I'm trying to convert the syslog date format to a date timestamp that kibana recognizes, since it always appears as a string once the log is processed to elastic search.
This is what I've tried so far
input {
file {
path => "C:/Elasitcity/File Destination/logs2/*.*"
start_position => "beginning"
sincedb_path => "NUL"
}
}
filter {
grok {
match => {"message" =>"%{SYSLOGTIMESTAMP:logstamp}.*POST for %{URIPATH:ServiceURI}"}
}
date {
match => [ "logstamp", "MMM dd HH:mm:ss" ]
}
}
output {
elasticsearch {
hosts => "localhost"
index => "nextgen2"
document_type => "netboading"
}
stdout {}
}
I'm trying to extract the date from this log below
Jun 12 04:27:35 1560306455 INCOMING: information 22.244.42.41 Jun 12 04:27:22 DPPRD01 [host_services][0x80e0013a][mpgw][info] source-https(IMS_SSL_29982): trans(2797190703)[12.6.1.16]: Received HTTP/1.1 POST for /services/NHgetInternetLimitsV1 from 10.6.17.166
I'm simply trying to get elastic search to acknowledge logstamp as a timestamp that kibana can use for dashboarding purposes.
I think you need to set your target like this:
date{
match => ["logstamp", "MMM dd HH:mm:ss", "ISO8601"]
timezone => "Europe/Berlin"
target => "#timestamp"
}
Related
I have some problems while using logstash to opensearch.
filter{
grok {
patterns_dir => ["/etc/logstash/conf.d/patterns"]
match => [ "message","%{DATE_FORM:logdate}%{LOGTYPE:logtype}:%{SPACE}%{GREEDYDATA:msgbody}" ]
}
date {
match => ["logdate", "yyyy.MM.dd-HH.mm.ss:SSS"]
timezone => "UTC"
target=>"timestamp"
}
mutate {
remove_field => ["message"]
add_field => {
"file" => "%{[#metadata][s3][key]}"
}
}
}
This is the conf file I'm using for logstash.
In the opensearch console
#timestamp : Dec 15, 2022 # 18:10:56.975
logdate [2022.12.10-11.57.36:345]
tags _dateparsefailure
The timestamp , logdate are different and _dateparsefailure error occurs.
In the raw logs , it starts with
[2022.12.10-11.57.36:345]
this format.
Right now ,
logdate : raw log's timestamp
#timestamp : the time that log send to opensearch
I want to match logdate and #timestamp.
How can I modify the filter.date.match part to make the results of the logdate and #timestamp filters the same?
If you have multiple times you can have more than one filter.date.match, you can do this:
filter{
date {
match => ["logdate", "yyyy.MM.dd-HH.mm.ss:SSS"]
timezone => "UTC"
target=>"logdate"
}
date {
match => ["#timestamp", "yyyy.MM.dd-HH.mm.ss:SSS"]
timezone => "UTC"
target=>"#timestamp"
}
}
If your time field has multiple formats, you can do this:
date {
match => [ "logdate", "yyyy.MM.dd-HH.mm.ss:SSS", "third_format", "ISO8601" ]
target=> "#timestamp"
}
Reference: https://www.elastic.co/guide/en/logstash/current/plugins-filters-date.html#plugins-filters-date-match
I have ELK running for log analysis. I have everything working. There are just a few tweaks I would like to make. To all the ES/ELK Gods in stackoverflow, I'd appreciate any help on this. I'd gladly buy you a cup of coffee! :D
Example:
URL: /origina-www.domain.com/this/is/a/path?page=2
First I would like to get the entire path as seen above.
Second, I would like to get just the path before the parameter: /origina-www.domain.com/this/is/a/path
Third, I would like to get just the parameter: ?page=2
Fourth, I would like to make the timestamp on the logfile be the main time stamp on kibana. Currently, the timestamp kibana is showing is the date and time the ES was processed.
