Example of how to import nginx logs into elasticsearch

log_format main '$remote_addr $http_x_forwarded_for [$time_local] $server_name $request ' 
            '$status $body_bytes_sent $http_referer ' 
            '"$http_user_agent" '
            '"$connection" '
            '"$http_cookie" '
            '$request_time'
            '$upstream_response_time';

tar -zxvf filebeat-6.2.4-linux-x86_64.tar.gz -C /usr/local
cd /usr/local;ln -s filebeat-6.2.4-linux-x86_64 filebeat
cd /usr/local/filebeat

./filebeat modules enable nginx

./filebeat modules list

vim /usr/local/filebeat/blog_module_logstash.yml
filebeat.modules:
- module: nginx
 access:
  enabled: true
  var.paths: ["/home/weblog/blog.cnfol.com_access.log"]
 #error:
 # enabled: true
 # var.paths: ["/home/weblogerr/blog.cnfol.com_error.log"]


output.logstash:
 hosts: ["192.168.15.91:5044"]

./filebeat -c blog_module_logstash.yml -e

tar -zxvf logstash-6.2.4.tar.gz /usr/local
cd /usr/local;ln -s logstash-6.2.4 logstash
Create a pipline file for nginx log cd /usr/local/logstash

vendor/bundle/jruby/2.3.0/gems/logstash-patterns-core-4.1.2/patterns

FORWORD (?:%{IPV4}[,]?[ ]?)+|%{WORD}

#input {
# stdin {}
#}
# Accept data input from filebeat {
 beats {
 port => 5044
 host => "0.0.0.0"
 }
}

