Grok Pattern for Airflow Logs - logstash

I am trying to get a grok pattern on my log message. This is what it looks like:
[2022-09-23 18:17:01,765] {taskinstance.py:1396} INFO - Marking task as SUCCESS. dag_id=HelloWorld, task_id=pythonOperator, execution_date=20220921T181659, start_date=20220921T181701, end_date=20220921T181701
The output file that I want should look like this:
{
timeStamp = 2022-09-23 18:17:01,765
thread = taskinstance.py:1396
info = INFO - Marking task as SUCCESS
dag_id = dag_id=HelloWorld
task_id=pythonOperator
execution_date=20220921T181659
start_date=20220921T181701
end_date=20220921T181701
}
I am currently using grok in my logstash configuration, but I am not sure if what I need is dissect. Any idea what grok pattern would work for this log?
Logstash conf
input {
beats {
port => 5044
}
}
filter {
grok {
match => { "message" => "%{TIMESTAMP_ISO8601:timestamp}\"%{GREEDYDATA:message}\" %{GREEDYDATA:dag_id} %{GREEDYDATA:task_id} \"%{GREEDYDATA:execution_date}\" %{GREEDYDATA:start_date} \"%{GREEDYDATA:end_date}\" }
}
}
output {
elasticsearch {
hosts => ["${ELK}:9200"]
index =>"logs-%{+YYYY.MM.dd}"
}
}

Related

supporting different kind of logs with Logstash

I'm trying to collect logs using Logstash where I have different kinds of logs in the same file.
I want to extract certain fields if they exist in the log, and otherwise do something else.
input{
file {
path => ["/home/ubuntu/XXX/XXX/results/**/log_file.txt"]
start_position => "beginning"
}
}
filter {
grok{
match => { "message" => ["%{WORD:logger} %{SPACE}\-%{SPACE} %{LOGLEVEL:level} %{SPACE}\-%{SPACE} %{DATA:message} %{NUMBER:score:float}",
"%{WORD:logger} %{SPACE}\-%{SPACE} %{LOGLEVEL:level} %{SPACE}\-%{SPACE} %{DATA:message}"]}
}
}
output{
elasticsearch {
hosts => ["X.X.X.X:9200"]
}
stdout { codec => rubydebug }
}
for example, log type 1 is:
root - INFO - Best score yet: 35.732
and type 2 is:
root - INFO - Starting an experiment
One of the problems I face is that when a message doesn't contain a number, the field still exists as null in the JSON created which prevents me from using desired functionalities in Kibana.
One option, is just to add a tag on logstash when field is not defined to be able to have a way to filter easily on kibana side. The null value is only set during the insertion in elasticsearch (on logstash side, the field is not defined)
This solution looks like this in you case :
filter {
grok{
match => { "message" => ["%{WORD:logger} %{SPACE}\-%{SPACE} %{LOGLEVEL:level} %{SPACE}\-%{SPACE} %{DATA:message} %{NUMBER:score:float}",
"%{WORD:logger} %{SPACE}\-%{SPACE} %{LOGLEVEL:level} %{SPACE}\-%{SPACE} %{DATA:message}"]}
}
if ![score] {
mutate { add_tag => [ "score_not_set" ] }
}
}

