For the last few days I’ve been taking at crack at using the recent Docker container deployment tool that I’ve been hearing a lot buzz about. In essence, it’s a wrapper on top of Linux LXC containers, writen in the new friendly and not so popular yet Go language developed at Google. Just a little bit of background, for those of you not familiar with LXC containers, they are pretty much defined as chroot on steroids. [Read More]

This posts describes how to create a simple Ansible task on how to setup PaperTrail on Ubuntu. It’s a follow up to a previous blog describing an Ansible Playbook to setup an HAProxy system. This Ansible task can be included in the HAProxy playbook as well as any other playbooks with something like this: --- PLAYBOOK: Install papertrail on Ubuntu --- - name: scout hosts: all user: <user-with-sudo> sudo: True tasks: - include: tasks/papertrail. [Read More]

In this post I’ll describe how to create a simple AWS CloudFormation template so that we can deploy stack using multiple AWS accounts. In other words a common JSON CloudFormation template that can be use to bring up a stack in multiple accounts. The way we are able to do this is by having exact copies of the EC2 AMIs on all the accounts and regions where we are deploying our stack. [Read More]

This is a sample Ansible task (http://www.ansibleworks.com) on how to setup Scout (https://www.scoutapp.com) on Ubuntu. It needs to be included in an ansible playbook. It’s a follow up to a previous [blog]({% post_url 2013-10-21-how-to-create-an-ansible-playbook-to-configure-haproxy %}) describing an Ansible Playbook to setup an HAProxy system. This Ansible task can be included in the HAProxy playbook as well as any other playbooks with something like this: --- PLAYBOOK: Install scout on Ubuntu --- - name: scout hosts: all user: user-with-sudo sudo: True vars: scout_key: YourScoutAPIKeyFromTheirWebsite tasks: - include: tasks/scout. [Read More]

So after installing ChrUbuntu on my Acer C7 Chromebook, I’m very pleased that with the help of this blog I was able to upgrade the Linux Kernel to 3.8.11 raravena@chromebook:~/git/blog-src$ uname -a Linux chromebook 3.8.11 #3 SMP Thu Oct 17 07:41:20 PDT 2013 x86_64 x86_64 x86_64 GNU/Linux These are the modified steps: #!/bin/bash set -x # # Grab verified boot utilities from ChromeOS. # mkdir -p /usr/share/vboot mount -o ro /dev/sda3 /mnt cp /mnt/usr/bin/vbutil_* /usr/bin mkdir -p /usr/bin/old_bins cp /mnt/usr/bin/old_bins/vbutil_* /usr/bin/old_bins/. [Read More]

This is the continuation for Setup a simple HAproxy config It explains how to create an Ansible playbook to automate the haproxy configuration. If you’d like to find out more about Ansible you can read up on it on their website: http://www.ansible.com --- # Set up and configure an HaProxy server (Ubuntu flavor) - name: haproxy hosts: all user: userwithsudoaccess sudo: True tags: haproxy vars_files: - "vars/main.yml" tasks: # haproxy package for Ubuntu - include: tasks/haproxy-apt. [Read More]

Here’s simple haproxy configuration to get you started, you probably want to stick this under /etc/haproxy/haproxy.cfg global log 127.0.0.1 local0 log 127.0.0.1 local1 notice maxconn 4096 user haproxy group haproxy daemon defaults log global mode http option httplog option dontlognull retries 3 option redispatch maxconn 4096 contimeout 5000 clitimeout 50000 srvtimeout 50000 stats enable stats auth admin:password stats uri /monitor stats refresh 5s option httpchk GET /status retries 5 option redispatch errorfile 503 /etc/haproxy/errors/503. [Read More]