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Pierre Souchay
Discovery Team @Criteo
Twitter: @vizionr
Github: pierresouchay
HUG
Consul &
Inversion Of
Control
2 •
Pierre Souchay
GitHub: pierresouchay
Twitter: @vizionr
Leading Discovery Team Criteo (SDKs + Consul)
Dealing with (250k services), 35k Consul nodes in 8 DCs
Heavy Contributor to Consul
About me
1 2 3 4
Dev Configure / Install Run
Life of a project: Example
Die
4 •
• Needs education
• Needs contacts from the OPS guys
• All of this is changing all the time
Step 2 : Configuration of apps is hard/boring
5 •
Push/Pull Models for configuration
Let’s start, What is IoC?
7 •
Broader than Dependency Injection
Decoupling systems stuff using a framework
Provides semantics of your needs
Someone will provide what you need (and much more)
Inversion of Control
So, we need a framework
9 •
• Health info included, very valuable
• Scan the whole infrastructure easily
• Monitor changes
• Shared semantics with Tags / Service Meta
Consul exposes Services/Hosts
10 •
• Tags: ["http", "http2", "wants_oauth2", "business_critical"]
• Meta: single value, how to configure the stuff
• "vip_name": "mysuperapp.acme.com"
• "on_call_team": "myteam"
• "doc_url": "mywiki.acme.org"
Service Tags VS Service Meta
How does that work?
12 •
How does that work?
13 •
How that works with real example…
14 •
Service Definition
Looking for Swagger…
15 •
Examples – Semantics, not tool oriented
alert_channel = “myteam”
alert_ratio = “0.5”
alert_on_call_group = “myteam-alerts”
alert_depends_on = “database1,serviceX”
alert_criticity = “business,high”
16 •
• Decoupling declaration / implementation
• Cleanup problem is auto-solved
• Help experiments / alternatives
• Enforce innovation
• Ease transition
Benefits

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HashiCorp User Group Paris: Consul & Inversion of Control for Infrastructure

  • 1. Pierre Souchay Discovery Team @Criteo Twitter: @vizionr Github: pierresouchay HUG Consul & Inversion Of Control
  • 2. 2 • Pierre Souchay GitHub: pierresouchay Twitter: @vizionr Leading Discovery Team Criteo (SDKs + Consul) Dealing with (250k services), 35k Consul nodes in 8 DCs Heavy Contributor to Consul About me
  • 3. 1 2 3 4 Dev Configure / Install Run Life of a project: Example Die
  • 4. 4 • • Needs education • Needs contacts from the OPS guys • All of this is changing all the time Step 2 : Configuration of apps is hard/boring
  • 5. 5 • Push/Pull Models for configuration
  • 7. 7 • Broader than Dependency Injection Decoupling systems stuff using a framework Provides semantics of your needs Someone will provide what you need (and much more) Inversion of Control
  • 8. So, we need a framework
  • 9. 9 • • Health info included, very valuable • Scan the whole infrastructure easily • Monitor changes • Shared semantics with Tags / Service Meta Consul exposes Services/Hosts
  • 10. 10 • • Tags: ["http", "http2", "wants_oauth2", "business_critical"] • Meta: single value, how to configure the stuff • "vip_name": "mysuperapp.acme.com" • "on_call_team": "myteam" • "doc_url": "mywiki.acme.org" Service Tags VS Service Meta
  • 11. How does that work?
  • 12. 12 • How does that work?
  • 13. 13 • How that works with real example…
  • 15. 15 • Examples – Semantics, not tool oriented alert_channel = “myteam” alert_ratio = “0.5” alert_on_call_group = “myteam-alerts” alert_depends_on = “database1,serviceX” alert_criticity = “business,high”
  • 16. 16 • • Decoupling declaration / implementation • Cleanup problem is auto-solved • Help experiments / alternatives • Enforce innovation • Ease transition Benefits