2023-02-02 Very Tech Trip

Keynote

Lots of OVH cloud advertisings.

Velero - backup restore k8s app cleanly

https://www.2022.devops-dday.com/copy-of-conferences/velero-%3A-sauvegardez-et-restaurez-(proprement)-vos-applications-kubernetes

• Velero to backup and restore
• 2 components: controller + cli
• https://velero.io/
• ⚠️ Limit on the number of snapshots depending on the cloud provider
• 2 modes de backup: opt in ou opt out
• Best practice: 3-2-1 backup rule
• Kanister: backup database
• Long restore: use rsync in volumes

Dev reliable software through simulation

• Tests hardly scale with feature cardinality
• We don’t test enough error handling
• Production is injecting randomness into our code
• Determinist simulation : main goal is to control randomness
• Simulation driven development
  • Generate seed
  • Initiate random with chosen seed
  • Init scenario
  • Run it
  • Check it
  • Goto 1

https://pierrezemb.fr

Automate with bots

He used discord for his demo, but should also be implemented in Microsoft teams, slack, WhatsApp, telegram…

I thought it was a bit over-engineered.

Le job de mes rêves

• Work looks like romantic relationship
• 3 phases for change:
  • Bien être / motivation : projet, alignement avec entreprise, salaire, relation pro, évolution
    • 50% quittent à cause de leur manager
    • Coût du turn-over 33%
    • Identifier source et l’analyser
  • Suis je mentalement préparer pour changer
    • Sort de la zone de confort
  • Comment effectuer le changement
    • Ne pas choisir le même poste au risque de répéter la même situation

https://bit.ly/job-reves-vtt

One IDE to rule them all

• 17 days lost by switching keyboard to mous in a year
• Firenvim: Firefox plugin to use nvim in the browser

https://github.com/voltux/nvim_ide_presentation

Secure multi-cloud deployment

Tools spiffe and spire to present certificate like a mTLS between a front and a on prem backend

https://spiffe.io

Temporal your next workflow orchestrator

Core concepts:

• Workflows
• Activities
• Retry policies
• Workers

Advantages:

• As code: code as 1st class citizen
• Language agnostic (multiple sdks)

Must have at least one worker connected to temporal for one step.

My data is my asset

5 rules:

• Versioning
• Immutability: S3 lock
  • Write once, read many (WORM) model
• Replication
  • 3 copies of data
  • 2 supports
  • 1 off site
• Encryption at rest and in transit
• User policies