DevNetOps Overview
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From Automation to DevNetOps to Self-Driving Networks This document outlines the evolution from automation to DevNetOps to self-driving networks. It discusses how automation enables consistency, speed and scale through open APIs, config management and telemetry. DevNetOps integrates network operations into the DevOps process through tools, processes and cultural changes. This allows intent-based designs, continuous integration/delivery, and network as code. Self-driving networks apply AI to optimize resources, anticipate problems and scale through continuous measurement and response based on telemetry and analytics.
DevNetOps Overview
- 1. From Automation to DevNetOps to Self-Driving CLOUD-GRADE NETWORKING
- 2. PRESENTERS James Kelly Lead Cloud Architect Juniper Networks • Engineer • Marketer • Continual Learner (Kaizen Jedi) connect
- 3. EVOLUTION OF NETWORKING CLOUD-GRADE NETWORKING Enabling automation: • Open API programmability • Config management • Telemetry interfaces • Disaggregation • System extensibility • SDN • VNFs AUTOMATION Enable intent-based designs: • Declarative configs • Abstraction layers in systems and APIs • Continuous feedback and response • Narrow-AI networking decisions SELF-DRIVING NETWORK Enable agility and quality: • Network as Code and agile change mgmt Config + Templates + Artifacts + OS • Pipeline of continuous integration, testing, staging simulation and delivery • Micro-service immutable infrastructure • Orchestrated deployments, rolling upgrades, and traffic management • Resiliency testing drills (chaos monkey) DevNetOps
- 4. WHY WE AUTOMATE CONSISTENCY Improve reliability SPEED The future belongs to the fast SCALE Optimized capacity for demand DIGITAL OPERATIONSINSTRUMENTATION Handle complexity and improve human interaction
- 5. COEFFICIENTS OF AUTOMATION space – architecture time – processes AGILE CONTINUOUS PROCESSES API-ARCHITECTURE – X-aaS & as Code CLOUD & DEVOPS
- 6. NEW HEROS IN THE DEVOPS SAGA DevNetOps & DevSecOps
- 7. DEFINING TERMS For application development ops DevOps mentality around security ops DevOps mentality around network ops DevOps DevSecOps DevNetOps DevOps brings together development and operations: - PEOPLE and cultural principles and behavior through the entire business-level service lifecycle - PROCESSES from design to production to maintenance reliability, scale, performance, security - TOOLS to scale architecture, automate, collaborate, measure and thus improve quality and speed In classic DevOps, traditional ops concerns like security and infrastructure are shifting left, moving earlier on the code-to-cash timeline. These alter egos are part of classic DevOps and app development + operations: • SecDevOps aka Rugged DevOps propels security earlier in considerations of DevOps • NetDevOps (less popular term) propels networking into considerations of DevOps (eg. apps controlling the network) The Shift Left Software is crafted, built and run in the same organization Silos are internal to IT department Security and networking solutions are mostly bought and assembled Silos are vendor-customer so co-creation is required
- 8. DEFINING TERMS… and ROLES For application development ops DevOps mentality around security ops DevOps mentality around network ops DevOps DevSecOps DevNetOps DevOps brings together development and operations: - PEOPLE and cultural principles and behavior through the entire business-level service lifecycle - PROCESSES from design to production to maintenance reliability, scale, performance, security - TOOLS to scale architecture, automate, collaborate, measure and thus improve quality and speed In classic DevOps, traditional ops concerns like security and infrastructure are shifting left, moving earlier on the code-to-cash timeline. These alter egos are part of classic DevOps and app development + operations: • SecDevOps aka Rugged DevOps propels security earlier in considerations of DevOps • NetDevOps (less popular term) propels networking into considerations of DevOps (eg. apps controlling the network) The Shift Left Software is crafted, built and run in the same organization Silos are internal to IT department NRE: Network Reliability Engineer
