koolquark

#!/bin/bash

export TKN=$(curl -X POST 'http://localhost:8080/auth/realms/master/protocol/openid-connect/token' \
 -H "Content-Type: application/x-www-form-urlencoded" \
 -d "username=admin" \
 -d 'password=admin' \
 -d 'grant_type=password' \
 -d 'client_id=admin-cli' | jq -r '.access_token')

curl -X GET 'http://localhost:8080/auth/admin/realms' \

koolquark

rd(tst,{name,desc}). 
application:stop(mnesia). 
mnesia:create_schema([node()]). 
application:start(mnesia). 
mnesia:create_table(tsts,
 [{record_name, tst},
 {attributes, record_info(fields, tst)},
 {disc_copies, [node()]},
 {type, set}]).

koolquark

YAML Notes ( 1.2 )

Links and resources

• Spec 1.2 @ http://yaml.org/spec/1.2/spec.html

Overview

• Human readable
• Machine processable
• Minimum structural elements

Basic Primitives

• Scalars (Strings/Numbers)
• Sequences (Arrays/Lists)

koolquark

*.crashdump
_build/*
rebar.lock

koolquark

#!/bin/bash 
# This is not an automated script
# Listing is only for line by line pasting

# Remove any existing installation 
## sudo apt-get remove docker docker-engine docker.io

# For Kernel version > 4 overlay2 storage driver is preferred over aufs
# overlayfs already available in kernel version 4
# See uname -a

koolquark

from datetime import datetime 
now = datetime.now()
print(now.strftime("%Y-%m-%d-%M__%H-%M-%S"))

# >>> from datetime import datetime 
# >>> now = datetime.now()
# >>> print(now.strftime("%Y-%m-%d-%M__%H-%M-%S"))
# 2018-07-07-47__07-47-00
# >>> 

koolquark

Concepts

• Levels of abstraction

  • App In Container (Dockerfile)
  • Services ( docker compose yml )
    • Ports
    • How many replicas of container ?
    • Scaling ?
  • Stack ( Service Interactions ) ( Top Layer )

• Docker

koolquark

Bind Mounting

docker run -itd  --name devtest --mount type=bind,source=/tmp/bm1,target=/app  alpine:latest

koolquark

Docker Image

Docker Image with Erlang and Observer.

Dockerfile

FROM debian:9
ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update                                                            && \
    apt-get install -y --no-install-recommends curl make wget                 && \
                                                                                 \
 wget --no-check-certificate https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb && \

koolquark

# List netwoks
docker network ls

# Prune un-necessary networks 
docker network prune  

# Create a custom bridge network 
# See man docker-network-create 
 docker network create \
                --driver=bridge\