Hi @devika.pujari,
Welcome to the HashiCorp Forums!
The error you shared happens when your IP address issues too many requests. You can refer to this topic in which I have explained more about this feature in Consul.
ref: Http_max_conns_per_client in Consul Clients VS Consul servers
The relevant configuration option to tweak this is the limits.http_max_conns_per_client.
ref: Agents - Configuration File Reference | Consul | HashiCorp Developer
On Consul-K8S cluster, you will have to configure this using the server.extraConfig option, as this configuration is not directly exposed in the Helm chart to be configured.
ref: Helm Chart Reference | Consul | HashiCorp Developer
I hope this helps.