geekism and nerdism

Bookmarks for 23 giu 2015 through 17 lug 2015

These are my links for 23 giu 2015 through 17 lug 2015:

Bookmarks for 16 giu 2015 through 19 giu 2015

These are my links for 16 giu 2015 through 19 giu 2015:

  • 10 Things You Should Know About AWS – High Scalability – – Ahead of the upcoming 2nd annual re:Invent conference, inspired by Simone Brunozzi’s recent presentation at an AWS Meetup in San Francisco, and collected from a few of my recent Fluxcapacitor.com consulting engagements, I’ve compiled a list of 10 useful time and clock-tick saving tips about AWS.
  • IT Landscape for sysadmins –
  • MonitoringScape – The past decade has seen a dramatic shift in how we build applications: clouds, containers and micro-services have displaced the old paradigm of static, monolithic infrastructure. The need for operational visibility has grown tenfold. Thankfully, the monitoring landscape has kept up with the times. We now have a choice of over 100 monitoring tools that provide excellent visibility to every nook and cranny of our IT stack. The modern monitoring landscape has something for everyone: on-prem installations, SaaS applications, open-source tools and high-priced enterprise monitoring suites. However, with so many tools to choose from, the monitoring landscape can be difficult to navigate. MonitoringScape is your guide to the new, exciting world of modern monitoring. Keep in mind that this is a community resource, so your comments and suggestions are very welcome.
  • Provision and Bootstrap AWS instances with Chef – This is continuation of the previous post called Provision with Chef – baby steps. Today we going to talk about the process of bootstrapping instances with Chef used by FastCompany
  • Provision machines with AWS – custom bootsrapper – […] Now I will tell a little more about our instance bootstrap process. Basically at the end of the previous post we discussed tree possible options for automated machine startup: Create different AMI for each server role. Install all binaries into one ami an provide a way to load dynamic configs parts through some custom bootstrap script. Use infrastructure automation framework like Chef or Puppet, which could handle installs and configuration for you. […] [ Note: the article is pre chef-provisioning tool ]

Bookmarks for 15 giu 2015 through 16 giu 2015

These are my links for 15 giu 2015 through 16 giu 2015:

Bookmarks for 10 giu 2015 through 15 giu 2015

These are my links for 10 giu 2015 through 15 giu 2015:

  • coderwall.com : establishing geek cred since 1305712800 – Setting up an EC2 instance on AWS used to be as straightforward as provisioning a machine and SSHing into it. However, this process has become a bit more complicated now that Amazon VPC has become the standard for managing machines in the cloud.
  • Set up public and private subnets using AWS VPC — Mike Melnicki’s Blog – This is a step-by-step guide on how to set up public and private subnets for running a service on an internal network within AWS. This guide will also set up a bastion host (or jump host) and show you how you can easily ssh in to the hosts within your private subnet via the bastion host. All of this stuff can be done via the AWS web console, but I thought it would be helpful to show the specific commands and provide some commentary about what is happening on each step.
  • WordPress Checklist (Infographic): 101 Easy Steps to Follow. – It’s a big struggle in remembering the steps involved in setting up a WordPress website. And we soon realized that, there were hardly any checklists that covered all the aspects of WordPress together! That’s when we decided to create “Killer WordPress Checklist” that would cover everything from the pre-launch directions and development process, to SEO, maintenance and security. Honestly, this checklist has worked wonders for us and hope it does for you too!
  • Monitoring EC2 Memory and Disk Usage In CloudWatch Using Custom Metrics | Celingest Blog – Feel the Cloud – With CloudWatch we can track and monitor a lot of metrics across many AWS’s products and set alarms when certain conditions are met. When these alarms are triggered, they can notify us or automate actions such as shrinking or increasing an AutoScaling Group capacity. CloudWatch knows a lot about our EC2 instances’ at the hardware level but it lacks the software’s point of view. In this post we will explain how to use CloudWatch to monitor important resources it can’t monitor by default.

Bookmarks for 29 mag 2015 through 10 giu 2015

These are my links for 29 mag 2015 through 10 giu 2015:

