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VSHN - The DevOps Company
Avoid the Vendor
Lock-in Trap
Cosmetic details? Dramatic impact.
© 2018 VSHN AG
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VSHN - The DevOps Company 2
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Simply Call Us. V-SH-N. ˈvɪʒn, “vision”
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VSHN - The DevOps Company
● The need for speed
● Choice versus lock-in
● Repository structure
● App setup & target envs
● Pipeline
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Till death do us apart?
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VSHN - The DevOps Company
1. Automated tests
2. CI/CD, automation
3. DevOps culture
4. Cloud native
5. Avoid vendor lock-in
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Building Blocks
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Choice or Lock-in?
Conventions
matter!
I shall apply
best practices
Separation
of concerns
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VSHN - The DevOps Company
❏ app/
❏ main.py
❏ tests/
❏ test_main.py
❏ deployment/
❏ app
❏ Dockerfile
❏ uwsgi.ini
❏ webserver
❏ Dockerfile
❏ nginx.conf
❏ app.yml
❏ docs/
❏ .gitlab-ci.yml
❏ README.md
❏ tox.ini
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Repository Structure
Separate concerns!
CI/CD pipeline only
(no project business logic)
Conventions of
technology in use
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VSHN - The DevOps Company
Avoid
● Lengthy setup instructions (README)
● Manual configuration steps
● Special scripts for setting up project
● config-local-dist.php & similar
● Disable linting, no tests
● A myriad of configuration files (and tools)
● Long-lived branches & git-flow
● Start monitoring late
● Start deploying late
App Setup & Target Environments
Favor
● Standard procedures for getting started
(short paragraph in README)
● Everything under version control (what is
needed to get started)
● Treat your dev machine as a (standard)
target environment
● Use getenv(‘VALUE’, ‘default’) etc.
● Short-lived feature branches
● Deploy & monitor from “commit 1”
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VSHN - The DevOps Company
Pipeline
# template-webserver.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: foo-bar-nginx
namespace: foo-dev
data:
Foo: |
worker_processes auto;
error_log stderr;
pid /var/opt/.../run/nginx/nginx.pid;
events {
worker_connections 1024;
}
...
```
# .gitlab-ci.yml
variables:
OPENSHIFT_PROJECT: foo-dev
APP_NAME: bar-baz
deploy:
- oc -n ${OPENSHIFT_PROJECT} create configmap
${APP_NAME}-nginx
--from-file=Foo=config/Foo/nginx.conf
--from-file=Bar=config/Bar/nginx.conf
--dry-run -o yaml |
oc -n ${OPENSHIFT_PROJECT} apply -f - ;
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Avoid!
Favor!
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Application-side
● Apply “shift-left”
● Container-driven
● Same tools for
development and
deployment
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How we ensure independence
Deployment-side
● No application-specific
details
● Standard approaches (CD)
● Keep platform-specific
differences to a minimum
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Come visit us for a coffee!
VSHN AG - Neugasse 10 - CH-8005 Zürich - +41 44 545 53 00 - https://vshn.ch/ - [email protected]
vshn.ch/contact
Follow us on Twitter!
@vshn_ch
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Join our team!
vshn.ch/jobs
Zur Erweiterung unseres Teams suchen
wir immer gute Frauen und Männer, die
wir anhand ihrer individuellen Stärken,
Erfahrungen und Wünsche in die
bestehenden Teams integrieren.
Bewirb dich noch heute!
Follow us on Twitter!
@vshn_ch
VSHN AG - Neugasse 10 - CH-8005 Zürich - +41 44 545 53 00 - https://vshn.ch/ - [email protected]
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