I'm building a ELK Setup and its working fine , however i'm getting into a situation where i want to remove certain fields from by system-log data while processing through logstash like remove_field & remove_tag which i've defined in my logstash configuration file but that's not working.
Looking for any esteem and expert advice to correct the config to make it running, thanks very much in advanced.
My logstash configuration file:
[root#sandbox-prd~]# cat /etc/logstash/conf.d/syslog.conf
input {
file {
path => [ "/data/SYSTEMS/*/messages.log" ]
start_position => beginning
sincedb_path => "/dev/null"
max_open_files => 64000
type => "sj-syslog"
}
}
filter {
if [type] == "sj-syslog" {
grok {
match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp } %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
add_field => [ "received_at", "%{#timestamp}" ]
remove_field => ["#version", "host", "_type", "_index", "_score", "path"]
remove_tag => ["_grokparsefailure"]
}
syslog_pri { }
date {
match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
}
}
output {
if [type] == "sj-syslog" {
elasticsearch {
hosts => "sandbox-prd02:9200"
manage_template => false
index => "sj-syslog-%{+YYYY.MM.dd}"
document_type => "messages"
}
}
}
Data sample appearing on the Kibana Portal
syslog_pid:6662 type:sj-syslog syslog_message:(root) CMD (LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lock/mrtg/mrtg_l --confcache-file /var/lib/mrtg/mrtg.ok) syslog_severity:notice syslog_hostname:dbaprod01 syslog_severity_code:5 syslog_timestamp:Feb 11 10:25:02 #timestamp:February 11th 2019, 23:55:02.000 message:Feb 11 10:25:02 dbaprod01 CROND[6662]: (root) CMD (LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lock/mrtg/mrtg_l --confcache-file /var/lib/mrtg/mrtg.ok) syslog_facility:user-level syslog_facility_code:1 syslog_program:CROND received_at:February 11th 2019, 10:25:03.353 _id:KpHo2mgBybCgY5IwmRPn _type:messages
_index:sj-syslog-2019.02.11 _score: -
MY Resource Details:
OS version : Linux 7
Logstash Version: 6.5.4
You can't remove _type and _index, those are metadata fields needed by elasticsearch to work, they have information about your index name and the mapping of your data, the _score field is also a metadata field, generated at search time, it's not on your document.
Related
This is just related to the post where i'm using the below grok filter to dissect the data to be visualize into kibana, below is what i'm using into my logstash conf file and working for the data as desired but today I got into a situation where its not filtering the data as desired.
Correct visual at Kibana are like:
received_at:February 1st 2019, 21:00:04.105 float:0.5, 0.0 type:rmlog Hostname:dba- foxon93 Date:19/02/01 User_1:dv_vxehw #version:1 Hour_since:06 Command:rm -rf /data/rg/log
grok filter in logstash conf file:
match => { "message" => "%{HOSTNAME:Hostname},%{DATE:Date},%{HOUR:Hour_since}:%{MINUTE:Mins_since},%{NUMBER}-%{WORD},%{USER:User_1},%{USER:User_2} %{NUMBER:Pid} %{NUMBER:float} %{NUMBER:float} %{NUMBER:Num_1} %{NUMBER:Num_2} %{DATA} %{HOUR:hour2}:%{MINUTE:minute2} %{HOUR:hour3}:%{MINUTE:minute3} %{GREEDYDATA:Command}" }
My logstash conf file:
input {
file {
path => [ "/data/mylogs/*.txt" ]
start_position => beginning
sincedb_path => "/dev/null"
type => "tac"
}
}
filter {
if [type] == "tac" {
grok {
match => { "message" => "%{HOSTNAME:Hostname},%{DATE:Date},%{HOUR:Hour_since}:%{MINUTE:Mins_since},%{NUMBER}-%{WORD},%{USER:User_1},%{USER:User_2} %{NUMBER:Pid} %{NUMBER:float} %{NUMBER:float} %{NUMBER:Num_1} %{NUMBER:Num_2} %{DATA} %{HOUR:hour2}:%{MINUTE:minute2} %{HOUR:hour3}:%{MINUTE:minute3} %{GREEDYDATA:Command}" }
add_field => [ "received_at", "%{#timestamp}" ]
remove_field => [ "#version", "host", "message", "_type", "_index", "_score" ]
}
}
}
output {
if [type] == "rmlog" {
elasticsearch {
hosts => ["localhost:9200"]
manage_template => false
index => "tac-%{+YYYY.MM.dd}"
}
}
}
Below is the new data which is getting processed but i'm not getting the Hostname , Command etc fields for this data.
dbproj01,19/02/01,00:04,23-hrs,cvial,cvial 120804 0.0 0.0 106096 1200 pts/90 S Jan30 0:00 /bin/sh -c /bin/rm -f ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.cxt ../../../../../../
tools.lnx86/dfII/etc/context/64bit/hBrowser.toc ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.aux ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.ini ; (CUR_DIR=`pwd` ;
cd ../../../../obj/linux-x86-64/optimize/bin/virtuoso ; ${CUR_DIR}/../../../../../../tools.lnx86/dfII/bin/virtuoso -ilLoadIL hBrowserBuildContext.il -log hBrowserBuildContext.log -nograph && [ `/bi
n/grep -c Error hBrowserBuildContext.log` = 0 ]) || (echo '*** Error: Failed to build hBrowser context.' ; /bin/rm -f ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.cxt ../../../../..