filter {
 # Add a debugging switch mutate{add_field => {"[@metadata][debug]"=>true}}
 grok {
 # Filter nginx log #match => { "message" => "%{NGINXACCESS_TEST2}" }
 #match => { "message" => '%{IPORHOST:clientip} # (?<http_x_forwarded_for>[^\#]*) # \[%{HTTPDATE:[@metadata][webtime]}\] # %{NOTSPACE:hostname} # %{WORD:verb} %{URIPATHPARAM:request} HTTP/%{NUMBER:httpversion} # %{NUMBER:response} # (?:%{NUMBER:bytes}|-) # (?:"(?:%{NOTSPACE:referrer}|-)"|%{NOTSPACE:referrer}|-) # (?:"(?<http_user_agent>[^#]*)") # (?:"(?:%{NUMBER:connection}|-)"|%{NUMBER:connection}|-) # (?:"(?<cookies>[^#]*)") # %{NUMBER:request_time:float} # (?:%{NUMBER:upstream_response_time:float}|-)' }
 #match => { "message" => '(?:%{IPORHOST:clientip}|-) (?:%{TWO_IP:http_x_forwarded_for}|%{IPV4:http_x_forwarded_for}|-) \[%{HTTPDATE:[@metadata][webtime]}\] (?:%{HOSTNAME:hostname}|-) %{WORD:method} %{URIPATHPARAM:request} HTTP/%{NUMBER:httpversion} %{NUMBER:response} (?:%{NUMBER:bytes}|-) (?:"(?:%{NOTSPACE:referrer}|-)"|%{NOTSPACE:referrer}|-) %{QS:agent} (?:"(?:%{NUMBER:connection}|-)"|%{NUMBER:connection}|-) (?:"(?<cookies>[^#]*)") %{NUMBER:request_time:float} (?:%{NUMBER:upstream_response_time:float}|-)' }
    match => { "message" => '(?:%{IPORHOST:clientip}|-) %{FORWORD:http_x_forwarded_for} \[%{HTTPDATE:[@metadata][webtime]}\] (?:%{HOSTNAME:hostname}|-) %{WORD:method} %{URIPATHPARAM:request} HTTP/%{NUMBER:httpversion} %{NUMBER:response} (?:%{NUMBER:bytes}|-) (?:"(?:%{NOTSPACE:referrer}|-)"|%{NOTSPACE:referrer}|-) %{QS:agent} (?:"(?:%{NUMBER:connection}|-)"|%{NUMBER:connection}|-) %{QS:cookie} %{NUMBER:request_time:float} (?:%{NUMBER:upstream_response_time:float}|-)' }
 }
 # Assign the default @timestamp (the time when beats collects logs) value to the new field @read_tiimestamp
 ruby { 
 #code => "event.set('@read_timestamp',event.get('@timestamp'))"
 #Change the time zone to East 8 code => "event.set('@read_timestamp',event.get('@timestamp').time.localtime + 8*60*60)"
 }
 # Format the nginx log record time # Format time 20/May/2015:21:05:56 +0000
 date {
 locale => "en"
 match => ["[@metadata][webtime]","dd/MMM/yyyy:HH:mm:ss Z"]
 }
 # Convert the bytes field from a string to a number mutate {
 convert => {"bytes" => "integer"}
 }
 # Parse the cookie field into a json
 #mutate {
 # gsub => ["cookies",'\;',',']
 #} 
 # If CDN acceleration is used, there will be multiple IP addresses for http_x_forwarded_for. The first IP address is the user's real IP address.
 if[http_x_forwarded_for] =~ ", "{
     ruby {
         code => 'event.set("http_x_forwarded_for", event.get("http_x_forwarded_for").split(",")[0])'
        }
    }
 # Parse the IP address and obtain the geographical location of the IP address geoip {
 source => "http_x_forwarded_for"
 # # Get only the latitude and longitude, country, city, and time zone fields of the IP => ["location","country_name","city_name","region_name"] 
 }
 # Parse the agent field to obtain specific information such as browser and system version useragent {
 source => "agent"
 target => "useragent"
 }
 #Specify the data to be deleted#mutate{remove_field=>["message"]}
 # Set the index name prefix according to the log name ruby ​​{
 code => 'event.set("@[metadata][index_pre]",event.get("source").split("/")[-1])'
 } 
 # Format @timestamp to 2019.04.23
 ruby {
 code => 'event.set("@[metadata][index_day]",event.get("@timestamp").time.localtime.strftime("%Y.%m.%d"))'
 }
 # Set the default index name for output mutate {
 add_field => {
  #"[@metadata][index]" => "%{@[metadata][index_pre]}_%{+YYYY.MM.dd}"
  "[@metadata][index]" => "%{@[metadata][index_pre]}_%{@[metadata][index_day]}"
 }
 }
 # Parse the cookies field into json
# mutate {
# gsub => [
# "cookies", ";", ",",
# "cookies", "=", ":"
# ]
# #split => {"cookies" => ","}
# }
# json_encode {
# source => "cookies"
# target => "cookies_json"
# }
# mutate {
# gsub => [
# "cookies_json", ',', '","',
# "cookies_json", ':', '":"'
# ]
# }
# json {
# source => "cookies_json"
# target => "cookies2"
# }
 # If there is an error in grok parsing, write the error to a separate index if "_grokparsefailure" in [tags] {
 #if "_dateparsefailure" in [tags] {
 mutate {
  replace => {
  #"[@metadata][index]" => "%{@[metadata][index_pre]}_failure_%{+YYYY.MM.dd}"
  "[@metadata][index]" => "%{@[metadata][index_pre]}_failure_%{@[metadata][index_day]}"
  }
 }
 # If there is no error, delete the message
 }else{
 mutate{remove_field=>["message"]}
 }
}

output {
 if [@metadata][debug]{
 # Output to rubydebuyg and output metadata
 stdout{codec => rubydebug{metadata => true}}
 }else{
 # Convert the output content to "."
 stdout{codec => dots} 
 # Output to the specified es
 elasticsearch
  hosts => ["192.168.15.160:9200"]
  index => "%{[@metadata][index]}"
  document_type => "doc"
 } 
 }
}

nohup bin/logstash -f test_pipline2.conf &