ChrisMcKee

Retrieving Docker Image Sizes

There are two metrics that are important to consider when discussing the size of Docker images.

1. Compressed size - This is often referred to as the wire size. This affects how fast/slow images can be pulled from a registry. This impacts the first run experience on machines where images are not cached.
2. Uncompressed size - This is often referred to as the size on disk. This affects how much local storage is required to support your Docker workloads.

The example commands shown below will work on Windows, MacOS, and Linux.

How to Measure the Compressed Size

ChrisMcKee

SELECT nspname || '.' || relname AS "relation",
    pg_size_pretty(pg_relation_size(C.oid)) AS "size"
  FROM pg_class C
  LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
  WHERE nspname NOT IN ('pg_catalog', 'information_schema')
  ORDER BY pg_relation_size(C.oid) DESC
  LIMIT 20;

ChrisMcKee

-- Change [bucket] with your bucket name
exec msdb.dbo.rds_restore_database 
        @restore_db_name='Sitecore_Analytics', 
        @s3_arn_to_restore_from='arn:aws:s3:::[bucket]/Sitecore_Analytics.bak';


exec msdb.dbo.rds_restore_database 
        @restore_db_name='Sitecore_Core', 
        @s3_arn_to_restore_from='arn:aws:s3:::[bucket]/Sitecore_Core.bak';

ChrisMcKee

Get-Project –All | Add-BindingRedirect

# On large projects commands like `Update-Package -Reinstall` can take HOURS
# If the updates are broken up, then don't lock up the IDE and complete much faster (minutes vs hours)

# Reinstall all packages that match a specific targetFramework
# Useful when retargeting
gci -recurse packages.config | % { [xml]$XmlDocument = Get-Content -Path $_.FullName; $XmlDocument.packages.package | ? { $_.targetFramework -eq 'net462' } | select id | sort-object -unique | % { update-package -reinstall $_.id } }

# Reinstall all packages that have been marked with requireReinstallation

ChrisMcKee

Regular Expression to Validate UK Number Plates

Regular Expression

(?<Current>^[A-Z]{2}[0-9]{2}[A-Z]{3}$)|(?<Prefix>^[A-Z][0-9]{1,3}[A-Z]{3}$)|(?<Suffix>^[A-Z]{3}[0-9]{1,3}[A-Z]$)|(?<DatelessLongNumberPrefix>^[0-9]{1,4}[A-Z]{1,2}$)|(?<DatelessShortNumberPrefix>^[0-9]{1,3}[A-Z]{1,3}$)|(?<DatelessLongNumberSuffix>^[A-Z]{1,2}[0-9]{1,4}$)|(?<DatelessShortNumberSufix>^[A-Z]{1,3}[0-9]{1,3}$)|(?<DatelessNorthernIreland>^[A-Z]{1,3}[0-9]{1,4}$)|(?<DiplomaticPlate>^[0-9]{3}[DX]{1}[0-9]{3}$)

For use in JavaScript (with named groups removed):

(^[A-Z]{2}[0-9]{2}\s?[A-Z]{3}$)|(^[A-Z][0-9]{1,3}[A-Z]{3}$)|(^[A-Z]{3}[0-9]{1,3}[A-Z]$)|(^[0-9]{1,4}[A-Z]{1,2}$)|(^[0-9]{1,3}[A-Z]{1,3}$)|(^[A-Z]{1,2}[0-9]{1,4}$)|(^[A-Z]{1,3}[0-9]{1,3}$)|(^[A-Z]{1,3}[0-9]{1,4}$)|(^[0-9]{3}[DX]{1}[0-9]{3}$)

ChrisMcKee

#!/bin/bash
echo "This will generate a new kube config for accessing your RKE-created kubernetes cluster. This script MUST be run on a Kubernetes node."
echo "Please enter the IP of one of your control plane hosts, followed by [ENTER]:"

read cphost

openssl genrsa -out kube-admin.key 2048
openssl req -new -sha256 -key kube-admin.key -subj "/O=system:masters/CN=kube-admin" -out kube-admin.csr
sudo openssl x509 -req -in kube-admin.csr -CA /etc/kubernetes/ssl/kube-ca.pem -CAcreateserial -CAkey /etc/kubernetes/ssl/kube-ca-key.pem -out kube-admin.crt -days 365 -sha256
sudo rm -f /etc/kubernetes/ssl/kube-ca.srl

ChrisMcKee

Deploy kubernetes-dashboard on Rancher 2.0 cluster exposed using NodePort

Requirements

• kubectl (https://kubernetes.io/docs/tasks/tools/install-kubectl/)

Step 1: Generate kubeconfig from the UI

Generate the kubeconfig file for your cluster using the Kubeconfig File button in the Cluster view of your cluster. Save the generated file as $HOME/.kube/config and run kubectl get nodes to verify it works.

ChrisMcKee

What would you need:

• Postgres 9.3, 9.4, 9.5, 9.6 or 10 with cstore_fdw extention (https://github.com/citusdata/cstore_fdw)
• Docker 1.12.6 or higher
• Docker Compose
• Linux machine

Hardware requirements

ChrisMcKee

Param
(
    [parameter(Mandatory=$true)][string]
    $BuildLogPath,

    [parameter(Mandatory=$true)][string]
    $BuildCheckoutDirectoryPath,

    [parameter()][string]
    $BuildArtifactRepositoryUrl

ChrisMcKee

Install Packer

wget https://releases.hashicorp.com/packer/1.2.0/packer_1.2.0_linux_amd64.zip
unzip packer_1.2.0_linux_amd64.zip
sudo mv packer /usr/local/bin/

http://howtoprogram.xyz/2016/11/29/install-packer-ubuntu-16-04-1-lts-xenial-xerus/

Install Vagrant