Logstash configuration update - outputs and concluding note




Config files like this:
  • 90-outputs_start.conf
  • 91-outputs_elasticsearch.conf
  • 92-outputs_nagios.conf
  • 93-outputs_graphite.conf
  • 99-outputs_end.conf


Outputs
90-outputs_start
output {
Orrrrrganization.

91-outputs_elasticsearch
# Old embedded ES
#elasticsearch {
#               host => "127.0.0.1"
#       #cluster => "elasticsearch"
#       }
# New ES cluster
elasticsearch {
        host => "es01.domain.com"
        cluster => "site.elk.elasticsearch"
        }
Just a simple ES output - note that I left in the old embedded config stuff for some reason.  Another reason to get these things into Git!!

92-outputs_nagios
# This sends nagios output only if the service and status fields
# are populated
if [nagios_service] =~ /./ and [nagios_status] =~ /./ {
        if "nagios_check_eventlog_biztalk" in [tags] {
                nagios_nsca {
                                        host => "omdbox.domain.com"
                                        port => 5667
                                        send_nsca_config => "/etc/nagios/send_nsca.cfg"
                                        nagios_host => "%{Hostname}"
                                        nagios_service => "%{nagios_service}"
                                        nagios_status => "%{nagios_status}"
                                        message_format => "%{EventTime} %{EventID} %{SourceName}"
                }
        } #end nagios eventlog_biztalk
        if "nagios_check_iis" in [tags] {
                nagios_nsca {
                                        host => "omdbox.domain.com"
                                        port => 5667
                                        send_nsca_config => "/etc/nagios/send_nsca.cfg"
                                        nagios_host => "%{hostname}"
                                        nagios_service => "%{nagios_service}"
                                        nagios_status => "%{nagios_status}"
                                        message_format => "%{EventTime} %{cs-method} %{cs-uri-stem} %{sc-status}"
                }
        } #end nagios iislogs
}# End nagios service/status
This is where we send to Nagios, and the reason for separate nsca outputs?  message_format is type-specific.  For example, Event Logs don't have cs-method, so I assume it'll fail.  (note that the EV section of this is awaiting testing, but should work - the IIS section already works)

As a side note - these dump into OMD/Check_MK.  I've configured passive services to match the Nagios service fields.

93-outputs_graphite
# Output metrics to graphite
if [SourceName] == "IIS" {
        graphite {
                host => "graphite.domain.com"
                metrics => [
                        "IIS.cs-bytes", "%{cs-bytes}",
                        "IIS.cs-method", "%{cs-method}",
                        "IIS.sc-bytes", "%{sc-bytes}",
                        "IIS.sc-status", "%{sc-status}",
                        "IIS.sc-substatus", "%{sc-substatus}",
                        "IIS.time-taken", "%{time-taken}"
                ]
        }
}
Exporting metric data from Logstash to Graphite.  I don't know if there is any coherence to this (I suspect there isn't), but it was testing, and proved it works.


99-outputs_end
} # End output section
No surprises here.  End!

Conclusion...

There you have it: How we use Logstash in a Windows environment.  Hope this helps someone get started!






Comments

  1. Chris TrotterJanuary 13, 2015 at 3:29 AM

    As a quick update to this, one of the Logstash-users contributors pointed out some improvements we could make: https://groups.google.com/forum/#!topic/logstash-users/EAb2jQqexr4

    "The reason you use tag_on_failure is due to the fact you call grok sometimes when you know it won't match.

    Take for example your nagios tagging, You call one grok followed by another inside the "if [SourceName] == "BizTalk Server" {" only expecting one to match. To avoid the need to have it try a grok when its going to fail you can extract the decider ahead of time. For example if you have extracted the SeverityValue already then you would just do "if [SeverityValue] == '[4]'" before the first grok. Of course as the grok is not really extracting anything but only tagging the event you could do away with the grok completely and just use mutate add_tag.

    Similarly in your iss tagging if you extra sc_status as an int, you can do (if [sc_status] >= 200 and [sc_status] < 299) mutate, it as an int will make it easier to use in elasticsearch for metrics or ranges too.

    If you end up doing high volume log parsing avoiding regex's that are going to fail can help with performance."

    ReplyDelete

Post a Comment

Popular posts from this blog

Learning through failure - a keyboard creation journey

Image
tl;dr Built a custom keyboard cuz I have weirdo nerve pain issues.   Learned a lot cuz I failed a lot.   Maybe 'do it right the first time' is a bad frame of mind.   The keyboard ended up being kinda nifty.   It has lights, and a trackball, and QMK, and it helps my issues.   \o/ ( tl;dr is internet lingo that means, too long; didn't read ) Pain as a key ingredient An old proverb says, 'necessity is the mother of invention', and that is how this story begins. Over the last few years, age or stress or something has caught up with me and I developed the need to change my human-to-computer interface.  Mousing changed to trackballing.  The traditional keyboard was swapped out for an ergonomic, and then split keyboard.  Complicated multi-finger-and-hand key combinations were replaced by single keypress macros.  And yet more was still needed. It's often said that change only happens with pain - indeed, the organizations many of us work in seem to apply this as law - an
Read more

Learning Opportunities - Watching/listening list

Over the last year I've spent a lot of time learning (thank you, long commute & lunch hours).  Many topics ranging from Chef to DevOps to architecture concepts to management concepts and everything in between.  Why have I done this? DevOps Demystified with Ben Rockwood: https://www.youtube.com/watch?v=h5E--QSBVBY DevOps at ancestry.com: https://www.youtube.com/watch?v=pF5ya0q53kk Those two presentations were key in sending me down this road.  First, and most important, was Mr. Rockwood's explanation as to the real 'why', and the point behind DevOps from an operational perspective.  Second, and no less important but for a different reason, the continuous delivery system at ancestry.com really made it real to me because they are a 'Windows shop'.  So much of what I'd been reading about Chef/config mgmt. relied on amazing tools (see the error there?) only available to the Linux world.  Suddenly here's this guy telling me that it's possible on
Read more

DFSR - eventid 4312 - replication just won't work

This warning isn't documented that well on the googles, so here's some google fodder: You are trying to set up replication for a DFS folder (no existing replication) Source server is 2008R2, 'branch office' server is 2012R2 (I'm moving all our infra to 2012R2) You have no issues getting replication configured You see the DFSR folders get created on the other end, but nothing stages Finally you get EventID 4312: The DFS Replication service failed to get folder information when walking the file system on a journal wrap or loss recovery due to repeated sharing violations encountered on a folder. The service cannot replicate the folder and files in that folder until the sharing violation is resolved.    Additional Information:  Folder: F:\Users$\user.name\Desktop\Random Folder Name\  Replicated Folder Root: F:\Users$  File ID: {00000000-0000-0000-0000-000000000000}-v0  Replicated Folder Name: Users  Replicated Folder ID: 33F0449D-5E67-4DA1-99A
Read more