yiays

ProxyJumping

Introduction

ProxyJumping is a method used to get access to a terminal in a private network via SSH.

First, you SSH into a JumpGate (a SSH server exposed to the internet), and then use that JumpGate to pass through a SSH connection to a machine on the JumpGate's local network. By the end of this guide, you should be able to seamlessly connect to a remote private host through a JumpGate with one parameter in a ssh command.

Security should always be paramount when establishing connections like this because the password of a JumpGate can and will be brute-forced by bots on the internet constantly.

Compatiblilty notes

The provided client-side commands are intended for PowerShell. Open PowerShell by right-clicking on the start menu button and selecting Windows Powershell.

brentjanderson

Sometimes it is useful to route traffic through a different machine for testing or development. At work, we have a VPN to a remote facility that we haven't bothered to fix for routing, so the only way to access a certain machine over that VPN is via an SSH tunnel to a machine that is reachable over the VPN. Other times, I have used this technique to test internet-facing requests against sites I am developing. It is pretty easy, and if you don't use firefox regularly, you can treat Firefox as your "Proxy" browser and other browsers can use a normal configuration (Although you can also configure an entire system to use the proxy, other articles exists that discuss this potential).

1. Open a terminal

troyharvey

# Use envFrom to load Secrets and ConfigMaps into environment variables

apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: mans-not-hot
  labels:
    app: mans-not-hot
spec:
  replicas: 1

TomAugspurger

degiere

# Try to get futures working with Zipline

import pytz
import pandas as pd
import matplotlib.pyplot as plt
import Quandl
from zipline.api import *
from zipline.algorithm import TradingAlgorithm
from zipline.finance.trading import TradingEnvironment

pjbull

import os
import re

from nbconvert.nbconvertapp import NbConvertApp
from nbconvert.postprocessors.base import PostProcessorBase


class CopyToSubfolderPostProcessor(PostProcessorBase):
    def __init__(self, subfolder=None):
        self.subfolder = subfolder

adriantorrie

# http://stackoverflow.com/questions/14075581/git-undo-all-uncommitted-changes
git reset
git checkout .
git clean -fdx
git pull

# make all shell files in the repo /bin directory executable
find ./bin -name "*.sh" -exec chmod u+x {} \;

devxoul

#!/bin/bash
# Replace git tags to semantic version
# e.g. v1.0.0 -> 1.0.0

for vtag in $(git tag -l | awk '$0 ~ /^v/')
do
    tag=$(echo $vtag | sed -e 's/^v//')
    git tag $tag $vtag
    git tag -d $vtag
    git push origin :refs/tags/v$tag

garystafford

###############################################################################
# Helpful Docker commands and code snippets
###############################################################################

### CONTAINERS ###
docker stop $(docker ps -a -q) #stop ALL containers
docker rm -f $(docker ps -a -q) # remove ALL containers
docker rm -f $(sudo docker ps --before="container_id_here" -q) # can also filter

# exec into container

dideler

TL;DR

Create a backup:

pg_dumpall > mybackup.sql

Perform the upgrade:

sudo pg_dropcluster 9.4 main --stop