timconradinc

Cluster graphing

• It's frequently useful to graph a metric over a cluster of hosts, e.g. "show me the number of requests/s being handled by all of my load balancers".
• Doing this in vanilla Graphite is easy - it honors both glob expressions (lb*) and brace expressions ({a,b,c,d}).
• But how do we generate these for clusters whose hostnames don't glob well, and/or whose members change over time?

Descartes

• Generally flippin' awesome.
• Has a database of Metrics, Graphs composing 1+ Metrics, and Dashboards composing 1+ Graphs.

timconradinc

<!-- the env variables are controlled by Chef and passed in via -D on the java command-line -->
<!-- This is using the appender here: https://github.com/t0xa/gelfj -->
<appender name="graylog2" class="org.graylog2.log.GelfAppender">
    <param name="graylogHost" value="${graylog.server}"/>
    <param name="originHost" value="${graylog.origin}"/>
    <param name="extractStacktrace" value="true"/>
    <param name="addExtendedInformation" value="true"/>
    <!-- The _web part is because a given app has multiple components -->
    <!-- This app might have a _web as well as an _batch component -->
    <param name="facility" value="${graylog.facility}_web"/>

timconradinc

LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-3.0.11/ext/apache2/mod_passenger.so
PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-3.0.11
PassengerRuby /usr/bin/ruby


<VirtualHost *:80>
    ServerName logs.example.com 
    ServerAlias logs.example.com 
    DocumentRoot /home/httpd/Kibana/public