dtkav

Create SSH tunnels using systemd units

Table of contents

• Overview
• Setup the SSH agent systemd unit
• Setup the SSH-tunnel systemd unit
• Create tunnels using systemd services
• Examples
• Create a tunnel to a web server on a machine that's only accessible by SSH

dtkav

#!/bin/bash
# create memory limited cgroup
sudo cgcreate -g memory:firefox
echo "5G" | sudo tee -a /sys/fs/cgroup/memory/firefox/memory.limit_in_bytes
echo "1" | sudo tee -a /sys/fs/cgroup/memory/firefox/memory.swappiness

# move shell to cgroup
echo $$ | sudo tee /sys/fs/cgroup/memory/firefox/tasks

# start firefox

dtkav

import json
from connexion.apis.abstract import Specification
spec = Specification.from_spec("swagger.yml")
json.dumps(spec.raw)

dtkav

Error:
  description: schema for problem+json (RFC 7807)
  type: object
  required:
  - type
  properties:
    type:
      description: A URI reference [RFC3986] that identifies the problem type.
      type: string
      format: uri 

dtkav

openapi: 3.0.0
#servers: []  # this breaks swagger-ui
info:
  title: Pet Shop Example API
  version: '0.1'
paths:
  /pets:
    get:
      tags:
        - Pets

dtkav

openapi: 3.0.0
servers: []  # this breaks swagger-ui
info:
  title: Pet Shop Example API
  version: '0.1'
paths:
  /pets:
    get:
      tags:
        - Pets

dtkav

Keybase proof

I hereby claim:

• I am dtkav on github.
• I am dtkav (https://keybase.io/dtkav) on keybase.
• I have a public key ASC8OLoL69bvPb7ZaW_dRwzOIJacND4cQaRd3hHA3_E7vwo

To claim this, I am signing this object:

dtkav

from __future__ import print_function

import urllib
import urllib2
import json

PLANET_URL = "http://ephemerides.planet-labs.com/planet_mc.tle"

def lambda_handler(event, context):
    cb = event["params"]["querystring"].get("callback", "tle_data")

dtkav

Verifying that +dtkav is my blockchain ID. https://onename.com/dtkav

dtkav

function dug() {
   ls -d */ >/dev/null 2>&1;
   if [[ $? -eq 0 && `ls -d */ | wc -l` -eq 1 ]];
   then
      builtin cd `ls -d */`;
      dig;
   fi
}