I am using Logstash to parse a log file. A sample log line is shown below.
2011/08/10 09:51:34.450457,1.048908,tcp,213.200.244.217,47908, ->,147.32.84.59,6881,S_RA,0,0,4,244,124,flow=Background-Established-cmpgw-CVUT
I am using following filter in my confguration file.
grok {
match => ["message","%{DATESTAMP:timestamp},%{BASE16FLOAT:value},%{WORD:protocol},%{IP:ip},%{NUMBER:port},%{GREEDYDATA:direction},%{IP:ip2},%{NUMBER:port2},%{WORD:status},%{NUMBER:port3},%{NUMBER:port4},%{NUMBER:port5},%{NUMBER:port6},%{NUMBER:port7},%{WORD:flow}" ]
}
It works well for error-free log lines. But when I have a line like below, it fails. Note that the second field is missing.
2011/08/10 09:51:34.450457,,tcp,213.200.244.217,47908, ->,147.32.84.59,6881,S_RA,0,0,4,244,124,flow=Background-Established-cmpgw-CVUT
I want to put a default value in there in my output Json object, if a value is missing. how can I do that?
Use (%{BASE16FLOAT:value})? for second field to make it optional - ie. regex ()? .
Even if the second field is null the grok will work.
So entire grok look like this:
%{DATESTAMP:timestamp},(%{BASE16FLOAT:value})?,%{WORD:protocol},%{IP:ip},%{NUMBER:port},%{GREEDYDATA:direction},%{IP:ip2},%{NUMBER:port2},%{WORD:status},%{NUMBER:port3},%{NUMBER:port4},%{NUMBER:port5},%{NUMBER:port6},%{NUMBER:port7},%{WORD:flow}
Use it in your conf file. Now, if value field is empty it will omit it in response.
input {
stdin{
}
}
filter {
grok {
match => ["message","%{DATESTAMP:timestamp},%{DATA:value},%{WORD:protocol},%{IP:ip},%{NUMBER:port},%{GREEDYDATA:direction},%{IP:ip2},%{NUMBER:port2},%{WORD:status},%{NUMBER:port3},%{NUMBER:port4},%{NUMBER:port5},%{NUMBER:port6},%{NUMBER:port7},%{WORD:flow}" ]
}
}
output {
stdout {
codec => rubydebug
}
}
Related
My message looks like this
[Metric][methodName: someName][methodParams: [ClassName{field1="val1", field2="val2", field3="val3"}, ClassName{field1="val1", field2="val2", field3="val3"}, ClassName{field1="val1", field2="val2", field3="val3"}]]
Is there a way to separate this log in more smaller ones and filter them separately?
If the first option isn't possible, how can I parse to get all elements of the array?
(?<nameOfClass>[A-Za-z]+)\{field1='%{DATA:textfield1}',\sfield2='%{DATA:textfield2}',\sfield3='%{DATA:textfield3}'\}
Since everything after methodParams: looks to be JSON you could use a JSON filter to parse it. Something like:
filter{
# Parse your JSON out here using GROK to a field called myjson
grok {
match => {
"message" => "methodParams: %{GREEDYDATA:myjson}"
}
}
#
json{
source => "myjson"
}
}
I'm using Filebeat to forward logs into Logstash.
I have filenames that contain "v2" in them, for an example:
C:\logs\Engine\v2.latest.log
I'd like to perform a different grok on these files.
I tried both of the following:
filter{
if "v2" in [filename] {
grok {
.....
.....
}
}
}
OR
filter{
if [filename] =~ /v2/ {
grok {
.....
.....
}
}
}
Well, my issue was that the "Filename" field was being generated AFTER the filter. So my syntax was correct but it simply was not catching anything because it didnt exist. However, Starting from version 6.7 they've added a "log.file.path" field which is the "Filename" field I previously generated.
I send json-formatted logs to my Logstash server. The log looks something like this (Note: The whole message is really on ONE line, but I show it in multi-line to ease reading)
2016-09-01T21:07:30.152Z 153.65.199.92
{
"type":"trm-system",
"host":"susralcent09",
"timestamp":"2016-09-01T17:17:35.018470-04:00",
"#version":"1",
"customer":"cf_cim",
"role":"app_server",
"sourcefile":"/usr/share/tomcat/dist/logs/trm-system.log",
"message":"some message"
}
What do I need to put in my Logstash configuration to get the "sourcefile" value, and ultimately get the filename, e.g., trm-system.log?
