HAProxy 1.8 Config reload issues

@Gris13 wrote:

Upon switching to 1.8.14 from 1.6 we’ve been made aware that one of our backends have been redirecting to our maintenance page and they correlate to config reloads.

This is the portion of our haproxy config that we are falling into, we believe.

backend sslservice
acl NOT_ENOUGH_CAPACITY nbsrv(sslservice) le 0
redirect location {{ maintenance_url }} if NOT_ENOUGH_CAPACITY

We currently poll our autoscaling groups for any new/removed machines and update our haproxy config using a python script that runs every 4 minutes via a cron job. This is the method by which we’ve been updating our haproxy config since before I joined.

As an immediate need we are looking to find the best way to stop these maintenance pages during reloads so we tested out HAProxy Hitless Reloads. but we still have the issue of what seems to be no available backends on config reloads. I’m not 100% that we’ve properly configured it, but the following are exerpts from our configs.
Stats Socket:

stats socket /var/lib/haproxy/stats expose-fd listeners
Enabling master-worker
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 1000000
user haproxy
group haproxy
daemon
master-worker

Am I missing something here?

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