/../tools.lnx86/dfII/etc/context/64bit/hBrowser.toc ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.aux ../../../../../../tools.lnx86/dfII/etc/context/64bit/hBrowser.ini ; exit 1),/pro
j/cvial/WS/BUNGEE/REBASE_190120-138_2/tools.lnx86/dfII/group/bin/src
I see your issue in %{HOUR:hour2}:%{MINUTE:minute2} value as it returns as date Jan30 not time and also its included in %{DATA} section.
Below pattern will handle it
%{HOSTNAME:Hostname},%{DATE:Date},%{HOUR:Hour_since}:%{MINUTE:Mins_since},%{NUMBER}-%{WORD},%{USER:User_1},%{USER:User_2} %{NUMBER:Pid} %{NUMBER:float} %{NUMBER:float} %{NUMBER:Num_1} %{NUMBER:Num_2} %{DATA} (?:%{HOUR:hour2}:|)(?:%{MINUTE:minute2}|) (?:%{HOUR:hour3}:|)(?:%{MINUTE:minute3}|)%{GREEDYDATA:Command}
Also you can use Grok Debug for pattern test.
As a newbie to logstash i would like to understand as i have two types of logs one is Linux system logs and another i have CISCO switches logs , now i'm looking forward to create the diffrent input and filter's for both.
I have defined the type for linux logs as syslog and for CISCO switches as APIC and want to define the and for filter section. My CISCO log pattrens sample is as below where my SWITCH NAME is 7th Field in the messages , so wonder how to take that 7th field as a Hostname for swiches.
Aug 23 16:36:58 Aug 23 11:06:58.830 mydc-leaf-3-5 %LOG_-1-SYSTEM_MSG [E4210472][transition][info][sys] sent user message to syslog group:Syslog_Elastic_Server:final
Blow is my logstash-syslog.conf file which is working for syslog but needs while for CISCO logs ie type => APIC ..
# cat logstash-syslog.conf
input {
file {
path => [ "/scratch/rsyslog/*/messages.log" ]
type => "syslog"
}
file {
path => [ "/scratch/rsyslog/Aug/messages.log" ]
type => "APIC"
}
}
filter {
if [type] == "syslog" {
grok {
match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp } %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
add_field => [ "received_at", "%{#timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
syslog_pri { }
date {
match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
}
if [type] == "APIC" {
grok {
match => { "message" => "%{CISCOTIMESTAMP:syslog_timestamp} %{CISCOTIMESTAMP} %{SYSLOGHOST:syslog_hostname} %{GREEDYDATA:syslog_message}" }
add_field => [ "received_at", "%{#timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
}
}
output {
#if "automount" in [message] or "ldap" in [message] {
elasticsearch {
hosts => "noida-elk:9200"
index => "syslog-%{+YYYY.MM.dd}"
#index => "%{[type]}-%{+YYYY.MM.dd}"
#index => "%{index}-%{+YYYY.MM.dd}"
#type => "%{type}
document_type => "messages"
}
}
Filter works correctly for below message and i get the Field syslog_hostname correctly, here in case i get can get the linuxdev.
Aug 24 10:34:02 linuxdev automount[1905]: key ".P4Config" not found in map source(s).
Filter do not work for below message..
Aug 24 10:26:22 Aug 24 04:56:22.444 my-apic-1 %LOG_-3-SYSTEM_MSG [F1546][soaking_clearing][packets-dropped][minor][dbgs/ac/sdvpcpath-207-208-to-109-110/fault-F1546] 2% of packets were dropped during the last collection interval
After some grokking here is my pattern for Cisco APIC syslogs:
%{SYSLOG5424PRI:initial_code}%{CISCOTIMESTAMP:cisco_timestamp}%{SPACE}%{TZ}%{ISO8601_TIMEZONE}%{SPACE}%{URIHOST:uri_host}%{SPACE}%{SYSLOGPROG:syslog_prog}%{SPACE}%{SYSLOG5424SD:message_code}%{SYSLOG5424SD:message_type}%{SYSLOG5424SD:messa
ge_class}%{NOTSPACE:message_dn}%{SPACE}%{GREEDYDATA:message_content}
Let me have some feedbacks to improve.
I am trying to implement Logstash for logging few custom files, for which I have to get the lines containing the words : " out of swap memory". Following are the content of /etc/logstash/conf.d/10-syslog.conf file where in I have created custom_error type filter for the custom log files which I need to log to get the desired line :
filter {
if [type] == "syslog" {
grok {
match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
add_field => [ "received_at", "%{#timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
syslog_pri { }
date {
match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
}
if [type] == "custom_error" {
grok {
match => { "message" => "Exception java.lang.OutOfMemoryError: requested %{NUMBER:int} bytes for promotion. Out of swap space?" }
add_field => [ "received_at", "%{#timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
date {
match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
}
}
But still I am not getting the desired result and lot of other messages along with required line are also showing up which is making the log message far too lengthy.
