Keepalived

VRRP failover and IPVS layer 4 load balancing with real-server health checking.

Provider: default
Kind: Load balancer
Category: Edge
Official docs: https://keepalived.readthedocs.io/en/latest/introduction.html

Properties · 3 set by this component

property	type	values	required	kind default	this component
connectionPreserving · advanced	boolean	—	no	false	inherited
forwardingMethod · component property	enum	nat \| dr \| tun	no	—	inherited
global	boolean	—	no	false	inherited
hashing	enum	round-robin \| least-connections \| ecmp \| maglev \| consistent \| random	no	round-robin	inherited
healthChecks	boolean	—	no	true	▸ true
instances	integer	—	no	—	inherited
layer	enum	l4 \| l7	no	l7	▸ l4
managed	boolean	—	no	false	▸ false
vrrp · component property	boolean	—	no	true	inherited

Rules that apply · 0

Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.

No rule reads this kind yet. That is a gap, not a guarantee.

Use it in a design

nodes:
  - { id: "keepalived", component: "keepalived" }

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Source

1# yaml-language-server: $schema=../../schema/component.schema.json
2# Keepalived: self-hosted L4 load balancing on the Linux IPVS kernel module plus a VRRPv2 stack for
3# failover. Per "Introduction" its two functions are health checking of LVS real servers and VRRP
4# failover; lb_algo and lb_kind have no documented default and must be set per virtual_server.
5schemaVersion: "1"
6type: "component"
7id: "keepalived"
8kind: "load-balancer"
9provider: "default"
10docs: "https://keepalived.readthedocs.io/en/latest/introduction.html"
11defaults:
12  layer: "l4"
13  managed: false
14  healthChecks: true
15properties:
16  vrrp:
17    type: "boolean"
18    default: true
19  forwardingMethod:
20    type: "enum"
21    values: ["nat", "dr", "tun"]

The same page as markdown, for an agent: /catalogue/components/keepalived.md