- 9. Resiliency Design and Drills Orchestrated Upgrades Pipeline Orchestration Network as Code Micro Immutable Architecture STEPS TOWARD DevNetOps TOOLING PROCESSES PEOPLE •Git, GitLab/Hub, Gerrit, Specs •IaC tooling for cloud / SDN •Declarative config as code (YAML) •Real code: programmed extensions •Agile, sprints, reactive changes •Reviewing, branching •Design templates and abstractions •“DevNet” simulation checking •Code, Developer and SCM skills •Fearless/blameless post-mortems •Bug scrubbing •Culture of projects as feature dev
- 10. Resiliency Design and Drills Orchestrated Upgrades Pipeline Orchestration Network as Code Micro Immutable Architecture STEPS TOWARD DevNetOps TOOLING PROCESSES PEOPLE •Git, GitLab/Hub, Gerrit, Specs •IaC tooling for cloud / SDN •Declarative config as code (YAML) •Real code: programmed extensions •Agile, sprints, reactive changes •Reviewing, branching •Design templates and abstractions •“DevNet” simulation checking •Code, Developer and SCM skills •Fearless/blameless post-mortems •Bug scrubbing •Culture of projects as feature dev •Baking (eg. Aminator/Packer) •Testing (eg. Jenkins) •Pipeline as code (eg. Spinnaker) •Orchestrate deployments •Continuous integration/delivery •Automatic and manual judgements •“Continuous” deployment under supervision with traffic management •Adapt to test failures •Test-driven development •Pipeline ops specialist teams
- 11. Resiliency Design and Drills Orchestrated Upgrades Pipeline Orchestration Network as Code Micro Immutable Architecture STEPS TOWARD DevNetOps TOOLING PROCESSES PEOPLE •Git, GitLab/Hub, Gerrit, Specs •IaC tooling for cloud / SDN •Declarative config as code (YAML) •Real code: programmed extensions •Agile, sprints, reactive changes •Reviewing, branching •Design templates and abstractions •“DevNet” simulation checking •Code, Developer and SCM skills •Fearless/blameless post-mortems •Bug scrubbing •Culture of projects as feature dev •Baking (eg. Aminator/Packer) •Testing (eg. Jenkins) •Pipeline as code (eg. Spinnaker) •Orchestrate deployments •Continuous integration/delivery •Automatic and manual judgements •“Continuous” deployment under supervision with traffic management •Adapt to test failures •Test-driven development •Pipeline ops specialist teams •Containers & functions (from baking) •CaaS and FaaS to run SDN systems •ZTP minimal network OS •Secrets, configs, volumes ”mounting” •Design/package software into single- purpose services •CD as a vendor GTM model •Design read-only CLI / GUIs •Vendor-led re-architecting software and systems for micro-upgradability •Customer-led network architecture / traffic management with redundancy
- 12. Resiliency Design and Drills Orchestrated Upgrades Pipeline Orchestration Network as Code Micro Immutable Architecture STEPS TOWARD DevNetOps TOOLING PROCESSES PEOPLE •Git, GitLab/Hub, Gerrit, Specs •IaC tooling for cloud / SDN •Declarative config as code (YAML) •Real code: programmed extensions •Agile, sprints, reactive changes •Reviewing, branching •Design templates and abstractions •“DevNet” simulation checking •Code, Developer and SCM skills •Fearless/blameless post-mortems •Bug scrubbing •Culture of projects as feature dev •Baking (eg. Aminator/Packer) •Testing (eg. Jenkins) •Pipeline as code (eg. Spinnaker) •Orchestrate deployments •Continuous integration/delivery •Automatic and manual judgements •“Continuous” deployment under supervision with traffic management •Adapt to test failures •Test-driven development •Pipeline ops specialist teams •Containers & functions (from baking) •CaaS and FaaS to run SDN systems •ZTP minimal network OS •Secrets, configs, volumes ”mounting” •Design/package software into single- purpose services •CD as a vendor GTM model •Design read-only CLI / GUIs •Vendor-led re-architecting software and systems for micro-upgradability •Customer-led network architecture / traffic management with redundancy • If in-place cutovers won’t do, traffic balancing/draining orchestration as code (across systems or ports) and orchestrate deploys (eg. Spinnaker) • Deployment step in the pipeline • Staging simulation environments • Blue/green or canary failure rollbacks • Frequent small updates/upgrades • Hands-off deployment mindset • Roll-forward determinations
