sczizzo

# Basics

module Chef
  class Resource
    attr_reader :name

    def initialize name
      @name = name
    end

devynspencer

---

hosts: all
tasks:
  - name: add github ssh key
    copy: >
      src=files/id_rsa.github
      dest=/root/.ssh/id_rsa.github
      owner=root
      group=root

lokhman

WARNING

May contain out of date information. Check the comments below!

The list of actions listed below was taken mostly from Book Of Zeus with minor modifications and did the job well for Ubuntu version, which was available at that moment (May 2016). This gist was created for internal use and was never meant to be discovered by the web, although Google managed to find and index this page, which was a great surprise for me. Please check the original source for the updated information (links are provided in most of the sections), and read the comments below: they provide more details about the usage experience.

System Updates

http://bookofzeus.com/harden-ubuntu/initial-setup/system-updates/

Keeping the system updated is vital before starting anything on your system. This will prevent people to use known vulnerabilities to enter in your system.

andreicristianpetcu

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

gwillem

# Add this snippet to the top of your playbook. 
# It will install python2 if missing (but checks first so no expensive repeated apt updates)
# [email protected]

- hosts: all
  gather_facts: False
  
  tasks:
  - name: install python 2
    raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal)

clstokes

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Effect": "Allow",
      "Sid": ""

eferro

AWS Golang SDK examples

ericandrewlewis

top (the UNIX process inspector) cheat sheet

This is a list of the most helpful keyboard commands I use within top.

The basics

h shows help on interactive commands. Also see the top manual page

q to quit the program.

rajankur

Making an Amazon EBS Volume Available for Use

• Right click newly created volume and attach to your instance.
• Reboot EC2.
• sudo file -s /dev/xvdb (where xvdb is the name of the volume)
• if the above command shows data for the device, there is no file system on the device and you need to create one.
• Make filesystem using sudo mkfs -t ext4 /dev/xvdb.
• Create a mount point directory for the volume using sudo mkdir mount_point (sudo mkdir /data)
• Mount the volume at the location: sudo mount device_name mount_point i.e. sudo mount /dev/xvdb /data
• To mount this EBS volume on every system reboot, add an entry for the device to /etc/fstab file

atrepca

[Unit]
Description=Apache Kafka server (broker)
Documentation=http://kafka.apache.org/documentation.html
Requires=network.target remote-fs.target
After=network.target remote-fs.target

[Service]
Type=simple
PIDFile=/var/run/kafka.pid
User=kafka