haproxy.ctmpl

{{ scratch.Set "kv_config_prefix" (print "instances/" (env "INSTANCE_ID") "/services/lb-haproxy/") -}}
{{ scratch.Set "global_maxconn" (keyOrDefault (print (scratch.Get "kv_config_prefix") "maxconn") "") -}}
{{ scratch.Set "default_timeout_connect" (keyOrDefault (print (scratch.Get "kv_config_prefix") "default_timeouts/connect") "5000ms") -}}
{{ scratch.Set "default_timeout_client" (keyOrDefault (print (scratch.Get "kv_config_prefix") "default_timeouts/client") "5000ms") -}}
{{ scratch.Set "default_timeout_server" (keyOrDefault (print (scratch.Get "kv_config_prefix") "default_timeouts/server") "5000ms") -}}
global
    daemon
    {{- if (scratch.Get "global_maxconn")}}
    maxconn {{scratch.Get "global_maxconn"}}
    {{else}}
    {{end -}}
    ssl-default-bind-options no-sslv3 no-tls-tickets force-tlsv12
    ssl-default-bind-ciphers AES128+EECDH:AES128+EDH

defaults
    mode http
    default_backend backends
    timeout connect {{scratch.Get "default_timeout_connect"}}
    timeout client {{scratch.Get "default_timeout_client"}}
    timeout server {{scratch.Get "default_timeout_server"}}

listen stats
    bind 127.0.0.1:8080
    stats enable
    stats hide-version
    stats refresh 30s
    stats show-node
    stats uri  /haproxy?stats

frontend www
    bind *:80
    mode http
    default_backend backends

backend backends
    mode http
    balance roundrobin
    {{range (ls (print (scratch.Get "kv_config_prefix") "backends"))}}
    server {{.Key}} {{.Value}} check{{end}}