pedroamador

apt-get -y autoremove
apt-get clean

# Zero out the free space to save space in the final image:
dd if=/dev/zero of=/EMPTY bs=1M
rm -f /EMPTY

# Removing leftover leases and persistent rules
echo "cleaning up dhcp leases"
rm /var/lib/dhcp/*

pedroamador

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

pedroamador

#!/bin/sh
service rsyslog stop
sed -i -e 's/^\$ModLoad imklog/#\$ModLoad imklog/g' /etc/rsyslog.conf
service rsyslog start

pedroamador

#!/bin/bash
# POSIX

# Credits
# - Forked from soulrebel git-promote gist https://gist.github.com/soulrebel/9c47ee936cfce9dcb725
# - Parse arguments howto http://mywiki.wooledge.org/BashFAQ/035

git_promote="$(basename "$0" | sed -e 's/-/ /')"
HELP="Usage: $git_promote [options...] [upstream] <downstream>

pedroamador

#!/usr/bin/groovy

/*
 * Copyright (c) 2016, Andrey Makeev <amaksoft@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright

pedroamador

#!/bin/bash

# This script will locally construct a merge commit for a pull request on a
# github repository, inspect it, sign it and optionally push it.

# The following temporary branches are created/overwritten and deleted:
# * pull/$PULL/base (the current master we're merging onto)
# * pull/$PULL/head (the current state of the remote pull request)
# * pull/$PULL/merge (github's merge)
# * pull/$PULL/local-merge (our merge)

pedroamador

pipeline {
    agent { node { label 'swarm-ci' } }

    environment {
        TEST_PREFIX = "test-IMAGE"
        TEST_IMAGE = "${env.TEST_PREFIX}:${env.BUILD_NUMBER}"
        TEST_CONTAINER = "${env.TEST_PREFIX}-${env.BUILD_NUMBER}"
        REGISTRY_ADDRESS = "my.registry.address.com"

        SLACK_CHANNEL = "#deployment-notifications"

pedroamador

# zerotier configuration
zerotier:
  image: zerotier/zerotier-containerized:1.2.4
  labels:
    io.rancher.os.scope: system
  volumes:
    - /var/lib/zerotier-one:/var/lib/zerotier-one
  restart: always
  net: host
  devices:

pedroamador

Network Block Device(nbd):
In Linux, a network block device is a device node whose content is provided by a remote machine. Typically, network block devices are used to access a storage device that does not physically reside in the local machine but on a remote one. As an example, the local machine can access a fixed disk that is attached to another computer.

1.start nbd-server to export a qcow2 image with absolute path on the NBD server host.
# nbd-server 12345 /home/my-data-disk.qcow2
2.launch a KVM guest with this exported image as a data disk.
# qemu-img info nbd:10.66.83.171:12345
image: 
file format: qcow2
virtual size: 10G (10737418240 bytes)

pedroamador

#!/bin/bash

# get latest docker compose released tag
COMPOSE_VERSION=$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep 'tag_name' | cut -d\" -f4)

# Install docker-compose
sh -c "curl -L https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose"
chmod +x /usr/local/bin/docker-compose
sh -c "curl -L https://raw.githubusercontent.com/docker/compose/${COMPOSE_VERSION}/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose"