syncip

# /etc/crowdsec/notifications/ntfy.yaml

type: http          # Don't change
name: ntfy          # Must match the registered plugin in the profile

# One of "trace", "debug", "info", "warn", "error", "off"
log_level: trace

# group_wait:         # Time to wait collecting alerts before relaying a message to this plugin, eg "30s"
# group_threshold:    # Amount of alerts that triggers a message before <group_wait> has expired, eg "10"

bmatthewshea

apt-key add (key) is deprecated

On Debian Bookworm when running apt-key add.

NOTE: RSPAMD is only used as an example. This method should work for any deprecated install instructions for apt-key.

While executing:
wget -O- https://rspamd.com/apt-stable/gpg.key | apt-key add -

The following is observed:

"Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details."

diyfr

edit traefik.yml

entryPoints:
  web:
    address: ":80"
  websecure:
    address: ":443"
  dot: # <- ADD THIS
    address: ":853"  # <- ADD THIS

yorickdowne

Debian 12

To start, read the official release notes.

If your install fits into "vanilla Debian plus maybe a handful of 3rd-party repos", then this guide for a simple upgrade to Debian 12 "bookworm" from Debian 11 "bullseye" can be helpful. 3rd-party repos are handled with a find command.

Note upgrade is only supported from Debian 11 to Debian 12. If you are on Debian 10, upgrade to Debian 11 first and make sure to change the security repo as per the release notes. Then once on Debian 11, you can upgrade to Debian 12.

• Check free disk space

hibobmaster

project structure

.
├── compose.yaml
├── config
│   └── dendrite.yaml
├── element-web
│   └── config.json
├── nginx
│   └── dendrite.conf

bmatthewshea

CERTBOT - Install using Python PIP

Install Certbot using Python PIP (Package Installer for Python) - without using SNAP, APT or SYSTEMD. (Debian/Ubuntu)

---

This guide will help you install LetsEncrypt / Certbot using venv PIP under Debian/Ubuntu.

• This guide has been tested up to Debian 12 / Bookworm.

vyspiansky

docker/app/Dockerfile

# ...

# Run a cron job
ADD docker/conf/crontab.txt /crontab.txt
RUN /usr/bin/crontab /crontab.txt

# ...

egg82

More techniques - caching apt packages network-wide

This guide runs through setting up AptCacherNg on a proxy/server to provide apt caching to clients. The client proxy scripts allow for multiple proxies, and account for proxies being offline.

Note that, for obvious reasons, this only works on Debian-based machines (Ubuntu and derivatives as well).

Server (the cache/proxy)

Note: you will need port 3142 open to the clients using this cache/proxy

tavinus

Making Nextcloud's Cron Behave

Nextcloud needs frequent background jobs to keep running properly.

Depending on the situation this "cron job" may take a very long time, overlapping with the default 5 minute delay between jobs. Which may end up running several instances of the job.

To mitigate this we have 2 options:

• Use a systemd service+timer
• Encapsulate the cronjob into a bash script that checks if it is already running

The systemd approach has official support and will (by default) not run on top of a previous run (if still running).

matusnovak

Matrix

matrix.org chat is split into two parts, the server and the client. The server we are going to use is called Synapse and the client is Riot.im. The Synapse will also need Postgres database and Redis for caching.

0. Folders

Make sure your folder structure looks like this.

example/