I am trying to write a grok to analysis my logs.
Use logstash 7 to collect logs. But I failed writing grok after many attempts.
Log looks like this:
[2018-09-17 18:53:43] - biz_util.py [Line:55] - [ERROR]-[thread:14836]-[process:9504] - an integer is required
My Grok(fake):
%{TIMESTAMP_ISO8601 :log_time} - %{USERNAME:module}[Line:%{NUMBER:line_no}] - [%{WORD:level}]-[thread:%{NUMBER:thread_no}]-[process:%{NUMBER:process_no}] - %{GREEDYDATA:log}
Only the timestamp part is OK. The others failed.
that will work:
\[%{TIMESTAMP_ISO8601:log_time}\] - %{DATA:module} \[Line:%{NUMBER:line_no}\] - \[%{WORD:level}\]-\[thread:%{NUMBER:thread_no}\]-\[process:%{NUMBER:process_no}\] - %{GREEDYDATA:log}
you need to escap [
This will work,
[%{TIMESTAMP_ISO8601:log_time}] %{NOTSPACE} %{USERNAME:module} [Line:%{BASE10NUM:Line}] %{NOTSPACE} [%{LOGLEVEL}]%{NOTSPACE}[thread:%{BASE10NUM:thread}]%{NOTSPACE}[process:%{BASE10NUM:process}]
Related
Basically I was setting up an Elasticsearch-Logstash-Kibana (elk) stack for monitoring syslogs. Now I have to write the grok pattern for logstash.
Here's an example of my log:
May 8 15:14:50 tileserver systemd[25780]: Startup finished in 29ms.
And that's my pattern (yet):
%{SYSLOGTIMESTAMP:zeit} %{HOSTNAME:host} %{SYSLOGPROG:program}
Usually I'm also using %{DATA:text} for the message but it just works on the link below.
I'm using Test grok patterns to test my patterns and these 3 work fine but there's the colon (from after PID) in front of the message and I don't want it to be there.
How do I get rid of it?
try this:
%{SYSLOGTIMESTAMP:zeit} %{HOSTNAME:host} %{GREEDYDATA:syslog_process}(:) %{GREEDYDATA:message}
I am pretty new to Grok and I need to filter a line as the one below:
Dec 20 18:46:00 server-04 script_program.sh[14086]: 2017-12-20 18:46:00 068611 +0100 - server-04.location-2 - 14086/0x00007f093b7fe700 - processname/SIMServer - 00000000173d9b6b - info - work: You have 2 connections running
So far I just managed to get the following:
SYSLOGBASE %{SYSLOGTIMESTAMP:timestamp} (?:%{SYSLOGFACILITY} )?%{SYSLOGHOST:logsource} %{SYSLOGPROG}:
So I get all the date/timestamp details + program + process which is ok.
But that leaves me with the following remaining string:
2017-12-20 18:46:00 068611 +0100 - server-04.location-2 - 14086/0x00007f093b7fe700 - processname/SIMServer - 00000000173d9b6b - info - work: You have 2 connections running
And here I am struggling to break everything into chunks.
I have tried lot of combinations trying to split that based on the hyphen (-) but I am failing so far to do so..
So far I have been pretty much using as a guideline the following:
https://github.com/logstash-plugins/logstash-patterns-core/blob/master/patterns/grok-patterns
Any help/suggestions/tips on this please?
I am using graylog2 and as shown above, trying to use GROK for filtering my messages out..
Many thanks
I managed to get my filter fully done and working. so the solution is below:
SERVER_TIMESTAMP_ISO8601 %{YEAR}-%{MONTHNUM}-%{MONTHDAY}[T ]%{HOUR}:?%
{MINUTE}(?::?%{SECOND})?[T ]%{INT}[T ]%{ISO8601_TIMEZONE}?
SERVER_HOSTNAME \b(?:[0-9A-Za-z][0-9A-Za-z-]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z-]{0,62}))*(\.?|\b)
SERVER_Unknown %{SERVER_HOSTNAME}[/]%{SERVER_HOSTNAME}
SERVER_Loglevel ([Aa]lert|ALERT|[Tt]race|TRACE|[Dd]ebug|DEBUG|[Nn]otice|NOTICE|[Ii]nfo|INFO|[Ww]arn?(?:ing)?|WARN?(?:ING)?|[Ee]rr?(?:or)?|ERR?(?:OR)?|[Cc]rit?(?:ical)?|CRIT?(?:ICAL)?|[Ff]atal|FATAL|[Ss]evere|SEVERE|EMERG(?:ENCY)?|[Ee]merg(?:ency)?)
