How to override default mode in HAProxy Ingress Controller

Question

I am using the HAProxy ingress controller in my EKS Kubernetes setup.

Recently I tried to set up a Redis instance on my k8s.

When I tried to connect and run any command from outside the cluster, I got the following error:

❱❱❱ redis-cli -h redis-ingress.local  -p 80 info 
Error: Protocol error, got "H" as reply type byte

On further debugging, I found the issue, that HAProxy needs to be running in TCP mode, and it is failing as the default mode is set to HTTP.

To solve this, I added the following annotation to my Redis-service, which should have solved the problem, but it didn't. I still keep getting the same error.

annotations:
    haproxy.org/backend-config-snippet: |
      mode tcp

I logged into one of the HAProxy containers to check the config, being used, and found the following block:

backend redis-service-redis 
  mode http
  balance roundrobin
  option forwardfor
  ###_config-snippet_### BEGIN
  mode tcp
  ###_config-snippet_### END
  server SRV_1 172.19.51.245:6379 check weight 128
  server SRV_2 127.0.0.1:6379 disabled check weight 128

As I can see, the config from the annotation is being applied, but it is not overwriting the mode.

I have few queries

How to overwrite the HTTP or whatever the global mode is set for a particular backend/Service?
If both the mode are specified in the backend(as in the above case), which one takes the preference?

How to override default mode in HAProxy Ingress Controller

0 Answers0