vbatts

#cloud-config

coreos:
  units:
    - name: install-opt-dir.service
      content: |
        [Unit]
        Description=Install /opt directories
        ConditionPathIsDirectory=!/opt/libexec
        ConditionPathIsDirectory=!/opt/libexec.wd

vbatts

#!/bin/sh

t_dir="$HOME/tmp"

mkdir -p ${t_dir}
pushd ${t_dir}

for url in \
    ftp://ftp.ruby-lang.org/pub/ruby/ruby-1.9.3-p194.tar.bz2 \
    http://openssl.org/source/openssl-1.0.1c.tar.gz

vbatts

walkthrough: buildah on knative

The buildah utility is a versitile container build tool that does not require a daemon (everything is direct invocation). See my "deep dive" for a few hands on use-cases.

Recently knative was announced. It is a project to enable the kubernetes primitives needed to build a functions-as-a-service. There are a plumbing services needed around this use-case, "build" is one of them. Building containers is largely an indepenent goal and story of "serverless" or "FaaS", but I get why they are grouped together.

vbatts

FROM buildpack-deps:stretch-scm

# gcc for cgo
RUN apt-get update && apt-get install -y --no-install-recommends \
		g++ \
		gcc \
		libc6-dev \
		make \
		pkg-config \
	&& rm -rf /var/lib/apt/lists/*

vbatts

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"os"
	"sort"
	"strings"
	"time"

vbatts

# Vincent Batts <vbatts@kinvolk.io> 2020-09

CWD		:= $(shell pwd)
SSH_KEY		?= $(shell realpath $$HOME/.ssh/authorized_keys)
HOST_NAME	?= flatcar-local.test.lan
ISO_FILE	= $(CWD)/$(HOST_NAME).iso
MEMORY		?= 4096
PORT		?= 2223
CHANNEL		?= stable
BOARD		?= amd64-usr

vbatts

#!/bin/bash

set -eu

conf_zip=""
if [ -f kv0.zip ] ; then
  conf_zip="kv0.zip"
fi
if [ -f kv1.zip ] ; then
  conf_zip="kv1.zip"

vbatts

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"strings"

vbatts

IMAGE   := ubuntu:20.10
CWD     := $(shell pwd)
NAME    := $(shell git config user.name)
EMAIL   := $(shell git config user.email)

SWTPM_URL := https://github.com/stefanberger/swtpm

build: build.sh output
        docker run \

vbatts

Curiosity on the differences from moby/moby#16531 (comment)

$ go test
PASS
ok      _/home/vbatts/tmp/string        0.003s
$ go test -run=NONE -bench=. -test.benchmem=true 
PASS
BenchmarkString-4 100000 18982 ns/op 0 B/op 0 allocs/op