How shall I achieve just the required line from log files?
If I understand your question, you can use conditional in your logstash configuration.
It is explained here in the documentation.
So if you want to specifically filter lines containing the word out of swap memory, you can use:
if ([message] =~ / out of swap memory/) {
...
only the lines containing "out of swap memory" will go through this part.
}
I am using Logstash 1.4.2 and I have the following conf file.
I would expect to see in Kibana in the "Fields" section on the left the options for "received_at" and "received_from" and "description", but I don't.
I see
#timestamp
#version
_id
_index
_type host path
I do see in the _source section on the right side the following...
received_at:2015-05-11 14:19:40 UTC received_from:PGP02 descriptionError1!
So home come these don't appear in the list of "Popular Fields"?
I'd like to filter the right side to not show EVERY field in the _source section on the right. Excuse the redaction blocks.
input
{
file {
path => "C:/ServerErrlogs/office-log.txt"
start_position => "beginning"
sincedb_path => "c:/tools/logstash-1.4.2/office-log.sincedb"
tags => ["product_qa", "office"]
}
file {
path => "C:/ServerErrlogs/dis-log.txt"
start_position => "beginning"
sincedb_path => "c:/tools/logstash-1.4.2/dis-log.sincedb"
tags => ["product_qa", "dist"]
}
}
filter {
grok {
match => ["path","%{GREEDYDATA}/%{GREEDYDATA:filename}\.log"]
match => [ "message", "%{TIMESTAMP_ISO8601:logdate}: %{LOGLEVEL:loglevel} (?<logmessage>.*)" ]
add_field => [ "received_at", "%{#timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
date {
match => [ "logdate", "ISO8601", "yyyy-MM-dd HH:mm:ss,SSSSSSSSS" ]
}
#logdate is now parsed into timestamp, remove original log message too
mutate {
remove_field => ['message', 'logdate' ]
add_field => [ "description", "Error1!" ]
}
}
output {
elasticsearch {
protocol => "http"
host => "0.0.0.x"
}
}
Update:
I have tired searching with a query like:
tags: data AND loglevel : INFO
then saving this query, and then reloading the page.
But still I don't see loglevel appearing as 'Popular Fields'
If the fields don't appear on the left side, it's probably a kibana caching problem. Go to Settings->Indices, select your index, and click the orange Refresh button.
I had the same issue with logstash not adding fields and after quite a lot of searching and testing other things, suddenly I had the solution (but I´am using the logstash-logback-encoder, so I have JSON already - if you don´t, then you need to transform things into JSON in the logstash "input"-phase).
I added a "json" plugin-filter, that did the magic for me:
filter {
json {
source => "message"
}
}
i am trying to parse this log line:
- 2014-04-29 13:04:23,733 [main] INFO (api.batch.ThreadPoolWorker) Command-line options for this run:
here's the logstash config file i use:
input {
stdin {}
}
filter {
grok {
match => [ "message", " - %{TIMESTAMP_ISO8601:time} \[%{WORD:main}\] %{LOGLEVEL:loglevel} %{JAVACLASS:class} %{DATA:mydata} "]
}
date {
match => [ "timestamp" , "dd/MMM/yyyy:HH:mm:ss Z" ]
}
output {
elasticsearch {
host => "localhost"
}
stdout { codec => rubydebug }
}
Here's the output i get:
{
"message" => " - 2014-04-29 13:04:23,733 [main] INFO (api.batch.ThreadPoolWorker) Commans run:",
"#version" => "1",
"#timestamp" => "2015-02-02T10:53:58.282Z",
"host" => "NAME_001.corp.com",
"tags" => [
[0] "_grokparsefailure"
]
}
Please if anyone can help me find where the problem is on the gork pattern.
I tried to parse that line in http://grokdebug.herokuapp.com/ but it parses only the timestamp, %{WORD} and %{LOGLEVEL} the rest is ignored!
There are two error in your config.
First
The error in GROK is the JAVACLASS, you have to include ( ) in the pattern, For example: \(%{JAVACLASS:class}\.
Second
The date filter match have two value, first is the field you want to parse, so in your example it is time, not timestamp. The second value is the date pattern. You can refer to here
Here is the config
input {
stdin {
}
}
filter {
grok {
match => [ "message", " - %{TIMESTAMP_ISO8601:time} \[%{WORD:main}\] %{LOGLEVEL:loglevel} \(%{JAVACLASS:class}\) %{GREEDYDATA:mydata}"
]
}
date {
match => [ "time" , "YYYY-MM-dd HH:mm:ss,SSS" ]
}
}
output
{
stdout {
codec => rubydebug
}
}
FYI. Hope this can help you.