This document introduces inlets, a tool that provides public IPs for Kubernetes clusters by tunneling traffic through a proxy. It discusses how the number of available IPv4 addresses has been exhausted, and how inlets addresses this by tapping into unused IP address stockpiles from cloud providers. The document outlines several use cases for inlets including webhook integrations, chatops, and IoT command and control. It also provides an overview of the inlets operator for Kubernetes and the roadmap for future inlets features and services.

1. Still waiting for IPv6?
Get a public IP for your Kubernetes
Cluster with inlets
Alex Ellis, Founder @ OpenFaaS Ltd
Meet OpenFaaS @ KubeCon => http://bit.ly/2Oeodlm

2. @inletsdev
AGENDA
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• IPv4 is dead, long live IPv4
• Introducing inlets
• Use-cases and case-studies
• inlets-operator for Kubernetes
• What’s next?

3. @inletsdev 3

4. @inletsdev 4
WE’VE RUN OUT OF IP ADDRESSES!
• 4 Billion IPv4 addresses
• Now completely sold out
• Time for IPv6?
340 trillion trillion trillion
addresses
25 years old already!
https://en.wikipedia.org/wiki/IPv4_address_exhaustion

5. @inletsdev 5
IPV4 VS. IPV6
IPv6
• Not widely available
• Some leaders -
Packet.com, ISPs: BT,
Kubernetes, Mythic Beasts
• Many laggards - hard to
upgrade completely
IPv4 work-arounds
• Time for a reality-check
• Carrier grade NAT (IP
sharing)
• Cloud vendors have stock-
piles
• Dual-stack for foreseeable
future

6. @inletsdev 6
SECONDARY MARKET
https://auctions.ipv4.global

7. @inletsdev
REFRAMING THE PROBLEM
• CEO @ civo.com - IPs on
secondary market ~=20USD
• What if we could tap into the
stockpiles?
• 4 Billion addresses out there,
from 5 USD / mo
7

8. @inletsdev
INLETS - NETWORK TUNNEL & PROXY
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9. @inletsdev
INLETS - NETWORK TUNNEL & PROXY
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10. @inletsdev 10
INLETS DEMO
curl -SLfs https://inletsctl.inlets.dev | sudo sh

11. @inletsdev 11
USE-CASES
Platform engineering
• Webhook integration
• ChatOps
• Alerting
Developers/freelancers
• K8s services
• Sharing work
IoT
• Command and control
• VSHN - inlets for OpenShift
control-plane
• DX, Norway - Point of sales
control-plane
• Argo tunnels - edge CDN
• Banzai Cloud - K8s
controllers
CASE-STUDIES

12. @inletsdev
INLETS VS.
Inlets
• Free, OSS MIT licensed
• inlets - HTTP L7
• inlets-pro - TCP L4
• inlets-operator
• CNCF Landscape ✅
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Ngrok
• Limited # connections
• Sign-up 👎
• Disconnects after 7 hours
• Closed-source
• Limited K8s integration
Cloudflare Argo
• Not free
• Closed-source backend
MetalLB
• Great, but not a tunnel

13. @inletsdev 13
COMMUNITY 5k

14. @inletsdev 14
INLETS OPERATOR

15. @inletsdev 15
INLETS OPERATOR

16. @inletsdev 16
INLETS OPERATOR

17. @inletsdev 17
INLETS OPERATOR (DEMO)

18. @inletsdev 18
ROADMAP
Operator
• Add more clouds
• Helm chart
inletsctl
• Create/delete exit-nodes
via CLI
• OSS + Pro supported
Website coming!
• Service LoadBalancer -
Expose raw TCP @ L4
• Automatic TLS negotiation
for exit node
• Apply for free trial
INLETS-PRO

19. Connect & Learn
Join Slack https://slack.openfaas.io/
Try the Kubernetes Operator - DigitalOcean,
Packet, Scaleway, GCP, and more
@inletsdev

20. @inletsdev inlets.dev
Thank you!
Alex Ellis, Founder of OpenFaaS
CNCF Ambassador
Consultant: OSS, Go, Serverless, Kubernetes
alex@openfaas.com
Meet OpenFaaS Community @ KubeCon:
http://bit.ly/2Oeodlm