I am very new to Logstash and ELK in general.
I need to write a grok pattern for a log file in the following format :
[191114|16:51:13.577|BPDM|MDS|2|209|ERROR|39999]Interrupted by a signal!!!
I tried to write a grok pattern by referring grok-patterns and by trying out my implementation in grok-debugger, but it didn't work.
grok {
match => { "message" => "%{NONNEGINT:fixed}|%{HOSTNAME:host}|%{WORD:word1}|%{WORD:word2}|%{NONNEGINT:num1}|%{NONNEGINT:num2}|%{ERROR|INFO|EVENT}|%{NONNEGINT:num1}|%{GREEDYDATA:message}" }
}
You need to escape the brackets and the pipes, and your second field is not a host, it is a time.
This one works, just validate the field names.
\[%{NONNEGINT:fixed}\|%{DATA:time}\|%{WORD:word1}\|%{WORD:word2}\|%{NONNEGINT:num1}\|%{NONNEGINT:num2}\|%{WORD:loglevel}\|%{NONNEGINT:num3}\]%{GREEDYDATA:message}
This grok will parse your message like this.
{
"word1": "BPDM",
"word2": "MDS",
"message": "Interrupted by a signal!!!",
"loglevel": "ERROR",
"num1": "2",
"fixed": "191114",
"time": "16:51:13.577",
"num3": "39999",
"num2": "209"
}
Related
I have defined my pattern in the patterns file and reading them from my logstash module as the below block
grok {
patterns_dir => "../patterns/cisco-ftd"
match => [ "message", "%{CISCOFW302013_302014_302015_302016}",
"message", "%{CISCOFW302020_302021}",
"message", "%{CISCOFTD607001}"
]
tag_on_failure => [ "_grokparsefailure" ]
}
While the first two patterns get recognized, the third one CISCOFTD607001 doesn't get recognized and the output log gives the below error.
exception=>#<Grok::PatternError: pattern %{CISCOFTD607001} not defined>
I'm guessing there is something wrong with my parser but sure.
Here is the message and the corresponding parser
Here is my pattern %FTD-%{POSINT:[event][severity]}-%{POSINT:[syslog][id]}: %{DATA}:%{IP:[source][ip]}/%{NUMBER:[source][port]} to %{DATA}:%{IP:[destination][ip]} %{GREEDYDATA}
Answering my question.
It worked well when I changed patterns_dir => "../patterns/cisco-ftd" to absolute path.
I am facing issue while using the Grok filter. Below is my filter which is working as expected while the class name do not have $ in it. When thread name is like PropertiesReader$ it is failing. What else can I use so it can parse class name with special characters ?
filter {
grok {
match => [ "message", "%{TIMESTAMP_ISO8601:LogDate} %{LOGLEVEL:loglevel} %{WORD:threadName}:%{NUMBER:ThreadID} - %{GREEDYDATA:Line}" ]
}
json {
source => "Line"
}
mutate {
remove_field => [ "Line" ]
}
}
You aren't limited to grok pattern names. You can do any regex. For example in place of %{WORD:threadName} you can put (?<threadName>[^:]+) which says to match any character that isn't a : and assign it to threadName.
You are using WORD as a pattern for your threadname which does not contain special characters. To confirm this let's take a look at this pattern: WORD \b\w+\b
Use a custom pattern. Just descibe it in a file like this:
MYPATTERN ([A-z]+\$?)
Then you can use it in your config like this:
grok {
patterns_dir => ["/path/to/pattern/dor"]
match => [ "message", "%{TIMESTAMP_ISO8601:LogDate} %LOGLEVEL:loglevel} %{MYPATTERN:threadName}:%{NUMBER:ThreadID} - %GREEDYDATA:Line}" ]
}
You'll find more information about custom patterns in the docs
You could also try with %{DATA:threadName} instead of %{WORD:threadName}, if your threadName won't contain whitespaces or colons.
I have a grok match like this:
grok{ match => [ “message”, “Duration: %{NUMBER:duration}”, “Speed: %{NUMBER:speed}” ] }
I also want to add another field to captured variables if it matches a grok pattern. I know I can use mutate plugin and if-else to add new fields but I have too many matches and it will be too long that way. As an example, I want to capture right-side fields for given texts.
