Haproxy maxconn customconfig setting is not working

[krimeshshah]

Describe the bug

Hi Team,

I am trying to deploy argocd with redis-ha proxy. This chart argo-cd chart uses dependency subchart for redis-ha https://github.com/DandyDeveloper/charts/tree/master/charts/redis-ha. Now when i deploy the argocd helm chart on the kubernetes cluster with nodes containing latest linux image. ha-proxy pods goes into carshloopback off state due to OOM.
After investigating found solution of setting maxconn parameter value 4096 in haproxy.cfg file . I can see in subchart there is parameter called customConfig where we can define this maxconn parameter. But it is not working https://github.com/DandyDeveloper/charts/blob/redis-ha-4.27.6/charts/redis-ha/values.yaml#L203.
Can someone help me how to make it workin in argo-cd helm chart?

Ref

• rlimit support kubernetes/kubernetes#3595 (comment)
• [argo-cd] Enabling ha with autoscaling results in redis-ha-haproxy crashing with OOMKilled #1958

Regards,
krimesh

Related helm chart

argo-cd

Helm chart version

7.7.1

To Reproduce

1. Deploy argo-cd helm chart with redis-ha and haproxy enabled on the kubernetes cluster with latest linux image. I am using gardenlinux[15192.1.0].
2. After argo-cd helm chart deployment you will find the redis-ha-haproxy pods in crashloopbackoff state due to oom issue.
3. There is already root cause and solution available to resolve this issue
   • rlimit support kubernetes/kubernetes#3595 (comment)
   • [argo-cd] Enabling ha with autoscaling results in redis-ha-haproxy crashing with OOMKilled #1958
4. How do i set/configure maxconn 4096 in haproxy.cfg while argo-cd chart is using redis-ha dependency subchart.

I tried to configure under haproxy block in values.yaml as shown below but it doesnt work.

customConfig
   global
      maxConn 4096

Expected behavior

redis-ha-haproxy pod should be in running state.

Screenshots

No response

Additional context

No response