Running and scaling Symfony applications in containers can be easy when using the right tools and platforms.

1. Running and Scaling Symfony
app in container(s)
Jussi Nummelin, Engineer@Kontena Inc.
@JNummelin

2. © 2015 Kontena, Inc.

3. docker run –d mysql && docker run –d symfony
Running containers is easy
© 2016 Kontena, Inc.

4. From Containers to Microservices
• Containers have dependencies with eachother
• Docker Compose
• Tool for defining and running multi-container Docker applications
• Services and their configurations are defined in YAML file(s)

5. docker-compose.yml
© 2015 Kontena, Inc.

6. Docker Containers – Best Practices
© 2015 Kontena, Inc.

7. Docker Containers – Best practices
• Run one process per container
• Config through env
• Don’t rely on anything
• Databases at startup
• Downstream services
• Logs in stdout/stderr
• Don’t rely on IP addresses
© 2015 Kontena, Inc.

8. Rolling to production
© 2015 Kontena, Inc.

9. Rolling to Production
• How big this app will be? How many users it will serve?
• Do you want your application to be infrastructure agnostic or lean
heavily on some cloud provider?
• How to run databases or save other persistent data?
• How to scale the application and handle load balancing?
• How do you pass sensitive data to your application and where to
store that data?
• How the application can be deployed and updated with zero down-
time?
© 2015 Kontena, Inc.

10. © 2015 Kontena, Inc.

11. Kontena briefly

12. © 2015 Kontena, Inc.
What is Kontena?
Open Source container platform built to
maximize developer happiness. Works on
any cloud, easy to setup, simple to use.

13. How does it work?
Kontena Grid
A number of physical or virtual machines – Kontena Nodes
– create a Kontena Grid. The nodes may be located
anywhere; in single data center, different AZs or different
cloud providers.
Overlay Network
Kontena will automatically create an overlay network
powered by Weave and connect all nodes of a Grid. Overlay
network enable services to communicate with each other
in multi-host, multi-AZ environment.
Service Discovery
Kontena has a built-in service discovery powered by etcd. It
is used to automatically assign DNS addresses for any
services running in Kontena. It is also used by Kontena’s
load balancer for zero-downtime operation.
Orchestration
Kontena’s orchestrator is distributing, running and
monitoring all Kontena Services in a Grid. Services may be
stateless or stateful, and they are automatically distributed
across Nodes in a Grid.
Containerized Workloads
With Kontena, all containerized workloads are described as
Services. Kontena Service is composed of containers based
on the same image file. Services may be scaled and linked
together to create complex elastic apps.
OS
Docker
Kontena Nodes & Agent
Kontena Agent may be installed to
any machine capable of running
Docker. It is running as a privileged
container in a machine.
Kontena Master
Kontena Master is orchestrating the
entire Kontena system. It provides
APIs used by Kontena CLI, Web UI and
third party integrations.
Kontena Master may be installed as
high-availability setup if needed.

14. All Batteries Included!
Built-In Image Registry
Sometimes projects can not use publicly
hosted container image registries like
DockerHub. Kontena comes with built-in
container image registry providing private and
secure solution.
Built-In VPN Access
All containers are run inside a virtual private
network by default. Nothing is exposed to
Internet unless explicitly defined. With
Kontena’s built-in VPN access developers can
securely access those resources.
Built-In Load Balancer
Kontena comes with built-in load balancer.
Based on Haproxy. It features fully automatic,
zero-downtime operation due to deep
integration with Kontena’s service discovery
and orchestration technology.
Aggregated Stats & Logs
Kontena provides real-time log and statistics
streams containers. The streams may be
grouped and aggregated to produce service
level streams. This allows easy viewing of logs
and statistics for your application CPU,
memory, disk and network usage.
User Management with Audit Trail
All events and actions performed through
Kontena CLI or APIs are logged into audit trail.
Combined with users and access control, the
audit trail support makes Kontena a reliable
and secure solution for any enterprise
deployments.
Built-In Secrets Management
When your application requires access to APIs
or databases, you'll often need to use secrets
such as passwords and access tokens for
authenticating the access. Kontena Vault is a
secure key/value storage that can be used to
manage secrets in Kontena.

15. “Includes all the sh*it you don’t need to
implement by yourself”

16. Let’s kick some tires
https://github.com/jnummelin/symfony-demo

18. Our mission is to become
number 1 container &
microservices platform
for developers

19. ! info@kontena.io
" @kontenainc
# slack.kontena.io
$ github.com/kontena/kontena
meetup.com/pro/kontena
% www.kontena.io
Stay up to date!

20. Thank You!
www.kontena.io