This is what a sample entry looks like:
2016-10-19 23:57:32 192.168.0.1 GET /origin-www.example.com/url 200 1144 0 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" "-" "-"
Here's my config:
if [type] == "syslog" {
grok {
match => ["message", "%{IP:client}\s+%{WORD:method}\s+%{URIPATHPARAM:request}\s+%{NUMBER:bytes}\s+%{NUMBER:duration}\s+%{USER-AGENT}\s+%{QS:referrer}\s+%{QS:agent}%{GREEDYDATA}"]
}
date {
match => [ "timestamp", "MMM dd, yyyy HH:mm:ss a" ]
locale => "en"
}
}
ES Version: 5.0.1
Logstash Version: 5.0
Kibana: 5.0
UPDATE: I was actually able to solve it by using:
grok {
match => ["message", "%{IP:client}\s+%{WORD:method}\s+%{URIPATHPARAM:request}\s+%{NUMBER:bytes}\s+%{NUMBER:duration}\s+%{USER-AGENT}\s+%{QS:referrer}\s+%{QS:agent}%{GREEDYDATA}"]
}
grok {
match => [ "request", "%{GREEDYDATA:uri_path}\?%{GREEDYDATA:uri_query}" ]
}
kv {
source => "uri_query"
field_split => "&"
target => "query"
}
In order to use the actual timestamp of your log entry rather than the indexed time, you could use the date and mutate plugins as such to override the existing timestamp value. You could have your logstash filter look, something like this:
//filtering your log file
grok {
patterns_dir => ["/pathto/patterns"] <--- you could have a pattern file with such expression LOGTIMESTAMP %{YEAR}%{MONTHNUM}%{MONTHDAY} %{TIME} if you have to change the timestamp format.
match => { "message" => "^%{LOGTIMESTAMP:logtimestamp}%{GREEDYDATA}" }
}
//overriding the existing timestamp with the new field logtimestamp
mutate {
add_field => { "timestamp" => "%{logtimestamp}" }
remove_field => ["logtimestamp"]
}
//inserting the timestamp as UTC
date {
match => [ "timestamp" , "ISO8601" , "yyyyMMdd HH:mm:ss.SSS" ]
target => "timestamp"
locale => "en"
timezone => "UTC"
}
You could follow up Question for more as well. Hope it helps.
grok {
match => ["message", "%{IP:client}\s+%{WORD:method}\s+%{URIPATHPARAM:request}\s+%{NUMBER:bytes}\s+%{NUMBER:duration}\s+%{USER-AGENT}\s+%{QS:referrer}\s+%{QS:agent}%{GREEDYDATA}"]
}
grok {
match => [ "request", "%{GREEDYDATA:uri_path}\?%{GREEDYDATA:uri_query}" ]
}
kv {
source => "uri_query"
field_split => "&"
target => "query"
}
So I have log messages of the format :
[INFO] <blah.blah> 2016-06-27 21:41:38,263 some text
[INFO] <blah.blah> 2016-06-28 18:41:38,262 some other text
Now I want to drop all logs that does not contain a specific string "xyz" and keep all the rest. I also want to index timestamp.
grokdebug is not helping much.
This is my attempt :
input {
file {
path => "/Users/username/Desktop/validateLogconf/logs/*"
start_position => "beginning"
}
}
filter {
grok {
match => {
"message" => '%{SYSLOG5424SD:loglevel} <%{JAVACLASS:job}> %{GREEDYDATA:content}'
}
}
date {
match => [ "Date", "YYYY-mm-dd HH:mm:ss" ]
locale => en
}
}
output {
stdout {
codec => plain {
charset => "ISO-8859-1"
}
}
elasticsearch {
hosts => "http://localhost:9201"
index => "hello"
}
}
I am new to grok so patterns above might not be making sense. Please help.
To drop the message that does not contain the string xyz:
if ([message] !~ "xyz") {
drop { }
}
Your grok pattern is not grabbing the date part of your logs.
Once you have a field from your grok pattern containing the date, you can invoque the date filter on this field.
