Quick and Dirty: Install and setup Elasticsearch, Logstash, and Kibana

Quick and Dirty: Install and setup Elasticsearch, Logstash, and Kibana

First you obviously need to download all of the packages. You can get them from HERE. Its also a given that you have Apache webserver installed and running.

For me I like to use the TGZ files. Im kinda funny about not getting files spread out all over the place and I like to keep them all together so I put all the files into /opt and exploded them there…

tar -zxvf *.tar

I setup my symlinks…

ln -s /opt/elasticsearch-1.1.1 ES
ln -s /opt/logstash-1.4.0 LG
ln -s /opt/kibana-3.0.1 KB

From here you pretty much are customizing your install if you already know what you are wanting to log and track. In my example I was just logging all the log files found in /var/*

First I configured a conf file for LG and ES. Here im just telling LG to log all the *log files it finds under /var/* Im doing this as root and this is just on a local vm so im not particularly worried about permissions or security. Just know that you dont want to do it this way in a prod environment.

CONF FILE:  logstash-apache.conf     I created this and put it in /opt/LG/bin/

input {
file {
path => "/var/*/*log"
start_position => beginning
}
}
filter {
if [path] =~ "access" {
mutate { replace => { "type" => "apache_access" } }
grok {
match => { "message" => "%{COMBINEDAPACHELOG}" }
}
}
date {
match => [ "timestamp" , "dd/MMM/yyyy:HH:mm:ss Z" ]
}
}
output {
elasticsearch {
host => localhost
}
stdout { codec => rubydebug }
}

For more info on that conf file check out the Logstash tutorial here.

Now you want to copy everything that’s in the /opt/KB/ dir into a dir in your webserver. For me…

cp /opt/KB/* /var/www/html/

You will then need to edit a file. Open “config.js” and find the line that says “elasticsearch:” This is the location of your webserver. Since mine is locally hosted on a VM, mine reads:

elasticsearch: “http://localhost.localdomain:9200”,

From here you are ready to start things up. First start Elasticsearch, then Logstash and then we will fire up Kibana.

/opt/ES/bin/elasticsearch
/opt/LG/bin/logstash -f logstash-apache.conf

Then in your browser go to: http://localhost.localdomain:9200

You should now be looking at the default Kibana page. It will have some further info on getting started and how to change your default startup page in Kibana.

 

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RUNIT and the ruby syntax error

Ive been working on writing my own cookbook to standup a fully ready to run ELK (Elasticsearch,Logstash,Kibana) server on CentOS. In doing this I have run into a few minor issues of compatibility here and there but nothing major. Once thing that I did find that was particularly troublesome was an error when I was trying to knife up a cookbook for “runit”. Its one of the dependancies for the chef-kibana cookbook and it relys on the “yum-epel” cookbook. I was able to knife up the yum-epel cookbook just fine but when I tried the runit cookbook I hot an error that said:

[seth@localhost cookbooks]$ knife cookbook upload runit yum-epel
Uploading runit [1.5.10]
FATAL: Cookbook file test/spec/libraries/provider_runit_service_spec.rb has a ruby syntax error:
FATAL: /home/seth/chef/chef-repo/.chef/../cookbooks/runit/test/spec/libraries/provider_runit_service_spec.rb:62: syntax error, unexpected '}', expecting tASSOC
FATAL: { provider.load_current_resource }.should raise_error
FATAL:                                                                          ^

My first mistake was installing and using RVM for Ruby management from way before I installed Chef. RVM is too big and robust and handles too many things to try and make it play nice and only worry about managing ruby for me. I uninstalled that and went with RBENV. This is the recommended manager of Ruby from Chef anyways. Once I got rbenv setup and installed I installed ruby 1.9.3p545. I tried again with the knife upload and I still got the same thing. I decided that maybe my version of Chef needed to be updated. I was on 11.2. I reinstalled Chef and tried the knife again. No luck. Same error…thanks for playing, try again.

Now I take to Google to see if this is something unique to me or have I found some bug somewhere. I came across this page and even though it was a year old it did help me out some. https://github.com/rcbops/chef-cookbooks/issues/352 The fix came to me when I re-downloaded the runit cookbook from https://github.com/hw-cookbooks/runit instead of using the cookbook I downloaded directly from Chef Community. For some reason the version was off by one iteration.

[seth@localhost cookbooks]$ knife cookbook upload runit
Uploading runit [1.5.11]
Uploaded 1 cookbook.

Success. Theres not really a better explanation as to what really was wrong here but I do feel it had more to do with the ruby installation than anything else. If you come across this and figure something out please feel free to leave a comment below.