Filebeat Input Fields are not sent to Logstash

StackOverflow community!
I am trying to collect some system logs using Filebeat and then further process them with LogStash before viewing them in Kibana.
Now, as I have different logs location, I am trying to add specific identification fields for each of them within filebeat.yml.
- type: log
enabled: true
paths:
- C:\Users\theod\Desktop\Logs\Test2\*
processors:
- add_fields:
target: ''
fields:
name:"drs"
- type: log
enabled: true
paths:
- C:\Users\theod\Desktop\Logs\Test\*
processors:
- add_fields:
target: ''
fields:
name:"pos"
Depending on that, I am trying to apply some Grok filters in the Logstash conf file:
input {
beats {
port => 5044
}
}
filter
{
if "pos" in [fields][name] {
grok {
match => { "message" => "\[%{LOGLEVEL:LogLevel}(?: ?)] %{TIMESTAMP_ISO8601:TimeStamp} \[%{GREEDYDATA:IP_Address}] \[%{GREEDYDATA:Username}] %{GREEDYDATA:Operation}] \[%{GREEDYDATA:API_RequestLink}] \[%{GREEDYDATA:Account_name_and_Code}] \[%{GREEDYDATA:Additional_Info1}] \[%{GREEDYDATA:Additional_Info2}] \[%{GREEDYDATA:Store}] \[%{GREEDYDATA:Additional_Info3}](?: ?)%{GREEDYDATA:Error}" }
}
}
if "drs" in [fields][name] {
grok {
match => { "message" => "%{TIMESTAMP_ISO8601:TimeStamp} \[%{DATA:Thread}] %{LOGLEVEL:LogLevel} (?: ?)%{INT:Sequence} %{DATA:Request_Header}] %{GREEDYDATA:Request}" }
}
}
}
output
{
if "pos" in [fields][name] {
elasticsearch {
hosts => ["localhost:9200"]
index => "[fields][name]logs-%{+YYYY.MM.dd}"
}
}
else if "pos" in [fields][name] {
elasticsearch {
hosts => ["localhost:9200"]
index => "[fields][name]logs-%{+YYYY.MM.dd}"
}
} else {
elasticsearch {
hosts => ["localhost:9200"]
index => "logs-%{+YYYY.MM.dd}"
}
}
}
Now, every time I'm running this, the conditionals in the Logstash conf are ignored. Checking the Filebeat logs, I'm noticing that no fields are sent to Logstash.
Can someone offer some guidance and perhaps point out what am I doing wrong?
Thank you!
Your Filebeat config is not adding the field [fields][name], it is adding the field [name] in the top-level of your document because of your target configuration.
processors:
- add_fields:
target: ''
fields:
name:"pos"
All your conditional test the field [fields][name], which does not exist.
Change your conditionals to test the [name] field.
if "pos" in [name] {
... your filters ...
}

Filebeat cant send data to logstash

I have problem to send data from *.log file to logstash. This is filebeat configuration:
filebeat.prospectors:
- type: log
enabled: true
paths:
- /home/centos/logs/*.log
filebeat.config.modules:
path: ${path.config}/modules.d/*.yml
reload.enabled: false
setup.template.settings:
index.number_of_shards: 3
setup.kibana:
output.logstash:
hosts: "10.206.81.234:5044"
This is logstash configuration:
path.data: /var/lib/logstash
path.config: /etc/logstash/conf.d/*.conf
path.logs: /var/log/logstash
xpack.monitoring.elasticsearch.url: ["10.206.81.236:9200", "10.206.81.242:9200", "10.206.81.243:9200"]
xpack.monitoring.elasticsearch.username: logstash_system
xpack.monitoring.elasticsearch.password: logstash
queue.type: persisted
queue.checkpoint.writes: 10
And this is my pipeline in /etc/logstash/conf.d/test.conf
input {
beats {
port => "5044"
}
file{
path => "/home/centos/logs/mylogs.log"
tags => "mylog"
}
file{
path => "/home/centos/logs/syslog.log"
tags => "syslog"
}
}
filter {
}
output {
if [tag] == "mylog" {
elasticsearch {
hosts => [ "10.206.81.246:9200", "10.206.81.236:9200", "10.206.81.243:9200" ]
user => "Test"
password => "123456"
index => "mylog-%{+YYYY.MM.dd}"
}
}
if [tag] == "syslog" {
elasticsearch {
hosts => [ "10.206.81.246:9200", "10.206.81.236:9200", "10.206.81.243:9200" ]
user => "Test"
password => "123456"
index => "syslog-%{+YYYY.MM.dd}"
}
}
}
I tried to have two separate outputs for mylog and syslog. At first, it works like this: everything was passed to mylog-%{+YYYY.MM.dd} index even files from syslog. So I tried change second if statement to else if. It did not work so I changed it back. Now, my filebeat are not able to send data to logstash and I am receiving this errors:
2018/01/20 15:02:10.959887 async.go:235: ERR Failed to publish events caused by: EOF
2018/01/20 15:02:10.964361 async.go:235: ERR Failed to publish events caused by: client is not connected
2018/01/20 15:02:11.964028 output.go:92: ERR Failed to publish events: client is not connected
My second test was change my pipeline like this:
input {
beats {
port => "5044"
}
file{
path => "/home/centos/logs/mylogs.log"
}
}
filter {
grok{
match => { "message" => "%{IP:client} %{WORD:method} %{URIPATHPARAM:request} %{NUMBER:bytes} %{NUMBER:duration}" }
}
}
output {
elasticsearch {
hosts => [ "10.206.81.246:9200", "10.206.81.236:9200", "10.206.81.243:9200" ]
user => "Test"
password => "123456"
index => "mylog-%{+YYYY.MM.dd}"
}
}
If I add some lines to mylog.log file, filebeat will print the same ERR files but it is passed to logstash and I can see it in Kibana. Could anybody explain me why does it not work? What does those errors means?
I am using filebeat an logstash version 6.1.
Sorry if I make any mistake in english.
In the output section, you are using "tag" (note: is in singular) which doesn't exists. But changing this to "tags" will not work either because the field tags is an array and you will be comparing it to a string, so you should get the first item instead of getting the whole array and then compare. Try this:
if [tags[0]] == "mylog" { ......

