from containers to functions
clouds, containers, functions, applications and their management
Missing: functions, unikernels, other? Needs pivoted to describe principles.
Deployment and Packaging
Evolution to Cloud Native
We hold these truths to be self-evident...
Docker EE customers
Containers are the “Fastest Growing Cloud Enabling Technology”
- 451 Research
"By 2020, more than 50% of global organizations will be running containers in production."
Job listings on LinkedIn
Use namespaces to deal with resource isolation for a single process.
Use cgroups to manage resources for a group of processes.
Types of Containers - Cloud Native way
[k uh n- tey -ner]
[ awr -k uh -streyt-or]
Host Health Monitoring
Orchestrator Updates and Host Maintenance
Networking and Load-Balancing
Application Health & Performance Monitoring
Docker Swarm 1.11 (Standalone)
Docker Swarm Mode 1.12 (Swarmkit)
A high-level perspective of the container orchestrator spectrum .
The first few services are relatively easy
Democratization of language and technology choice
Faster delivery, service teams running independently, rolling updates
The next 10 or so may introduce pain
Language and framework specific libraries
Distributed environments, ephemeral infrastructure, out-moded tooling
The "layer 5" challenge
• Traffic Control
a dedicated layer for managing service-to-service communication
so, a microservices platform?
Orchestrators don't bring all that you need
and neither do service meshes,
but they do get you closer.
Missing: application lifecycle management, but not by much
Missing: distributed debugging; provide nascent visibility (topology)
An open platform to connect, manage, and secure microservices
is what gets people hooked on service metrics
Metrics without instrumenting apps
Consistent metrics across fleet
Trace flow of requests across services
Portable across metric backend providers
You get a metric! You get a metric! Everyone gets a metric!
control over chaos
Timeouts and Retries with timeout budget
Circuit breakers and Health checks
Control connection pool size and request load
content-based traffic steering
Touches every packet/request in the system. Responsible for service discovery, health checking, routing, load balancing, authentication, authorization and observability.
Provides policy and configuration for services in the mesh.
Takes a set of isolated stateless sidecar proxies and turns them into a service mesh.
Does not touch any packets/requests in the system.
discovery & config
Out-of-band telemetry propagation
Control flow during request processing
Increasing focus on business logic
Decreasing concern (and control) over infrastructure implementation
No compute cost when idle.
Flexible and precise scaling.
No provisioning, updating, and managing server infrastructure.
with a few caveats
consider serverless when your workload is...
A library operating system
a way of cross-compiling (existing) applications down to very small, lightweight, secure virtual machine
Microservices are (intended to be) small, self-contained, single-purpose applications.
Unikernels cannot handle multiple processes, so forking is not allowed.
Unikernels can handle threads.
Are single user, but who needs multiple users?
Can statically link data into application.
Unik - Unikernel Compiler and Deployment
Disclaimer: I'm a Cloud Native Ambassador and TOC Contributor
a vendor-neutral foundation to...
...a community of open source projects, including Kubernetes, Envoy and Prometheus.
Kubernetes and other CNCF projects are some of the highest velocity projects in the history of open source.
Cloud Native Interactive Landscape
Cloud Native Landscape
Disclaimer: I organize the Austin CNCF meetup.
KubeCon + CloudNativeCon Attendees
Members of CNCF Meetups
Creating a common model for event data, similar to CNI and CSI. Coalescing on a single format between a few proposals:
Cloud-Native Event Mapping (CNEM) – (iguazio)
CloudEvents – (Serverless, Inc.)
Cloud Auditing Data Federation – (IBM, DMTF)
Stewarding the Networking working group.
Participating in the OpenMetrics working group.
Run Kubernetes, Prometheus, Open Policy Agent.
from containers to functions
This has been an infrastructure tour.
What about processes and organization? CI/CD, DevOps and SRE
clouds, containers, functions,
applications and their management