carlwgeorge

- hosts: all
  vars:
    user: carl
    uid: 1000
  become: true
  tasks:

    - name: install syncthing
      package:
        name: syncthing

carlwgeorge

# https://docs.ansible.com/ansible/latest/modules/dconf_module.html
#
# To determine what dconf keys and values to use, you can run `dconf watch /`
# in a terminal as you make changes in settings or tweaks.  You can also use
# `dconf read <key>` and `dconf write <key> <value>` to experiment with various
# settings.  The dconf-editor application is also useful for exploring various
# keys along with their descriptions.

- hosts: localhost
  tasks:

carlwgeorge

How I switched from mdadm to btrfs

After reading [this Ars Technica article][1], I decided that I wanted to start using btrfs on my home fileserver. It had been running for a few years with an mdadm raid-10 array, formatted with ext4, holding about 3.4 TB of data. I figured I would take advantage of some of the special capabilities of btrfs to perform the conversion in place. After some research, I formed my basic plan.

• backup data to external drives
• remove two of the drives from the mdadm raid-10
• configure those two drive with a btrfs raid-0 filesystem
• copy the data from the degraded mdadm raid-10 to the new btrfs raid-0
• completely deactivate the mdadm raid-10

carlwgeorge

#!/usr/bin/python3

import repomd


def count(name, rpms_repo_url, srpms_repo_url):
    rpm_count = len(repomd.load(rpms_repo_url))
    srpm_count = len(repomd.load(srpms_repo_url))
    print(f'{name}: {rpm_count:7,} RPMs {srpm_count:6,} SRPMs')

carlwgeorge

#!/usr/bin/python3

import repomd


def count(baseurl):
    r = repomd.load(baseurl)
    print(f'{len(r)} - {baseurl}')

carlwgeorge

#!/usr/bin/bash
set -eu
buildah unshare << EOF
set -eu
ctr=\$(buildah from scratch)
mnt=\$(buildah mount \$ctr)
dnf \
    --releasever 35 \
    --disablerepo '*' \
    --enablerepo fedora,updates \

carlwgeorge

Debian Kernel Hooks

Recently I setup my work laptop to dual boot Arch Linux and Ubuntu server with syslinux as my bootloader. I setup the laptop with a dedicated /boot partition that would be shared between the two operating systems. I added this boot entry to /boot/syslinux/syslinux.cfg.

LABEL ubuntu
    MENU LABEL Ubuntu 
    LINUX ../vmlinuz-3.8.0-29-generic
    APPEND root=LABEL=UBUNTU rw

INITRD ../initrd.img-3.8.0-29-generic

carlwgeorge

#!/usr/bin/python3

import repomd

epol7_repo = repomd.load('https://yum.oracle.com/repo/OracleLinux/OL7/developer_EPEL/x86_64/')
epel7_repo = repomd.load('https://dl.fedoraproject.org/pub/epel/7/x86_64/')
epol8_repo = repomd.load('https://yum.oracle.com/repo/OracleLinux/OL8/developer/EPEL/x86_64/')
epel8_repo = repomd.load('https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/')

epel7_names = {p.name for p in epel7_repo if not p.arch == 'src'}

carlwgeorge

#!/usr/bin/python3

import asyncio
import pathlib
import textwrap

import bs4
import httpx
import rfc3986

carlwgeorge

#!/usr/bin/bash

set -ue

name=$(basename $0)
utils_dir='/home/carl/sync/containers/utils'

if [[ "$name" == "run-image" ]]; then
	echo "Don't run this directly, symlink it as the name you want to run."
	exit 1