOGS}",
        #    "message","%{USERHOST:userhost} %{USERNAME:username}"
        #]

        add_field => {                      # 新增name_%{remote_addr}_[0|1]字段
            "name_%{type}_0" => "hello world 0"
            "name_%{type}_1" => "hello world 1"
            "name_%{type}_2" => "hello world 2"
            "coerce_value" => "null"
        }

        remove_field => ["message"]         # 删除message字段
        remove_field => ["name_%{type}_0"]
    }

    if [request] == "HEAD / HTTP/1.0" {     # 判断request字段是否匹配，如果匹配则drop进行丢弃该条信息，不传输至es
        drop {}
    }

    geoip {
        source => "remote_addr"
        database => "/usr/local/src/GeoLite2-City_20180807/GeoLite2-City.mmdb"
        fields => ["country_name","region_code", "city_name", "ip"]
    }

    mutate {
        copy => {                           # 将原有的字段进行拷贝一份并命名
            "remote_addr" => "client_addr"
        }
        convert => {                        # 将原有的字段的值进行类型转换，可转换的类型为: integer/float/string/boolean
            "status" => "integer"
            "request_time" => "float"
        }
        split => {                          # 将原有字段的string进行split以指定的符号(分隔符)进行分隔，分隔后变为一组数组
            "remote_addr" => "."
        }
        join => {                           # 将原有字段的array进行join以指定的的符号(分隔符)进行合并，合并后变为一串字符串
            "remote_addr" => "-"
        }
        update => {                         # 用于替换原有字段的值，如果原有字段不存在，则不执行任何操作，原有字段不支持使用%{}变量，但值可以调用%{}变量
            "upstream_response_time" => "%{remote_addr}"
        }
        replace => {                        # 用于替换原有字段的值，如果原有字段不存在，则新增一个字段，新增的字段不支持使用%{}变量，但值可以调用%{}变量
            "new_replace" => "%{remote_addr}"
        }
        gsub => [                           # 用于替换原有字段的值，第一个元素为字段名，第二个为正则或匹配的字符串，第三个为要替换的值(只支持字符串替换操作)
            "time_local", "\d{2}/[A-Za-z]{3}/[\d:]+", "this is time",
            "request", "HTTP", "http"
        ]
        rename => {                         # 将字段http_referer重命名为http_source
            "http_referer" => "http_source"
        }
    }

}

output {
    redis {
        host => "10.168.216.1"
        port => "6379"
        key => "redis_auth"
        data_type => "list"
        password => "2RMYFdlZNSSsqKYi"
    }
}

---

关于grok nginx正则
cat /usr/local/logstash-6.3.2/vendor/bundle/jruby/2.3.0/gems/logstash-patterns-core-4.1.2/patterns

REMOTE_ADDR              ^([\d\.]+)
TIME_LOCAL               [^\s]+\s\+\d{4}
REQUEST                  [A-Z]+\s.*\sHTTP/\d\.\d
STATUS                   \d{3}
BODY_BYTES_SENT          \d+
HTTP_REFERER             [^\|]*
HTTP_USER_AGENT          [^\|]*
HTTP_X_FORWARDED_FOR     [\d.]+|-
UPSTREAM_ADDR            [^\|]*
UPSTREAM_STATUS          [\d]{3}|-
REQUEST_TIME             [0-9]*\.[0-9]+
UPSTREAM_RESPONSE_TIME   ([0-9]*\.[0-9]+|-)$

NGINX_LOGS %{REMOTE_ADDR:remote_addr}\|%{TIME_LOCAL:time_local}\|%{REQUEST:request}\|%{STATUS:status}\|%{BODY_BYTES_SENT:body_bytes_sent}\|%{HTTP_REFERER:http_referer}\|%{HTTP_USER_AGENT:http_user_agent}\|%{HTTP_X_FORWARDED_FOR:http_x_forwarded_for}\|%{UPSTREAM_ADDR:upstream_addr}\|%{UPSTREAM_STATUS:upstream_status}\|%{REQUEST_TIME:request_time}\|%{UPSTREAM_RESPONSE_TIME:upstream_response_time}

USERHOST [\d\.]+
USERNAME [a-zA-Z]+

---

关于nginx日志格式

log_format  main    '$remote_addr|$time_local|$request|'
                    '$status|$body_bytes_sent|$http_referer|'
                    '$http_user_agent|$http_x_forwarded_for|'
                    '$upstream_addr|$upstream_status|$request_time|$upstream_response_time';