djvdorp

BOSH command line interface cheatsheet

Introduction

BOSH is a powerful tool to install and manage your deployments. You can find docs on https://bosh.io/docs. Consider using bosh-init tool to install to a cloud of your choice MicroBOSH instance (MicroBOSH is a single VM BOSH installation, it has everything that you need to deploy and manage).

Installing of BOSH CLI

BOSH command line interface is implemented as a ruby gem and can be run on every platform that supports ruby, you'll need to have ruby 2.1.x or higher to run it. To install it you can run gem install bosh_cli and gem update bosh_cli to update to a newer version.

djvdorp

#!/usr/bin/env bash

#copy this in a folder from path ex: /usr/local/bin
#usage: docker-machine-rename default my-default

OLD_MACHINE_NAME=${1:-default};
NEW_MACHINE_NAME=${2:-my-default-2};
STORE_PATH=`docker-machine inspect $OLD_MACHINE_NAME | grep -m 1 StorePath | cut -d ':' -f 2 | cut -c 3- | rev | cut -c 3- | rev`;
mv "$STORE_PATH/machines/$OLD_MACHINE_NAME" "$STORE_PATH/machines/$NEW_MACHINE_NAME";
cp "$STORE_PATH/machines/$NEW_MACHINE_NAME/config.json" "$STORE_PATH/machines/$NEW_MACHINE_NAME/config.json.bak"

djvdorp

package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

djvdorp

[Unit]
Description=memcached daemon for %i
After=network.target

[Service]
ExecStart=/usr/share/memcached/scripts/systemd-memcached-wrapper /etc/memcached_%i.conf

[Install]
WantedBy=multi-user.target

djvdorp

How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

There are two main modes to run the Let's Encrypt client (called Certbot):

• Standalone: replaces the webserver to respond to ACME challenges
• Webroot: needs your webserver to serve challenges from a known folder.

Webroot is better because it doesn't need to replace Nginx (to bind to port 80).

In the following, we're setting up mydomain.com. HTML is served from /var/www/mydomain, and challenges are served from /var/www/letsencrypt.

djvdorp

##Domain

We need some records on our domain (mydomain.com) DNS for connections. Add these records:

t1              IN      NS      t1ns.mydomain.com. ; note final the dot!
t1ns            IN      A       OUR_SERVER_IP

##Server

djvdorp

# Modify this file accordingly for your specific requirement.
# http://www.thegeekstuff.com
# 1. Delete all existing rules
iptables -F

# 2. Set default chain policies
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP

djvdorp

#!/bin/bash
## Obserivum Client Setup Script
## v.0.5 - 12/15/13 - [email protected]
## Tested on Debian 6/7 & Ubuntu 12.04+ - CentOS 5.8/6.4
## Useage: ./observium-client.sh <Community> <Contact Email>
## check if root
if [ $(whoami) != "root" ]; then
        echo "You need to run this script as root."
        echo "Use 'sudo ./observium-client.sh' then enter your password when prompted."
        exit 1

djvdorp

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    # Redirect all HTTP requests to HTTPS with a 301 Moved Permanently response.
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;

djvdorp

[clever@amd-nixos:~/apps/nixpkgs]$ git remote -v
channels        [email protected]:NixOS/nixpkgs-channels.git (fetch)
channels        [email protected]:NixOS/nixpkgs-channels.git (push)
origin  [email protected]:NixOS/nixpkgs.git (fetch)
origin  [email protected]:NixOS/nixpkgs.git (push)
[clever@amd-nixos:~/apps/nixpkgs]$ git fetch channels
   8512747..adfcc2d  nixos-unstable -> channels/nixos-unstable
[clever@amd-nixos:~/apps/nixpkgs]$ git checkout channels/nixos-unstable
M       nixos/lib/make-squashfs.nix
M       pkgs/top-level/platforms.nix