See a demo of HashiCorp Consul Service (HCS) on Azure and learn how it could be used to migrate from monolithic, VM-based apps to microservices running on Kubernetes.

1. Copyright © 2019 HashiCorp
Moving to a
Microservice World.
Leveraging Consul on Azure.

2. Moving to a Microservice World.
Alex Jauch
Product Manager at HashiCorp
Erik Veld
Developer Advocate at HashiCorp

3. Introduction to Consul.

4. Market trend:
Moving from
monoliths
microservices.
Single,
Physical Server
Dynamic Virtual
Machines
Smaller, Ephemeral
Containers

5. Dynamic Infrastructure
Service-based networking
Static Infrastructure
Host-based networking
!
The shift from
static to
dynamic
networking

6. Dynamic Infrastructure
Service-based networking
Static Infrastructure
Host-based networking
!
Homogeneous infrastructure with static
IPs, primarily north-south traffic, protected
by coarse-grained segments.
Traditional Approach
▪ Load balancers to create artificial static
IPs
▪ Firewall sprawl to constrict service
traffic
▪ Configuration management to deploy
services
Heterogeneous infrastructure with
dynamic IPs, dominated by east-west
traffic, without a clear network perimeter.
Consul Approach
▪ Service Discovery for connectivity
▪ Service Segmentation for security
▪ Service configuration for runtime
configuration
The shift from
static to
dynamic
networking

7. Consul
Use Cases Service
Discovery
Service
Configuration
Service registry,
integrated health checks,
and DNS and HTTP
interfaces enable any
service to discover and
be discovered by other
services.
Service
Segmentation
Secure service-to-service
communication with
automatic TLS encryption
and identity-based
authorization.
Feature rich key/value
store to easily configure
services across
distributed infrastructure
in real-time.
Distributed service
networking layer to
connect, secure,
configure services

8. HashiCorp Consul
Service.

9. HashiCorp Consul Service (HCS) on Azure
Consul-as-a-Service
Managed by HashiCorp, Integrated with Microsoft Azure
Easily provision Consul clusters through Azure
The easiest way to get a best practice Consul cluster up and running
Full Managed Service
Patching, Upgrades and 24/365 Support

10. HashiCorp Consul Service
HashiCorp Consul Service easily enables
Service Discovery and Service Mesh on
Microsoft Azure

11. ▪ Provision and Manage resources through the Azure Portal
▪ Control access through Azure Active Directory
▪ Granular metering and usage data on your Azure Bill
HashiCorp Consul Service - Integrated
with Azure

12. HashiCorp Consul Service on Azure

13. HCS Demo.

14. Migrating from
monolith to
microservices.

15. Current State
Azure with AKS and HCS.
AKS - Azure (10.42.0.0/16) Virtual Machines - Azure(10.5.0.0/16)
WAN (192.168.0.0/16)
HCS
10.5.0.200 (Azure)
192.168.0.200 (WAN)
Payments
10.5.0.110 (Azure)
Web
10.5.0.100 (Azure)
POST http://fakeservice.inc/pay

16. Desired State
Azure with AKS and HCS.
AKS - Azure (10.42.0.0/16) Virtual Machines - Azure(10.5.0.0/16)
WAN (192.168.0.0/16)
HCS
10.5.0.200 (Azure)
192.168.0.200 (WAN)
Payments
10.4.0.yy (Azure)
Web
10.4.0.zz (Azure)
POST http://fakeservice.inc/pay
Currency
10.42.0.xx (Azure)

17. Demo Setup
"Azure" with "Virtual Machines".
Virtual Machines - Azure (10.5.0.0/16)
WAN (192.169.0.0/16)
"HCS"
10.5.0.200 (Azure)
192.169.0.200 (WAN)
Web
10.5.0.100 (Azure)
192.168.0.100 (WAN)
POST http://fakeservice.inc/pay
Payments "Virtual Machine"
Consul Client
127.0.0.1:8500
Payments
127.0.0.1:9090
Envoy Proxy
10.5.0.110:20000
Supervisor
Payments
10.5.0.110 (Azure)

18. Add Service Mesh
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
POST /payments
GET /currency/{country}
Sidecar Proxy
127.0.0.1:9091
Sidecar Proxy
10.5.0.110:20000

19. Split up Monolith
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
Currency V2
10.5.0.120:9090
Currency
In process call
POST /payments
GET /currency/{country}
Kubernetes (10.4.0.0/16)

20. Test new version
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
Currency
In process call
Payments V2
10.5.0.110:9090
Currency V2
10.5.0.120:9090
POST /payments
POST /payments
X-Group dev
GET /currency/{country}

21. Release Canary
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
Currency
In process call
Payments V2
10.5.0.110:9090
Currency V2
10.5.0.120:9090
100%
0%

22. Ramp up traffic
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
Currency
In process call
Payments V2
10.5.0.110:9090
Currency V2
10.5.0.120:9090
50%
50%

23. Switch to new version
Web
10.5.0.100:9090
Payments
10.5.0.110:9090
Currency
In process call
Payments V2
10.5.0.110:9090
Currency V2
10.5.0.120:9090
0%
100%

24. github.com/eveld/hashidays
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25. Thank You
www.hashicorp.com
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