We're using logstash to capture log messages.
Application logs sometimes contain very long lines and Splunk cannot ingest messages longer than 10k or so (default).
How to drop large messages with logstash?
Requires Logstash >= 5:
filter {
if [message] {
ruby {
code => "event.cancel if event.get('message').bytesize > 8192"
}
}
}
Related
I have set up an ELK stack on one server and filebeat on 2 other servers to send data directly to logstash.
Setup is working fine and I got log result as per need but when I see field sections on Kibana UI (Left side), I see "host.hostname" field which have two servers fqdns (i.e "ip-113-331-116-35.us-east-1.compute.internal",
"ip-122-231-123-35.us-east-1.compute.internal"
)
I want to set alias or rename those value as Production-1 and Production-2 respectively to show on kibana UI
How can I change those values without breaking anything
If you need any code snippet let me know
You can use the translate filter in the filter block of your logstash pipeline to rename the values.
filter {
translate {
field => "[host][hostname]"
destination => "[host][hostname]"
dictionary => {
"ip-113-331-116-35.us-east-1.compute.internal" => "Production-1"
"ip-122-231-123-35.us-east-1.compute.internal" => "Production-2"
}
}
}
Since the field host.hostname is an ECS-field I would not suggest to rename this particular field.
In my opinion you have two choices:
1.) Create a pipeline in Logstash
You can set up a simple pipeline in Logstash where you use the mutate filter plugin and do a add_field operation. This will create a new field on your event with the value of host.hostname. Here's a quick example:
filter{
if [host][hostname]{
mutate{
add_field => { "your_cool_field_name" => "%{[host][hostname]}" }
}
}
}
2.) Setup a custom mapping/index template
You can define field aliases within your custom mappings. I recommend reading this article about field aliases
I have a csv file which gets updated every hour.I need to upload it to kibana, I want to schedule logstash so that it gets updated every hour in kibana.I have searched many forums but I found about JDBC input scheduling but not for csv input.
You have to write your own logstash pipleline configuration. Based on how to read input, where to output the data. Kibana is a visualisation tool. Data is generally ingested in ElasticSearch and then viewed in Kibana dashboard. Pipeline configuration is read by logstash once it srarts up. A sample pipeline config, which reads csv data from a kafka topic, and pushes to ES is given below.
input {
kafka{
id => "test_id"
group_id => "test-consumer-group"
topics => ["test_metrics"]
bootstrap_servers => "kafka:9092"
consumer_threads => 1
codec => line
}
}
filter {
csv {
separator => ","
columns => ["timestamp","field1", "field2"]
}
}
output {
elasticsearch {
hosts => [ "elasticsearch:9200" ]
index => "_my_metrics"
}
}
Please refer below link to import data from CSV into Elasticsearch via Logstash and SinceDb.
https://qbox.io/blog/import-csv-elasticsearch-logstash-sincedb
Refer below link for more CSV filter plugin Configurations.
https://www.elastic.co/guide/en/logstash/current/plugins-filters-csv.html#plugins-filters-csv-columns
Hope it helps!
Is it possible to create a message using values from two other messages in Graylog using only graylog's default functionality (such as pipelines and streams)?
For example, if two messages arrive in graylog 30 seconds apart:
{
message:"view enter",
timestamp:"2018-01-01 10:10:00.00"
},
{
message:"view leave",
timestamp:"2018-01-01 10:10:30.00"
}
I would like to create a third message with a field showing the difference between the two timestamp fields.
{
message:"view visit duration",
duration:30
}
i want to retrieve the value from snmptrap input ,
The following log was generated while creating a loop,.
{
"message" => "##enterprise=[1.3.6.1.4.1.9.9.187],#timestamp=##value=2612151602>, #varbind_list=[##name= [1.3.6.1.4.1.9.9.187.1.2.5.1.17.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], #value=\"\x00\x00\">, ##name=[1.3.6.1.4.1.9.9.187.1.2.5.1.3.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], #value=##value=1>>, ##name=[1.3.6.1.4.1.9.9.187.1.2.5.1.28.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], #value=\"\">, ##name=[1.3.6.1.4.1.9.9.187.1.2.5.1.29.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], #value=##value=3>>], #specific_trap=7, #source_ip=\"1.2.3.4\", #agent_addr=##value=\"\xC0\xA8\v\e\">, #generic_trap=6>"
}
i want to retrive the value #source_ip from message , i try to use
mutate {
add_field => { "source_ip" =>["#source_ip"] }
}
to get the #souce_ip and for the new field , but still can't get the value ,
If anyone knows how to do with it , please help. Thanks.
The "#source_ip" information is not a field in what you've shown, but rather part of the [message] field. I would guess that the snmptrap{} input is not entirely happy with the message.
Given the example you have, you could run the message through the grok{} filter to pull out the "#source_ip" information.
I stopped using the snmptrap{} input due to other processing issues. I now run snmptrapd and have it write a json log file that is then read by a simple file{} input in logstash.
I am have a webservice which services GET requests of the following pattern
/v1/stores?name=<>&lat=23&lng=232....
There a number of query parameters which the request can accept. Is it possible to get url specific information kibana through log stash on kibana.What I really want is a average number of requests for each pattern along with their max, min and avg response types.I would also
You would want something like this as part of your logstash.conf:
grok {
// some pattern that extracts out the uri param (everything after ?) into a param field
}
kv {
source => 'param'
field_split => '&'
}
// you might also need to urldecode {} the parameters