- 13. Resiliency Design and Drills Orchestrated Upgrades Pipeline Orchestration Network as Code Micro Immutable Architecture STEPS TOWARD DevNetOps TOOLING PROCESSES PEOPLE •Git, GitLab/Hub, Gerrit, Specs •IaC tooling for cloud / SDN •Declarative config as code (YAML) •Real code: programmed extensions •Agile, sprints, reactive changes •Reviewing, branching •Design templates and abstractions •“DevNet” simulation checking •Code, Developer and SCM skills •Fearless/blameless post-mortems •Bug scrubbing •Culture of projects as feature dev •Baking (eg. Aminator/Packer) •Testing (eg. Jenkins) •Pipeline as code (eg. Spinnaker) •Orchestrate deployments •Continuous integration/delivery •Automatic and manual judgements •“Continuous” deployment under supervision with traffic management •Adapt to test failures •Test-driven development •Pipeline ops specialist teams •Containers & functions (from baking) •CaaS and FaaS to run SDN systems •ZTP minimal network OS •Secrets, configs, volumes ”mounting” •Design/package software into single- purpose services •CD as a vendor GTM model •Design read-only CLI / GUIs •Vendor-led re-architecting software and systems for micro-upgradability •Customer-led network architecture / traffic management with redundancy • If in-place cutovers won’t do, traffic balancing/draining orchestration as code (across systems or ports) and orchestrate deploys (eg. Spinnaker) • Deployment step in the pipeline • Staging simulation environments • Blue/green or canary failure rollbacks • Frequent small updates/upgrades • Hands-off deployment mindset • Roll-forward determinations • Net-chaos monkey and watchdogs • kill -9, unplug or cut cables, etc. • DoS and traffic generators • BFD, re-convergence optimization • Develop drills for staging • Run periodically in production if/when possible (the new “maintenance” window) • Active open mindedness • Design for security and resiliency • Force failures to avoid black swans • Sadistic practices of tech killing ;)
- 14. CLOUD-GRADE NETWORKING SELF-DRIVING NETWORKS: Apply big data collection and narrow-AI to networking - Optimize and self-heal resources - Anticipate problems and avoid them - Scale TOOLING PROCESSES PEOPLE •Drill-down dashboards •KPIs through technicals •Real-time & historical telemetry •IT ops integrations (eg. PagerDuty) •Incident and anomaly playbooks •Data science-led planning and optimization •Management by metrics •Start with the important questions not the data you have •Shift to read-only GUIs Continuous Response Continuous Measurement STEPS TOWARD DevNetOps
- 15. CLOUD-GRADE NETWORKING SELF-DRIVING NETWORKS: Apply big data collection and narrow-AI to networking - Optimize and self-heal resources - Anticipate problems and avoid them - Scale TOOLING PROCESSES PEOPLE •Drill-down dashboards •KPIs through technicals •Real-time & historical telemetry •IT ops integrations (eg. PagerDuty) •Incident and anomaly playbooks •Data science-led planning and optimization •Management by metrics •Start with the important questions not the data you have •Shift to read-only GUIs Continuous Response Continuous Measurement •Infrastructure lifecycle APIs •Scaling/healing “operator” policy and ML and event frameworks from node auto-repair to full-blown FaaS •AI operator and analytics for expert system learning •Workflows for supervised self-driving •Pattern searching and reinvention •Continual reinvention operational stability/performance automation •Optimize economics and capacity STEPS TOWARD DevNetOps
- 16. Thank you
Editor's Notes
- #5: Consistency and correctness implied
- #6: API Archttecture = X aaS = everything is an API and service – generally composed of microservices X as Code = everything is programmable and everything follows sw dev patterns Continuous processes = everything is orchestrated on a pipeline for speed, consistency (quality) and instrumented for real-time continuous response and optimization Continuous integration > delivery > deployment > response Microservice = perfect match for nimble agile process where many step steps are favored
- #9: NRE of course drawing inspiration from SRE: Site reliability engineering