John Jardine's blog

Learning Terraform and AWS: Load Balancers, Target Groups, Security Groups and Launch Configurations

This is an incomplete entry. This is turning out to be a little more complex than I originally thought and rather than delay the publication further I will “publish what I have”. The date and this paragraph will get updated until this part of my series is finalized.

The 3rd part in my Virtual Private Cloud with Terraform series of posts.

Hopefully you've read part 1 and part 2 of this series. Thus far I have created a VPC and defined two sets of sub-nets to implement our application on, assigned Route Tables and Default Routes to the sub-nets and created NAT Gateways to separate the Database Servers from the Internet while retaining connectivity to the Internet.

Part 3 is really about configuring AWS so that it manages and scales our solution architecture in response to the demand experienced.

Learning Terraform and AWS: Configuring Routing & Gateways

The 2nd part in my Virtual Private Cloud with Terraform series of posts.

Hopefully you've read part 1 of this series. At the end of that post we had created a VPC and defined two sets of sub-nets to implement our application on.

This entry will create the routing tables, Internet gateways and security groups needed to access our VPC from the outside world and how the internal sub-nets can communicate with each other.

Learning Terraform and AWS: Tool installation and VPC & Subnet Creation

The cool thing about a tech career is that the tech never stands still. I've been working in telecom for over 20 years. As an industry that domain has been significantly automated over those years. I did a fair bit of that automation myself! Now I find myself looking for fresh challenges and that requires a new set of skills using a new set of tools.

Script updates for DLink DDNS

This describes how to setup a Linux box to automatically update the DLink Dynamic DNS facility.

Designing a breakout board for the TCM8240

2013.05.23: Warning: This is an Alpha revision design. I am currently waiting for the PCBs and will update this post with (electrical) test results when the boards arrive.

To help me with the overall design of a custom PCB for my HSIS project I designed a TCM8240 breakout board.

gEDA Schematic:
Gerber zip:

29C3 - My first CCC

Greetings from Hamburg!

I have wanted to go to CCC for years, and this year I got my chance!

Nexus7, Android 4.2 and OpenVPN 2

I needed a way to get "road-warrior" remote access to my network resources and SSH wasn't doing everything I needed, it was time to setup a VPN. It's a common problem and there is a common solution. During my VPN configuration I was all over the Internet pulling in parts of the solution so I thought I'd wrap it all up in one place. This is a solution for my problem, yours may be different.

Commenting is enabled

I bit the bullet, wiped the userbase, installed a spam filter and enabled commenting.

If this doesn't cause me a crazy amount of extra work I'll leave it enabled, otherwise I'll shut it down.

You'll need an account to comment. Accounts need to be approved individually so there may be a delay between your request and my approve/deny decision.

Configuring a Xyplex 1640 as a terminal server

I have a bunch of networking equipment in my home lab and after a few years I got tired of getting up to move a console cable from one device to the next.

Tweaking OEL 6.3

I setup a VM host with several VMs as a test bed. The VM host is running Slackware 14 RC4, I'll upgrade to 14GA when the DVD arrives. I'm using VMWare Player to create/manage the VMs. The VMWare Guest is configured with Bridged networking giving the guest it's own IP address and allowing other hosts to connect to it. Most of the guest VMs are Oracle Enterprise Linux 6.3 (OEL 6.3) because much of the software I'm testing is from Oracle (Database, Weblogic).

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