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feat(haproxy): add k3s haproxy lb config snippet

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Simon Cornet 2026-01-28 09:46:36 +01:00
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# HAProxy snippets
## HAProxy Load Balancer for k3s
This guide assumes you have a HAProxy load balancer setup to proxy traffic to your k3s cluster nodes. The load balancer
will distribute incoming requests to the k3s API server across multiple master nodes, ensuring high availability.
```bash
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
defaults
log global
mode tcp
option tcplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
frontend k3s-http
bind 192.168.10.230:80
default_backend k3s-http
frontend k3s-https
bind 192.168.10.230:443
default_backend k3s-https
frontend k3s-api
bind 192.168.10.230:6443
default_backend k3s-nodes
backend k3s-http
balance roundrobin
stick-table type ip size 200k expire 30m
stick on src
option tcp-check
server node01 192.168.10.231:80 check
server node02 192.168.10.232:80 check
server node03 192.168.10.233:80 check
backend k3s-https
balance roundrobin
stick-table type ip size 200k expire 30m
stick on src
option tcp-check
server node01 192.168.10.231:443 check
server node02 192.168.10.232:443 check
server node03 192.168.10.233:443 check
backend k3s-nodes
balance roundrobin
option tcp-check
server node01 192.168.10.231:6443 check
server node02 192.168.10.232:6443 check
server node03 192.168.10.233:6443 check
```