Add user to sudoers (RHEL)
$ sudo su
# adduser iwadmin
# passwd <password>
# usermod -aG wheel iwadmin
# vi /etc/sudoers
[...add this line after root line:...]
iwadmin ALL=(ALL) ALL
@ Kloud Office
Kloud Office on Elizabeth St/Collins St
Reboot an AWS EC2 Instance (Python)
from __future__ import print_function
import sys
import boto3
from botocore.exceptions import ClientError
boto3.setup_default_session(profile_name='default')
instance_id = 'i-094cf9bbbea2bdfbd' #sys.argv[2]
#action = sys.argv[1].upper()
ec2 = boto3.client('ec2')
# Do a dryrun first to verify permissions
try:
ec2.start_instances(InstanceIds=[instance_id], DryRun=True)
except ClientError as e:
if 'DryRunOperation' not in str(e):
raise
# Dry run succeeded, run start_instances without dryrun
try:
response = ec2.start_instances(InstanceIds=[instance_id], DryRun=False)
print(response)
except ClientError as e:
print(e)
Chef Cheatsheet
Download all cookbooks
$ cd ~/chef-repo
$ knife download cookbooks
Download all roles
$ cd ~/chef-repo
$ knife download roles
Download Specific Cookbook
$ knife download cookbooks/cert-QValent\* --cookbook-version 0.1.0
Creating cookbook
$ cd ~/chef-repo
$ knife cookbook create newrelic-config /OR/ cd cookbooks; chef generate cookbook newrelic-config
$ cd cookbooks/newrelic-config/recipes
$ touch update_config.rb
$notepad update_config.rb
[...Author Recipe.....]
Upload cookbook
$ cd ~\chef-repo
$ ruby -c .\cookbooks\cert-QValent\recipes\qvalent-bit.rb
$ foodcritic .\cookbooks\trendMicro\recipes\*
$ knife cookbook test newrelic-config
$ knife cookbook upload newrelic-config
Modify role and include new recipe
$ vim .\roles\portalapps.json
>> "recipe[newrelic-config::update_config]"
Upload Role
$ knife upload .\roles\portalapps.json
Assign Role to Nodes
$ knife node list
$ knife node edit sit9-portalapps-ip-0a9a1670
Download cookbook from supermarket
$ knife cookbook site download
Vagrant Cheatsheet
Setting up new system
-Install VirtualBox
-Install Vagrant
- $ vagrant plugin install vagrant-vbguest
- $ vagrant box add hashicorp/precise64 (centos/7)
-Create Vagrantfile (see below)
- $ vagrant up
Debuggin issues
$ set VAGRANT_LOG=info
$ vagrant up
Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "public_network"
end
Set regional settings to Australia (Powershell)
# Script to configure language settings for each user
#Write settings to reg key for all users who logon to machine
#$RegKeyPath = "HKU:\Control Panel\International"
# Import 'International' module to Powershell session
Import-Module International
#Set Location to Australia
Set-WinSystemLocale en-AU
Set-WinHomeLocation -GeoId 0xC
# Set regional format (datetime etc.) to English (Australia) - this applies to all users
Set-Culture en-AU
# Check language list for non-US input languages, exit if found
#$currentlist = Get-WinUserLanguageList
#$currentlist ForEach-Object {if(($_.LanguageTag -ne en-AU) -and ($_.LanguageTag -ne en-US)){exit}}
# Set the language list for the user, forcing English (Australia) to be the only language
Set-WinUserLanguageList en-AU -Force
Set-WinCultureFromLanguageListOptOut 0
