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@ammbra1508#Devoxx
Helm your way with Kubernetes
Ana Maria Mihalceanu
@ammbra1508#Devoxx
I am Ana
Technical Lead @ IBM
Co-founder of Bucharest Software Craftsmanship Community
HELLO!
@ammbra1508#Devoxx
Kubernetes
challenges
@ammbra1508#Devoxx
Manage & update Kubernetes
configurations
@ammbra1508#Devoxx
Deploy many configs as a SINGLE
application
@ammbra1508#Devoxx
Parametrize for multiple environments
support
@ammbra1508#Devoxx
@ammbra1508#Devoxx
What is Helm?
@ammbra1508#Devoxx
Why Helm?
@ammbra1508#Devoxx
Why Helm?
@ammbra1508#Devoxx
Why Helm?
@ammbra1508#Devoxx
Why Helm?
@ammbra1508#Devoxx
Why Helm?
@ammbra1508#Devoxx
Helm v3
@ammbra1508#Devoxx
Next in Helm v3
helm init
@ammbra1508#Devoxx
Next in Helm v3
@ammbra1508#Devoxx
Migrating from v2 to v3
More info https://v3.helm.sh/docs/intro/v2_v3_migration/
Helm v3 2to3 plugin
V2 V3
@ammbra1508#Devoxx
Playground
Overview
@ammbra1508#Devoxx
DEMO –
Chart per
service
approach
@ammbra1508#Devoxx
DEMO – Chart per service approach
@ammbra1508#Devoxx
DEMO –
Master
Chart
@ammbra1508#Devoxx
Hybrid approach
One dependent chart per service,
having values and specific aditionsOne “master” chart per
service group
@ammbra1508#Devoxx
Extra care required while using ...
Job and CronJob object templates
@ammbra1508#Devoxx
Extra care required while using ...
Secret templates
@ammbra1508#Devoxx
Extra care required while using ...
Role-Based Access Control (RBAC) resources
@ammbra1508#Devoxx
Takeaways
In a template,
check nested
values at every
level
Do not
hardcode
values in
template(s) that
manage secrets
Manage
environments
through
multiple values
files
Mind the way
you organize
your charts
@ammbra1508#Devoxx
Samples location :
https://github.com/ammbra/helm-faq

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Helm your way with Kubernetes