Applications

VS Code Configuration

Global

Raccourci clavier

Sous linux, il se peut que les raccourcis claviers divergent de la langue locale du système. Pour cela, il faut modifier un paramètre de VS Code.
https://github.com/Microsoft/vscode/wiki/Keybinding-Issues#troubleshoot-linux-keybindings

Docker

Custom format output (GO template)

https://docs.docker.com/config/formatting/

In CLI

'{{ .ID }}\t{{.Image}}\t{{ .Names }}'

Or directly in .docker/config.json :

{
  "psFormat": "table {{.ID}}\\t{{.Image}}\\t{{.Status}}\\t{{.Names}} ({{.Ports}})"
}

Bash

Bash

How to use correctly error-handling

set -euo pipefail

Bash

Bash profile

Bash profile customization

https://github.com/ohmybash/oh-my-bash

Run this :
bash -c "$(curl -fsSL https://raw.githubusercontent.com/ohmybash/oh-my-bash/master/tools/install.sh)"

SSH

SSH Overview

Generate a secure SSH key

ED25519 requires OpenSSH v6.5

ssh-keygen -t ed25519 -a 100 -f ~/.ssh/id_ed25519_admin -C "{my-email@domain.tld}"

You might need a second RSA key because ED25519 uses the OpenSSH format to save the private key. This new format is supported from OpenSSH v6.5.

ssh-keygen -t rsa -b 4096 -a 100 -f ~/.ssh/id_rsa_admin -C "{my-email@domain.tld}"

Information

Read a private key and output the public key (e.g. to validate the password) :

ssh-keygen -y -f ~/.ssh/id_ed25519_admin

SSH-Agent Configuration with KeepassXC

GNOME

Gnome keyring is used by default.

# Check the status of the service
systemctl --user status gnome-keyring-daemon.s*

Disable it if you want to use the ssh-agent service.

KDE Plasma

Use the ssh-agent service offered with openssh.

# Enable the service
systemctl --user enable ssh-agent.service
# Configure env var for user session
mkdir -p ~/.config/environment.d
cat << EOF > ~/.config/environment.d/ssh_auth_socket.conf
SSH_AUTH_SOCK="\${XDG_RUNTIME_DIR}/ssh-agent.socket"
EOF
# Stop and disable the GNome Keyring Daemon if enabled
systemctl stop gnome-keyring-daemon.socket gnome-keyring-daemon.service
sudo systemctl --global disable gnome-keyring-daemon.socket

[https://wiki.archlinux.org/title/SSH_keys#Start_ssh-agent_with_systemd_user]
[https://devopstales.github.io/linux/ssh-credential-in-keepassxc/]

Ressources

https://risanb.com/code/upgrade-ssh-key-to-ed25519/
https://wiki.archlinux.org/title/SSH_keys
https://dancroak.com/ssh-ed25519
https://tutox.fr/2020/04/16/generer-des-cles-ssh-qui-tiennent-la-route/
https://homputersecurity.com/2017/04/21/authentication-en-deux-etapes-sur-un-serveur-ssh-cle-publique-code-totp/

WireGuard

WireGuard

Blog with interesting articles
https://www.procustodibus.com/blog/

NextCloud

NextCloud

MariaDB Backup

Commandes de base

Informations

Backing Up a Single Database

mysqldump -u root -p database_name > database_name.sql

Backing up all databases

mysqldump -u root -p --all-databases > all-databases.sql

Append the date to te filename

mysqldump -u root -p database_name > database_name_$(date +%F_%H-%M).sql

MariaDB backup in Docker

source .env && docker-compose exec mariadb mysqldump -uroot -p${MARIADB_ROOT_PASSWORD} --all-databases > mariadb-dump-$(date +%F_%H-%M-%S).sql

Ressources

https://www.linuxbabe.com/mariadb/how-to-back-up-mariadb-databases-from-the-command-line
https://techoverflow.net/2020/12/01/how-to-backup-data-from-docker-compose-mariadb-container-using-mysqldump/
https://davejansen.com/how-to-dump-and-restore-a-mariadb-mysql-database-from-a-docker-container/

NextCloud

Configuration globale

Apps

Preview generator

Ajouter une tâche pour la génération des prévisualisations

Gestion du pare-feu Linux

FirewallD

https://www.linuxtricks.fr/wiki/firewalld-le-pare-feu-facile-sous-linux

https://dev.to/soerenmetje/how-to-secure-a-docker-host-using-firewalld-2joo

https://www.grottedubarbu.fr/docker-firewall/

Docker

Docker

Gestion des accès réseaux (local/internet)

Gestion des réseaux

Gestion des ports exposés

https://docs.docker.com/engine/reference/commandline/run/#publish

Docker

Gestion des usagers

https://blog.giovannidemizio.eu/2021/05/24/how-to-set-user-and-group-in-docker-compose/