DevOpsDays Gent 2014 - Ignite about BGP

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Ignite talk I gave at DevOpsDays Gent 2014. How to use SDN techniques (BGP software) to replace VRRP/Keepalived for your loadbalancers

Technology

1
Hi!
I am Frank
Operations Boss
at @openminds
@frank_be

2
Openminds runs
a “DevOps challenge”
(no marketing, no recruiting)
Have fun, exercise your brain
win beeeeeer! (BaaS)

10
SDN solves
every problem …
… if you can
ditch legacy

SDN brought good
BGP software
implementations
11

12
On each loadbalancer:
- service ip
root@loadbalancer-001:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet 37.72.160.20/32 scope global lo
- health script
- BGP software

Am I healthy? Tell the network I know
13
how to handle 37.72.160.20
Am I unhealthy? Tell the network I
withdraw my knowledge about
37.72.160.20

14
Active nodes announce virtual IP +
priority to multiple BGP routers
The network knows which
loadbalancers are up and runninng

15
BGP Internet
everywhere!
Hey router,
I know about
37.72.160.20
Hey router,
I know about
37.72.160.20

19
Shutterstock: bit.ly/shutterstock-no-loadbalancers
ExaBGP and HA: bit.ly/exabgp-ha
ExaBGP: github.com/Exa-Networks/exabgp
HA DNS: bit.ly/ha-dns

20
Thanks!
And don’t
forget about
the Challenge
@Openminds
booth

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