Adopting Istion on YAML at a Time

Meagan O'Keef Kubernetes Colorado, October 9, 2019

Istion by Example

Problem Statements

Microservices

• Benefits:
  • to scale independently
  • separation of concerns/ownership
  • Faster commit-to-deploy time (velocity)
• Challenges:
  • More complex
  • More service owners
  • More programming languages
  • More network interactions/ more hops

Kubernetes

• Licycles containers, keeps apps alive
• Treat a bank of servers as one (a cluster!)
• Add more nodes as you scale

Kube doesn't...

• How do I investigate latency?
• Manage security policies

Service Mesh

• An observability tool
• A transparent layer on your comute infrastructure
• A sidecar proxy is inject beside every service
• Proxies can collect metrics

Istio

• collects telemetry for every service

• safe rollouts with traffic splitting

• encryption in transit

• a control plane

  • the user talks to this
  • this lives in kubernetes

• a data plan *