Sysadmins for sysadmins

If your uptime is more than 30 days - probably the system is vulnerable

How to run your own chat (matrix) server

This talk covers the origins of flame graphs, how you can create them using open source software, and how to interpret them. In practice, flame graphs don’t always work completely due to problems walking stack traces, resolving symbols, and other issues; this talk explains the problems and shows you the latest techniques for fixing them.

Joe Duffy discusses the challenges (and solutions) met while running IaC and how that shapes the future of IaC.

Interesting tool

hat tip to https://sreweekly.com

might be handy

TIL about 100.x.x.x addresses, was using tailscale for some time, but was not aware that they are from specific range.

Mail sending relay, has a free tier, good for small self-hosted services, mailgun and similar alternative

Very good article on failovering systems

Found it useful overview of 2PC

mass firewall updater

Something to think about

cross-posted from: https://feddit.uk/post/225052

An exceptionally well explained rant that I find myself in total agreement with.

Rather simple backup of PostgreSQL database to remote Borg repository in Kubernetes (Example using Mastodon instance)

cross-posted from: https://lemmy.world/post/182705

Uptrace is an OpenTelemetry APM tool that supports distributed tracing, metrics, and logs. You can use it to monitor applications and set up automatic alerts to receive notifications via email, Slack, Telegram, and more.

In this release, we improved spans filtering, metrics dashboards, added AWS CloudWatch integration, restored an ability to use Uptrace as Grafana datasource, and more.

#Coimbra, #Portugal September 14-17, 2023

HA is always handy, when it is working :)

Multi-datacenter deployments are not easy, here are some insights from Wikipedia team. That Wikipedia traffic is mostly reads (as opposed to write heavy system) is also helping.

Seems like useful tooling