☸️ feat: Helm hostAliases Support For Custom DNS Mappings (#9857)

Add ability to configure hostAliases in Helm chart to redirect traffic to proxy servers or custom endpoints via /etc/hosts entries.

Co-authored-by: Feng Lu <feng.lu@kindredgroup.com>

helm/librechat/examples/hostaliases-values.yaml

@@ -0,0 +1,6 @@
+# Example: Redirect AWS Bedrock EU traffic to proxy server
+hostAliases:
+  - ip: "10.1.2.3"  # Your proxy server IP
+    hostnames:
+      - "bedrock-runtime.eu-central-1.amazonaws.com"
+      - "bedrock.eu-central-1.amazonaws.com"

helm/librechat/templates/deployment.yaml

@@ -26,6 +26,10 @@ spec:
         {{- toYaml . | nindent 8 }}
         {{- end }}
     spec:
+      {{- with .Values.hostAliases }}
+      hostAliases:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- if .Values.dnsPolicy }}
       dnsPolicy: {{ .Values.dnsPolicy }}
       {{- end }}

helm/librechat/values.yaml

@@ -220,6 +220,14 @@ tolerations: []
 
 affinity: {}
 
+# Host aliases for custom domain-to-IP mappings (adds entries to /etc/hosts)
+hostAliases: []
+# Example - Redirect AWS Bedrock to proxy:
+# hostAliases:
+#   - ip: "10.1.2.3"
+#     hostnames:
+#       - "bedrock-runtime.eu-central-1.amazonaws.com"
+
 # DNS Configuration
 # Customize DNS resolution for redirecting traffic to proxy servers
 dnsPolicy: ""  # Options: ClusterFirst, Default, None, ClusterFirstWithHostNet