I need to filter error messages from microsoft eventlogs from logstash. ELK is running on ubunu 14.04 machine
logstash configuration
input {
tcp {
port => 5045
type => 'eventlog'
}
}
filter{
if [type] == 'eventlog' {
if [Severity] == "ERROR" {
mutate {
add_tag => "error"
}
}
}
}
output {
elasticsearch {
hosts => ["IP_ADDRSS:9200"]
}
if "error" in [tags]{
stdout { codec => 'rubydebug' }
}
}
But still I am getting thousands of eventlogs from which I can't filter out the error logs.
How to effectively filter error logs from all type of eventlogs?
How are you ingesting the data? Not clear from the input configuration. If you use Winlogbeat, filtering should work fine.
There was no tag named "Severity:ERROR". So I added codec => "json" in tcp input. Now there is error tag in log. So I can filter it out.
Related
Currently my logstash input is listening to filebeat on port XXXX,my requirement is to collect log data only from a particular hosts(let's say only from Webservers). I dont want to modify the filebeat configuration directly on to the servers but I want allow only the webservers logs to listen in.
Could anyone suggest how to configure the logstash in this scenario? Following is mylogstash input configuration.
**input {
beats {
port => 50XX
}
}**
In a word, "no", you cannot configure the input to restrict which hosts it will accept input from. What you can do is drop events from hosts you are not interested in. If the set of hosts you want to accept input from is small then you could do this using a conditional
if [beat][hostname] not in [ "hosta", "hostb", "hostc" ] { drop {} }
Similarly, if your hostnames follow a fixed pattern you might be able to do it using a regexp
if [beat][hostname] !~ /web\d+$/ { drop {} }
would drop events from any host whose name did not end in web followed by a number.
If you have a large set of hosts you could use a translate filter to determine if they are in the set. For example, if you create a csv file with a list of hosts
hosta,1
hostb,1
hostc,1
then do a lookup using
translate {
field => "[beat][hostname]"
dictionary_path => "/some/path/foo.csv"
destination => "[#metadata][field]"
fallback => "dropMe"
}
if [#metadata][field] == "dropMe" { drop {} }
#Badger - Thank you for your response!
As you rightly mentioned, I have large number of hosts, and all my web servers follows naming convention(for an example xxxwebxxx). Could you please brief me the following
translate {
field => "[beat][hostname]"
dictionary_path => "/some/path/foo.csv"
destination => "[#metadata][field]"
fallback => "dropMe"
}
if [#metadata][field] == "dropMe" { drop {}
Also, please suggest how to add the above to my logstash.conf, PFB this is how my logstash.conf looks like
input {
beats {
port => 5xxxx
}
}
filter {
if [type] == "XXX" {
grok {
match => [ "message", '"%{TIMESTAMP_ISO8601:logdate}"\t%{GREEDYDATA}']
}
grok {
match => [ "message", 'AUTHENTICATION-(?<xxx_status_code>[0-9]{3})']
}
grok {
match => [ "message", 'id=(?<user_id>%{DATA}),']
}
if ([user_id] =~ "_agent") {
drop {}
}
grok {
match => [ "message", '%{IP:clientip}' ]
}
date {
match => [ "logdate", "ISO8601", "YYYY-MM-dd HH:mm:ss"]
locale => "en"
}
geoip {
source => "clientip"
}
}
}
output {
elasticsearch {
hosts => ["hostname:port"]
}
stdout { }
}
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" { ......
Data missed a lot in logstash version 5.0,
is it a serous bug ,when a config the config file so many times ,it useless,data lost happen again and agin, how to use logstash to collect log event property ?
any reply will thankness
Logstash is all about reading logs from specific location and based on you interested information you can create index in elastic search or other output also possible.