  • My Blog: AWS EC2 Auto Scaling: Basic Configuration – Our goal: Create an Auto Scaling EC2 Group in a single Availability Zone and use a HTTP status page as a Health Monitor for our Load Balancer and the Auto Scaling group instances. This exercise will show us some Auto Scaling basics and will be useful to understand the concepts beneath but the Auto Scaling Group will not automatically "scale" responding to external influence like Average CPU Usage or Total Apache Connections (This aspect is covered in this post: AWS EC2 Auto Scaling: External CloudWatch Metric). With the Auto Scaling configuration described here, we will obtain a web server cluster that can be increased and decreased in members with a simple Auto Scaling API call and we will transfer the monitoring role to the ELB to automatically replace failed EC2 instances or web servers.
  • Autoscaling with custom metrics « That’s Geeky – One of the appeals of cloud computing is the idea of using what you need when you need. One of the ways that Amazon provides for this is through autoscaling. In essence, this allows you to vary the number of (related) running instances according to some metric that is being tracked. In this article, we look at how you can trigger a change in the number of running instances using a custom Cloudwatch metric – including the setup of said metric, and a brief look at the interactions between the various autoscaling commands used.
  • Painless AWS Auto Scaling With EBS Snapshots And Capistrano – Boom – AWS (Amazon Web Services) auto scaling is a simple concept on the surface: You get an AMI, set up rules, and the load balancer takes care of the rest. However, actually getting it done is more complicated. Some choices are worse than others: you could bake an AMI (Amazon Machine Image) before you deploy, but that could add 10 minutes or more to each deployment. Some are dangerous: you could create an AMI after each deploy, but you run the risk that an auto scale even happens before your AMIs are done. Plus, you have a whole variety of AMIs deployed in at any given time. Some are similar to what we propose in this tutorial: you could push your code to S3 on each deploy and have user-data scripts that pull it down on each auto scaling event. However you slice it, to get auto scaling to fit into your development work flow in a transparent way takes careful thought and planning. We recently rolled out the following solution at CodePen. It keeps our AMIs static and our application ready for scaling on EBS (Elastic Block Store) snapshots. We can push code using Capistrano and let a few scripts distribute the ever-changing code base to our fleet of servers. I’d like to share the steps required to make it work. This series of posts will walk you through the steps required to build an auto-scaling infrastructure that stays out of your way.
  • coderwall.com : establishing geek cred since 1305712800 – Did you accidentally set node.normal[:foo][:bar] = 'something bad' in your chef recipe? Then you found that the node's normal attributes persisted between chef runs, and you really wanted to use the default attribute precedence level in your cookbook's attributes/default.rb file?

Bookmarks for 22 mag 2015 through 29 mag 2015

These are my links for 22 mag 2015 through 29 mag 2015:

  • Reducing PDF file-size in Linux | The Road to Elysium – The other day I downloaded a PDF that ended up being a whole lot bigger than I thought. A “whopping” 230MB, which is another deal compared to the 30MB PDF’s that I’m accustomed to. So how to reduce the file-size? Ghostscript to the rescue!
  • Automate tmux sessions with tmuxinator – For those of us who spend a lot of time at a terminal, tmux is almost always part of our standard arsenal of tools. In my quest to make tmux a little more flexible, I came across tmuxinator today.
  • About ShellCheck – ShellCheck is a static analysis and linting tool for sh/bash scripts. It's mainly focused on handling typical beginner and intermediate level syntax errors and pitfalls where the shell just gives a cryptic error message or strange behavior, but it also reports on a few more advanced issues where corner cases can cause delayed failures.

Bookmarks for 18 mag 2015 through 22 mag 2015

These are my links for 18 mag 2015 through 22 mag 2015:

  • kanbanik – Free and open source kanban board – Google Project Hosting – Kanbanik is a free and open source kanban board which can be used for personal kanban as well as for managing of small teams.
  • Kanboard – Simple and open source visual task board – Kanboard is not for everybody, it's made for people who want to manage their projects efficiently and simply.
  • POSHChef/POSHChef · GitHub – POSHChef has been built as a native chef client on Windows using PowerShell. Although support for Windows platforms in Chef is continually expanding the way it is implemented means that developers and system administrators need to understand Ruby in order to correctly write recipes and cookbooks. In addition it is not easy to test any PowerShell code that has been written as it is passed to a Chef recource, which is running under Ruby, and then it is executed using a call to 'powershell.exe'.
  • active directory – Group Policy installation failed error 1274 – Server Fault – I'm trying to deploy an MSI via the Group Policy in Active Directory. But these are the errors I'm getting in the System event log after logging in: The assignment of application XStandard from policy install failed. The error was : %%1274 The removal of the assignment of application XStandard from policy install failed. The error was : %%2

Bookmarks for 15 mag 2015 through 17 mag 2015

These are my links for 15 mag 2015 through 17 mag 2015:

Bookmarks for 12 mag 2015 through 15 mag 2015

These are my links for 12 mag 2015 through 15 mag 2015:

  • slack for ubuntu – ScudCloud is a non official open-source Linux (Debian, Ubuntu, Kubuntu, Mint, Arch) desktop client for Slack©. Slack© is a platform for team communication. ScudCloud uses the QT library + Webkit to render the web version of Slack, but using the QWebkit-Native bridge to improve desktop integration with: multiple teams support, native system notifications, count of unread direct mentions at launcher/sytray icon, alert/wobbling on new messages, channels quicklist (Unity only), optional "Close to Tray".
  • How to create an RPM package – FedoraProject – This page describes in detail how to create an RPM package, and in particular, how to create a SPEC file. Unlike other RPM guides, this page explains the specifics for Fedora with links to Fedora-specific guidelines. Since it is maintained through the Fedora Wiki, it is likely to be more up-to-date than other guides. Despite the focus on Fedora, most of this document does apply to other RPM-based distributions.
  • How To Install Elasticsearch, Logstash, and Kibana 4 on CentOS 7 | DigitalOcean – In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on CentOS 7—that is, Elasticsearch 1.4.4, Logstash 1.5.0, and Kibana 4. We will also show you how to configure it to gather and visualize the syslogs of your systems in a centralized location. Logstash is an open source tool for collecting, parsing, and storing logs for future use. Kibana 4 is a web interface that can be used to search and view the logs that Logstash has indexed. Both of these tools are based on Elasticsearch.

Bookmarks for 1 mag 2015 through 12 mag 2015

These are my links for 1 mag 2015 through 12 mag 2015: