brasey

ownCloud on Raspberry Pi running Pidora

The what you say?

I won a Raspberry Pi at the IBM booth at DevOps Enterprise Summit 2014!

Raspberry Pi is awesome and delicious. What's not to love about a $35 computer the size of a deck of cards?

I've been using a Pi for some time now connected to an external drive that acts as my backup server. I use duplicity to SSH files to the Pi storage. Simple, easy and effective. It's been working great for years, but lately I've been wanting something more modern, something that I can use to both store files and retrieve them easily, from computers and phones. You know, like Dropbox.

brasey

Webcam stops working on Fedora 20

Tech stack

• Dell XPS 12
• Fedora 20
• Google Chrome 38.0.2125.111 (64-bit) or
• Cheese or

brasey

Too many authentication failures for username

The problem

I was getting this error when trying to SSH to a brand new CentOS 7 VM I was setting up. I hadn't even done anything yet, so I was confused until I realized I had hit the 'MaxAuthTries' limit configred in /etc/ssh/sshd_config on the VM by issuing a single command.

I have a few (ok, 9) SSH keys in my ~/.ssh directory. When you issue an SSH connection request without specifying which key to use via the -i option, SSH tries to use each key.

The default MaxAuthTries value on a CentOS 7 box is 6.

brasey

Where to put files on a Linux system

How did I only just find this?

man hier

brasey

Remove Windows carriage returns

With vim, all you need is

:e ++ff=dos

brasey

Keybase proof

I hereby claim:

• I am brasey on github.
• I am brasey (https://keybase.io/brasey) on keybase.
• I have a public key ASDqRt6NR7lb_461Qc5Uf3BQsgR72kIJ8xW80-8c_SgDfAo

To claim this, I am signing this object:

brasey

Use AWS CLI and jq to do some things

I'm just getting up to speed on AWS, and so I'm learning my way around the CLI. It's nice and easy to do lots of things from the CLI, like querying, creating and destroying instances and images. There are lots of fiddly bits involved in parsing output so it can be used by a script or something, though, so here are some notes.

Tools

AWS CLI

Obviously you need the AWS CLI. It's an easy install using pip. Go here to find documentation and other install methods.

brasey

Install VMware Workstation on Linux 3.19 kernel

VMware Workstation fails to install on 3.19 kernel. Luckily, VMware is on the ball. Just need to patch and compile to make it work.

Arch Wiki

Copypasta:

Since 3.19 kernel the vmnet module will fail to build.

brasey

HAProxy behind AWS ELB: how to force HTTPS?

What are you trying to solve

You have some nodes in AWS that you want to load balance.

You want to use the magical scaling properties of ELB.

You want to do some things that ELB doesn't do, like force HTTPS (or add headers, or something else).

brasey

Masterless Puppet using a Puppetfile

The problem

When running Puppet in masterless mode, meaning there is no Puppet Master for the node to connect to, one of the problems you have to solve is how to get all your Puppet modules onto the node. Without going into all the possible ways of doing this, one nice and clean way to solve the problem is to use a Puppetfile.

If you know what a Ruby gemfile is, you can guess what a Puppetfile is. If you don't, think of a very simple list declaring the modules that a node should get, including ways to get those modules. Like this:

forge 'forge.puppetlabs.com'