SYSLOGBASE_SERVER %{SYSLOGTIMESTAMP:timestamp} (?:%{SYSLOGFACILITY} )?%{SYSLOGHOST:logsource} %{SYSLOGPROG}:[T ]%{SERVER_TIMESTAMP_ISO8601: timestamp_match}[T ]-[T ]%{SERVER_HOSTNAME:SERVER_host_node}[T ]-[T ]%{SERVER_Unknown:SERVER_Unknown}[T ]-[T ]%{SERVER_Unknown:service_component}[T ]-[T ]%{SERVER_HOSTNAME:process_code_id}[T ]-[T ]%{SERVER_Loglevel}[T ]-[T ]%{GREEDYDATA:syslog_message}
All the rest or regular expresions from GROK.
Many thanks
Can anyone give the logstash grok pattern for below lines. I want to take only timestamp alone.
[2017-08-19T12:47:43,822][INFO][logstash.agent] Successfully started Logstash API endpoint {:port=>9600}
[2017-08-19T12:49:47,213][WARN][logstash.agent] stopping pipeline {:id=>"main"}
I'm not sure to understand what you want but here are two possible solutions:
[%{GREEDYDATA:date1}][%{LOGLEVEL:debugLevel}][%{USERNAME:agentName}] %{GREEDYDATA:message} [%{TIMESTAMP_ISO8601:date2}][%{LOGLEVEL:debugLevel2}][%{USERNAME:agentName2}] %{GREEDYDATA:message}
This grok pattern will extract all information that you have in your log, then you decide if you want to use date1 or date2 field
%{GREEDYDATA:trash}[%{TIMESTAMP_ISO8601:date}]%{GREEDYDATA:trash}
This one will only return the second date of your log
Hope it helped !
If you only need the timestamp, this should do:
\[%{TIMESTAMP_ISO8601:date}\]
Results for your two loglines on https://grokconstructor.appspot.com:
If you want to match the whole pattern something like this may fit your needs:
\[%{TIMESTAMP_ISO8601:date}\]\[%{LOGLEVEL:loglevel}\]\[%{GREEDYDATA:agent}\] %{GREEDYDATA:message}
Results:
For some reason filebeat is not sending the correct logs while using the multiline filter in the filebeat.yml file. The log file im reading has some multiline logs, and some single lines. However, they all follow the same format by starting with a date. For an example, here is a couple lines:
2017-Aug-23 10:33:43: OutputFile: This is a sample message
2017-Aug-23 10:34:23: MainClass: Starting connection:
http.InputProcess: 0
http.OutPutProcess: 1
2017-Aug-23 10:35:21: OutputFile: This is a sample message 2
My Filebeat yml is:
- input_type: log
paths:
- /home/user/logfile.log
document_type: chatapp
multiline:
pattern: "^%{YYYY-MMM-dd HH:mm:ss}"
negate: true
match: before
For some reason when i see the filebeat logs hit elasticsearch, all of the logs will be aggragated into one log line, so it does not seem to be actually reading the file date by date. Can Anyone help? Thanks!
Use
pattern: "^%{YEAR}-%{MONTH}-%{MONTHDAY}"
The pattern you are currently using there is not a validly defined regex given the grok patterns.
You can test multiline patterns using the grokconstructor. I constructed this pattern from the grok-patterns predefined in logstash.
We are in the process of capturing the logstash
2016-01-07 13:12:36,718 82745269 [http-nio-10180-exec-609] 8ca2b394-f435-4376-9a16-8be44ad437b9 - entry:"dummy-AS-1.1"
we are having logs like this,We want how to match the messages .Once matched we want to remove 82745269 and [http-nio-10180-exec-609].Pls help
How do you match them? With the grok filter.
How do you make a grok pattern? Slowly, using the debugger.
Maybe an introduction would help.