Rancher MasterClass - Avoiding-configuration-drift.pptx

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Kubernetes Master Class
June 28, 2022
Avoiding Configuration Drift with Argo CD
by SUSE

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Crowdcast
● Ask questions and upvote
● Look out for polls
● Say something nice in the chat
● Session is recorded

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Rancher Master Class Series
• 45 minutes – 75 minutes
• Questions are always welcome!
• Use the questions tab to submit your questions
• We do our best to respond to all questions during the Q&A at
the end, so mark your question as private if needed

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http://youtube.com/c/rancher
This session is being recorded!

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Dan Garfield
Co-Founder & Chief Open Source Officer
Argo Proj Maintainer
Speaker

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Overview
1 Brief Intro to Rancher
2 Explaining Configuration Drift
3 Intro to GitOps / Argo CD
4 Bidirectional Sync Git < - > Cluster
5 Self-Healing Kubernetes Clusters
Live Demo
Q/A
6
7

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Kubernetes with Rancher

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What is Configuration Drift?
• Two environments are supposed to be similar – but are
not
• Nobody knows what is deployed in a specific
environment
• Ad hoc changes, cowboy deployments, undocumented
hotfixes
• Security breach

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What is Configuration Drift?

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Common Symptoms
• Deployments succeed in staging but fail in production
• Some systems are off-limits because people are afraid
to touch them
• Hacks and quick fixes in specific environments are very
common
• People always try to find differences between
environments

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Configuration Drift and Kubernetes

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Configuration Drift and Kubernetes

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Strategies for Avoiding Configuration Drift
• Documentation
• Audit all manual changes
• Attempt to enforce best practices
• Training and onboarding
All these are doomed to fail

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Argo CD and GitOps

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How GitOps Works

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Argo CD and GitOps

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Always Guarantee that Git <-> Cluster

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Auto-Detect Manual Changes

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Self-Healing

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Rancher + Argo CD
DEMO
https://github.com/todaywasawesome

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About Codefresh
• Hosted GitOps
• Argo Control Plane
• Built-in Argo Rollouts,
Workflows, Events
• Security, enterprise
support
• DORA metrics
• CI Integrations
• Use Argo at Scale
What’s in the
release?
● Git commits
● Pull requests
● Jira issues
Which release is
impacting
production?
● Filtered timeline
of all releases
● Failure
identification
Which services
are rolling out?
● View of canary
and blue/green
deployments
● Health metrics
● 1-click rollbacks
Where are
artifacts
deployed?
● Universal view
across org and
apps
● Associated
pipelines/trigger
s

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Q & A

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Thank You