Kibana does not show fields from grok filter in filebeat

I have log file with apache logs that i want to show in Kibana.
The logs start with IP. I have debuged my pattern and it passes.
I'm trying to add fields in the beats input configuration file, but are not show in Kibana even after refresh of the fields.
Here is the configuration file
filter {
if[type] == "apache" {
grok {
match => { "message" => "%{HOST:log_host}%{GREEDYDATA:remaining}" }
add_field => { "testip" => "%{log_host}" }
add_field => { "data_left" => "%{remaining}" }
}
}
...
Just to add that I have restarted all the services: logstash, elasticsearch, kibana after the new configuration.
The issue could be that your grok pattern is using too rigid of patterns.
Chances are that HOST should be IPORHOST based on your test_ip field's name.
Assuming that the data is actually coming in with the type defined as apache, then it should be:
filter {
if [type] == "apache" {
grok {
match => {
message => "%{IPORHOST:log_host}%{GREEDYDATA:remaining}"
}
add_field => {
testip => "%{log_host}"
data_left => "%{remaining}"
}
}
}
}
Having said that, your usage of add_field is completely unnecessary. The grok pattern itself is creating two fields: log_host and remaining, so there's no need to define extra fields called testip and data_left.
Perhaps even more usefully, you don't need to craft your own Apache web log grok pattern. The COMBINEDAPACHELOG pattern already exists, which gives all of the standard fields automatically.
filter {
if [type] == "apache" {
grok {
match => { "message" => "%{COMBINEDAPACHELOG}" }
}
# Set #timestamp to the log's time and drop the unneeded timestamp
date {
match => [ "timestamp" , "dd/MMM/yyyy:HH:mm:ss Z" ]
remove_field => "timestamp"
}
}
}
You can see this in a more complete example in the Logstash documentation here.

Collect Data from log files with logstash

I'm trying with logstash to collect data from a log file for a version of NETASQ Firewall which contains a lot of lines , but i can not collect correctly my data , I don't know if there is a standard to follow, but I started like this:
input {
stdin { }
file {
type => "FireWall"
path => "/var/log/file.log"
start_position => 'beginning'
}
}
filter {
grok {
match => [ "message", "%{SYSLOGTIMESTAMP:date} %{WORD:id}"]
}
}
output {
stdout { }
elasticsearch {
cluster => "logstash"
}
}
The first line of my file.log looks like this :
Feb 27 04:02:23 id=firewall time="2015-02-27 04:02:23" fw="GVGM-NEWYORK"
tz=+0200 startime="2015-02-27 04:02:22" pri=5 confid=01 slotlevel=2 ruleid=57
srcif="Vlan2" srcifname="SSSSS" ipproto=udp dstif="Ethernet0"
dstifname="out" proto=teredo src=192.168.21.12 srcport=52469
srcportname=ephemeral_fw_udp dst=94.245.121.253 dstport=3544
dstportname=teredo dstname=teredo.ipv6.microsoft.com.nsatc.net
action=block logtype="filter"#015
And finally How can I collect data from the others lines. Please give me a topic just to start. Thanks All.

Resources