"Duration: 12" => [duration: "12", type: "duration_type"]
"Speed: 12" => [speed: "12", type: "speed_type"]
Is there a way to do this?
I am not 100% sure if that is what you need, but I did something similar. I have a basic parsing for my message, and then I analyse a specific field additionally with optional matches.
grok {
break_on_match => false
patterns_dir => "/etc/logstash/conf.d/patterns"
match => {
"message" => "\[%{LOGLEVEL:level}\] \[%{IPORHOST:from}\] %{TIMESTAMP_ISO8601:timestamp} \[%{DATA:thread}\] \[%{NOTSPACE:logger}\] %{GREEDYDATA:msg}"
"thread" => "(%{GREEDYDATA}%{REQUEST_TYPE:reqType}%{SPACE}%{URIPATH:reqPath}(%{URIPARAM:reqParam})?)?"
}
}
As you can see, the first one simply matches the complete message. I have a field thread, that is basically the Logger information. However, in my setup, http requests append some info to the thread name. In these cases, I want to OPTIONALLY match these as well.
Wit the above setup, the fields reqType, reqPath, reqParam are only created, if thread can match them. Otherwise they aren't.
I hope this is what you wanted.
Thanks,
Artur
Something like this?
filter{
grok { match => [ "message", "%{GREEDYDATA:types}: %{NUMBER:value}" ] }
mutate {
lowercase => [ "types" ]
add_field => { "%{types}" => "%{value}"
"type" => "%{types}_type" }
remove_field => [ "value", "types" ]
}
}
Im working on writing a logstash grok filter for syslog messages coming from my Synology box. An example message looks like this.
Jun 3 09:39:29 diskstation Connection user:\tUser [user] logged in from [192.168.1.121] via [DSM].
Im having a hard time filtering out the weirdly formatted timestamp. Could anyone give me a helping hand here? This is what I have so far.
if [type] == "syslog" and [message] =~ "diskstation" {
grok {
match => [ "message", "%{HOSTNAME:hostname} %{WORD:program} %{GREEDYDATA:syslog_message}" ]
}
}
As you can probably tell I havent dealt with the timestamp yet at all. Some help would be appreciated.
The following config can help you to parse the log.
grok {
match => [ "message", "%{SYSLOGTIMESTAMP:date} %{HOSTNAME:hostname} %{WORD:program} %{GREEDYDATA:syslog_message}" ]
}
You can try your log and pattern at here and refer all the provided pattern at here.
I'm using Logstash + Elasticsearch + Kibana to have an overview of my Tomcat log files.
For each log entry I need to know the name of the file from which it came. I'd like to add it as a field. Is there a way to do it?
I've googled a little and I've only found this SO question, but the answer is no longer up-to-date.
So far the only solution I see is to specify separate configuration for each possible file name with different "add_field" like so:
input {
file {
type => "catalinalog"
path => [ "/path/to/my/files/catalina**" ]
add_field => { "server" => "prod1" }
}
}
But then I need to reconfigure logstash each time there is a new possible file name.
Any better ideas?
Hi I added a grok filter to do just this. I only wanted to have the filename not the path, but you can change this to your needs.
filter {
grok {
match => ["path","%{GREEDYDATA}/%{GREEDYDATA:filename}\.log"]
}
}
In case you would like to combine the message and file name in one event:
filter {
grok {
match => {
message => "ERROR (?<function>[\S]*)"
}
}
grok {
match => {
path => "%{GREEDYDATA}/%{GREEDYDATA:filename}\.log"
}
}}
The result in ElasticSearch (focus on 'filename' and 'function' fields):
"_index": "logstash-2016.08.03",
"_type": "logs",
"_id": "AVZRyEI49-A6kyBCq6Yt",
"_score": 1,
"_source": {
"message": "27/07/16 12:16:18,321 ERROR blaaaaaaaaa.internal.com",
"#version": "1",
"#timestamp": "2016-08-03T19:01:33.083Z",
"path": "/home/admin/mylog.log",
"host": "my-virtual-machine",
"function": "blaaaaaaaaa.internal.com",
"filename": "mylog"
}