If you pump the hash field (w/o the timestamp) into ES it should recognize it.
If you want to do it inside a logstash pipeline you would use the json filter and point the source => to the second part of the line (possibly adding the timestamp prefix back in).
This results in all fields added to the current message, and you can access them directly or all combined:
Config:
input { stdin { } }
filter {
# split line in Timestamp and Json
grok { match => [ message , "%{NOTSPACE:ts} %{NOTSPACE:ip} %{GREEDYDATA:js}"] }
# parse json part (called "js") and add new field from above
json { source => "js" }
}
output {
# stdout { codec => rubydebug }
# you access fields directly with %{fieldname}:
stdout { codec => line { format => "sourcefile: %{sourcefile}"} }
}
Sample run
2016-09-01T21:07:30.152Z 153.65.199.92 { "sourcefile":"/usr" }
sourcefile: /usr
and with rubydebug (host and #timestamp removed):
{
"message" => "2016-09-01T21:07:30.152Z 153.65.199.92 { \"sourcefile\":\"/usr\" }",
"#version" => "1",
"ts" => "2016-09-01T21:07:30.152Z",
"ip" => "153.65.199.92",
"js" => "{ \"sourcefile\":\"/usr\" }",
"sourcefile" => "/usr"
}
As you can see, the field sourcefile is directly known with the value in the rubydebug output.
Depending on the source of your log records you might need to use the multiline codec as well. You might also want to delete the js field, rename the #timestamp to _parsedate and parse ts into the records timestamp (for Kibana to be happy). This is not shown in the sample. I would also remove message to save space.
I currently have a file name like this.
[SERIALNUMBER][2014_12_04][00_45_22][141204T014214]AB_DEF.log
i basically want to extract the year from the file (2014) and add it to the index name in logstash conf file.logstash.conf
Below is my conf file.
input {
file {
path => "C:/ABC/DEF/HJK/LOGS/**/*"
start_position => beginning
type => syslog
}
}
filter {
grok {
match => { "message" => "%{COMBINEDAPACHELOG}"}
}
}
output {
elasticsearch {
index => "type1logs"
}
stdout {}
}
Please help.
thanks
IIRC, you get a field called 'path'. You can then run another grok{} filter, using 'path' as input and extracting the data you want.
Based on your use of COMBINEDAPACHELOG in your existing config, your log entries already have the date. It's a more common practice to use this timestamp field in the date{} filter to change the #timestamp field. Then, the default elasticsearch{} output config will create an index called "logstash-YYYY.MM.DD".
Having daily indexes like this (usually) makes data retention easier.
Would someone be able to add some clarity please? My grok pattern works fine when I test it against grokdebug and grokconstructor, but then I put it in Logastash it fails from the beginning. Any guidance would be greatly appreciated. Below is my filter and example log entry.
{"casename":"null","username":"null","startdate":"2015-05-26T01:09:23Z","enddate":"2015-05-26T01:09:23Z","time":"0.0156249","methodname":"null","url":"http://null.domain.com/null.php/null/jobs/_search?q=jobid:\"0\"&size=100&from=0","errortype":"null","errorinfo":"null","postdata":"null","methodtype":"null","servername":"null","gaggleid":"a51b90d6-1f82-46a7-adb9-9648def879c5","date":"2015-05-26T01:09:23Z","firstname":"null","lastname":"null"}
filter {
if [type] == 'EventLog' {
grok {
match => { 'message' => ' \{"casename":"%{WORD:casename}","username":"%{WORD:username}","startdate":"%{TIMESTAMP_ISO8601:startdate}","enddate":"%{TIMESTAMP_ISO8601:enddate}","time":"%{NUMBER:time}","methodname":"%{WORD:methodname}","url":"%{GREEDYDATA:url}","errortype":"%{WORD:errortype}","errorinfo":"%{WORD:errorinfo}","postdata":"%{GREEDYDATA:postdata}","methodtype":"%{WORD:methodtype}","servername":"%{HOST:servername}","gaggleid":"%{GREEDYDATA:gaggleid}","date":"%{TIMESTAMP_ISO8601:date}","firstname":"%{WORD:firstname}","lastname":"%{WORD:lastname}"\} '
}
}
}
}
"Fails from the beginning", indeed! See this?
'message' => ' \{"casename"
^^^
There's no initial (or trailing) space in your input, but you have them in your pattern. Remove them, and it works fine in logstash.
BTW, have you seen the json codec or filter?