By Rafael Benevides and Edson Yanaga
Yes, Docker is great. We are all very aware of that, but now it’s time to take the next step: wrapping it all and deploying to a production environment. For this scenario, we need something more. For that “more,” we have Kubernetes by Google, a container platform based on the same technology used to deploy billions of containers per month on Google’s infrastructure. Ready to leverage your Docker skills and package your current Java app (WAR, EAR, or JAR)? Come to this session to see how your current Docker skill set can be easily mapped to Kubernetes concepts and commands. And get ready to deploy your containers in production.
2. Rafael Benevides
Director of Developer Experience at Red Hat
Apache DeltaSpike P.M.C
benevides@redhat.com
@rafabene
Java Certifications:
SCJA / SCJP / SCWCD / SCBCD / SCEA
JBoss Certifications:
JBCD / JBCAA
Red Hat Certifications:
OpenShift / Containers / Ansible
Other Certifications:
SAP Netweaver / ITIL / IBM Software Quality
3. Edson Yanaga
Director of Developer Experience at Red Hat
yanaga@redhat.com
@yanaga
Java Champion
Microsoft MVP
7. @rafabene / @yanaga
A way to run a Linux container:
$ docker run -d <image-name>
A single and isolated Linux process
running in a single machine
8. @rafabene / @yanaga
DevOps challenges for multiple containers
● How to scale?
● How to avoid port conflicts?
● How to manage them in multiple
hosts?
● What happens if a host has a
trouble?
● How to keep them running?
● How to update them?
● Where are my containers?
Node Node
Logger
Node
Node Node Node
9. @rafabene / @yanaga
Greek for “Helmsman”; also the root of the word
“Governor” (from latin: gubernator)
● Container orchestrator
● Supports multiple cloud and bare-metal environments
● Inspired by Google’s experience with containers
● Open source, written in Go
Manage applications, not machines
Meet Kubernetes
10. @rafabene / @yanaga
Version 1.3
Hosted on GitHub
800+ contributors
34,000+ commits
16,000+ GitHub stars
Red Hat
HP
IBM
Mesosphere
Microsoft
Project Partners
CoreOS
Pivotal
SaltStack
VMWare
http://kubernetes.io/
https://github.com/kubernetes/kubernetes
Open Source community
11. Master
API Server
Service Layer
VirtualPhysical Private Public
Persistent
Storage
Node Node
Logger
Node
Node Node Node
Dev
Ops
SCM
(Git/Svn)
CI/CD
Automation
Routing Layer
Registry
SDN Overlay Network
Controllers
- Scheduler
- Replication
- Services
- Builds
- Routes
- Deployment
Kubernetes
OpenShift
- Deployments
- Builds
- ImageStreams
12. @rafabene developers.redhat.com
Kubernetes Concepts
Pod Replication
Controller
Service Label
One or More Containers
Shared IP
Shared Storage Volume
Shared Resources
Shared Lifecycle
Ensures that a specified
number of pod replicas are
running at any one time
Grouping of pods, act as
one, has stable virtual IP
and DNS name
Key/Value pairs associated
with Kubernetes objects
(e.g. env=production)
13. @rafabene / @yanaga
Concept: Pod
● Group of containers
● Live and die together
● Share:
○ IP
○ Secrets
○ Labels *
○ Volumes *
* we will talk about these concepts later
Labels
Application
Administrative
console
Log collector
IP: 10.x.x.x
Volume
14. @rafabene / @yanaga
Concept: POD
Defining a POD as YAML:
apiVersion: v1
kind: Pod
metadata:
name: myPod
labels:
key: value
spec:
containers:
- name: mysql
image: username/image
- name: phpMyAdmin
image: username/image2
key: value
myPOD
mysql
phpMy..
15. SCM
(Git/Svn)
Master
API Server
Service Layer
VirtualPhysical Private Public
Persistent
Storage
Node Node
Logger
Node
Node Node Node
Dev
Ops
CI/CD
Automation
Routing Layer
Registry
SDN Overlay Network
Controllers
- Scheduler
- Replication
- Services
- Builds
- Routes
- Deployment
Kubernetes
OpenShift
- Deployments
- Builds
- ImageStreams
16. SCM
(Git/Svn)
Master
API Server
Service Layer
VirtualPhysical Private Public
Persistent
Storage
Node Node
Logger
Node
Node Node Node
Dev
Ops
CI/CD
Automation
Routing Layer
Registry
SDN Overlay Network
Controllers
- Scheduler
- Replication
- Services
- Builds
- Routes
- Deployment
Kubernetes
OpenShift
- Deployments
- Builds
- ImageStreams
17. SCM
(Git/Svn)
Master
API Server
Service Layer
VirtualPhysical Private Public
Persistent
Storage
Node Node
Logger
Node
Node Node Node
Dev
Ops
CI/CD
Automation
Routing Layer
Registry
SDN Overlay Network
Controllers
- Scheduler
- Replication
- Services
- Builds
- Routes
- Deployment
Kubernetes
OpenShift
- Deployments
- Builds
- ImageStreams