DanyC97

# ------------------------------------
# Docker alias and function
# ------------------------------------

# Get latest container ID
alias dl="docker ps -l -q"

# Get container process
alias dps="docker ps"

DanyC97

apiVersion: v1
kind: ServiceAccount
metadata:
  name: foo-sa
  namespace: foo
---
kind: SecurityContextConstraints
apiVersion: v1
metadata:
  annotations:

DanyC97

oc get po glusterblock-storage-provisioner-dc-1-864g5 -o yaml
apiVersion: v1
kind: Pod
metadata:
  annotations:
    kubernetes.io/created-by: |
      {"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicationController","namespace":"glusterfs","name":"glusterblock-storage-provisioner-dc-1","uid":"4a94ebd4-4402-11e8-8ea9-005056a2d8cc","apiVersion":"v1","resourceVersion":"18370005"}}
    openshift.io/deployment-config.latest-version: "1"
    openshift.io/deployment-config.name: glusterblock-storage-provisioner-dc
    openshift.io/deployment.name: glusterblock-storage-provisioner-dc-1

DanyC97

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

DanyC97

AWS CloudFormation YAML template - appending to list parameter types

Documenting this here, as I often forget (what I have found) is the best way to do this at the moment.

For example, you have a list of two existing security groups given to a stack and wish to create (and use) a third - attaching all to an ALB:

AWSTemplateFormatVersion: "2010-09-09"
Description: "Example template"

Parameters:

DanyC97

Libvirt

yum group install -y "Development Tools"
yum -y install qemu-kvm libvirt virt-install bridge-utils libvirt-devel  libxslt-devel libxml2-devel libvirt-devel libguestfs-tools-c

echo "net.ipv4.ip_forward = 1"|sudo tee /etc/sysctl.d/99-ipforward.conf
sysctl -p /etc/sysctl.d/99-ipforward.conf

DanyC97

Tabs and Windows

Function	Shortcut
Fullscreen	⌘+ Enter
Previous Tab	⌘+ Left Arrow
Next Tab	⌘+ Right Arrow
Go to Tab	⌘ + Number
Go to Window	⌘ + Option + Number
Go to Split Pane by Direction	⌘ + Option + Arrow

DanyC97

Generating CloudFormation Templates from YAML Dictionaries

The security group and Network ACLs parts of CloudFormation templates can be difficult to read. This template containing Jinja macros converts easier-to-read YAML dictionaries of security group and NACL rules into JSON.

Here ais a generic macro template and some example files showing how to use it.

• cloudformation.macros.j2 - the macros
• cf_vars.yml - YAML dictionaly of security groups and NACLs, including some complex rules for both
• test.template.j2 - a simple CloudFormation template that uses the macro file
• cf_test.yml - a simple Ansible playbook that generates CloudFormation JSON from thr previous file.

DanyC97

Keybase proof

I hereby claim:

• I am DanyC97 on github.
• I am danyc97 (https://keybase.io/danyc97) on keybase.
• I have a public key whose fingerprint is 9877 6060 14EA 006E A062 22A2 19C5 1144 19FC 78AD

To claim this, I am signing this object:

DanyC97

# shortform git commands
alias g='git'

# pretty tab'd git log
git log --graph --pretty="tformat:%h*(%ar)*<%an>*%d %s" $* | sed -Ee 's/(^[^<]*) ago\)/\1)/' | sed -Ee 's/(^[^<]*), [[:digit:]]+ .*months?\)/\1)/' | column -s '*' -t | cat

# change author of all git repos
git filter-branch -f --env-filter "GIT_AUTHOR_NAME='yourname'; GIT_AUTHOR_EMAIL='youremail@example.com'; GIT_COMMITTER_NAME='yourname'; GIT_COMMITTER_EMAIL='youremail@example.com';" HEAD;

# stage only deleted files