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sdme nesting: supported topologies

sdme supports nested workloads, but "nested" covers three materially different topologies. Storage, user namespaces, and the inner runtime determine what works.

flowchart TB
    H[Linux host + sdme]
 H --> P[Privileged outer nspawnno --userns]

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// Package main implements the mocker program, which is capable of creating
// container images for systemd-nspawn from Dockerfile configuration.
//
// It uses docker to extract the root filesystem of the image, but then
// runs all of the RUN commands from the systemd container.
//
// You have to ensure that the Dockerfile is installing systemd for the
// distro of the image, because these containers will be booted by using
// systemd-nspawn and they fail if there's no systemd inside the image.
//

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package walkstruct

import (
	"fmt"
	"reflect"
	"unicode"
)

// WalkStruct walks the exported fields of a struct using reflection,
// and calls fn for each field.

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#!/bin/bash

FRAMES_DIR=frames.$$
trap "rm -rf ${FRAMES_DIR}" EXIT

FPS=10
WIDTH=480
FONT_COLOR=white

INPUT="$1"

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#!/usr/bin/env python
# Implementation of http://www.calculatorsoup.com/calculators/algebra/percent-difference-calculator.php

v1=5067
v2=5733

def diff(v1, v2):
    f1, f2 = float(v1), float(v2)
    v = 1 - ((f1 - f2) / ((f1 + f2) / 2) * 100) - 1
    return v

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// Simple groupcache example: https://github.com/golang/groupcache
// Running 3 instances:
// go run groupcache.go -addr=:8080 -pool=http://127.0.0.1:8080,http://127.0.0.1:8081,http://127.0.0.1:8082
// go run groupcache.go -addr=:8081 -pool=http://127.0.0.1:8081,http://127.0.0.1:8080,http://127.0.0.1:8082
// go run groupcache.go -addr=:8082 -pool=http://127.0.0.1:8082,http://127.0.0.1:8080,http://127.0.0.1:8081
// Testing:
// curl localhost:8080/color?name=red
package main

import (

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package main

import (
	"bytes"
	"encoding/csv"
	"encoding/json"
	"encoding/xml"
	"fmt"
	"log"
	"math/rand"

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func RoundUp(v int) int {
	return 10 * ((v + 9) / 10)
}

func RoundDown(v int) int {
	return 10 * (v / 10)
}

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#!/usr/bin/env python

import sys
import time

from getopt import getopt

from PIL import Image
from selenium import webdriver

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package main

import (
	"flag"
	"log"
	"os"
	"os/exec"
	"strings"

	"github.com/nlopes/slack"