Kubernetes 1.3 HA Walkthrough – HAproxy

Table of Contents

You can find all of the config files on the GitHub page.

Install HAproxy

I’m using HAproxy as a load balancer for my controller nodes. There isn’t much to it. I used Ubuntu 14.04 LTS and installed it with the following command:

apt-get install haproxy

I used the default config and items after # My edits.

/etc/haproxy/haproxy.cfg


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

maxconn 2048

# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
tune.ssl.default-dh-param 2048

# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL). This list is from:
# https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3

defaults
log global
mode http
option forwardfor
option forwardfor
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http

# My edits

stats enable
stats uri /stats
stats realm Haproxy\ Statistics
stats auth admin:VMware1!

frontend kube-api-http
bind 192.168.3.201:80
reqadd X-Forwarded-Proto:\ http
default_backend www-backend

frontend kube-api-https
bind 192.168.3.201:6443 ssl crt /etc/ssl/private/kubernetes.pem
reqadd X-Forwarded-Proto:\ https
default_backend www-backend

backend www-backend
redirect scheme https if !{ ssl_fc }
option httpchk get /healthz
http-check expect string ok
server kube-controller0 192.168.3.176:8080 check
server kube-controller1 192.168.3.177:8080 check
server kube-controller2 192.168.3.178:8080 check

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