Example of logstash conf
input {
file {
# PLEASE SET APPROPRIATE PATH WHERE LOG FILE AVAILABLE
#type => "java"
type => "json-log"
path => "d:/vox/logs/logs/vox.json"
start_position => "beginning"
codec => json
}
}
filter {
if [type] == "json-log" {
grok {
match => { "message" => "UserName:%{JAVALOGMESSAGE:UserName} -DL_JobID:%{JAVALOGMESSAGE:DL_JobID} -DL_EntityID:%{JAVALOGMESSAGE:DL_EntityID} -BatchesPerJob:%{JAVALOGMESSAGE:BatchesPerJob} -RecordsInInputFile:%{JAVALOGMESSAGE:RecordsInInputFile} -TimeTakenToProcess:%{JAVALOGMESSAGE:TimeTakenToProcess} -DocsUpdatedInSOLR:%{JAVALOGMESSAGE:DocsUpdatedInSOLR} -Failed:%{JAVALOGMESSAGE:Failed} -RecordsSavedInDSE:%{JAVALOGMESSAGE:RecordsSavedInDSE} -FileLoadStartTime:%{JAVALOGMESSAGE:FileLoadStartTime} -FileLoadEndTime:%{JAVALOGMESSAGE:FileLoadEndTime}" }
add_field => ["STATS_TYPE", "FILE_LOADED"]
}
}
}
filter {
mutate {
# here converting data type
convert => { "FileLoadStartTime" => "integer" }
convert => { "RecordsInInputFile" => "integer" }
}
}
output {
elasticsearch {
# PLEASE CONFIGURE ES IP AND PORT WHERE LOG DOCs HAS TO PUSH
document_type => "json-log"
hosts => ["localhost:9200"]
# action => "index"
# host => "localhost"
index => "locallogstashdx_new"
# workers => 1
}
stdout { codec => rubydebug }
#stdout { debug => true }
}
To know more you can go throw many available websites like
https://www.elastic.co/guide/en/logstash/current/first-event.html
I am using logstash for the first time and trying to setup a simple pipeline for just printing the nginx logs. Below is my config file
input {
file {
path => "/var/log/nginx/*access*"
}
}
output {
stdout { codec => rubydebug }
}
I have saved the file as /opt/logstash/nginx_simple.conf
And trying to execute the following command
sudo /opt/logstash/bin/logstash -f /opt/logstash/nginx_simple.conf
However the only output I can see is:
Logstash startup completed
Logstash shutdown completed
The file is not empty for sure. As per my understanding I should be seeing the output on my console. What am I doing wrong ?
Make sure that the character encoding of your logfile is UTF-8. If it is not, try to change it and restart the Logstash.
Please try this code as your Logstash configuration, in order to setup a simple pipeline for just printing the nginx logs.
input {
file {
path => "/var/log/nginx/*.log"
type => "nginx"
start_position => "beginning"
sincedb_path=> "/dev/null"
}
}
filter {
if [type] == "nginx" {
grok {
patterns_dir => "/home/krishna/Downloads/logstash-2.1.0/pattern"
match => {
"message" => "%{NGINX_LOGPATTERN:data}"
}
}
}
date {
match => [ "timestamp" , "dd/MMM/yyyy:HH:mm:ss Z" ]
}
}
output {
elasticsearch {
hosts => [ "127.0.0.1:9200" ]
}
stdout { codec => rubydebug }
}
I have just put up an ELK stack, but I am having trouble regarding the logstash configuration in /etc/logstash/conf.d I have two input sources being forwarded from one linux server, which has a logstash forwarder installed on it with the "files" looking like:
{
"paths": ["/var/log/syslog","/var/log/auth.log"],
"fields": { "type": "syslog" }
},
{
"paths": ["/var/log/osquery/osqueryd.results.log"],
"fields": { "type": "osquery_json" }
}
As you can see, one input is an osquery output (json formatted), and the other is syslog. My current config for logstash is osquery.conf:
input {
lumberjack {
port => 5003
ssl_certificate => "/etc/pki/tls/certs/logstash-forwarder.crt"
ssl_key => "/etc/pki/tls/private/logstash-forwarder.key"
codec => "json"
}
}
filter {
if [type] == "osquery_json" {
date {
match => [ "unixTime", "UNIX" ]
}
}
}
output {
elasticsearch { host => localhost }
stdout { codec => rubydebug }
}
Which works fine for the one input source, but I do not know how to add my other syslog input source to the same config, as the "codec" field is in the input -- I can't change it to syslog...
I am also planning on adding another input source in a windows log format that is not being forwarded by a logstash forwarder. Is there anyway to structure this differently?
It's probably better to just remove the codec from your input if you are going to be handling different codecs on the same input:
input {
lumberjack {
port => 5003
ssl_certificate => "/etc/pki/tls/certs/logstash-forwarder.crt"
ssl_key => "/etc/pki/tls/private/logstash-forwarder.key"
}
}
filter {
if [type] == "osquery_json" {
json {
source => "field_name_the_json_encoded_data_is_stored_in"
}
date {
match => [ "unixTime", "UNIX" ]
}
}
if [type] == "syslog" {
}
}
output {
elasticsearch { host => localhost }
stdout { codec => rubydebug }
}
Then you just need to decide what you want to do with your syslog messages.
I would suggest also splitting your config into multiple files. I tend to to use 01-filename.conf - 10-filename.conf for inputs, 11-29 as filters and anything above that for outputs. These files will be loaded in to logstash in the order they are printed in an ls.