CNCF Projects Overview - Kubernetes 2nd Birthday Celebration, Bangalore

1. Cloud Native Computing
Foundation Projects
Neependra Khare, CloudYuga
@neependra

2. About the Presenter
• Founder and Principal Consultant at CloudYuga
• Docker Captain
• Author of “Introduction to Kubernetes” course on Edx
• Author of Docker Cookbook
• Co-author of “Introduction to Cloud Infrastructure Technologies” course on Edx
• Self Paced online courses at school.cloudyuga.guru
• Containers Fundamentals - Docker, runC & rkt, online self paced course (2017)
• Containers (Docker) for Dev and QA , online self paced course (2017)

3. CNCF
• A Linux Foundation Project
• Aims to acceleration adoption of containers,
microservices and cloud native application
• CNCF hosts procjects like Containerd, Kubernetes but
they work under their pre-existing governance structure.
• New projects can be added

4. Container Runtime
Containerd
• Container runtime
• Available as daemon on Linux and Windows
• Uses runC to run containers
• Manages complete life-cycle of containers
• image transfer and storage
• container execution and supervision
• low level storage
• network attachment
• Exposes gRPC APIs over local Unix socket

5. Container Runtime
Containerd

6. Container Runtime
rkt
• Container runtime
• Available on Linux
• Supports swappable execution engines
• Can run Docker and OCI images
• Currently it based on appc specification.
Development is progress to fully support OCI
images and runtimes.

7. Remote Procedure Call
• High performance
• Open source Universal RPC
• With gRPC, we define a service
• specifies methods that can be called remotely
• uses Protocol Buffers as Interface Definition Language (IDL)
• Protocol Buffers are a language and platform neutral
mechanism to serialise structured data
• Bi-directional streaming with integrated auth
https://grpc.io

8. Container Networking
Container Network Interface (CNI)
Container Runtime
Container Network Interface
Loopback
Plugin
Bridge
Plugin
MACvlan
Plugin
IPvlan
Plugin
3rd Party
Plugins

9. Orchestration
Kubernetes
Kubernetes is an open-source system for automating deployment, scaling,
and management of containerized applications.
• Kubernetes features
• Automatic binpacking
• Self-healing
• Horizontal scaling
• Service discovery and load balancing
• Automated rollouts and rollbacks
• Secrets and configuration management
• Storage orchestration
• Batch execution

10. DNS & Service Discovery
CoreDNS
• Provides DNS and Service Discovery
• DNS functions are implemented as middlewares like
• Kubernetes Service Discovery
• Re-writing queries
• loadbalance
• …
• CoreDNS chains middlewares, based on requirement
• Can replace kube-dns in Kubernetes

11. Service Mesh
Linkerd
• Layer 5 Proxy
• Work with HTTP, HTTP/2, gRPC (not raw TCP)
• Provides
• Service Discovery ( Kubernetes, Marathon, Swarm)
• Intelligent Load Balancing
• Retries (Improve success rate)
• Circuit Breakers (Improve resilience)
• Metrics and Tracing

12. Monitoring and Alerting
Prometheus
https://prometheus.io

13. Logging
Fluentd
• Unified Logging with JSON
• Pluggable Architecture
• Minimum Resources Required
• Built-in Reliability
https://www.fluentd.org/architecture

14. Tracing
OpenTracing
• Standard instrumentation APIs
• Tracing tools, that uses OpenTracing
• Zipkin
• LightStep
• Jaeger
• Hawkular
• ….

15. References
• http://cncf.io
• http://kubernetes.io/
• https://prometheus.io/
• http://opentracing.io/
• http://fluentd.org/
• https://www.linkerd.io/
• http://www.grpc.io/
• https://coredns.io/
• http://containerd.io/
• https://github.com/rkt/rkt
• https://github.com/containernetworking

16. Thanks
neependra@cloudyuga.guru
https://www.linkedin.com/in/neependra/
@neependra