Jaime Gago Condensing Information Systems From the Vapor Of Data


Scaled Out AWS Graphite Federated Cluster

I've hit the limit of "my" AWS Graphite single server install (i2.xl) and I needed to come upScreen Shot 2015-05-07 at 10.04.48 PM with a scaled out design. I'm really looking forward to Jason Dixon Graphite's book, but can't wait for it so I went down the interwebs rabbit hole  (1234567). This is what I've come up with for my needs, maybe this helps somebody else out there, also hoping for feedback from the community.


Create MCollective plugin native OS packages with…MCollective!

Today I wanted to install the MCollective Process Agent plugin and so I searched to no luck for a native OS package for ubuntu (ended up filling a 500px-Panneau_marionette.svgticket with puppetlabs). I was on my way to do some effing package making  but some guy on IRC ("rc" you know who you are ^^ ) saved me a lot of time with a single mco command. It turns out MCollective can create native os packages for its plugins, and since I haven't found any doc on the topic I thought I document it here.


Jenkins CI behind Apache Httpd mod_proxy +Virtual Host config

 All relevant info is here but if you're looking for a combo Apache httpd Vhost (name based) + proxy to put your Jenkins server at say "mybuilding.server.org" here is one that work (assuming you have DNS "stuff" set properly of course)


NameVirtualHost *:80

<VirtualHost *:80>
ServerName mybuilding.server.org
ProxyPass /
ProxyPassReverse /
ProxyRequests Off
ProxyPreserveHost On

Order deny,allow
Allow from all
</VirtualHost *:80>
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Running Rundeck Behind Apache Using mod_proxy on CentOS/RHEL6

As I just got Rundeck working behind Apache httpd with mod_proxy and since I didn't find  a dedicated tutorial  on the inter webs I thought to make a quick summary. 


Juniper VPN client aka Network Connect on RHEL 6 (x86_64)

Ok this has taken me quite an effort so hopefully it will save you some time.

On my system RHEL 6 (x86_64) this is what it took to have the Juniper VPN client (aka Network Connect) running.


Network Install via PXE and TFTP on RHEL6 (X86_64)

This is a step by step on how I deployed Red Hat Enterprise Linux 6 via PXE and HTTP leveraging exclusively RHEL6.1, my focus will be on the PXE/TFTP-DHCP part as the HTTP based installation is well documented by Red Hat. In terms of hardware I had available 2 DELL Precision 5400 (2 NICs per machine), and an HP Procurve 2824 Switch (yes overkill).


RHEL 6 (X86_64) and Nvidia driver with Geforce 8800 GTS

As I'm preparing for the Red Hat System Administrator certification I thought I would use my old gaming PC so I got an Academic license and installed RHEL6 so I could tinker at home...Oh boy...So far most of the pain has come from issues with my GeForce 8800GTS, or at least that's what I've gathered from the many steps I've been through to get X window and KDE to work.

I'm totally fine with runlevel 3 but a hanging "init 5" was not a satisfactory install and so I spent 2 evenings "google fu'ing" to finally get successfully to runlevel 5.

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Extend Your Server With The DELL C410X

In December 2010 I was at the Stanford HPC Conference where I took a glance at Certainty, it was there that I first heard of the Dell C410X Since then I've gathered as much information as possible on that device, and I thought to assemble it here.

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Resources For Systems Architecture In An Apple Environment

I have been quite busy with my new job the past few months, but I hope to be back to a more active blogging starting with this post!

Since I've recently designed and implemented an HPC/HA system with mostly Apple technologies I thought to share some of the resources I used to achieve that goal.


Automating Os X Server Backups Without 3rd Party Software

There are plenty of different options to backup Os X Server, including free tools like the excellent Mike Bombich’s Carbon Copy Cloner and Open Source ones like lbackup or amanda. Michael Dhaliwal has a pretty good paper that he updates and publishes on his company (i.e. district13 computing) website.

For various reasons not worth listing here I decided to come with my own design while relying exclusively on built in tools (e.g. launchd). I thought this might help other OS X Server Admins so here it is.

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