tuxfight3r

Docker Cheat Sheet

NOTE: This used to be a gist that continually expanded. It's now a github project because it's considerably easier for other people to edit, fix and expand on Docker using Github. Just click README.md, and then on the "writing pen" icon on the right to edit.

• Why
• Prerequisites
• Installation
• Containers
• Images
• Registry and Repository

tuxfight3r

# good git book
http://git-scm.com/book

# Discard uncommitted changes in a specific file
git checkout file_name

# Clear everything not in repo
git checkout -- .

# A way to quickly move to the previous commit in a git branch. This also way for "deleting" last commit.

tuxfight3r

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

tuxfight3r

# Problem Statement
# Create a class Calculator, which performs addition and subtraction of two numbers at a time.
class Calculator
  def add(a, b)
   a+b
  end

  def subtract(a, b)
   a-b
  end

tuxfight3r

#!/bin/bash

PUBLIC_IP4_IFACE=eth2
LISTEN_IFACE=${PUBLIC_IP4_IFACE}

listen_address=$(ip -f inet addr show dev ${LISTEN_IFACE} | grep -Po 'inet \K[\d.]+')
listen_port=${1}
target_host=${2}
target_port=${3}

tuxfight3r

#!/bin/sh

# This is a skeleton of a bash daemon. To use for yourself, just set the
# daemonName variable and then enter in the commands to run in the doCommands
# function. Modify the variables just below to fit your preference.

daemonName="DAEMON-NAME"

pidDir="."
pidFile="$pidDir/$daemonName.pid"

tuxfight3r

# UPDATED 17 February 2019
# Redirect all HTTP traffic to HTTPS
server {
   listen 80;
   listen [::]:80; 	
   server_name www.domain.com domain.com;
   return 301 https://$host$request_uri;
}

# SSL configuration

tuxfight3r

Kafka Cheat Sheet

Display Topic Information

$ kafka-topics.sh --describe --zookeeper localhost:2181 --topic beacon
Topic:beacon	PartitionCount:6	ReplicationFactor:1	Configs:
	Topic: beacon	Partition: 0	Leader: 1	Replicas: 1	Isr: 1
	Topic: beacon	Partition: 1	Leader: 1	Replicas: 1	Isr: 1

tuxfight3r

curl -s -X GET http://localhost:8080/pdb/query/v4/facts   --data-urlencode query@test --data-urlencode 'pretty=true'

curl -X POST http://localhost:8080/pdb/query/v4/facts \
  -H 'Content-Type:application/json' \
  -d '{"query":["and",["=","certname","FQDN"],["=","name","ipaddress"]]}'

content of file test :

["and",["=","certname","FQDN"],["or",["=","name","ipaddress"]]]

tuxfight3r

#place in /etc/letsencrypt/renewal-hooks/post

export AWS_ACCESS_KEY_ID=XXX
export AWS_SECRET_ACCESS_KEY=XXX
#certs must be in us-east-1 to use with cloudfront
export AWS_DEFAULT_REGION=us-east-1

#run without --certificate-arn first time then specify arn for updates
aws acm import-certificate --certificate file:///etc/letsencrypt/live/site.com/cert.pem --private-key file:///etc/letsencrypt/live/site.com/privkey.pem --certificate-chain file:///etc/letsencrypt/live/site.com/chain.pem  --certificate-arn specifyarnforupdate