So your grok filter should look like this:
grok {
match => {
"message" => '%{SYSLOG5424SD:loglevel} <%{JAVACLASS:job}> %{TIMESTAMP_ISO8601:Date} %{GREEDYDATA:content}'
}
}
I added a part to grab the date, which will be in the field Date. Then you can use the date filter:
date {
match => [ "Date", "YYYY-mm-dd HH:mm:ss,SSS" ]
locale => en
}
I added the ,SSS so that the format match the one from the Date field.
The parsed date will be stored in the #timestamp field, unless specified differently with the target parameter.
to check if your message contains a substring, you can do:
if [message] =~ "a" {
mutate {
add_field => { "hello" => "world" }
}
}
So in your case you can use the if to invoke the drop{} filter, or you can wrap your output plugin in it.
To parse a date and write it back to your timestamp field, you can use something like this:
date {
locale => "en"
match => ["timestamp", "ISO8601"]
timezone => "UTC"
target => "#timestamp"
add_field => { "debug" => "timestampMatched"}
}
This matches my timestamp in:
Source field: "timestamp" (see match)
Format is "ISO...", you can use a custom format that matches your timestamp
timezone - self explanatory
target - write it back into the event's "#timestamp" field
Add a debug field to check that it has been matched correctly
Hope that helps,
Artur
I'm using Logstash to forward error logs from app servers to ES. Everything is working fine except that log timestamp going as string to ES.
Here is my log format
[Date:2015-03-25 01:29:09,554] [ThreadId:4432] [HostName:AEPLWEB1] [Host:(null)] [ClientIP:(null)] [Browser:(null)] [UserAgent:(null)] [PhysicalPath:(null)] [Url:(null)] [QueryString:(null)] [Referrer:(null)] [Carwale.Notifications.ExceptionHandler] System.InvalidCastException: Unable to cast object of type 'Carwale.Entity.CMS.Articles.ArticleDetails' to type 'Carwale.Entity.CMS.Articles.ArticlePageDetails'. at Carwale.Cache.Core.MemcacheManager.GetFromCacheCore[T](String key, TimeSpan cacheDuration, Func`1 dbCallback, Boolean& isKeyFirstTimeCreated)
Filter configuration for logstash forwarder
filter {
multiline {
pattern => "^\[Date:%{TIMESTAMP_ISO8601}"
negate => true
what => "previous"
}
grok {
match => [ "message", "(?:Date:%{TIMESTAMP_ISO8601:log_timestamp})\] \[(?:ThreadId:%{NUMBER:ThreadId})\] \[(?:HostName:%{WORD:HostName})\] \[(?:Host:\(%{WORD:Host})\)\] \[(?:ClientIP:\(%{WORD:ClientIP})\)\] \[(?:Browser:\(%{WORD:Browser})\)\] \[(?:UserAgent:\(%{WORD:UserAgent})\)\] \[(?:PhysicalPath:\(%{WORD:PhysicalPath})\)\] \[(?:Url:\(%{WORD:Url})\)\] \[(?:QueryString:\(%{WORD:QueryString})\)\] \[(?:Referrer:\(%{WORD:Referrer})\)\] \[%{DATA:Logger}\] %{GREEDYDATA:err_message}" ]
}
date {
match => [ "log_timestamp", "MMM dd YYY HH:mm:ss","MMM d YYY HH:mm:ss", "ISO8601" ]
target => "log_timestamp"
}
mutate {
convert => ["ThreadId", "integer"]
}
}
How I can make it date in ES? Please help. Thanks in advance.
