在Kibana中,我有一个包含问号`?`公制字段中不显示

? . 目标是创建一个过滤器,排除字段中包含问号的所有条目。所以,当我试图在聚合下创建一个度量时 Term 那些 ? 这里看不到标记,请帮助新手理解。。

下面是 logstash.conf

# cat logstash-syslog.conf
input {
  file {
    path => [ "/scratch/rsyslog/*/messages.log" ]
    type => "syslog"
  }
  file {
    path => [ "/scratch/rsyslog/Aug/messages.log" ]
    type => "apic_logs"
  }
}

filter {
  if [type] == "syslog" {
    grok {
      match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp } %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
      add_field => [ "received_at", "%{@timestamp}" ]
      remove_field => ["@version", "host", "message", "_type", "_index", "_score", "path"]
    }
    syslog_pri { }
    date {
      match => [ "syslog_timestamp", "MMM  d HH:mm:ss", "MMM dd HH:mm:ss" ]
 }
}
  if [type] == "apic_logs" {
    grok {
      match => { "message" => "%{CISCOTIMESTAMP:syslog_timestamp} %{CISCOTIMESTAMP} %{SYSLOGHOST:syslog_hostname} (?<prog>[\w._/%-]+) %{SYSLOG5424SD:f1}%{SYSLOG5424SD:f2}%{SYSLOG5424SD:f3}%{SYSLOG5424SD:f4}%{SYSLOG5424SD:f5} %{GREEDYDATA:syslog_message}" }
      add_field => [ "received_at", "%{@timestamp}" ]
      remove_field => ["@version", "host", "message", "_type", "_index", "_score", "path"]
   }
 }
}
output {
        if [type] == "syslog" {
        elasticsearch {
                hosts => "noida-elk:9200"
                manage_template => false
                index => "syslog-%{+YYYY.MM.dd}"
                document_type => "messages"
  }
 }
}

output {
        if [type] == "apic_logs" {
        elasticsearch {
                hosts => "noida-elk:9200"
                manage_template => false
                index => "apic_logs-%{+YYYY.MM.dd}"
                document_type => "messages"
  }
 }
}