Krista Mae Rectra krectra

I recently tried out the fantastic vim-tmux-navigator tmux plugin. Unfortunately, some the default key bindings conflict with some of the key bindings my fuzzy finder of choice uses. I wanted to remap them to the default vim split navigation commands that are prefixed with C-w, and found the solution of hjdivad in his gist. However, I wanted a simpler solution, so after some more digging I stumbled upon this reddit post and ultimately came up with the following solution, which doesn't rely on key bindings that unbind themselves, but uses tmux's 'key-tables'.

A collection of The Morning Paper posts relating to containers, operating systems etc.

In order of first appearance in The Morning Paper.

List of Linux networking tools

netstat (ss)

Displays contents of /proc/net files. It works with the Linux Network Subsystem, it will tell you what the status of ports are ie. open, closed, waiting, masquerade connections. It will also display various other things. It has many different options. Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.

Sample output:

Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4 0 0 127.0.0.1.62132 127.0.0.1.http ESTABLISHED

Better SSH Authorized Keys Management

A seemingly common problem that people encounter is how to handle all of your users authorized_keys file.

People struggle over management, ensuring that users only have specific keys in the authorized_keys file or even a method for expiring keys. A centralized key management system could help provide all of this functionality with a little scripting.

One piece of functionality overlooked in OpenSSH is the AuthorizedKeysCommand configuration keyword. This configuration allows you to specify a command that will run during login to retrieve a users public key file from a remote source and perform validation just as if the authorized_keys file was local.

Here is an example directory structure for a set of users with SSH public keys that can be shared out via a web server:

This document is a list with video playlists from recent conferences on DevOps, WebOps, SRE, Systems administration, Monitoring, Building and Scaling Highly available sytems, apps and websites.

Available

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

References from my QCon London 2016 Keynote

The Morning Paper blog

Thinking Tools

AWS Certification notes

Those are my personal notes on AWS Solution Architect certification preparation. Hope you find them usefull.

To pass AWS certification, you should have:

Sound knowledge about most of the AWS services ( EC2, VPC, RDS, Cloudfront, S3, Route53 etc,)
Hands on experience with AWS services.

	from django import forms
	from django.contrib.postgres.fields import ArrayField


	class ChoiceArrayField(ArrayField):
	"""
	A field that allows us to store an array of choices.

	Uses Django 1.9's postgres ArrayField
	and a MultipleChoiceField for its formfield.

	# <type>: (If applied, this commit will...) <subject> (Max 50 char)
	# \|<---- Using a Maximum Of 50 Characters ---->\|


	# Explain why this change is being made
	# \|<---- Try To Limit Each Line to a Maximum Of 72 Characters ---->\|

	# Provide links or keys to any relevant tickets, articles or other resources
	# Example: Github issue #23