I had the similar issue. Now fixed it with the below workaround.
grok {
match => {
"message" => "%{YEAR:year}-%{MONTHNUM:month}-%{MONTHDAY:day}[T ]%{HOUR:hour}:%{MINUTE:minute}:%{SECOND:second}"
}
}
grok{
match => {
"second" => "(?<asecond>(^[^,]*))" }
}
mutate {
add_field => {
"timestamp" => "%{year}-%{month}-%{day} %{hour}:%{minute}:%{asecond}"
}
}
date{ match => [ "timestamp", "yyyy-MM-dd HH:mm:ss" ] timezone=> "UTC" target => "log_timestamp" }
Thanks,
In my scenario, the "timestamp" of the syslog lines Logstash receives is in UTC and we use the event "timestamp" in the Elasticsearch output:
output {
elasticsearch {
embedded => false
host => localhost
port => 9200
protocol => http
cluster => 'elasticsearch'
index => "syslog-%{+YYYY.MM.dd}"
}
}
My problem is that at UTC midnight, Logstash sends log to different index before the end of the day in out timezone (GMT-4 => America/Montreal) and the index has no logs after 20h (8h PM) because of the "timestamp" being UTC.
We've done a work arround to convert the timezone but we experience a significant performance degradation:
filter {
mutate {
add_field => {
# Create a new field with string value of the UTC event date
"timestamp_zoned" => "%{#timestamp}"
}
}
date {
# Parse UTC string value and convert it to my timezone into a new field
match => [ "timestamp_zoned", "yyyy-MM-dd HH:mm:ss Z" ]
timezone => "America/Montreal"
locale => "en"
remove_field => [ "timestamp_zoned" ]
target => "timestamp_zoned_obj"
}
ruby {
# Output the zoned date to a new field
code => "event['index_day'] = event['timestamp_zoned_obj'].strftime('%Y.%m.%d')"
remove_field => [ "timestamp_zoned_obj" ]
}
}
output {
elasticsearch {
embedded => false
host => localhost
port => 9200
protocol => http
cluster => 'elasticsearch'
# Use of the string value
index => "syslog-%{index_day}"
}
}
Is there a way to optimize this config?
This is the optimize config, please have a try and test for the performance.
You no need to use mutate and date plugin. Use ruby plugin directly.
input {
stdin {
}
}
filter {
ruby {
code => "
event['index_day'] = event['#timestamp'].localtime.strftime('%Y.%m.%d')
"
}
}
output {
stdout { codec => rubydebug }
}
Example output:
{
"message" => "test",
"#version" => "1",
"#timestamp" => "2015-03-30T05:27:06.310Z",
"host" => "BEN_LIM",
"index_day" => "2015.03.29"
}
In logstash version 5.0 and later, you can use this:
filter{
ruby {
code => "event.set('index_day', event.get('[#timestamp]').time.localtime.strftime('%Y%m%d'))"
}
}
In version 1.5.0, we can convert timestamp by local timezone for the index name. Here is my configuration:
filter {
ruby {
code => "event['index_day'] = event.timestamp.time.localtime.strftime('%Y.%m.%d')"
}
}
output {
elasticsearch {
host => localhost
index => "thrall-%{index_day}"
}
}
In Logstash Version 5.0.2，The API was modified. We can convert timestamp by local timezone for the index name. Here is my configuration:
filter {
ruby {
code => "event['index_day'] = event.timestamp.time.localtime.strftime('%Y.%m.%d')"
}
}
Similar use case - but using the logstash file output plugin and writing files dated by the local time of the arrival of the event.
Verified on logstash version 7.12.
Adapted from discuss.elastic.co, mainly zero padding the offset hours. NB! If your offset has half hours you will need to adjust accordingly.
filter {
ruby {
code => "
require 'tzinfo'
tz = 'Europe/Oslo'
offset = TZInfo::Timezone.get(tz).current_period.utc_total_offset / (60*60)
event.set('[#metadata][local_date]',
event.get('#timestamp').time.localtime(
sprintf('+%02i:00', offset.to_s)
).strftime('%Y%m%d'))
"
}
if ([agent][type] == "filebeat") {
mutate {
add_field => ["file_path", "%{[host][name]}_%{[log][file][path]}.%{[#metadata][local_date]}"]
}
} else {
mutate {
add_field => ["file_path", "%{[agent][hostname]}_%{[agent][type]}.%{[#metadata][local_date]}"]
}
}
}