Add configurable host binding support for SSE transport

- Add host parameter to CLI flags and configuration with default "0.0.0.0"
- Update SSE server to bind to specified host address
- Add host parameter to OpenShift template for deployment configuration
- Add undeploy make target to clean up deployed resources

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: tiwillia

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build run clean container-build container-run container-clean
+.PHONY: build run clean container-build container-run container-clean deploy undeploy
 
 # Build the rosa-mcp-server binary
 build:
@@ -24,3 +24,11 @@ container-run: container-build
 # Clean container image
 container-clean:
 	podman rmi rosa-mcp-server:latest
+
+# Deploy to OpenShift using template
+deploy:
+	oc process -f openshift/template.yaml | oc apply -f -
+
+# Remove deployed resources from OpenShift
+undeploy:
+	oc process -f openshift/template.yaml | oc delete -f -

cmd/rosa-mcp-server/main.go

@@ -18,6 +18,7 @@ var (
 	transport     string
 	ocmBaseURL    string
 	ocmClientID   string
+	host          string
 	port          int
 	sseBaseURL    string
 )
@@ -49,6 +50,9 @@ var rootCmd = &cobra.Command{
 		if cmd.Flags().Changed("ocm-client-id") {
 			cfg.OCMClientID = ocmClientID
 		}
+		if cmd.Flags().Changed("host") {
+			cfg.Host = host
+		}
 		if cmd.Flags().Changed("port") {
 			cfg.Port = port
 		}
@@ -77,6 +81,7 @@ func init() {
 	rootCmd.Flags().StringVar(&transport, "transport", "stdio", "transport mode (stdio/sse)")
 	rootCmd.Flags().StringVar(&ocmBaseURL, "ocm-base-url", "https://api.openshift.com", "OCM API base URL")
 	rootCmd.Flags().StringVar(&ocmClientID, "ocm-client-id", "cloud-services", "OCM client ID")
+	rootCmd.Flags().StringVar(&host, "host", "0.0.0.0", "host for SSE transport")
 	rootCmd.Flags().IntVar(&port, "port", 8080, "port for SSE transport")
 	rootCmd.Flags().StringVar(&sseBaseURL, "sse-base-url", "", "SSE base URL for public endpoints")
 

openshift/template.yaml

@@ -0,0 +1,117 @@
+---
+apiVersion: template.openshift.io/v1
+kind: Template
+metadata:
+  name: rosa-mcp-server
+parameters:
+  - name: IMAGE
+    value: quay.io/redhat-ai-tools/rosa-mcp-server
+  - name: IMAGE_TAG
+    value: latest
+  - name: HOST
+    value: "0.0.0.0"
+    description: "Host for SSE transport"
+  - name: PORT
+    value: "8080"
+    description: "Port for SSE transport"
+  - name: OCM_BASE_URL
+    value: https://api.openshift.com
+    description: "OCM API base URL"
+  - name: OCM_CLIENT_ID
+    value: cloud-services
+    description: "OCM client ID"
+  - name: SSE_BASE_URL
+    value: ""
+    description: "SSE base URL for public endpoints (optional)"
+  - name: CERT_MANAGER_ISSUER_NAME
+    value: letsencrypt-dns
+    description: "Cert-manager issuer name for TLS certificates"
+  - name: MCP_HOST
+    value: rosa-mcp-server.example.com
+    description: "Hostname for the OpenShift route"
+objects:
+- apiVersion: apps/v1
+  kind: Deployment
+  metadata:
+    labels:
+      app: rosa-mcp-server
+    name: rosa-mcp-server
+  spec:
+    progressDeadlineSeconds: 600
+    replicas: 1
+    revisionHistoryLimit: 10
+    selector:
+      matchLabels:
+        app: rosa-mcp-server
+    strategy:
+      rollingUpdate:
+        maxSurge: 25%
+        maxUnavailable: 25%
+      type: RollingUpdate
+    template:
+      metadata:
+        creationTimestamp: null
+        labels:
+          app: rosa-mcp-server
+      spec:
+        containers:
+        - name: rosa-mcp-server
+          image: ${IMAGE}:${IMAGE_TAG}
+          imagePullPolicy: Always
+          args:
+          - --transport=sse
+          - --host=${HOST}
+          - --port=${PORT}
+          - --ocm-base-url=${OCM_BASE_URL}
+          - --ocm-client-id=${OCM_CLIENT_ID}
+          - --sse-base-url=${SSE_BASE_URL}
+          ports:
+          - containerPort: 8080
+            protocol: TCP
+          resources:
+            limits:
+              cpu: 200m
+              memory: 256Mi
+            requests:
+              cpu: 100m
+              memory: 128Mi
+          terminationMessagePath: /dev/termination-log
+          terminationMessagePolicy: File
+        dnsPolicy: ClusterFirst
+        restartPolicy: Always
+        schedulerName: default-scheduler
+        securityContext: {}
+        terminationGracePeriodSeconds: 30
+- apiVersion: v1
+  kind: Service
+  metadata:
+    name: rosa-mcp-server
+    labels:
+      app: rosa-mcp-server
+  spec:
+    selector:
+      app: rosa-mcp-server
+    ports:
+      - protocol: TCP
+        port: 8080
+        targetPort: 8080
+    type: ClusterIP
+- apiVersion: route.openshift.io/v1
+  kind: Route
+  metadata:
+    annotations:
+      cert-manager.io/issuer-kind: ClusterIssuer
+      cert-manager.io/issuer-name: ${CERT_MANAGER_ISSUER_NAME}
+    name: rosa-mcp-server
+    labels:
+      app: rosa-mcp-server
+  spec:
+    host: ${MCP_HOST}
+    to:
+      kind: Service
+      name: rosa-mcp-server
+    port:
+      targetPort: 8080
+    tls:
+      insecureEdgeTerminationPolicy: Redirect
+      termination: edge

pkg/config/config.go

@@ -15,6 +15,9 @@ type Configuration struct {
 	// Transport mode selection (stdio/SSE)
 	Transport string `toml:"transport"`
 
+	// Optional: Host for SSE/HTTP transport
+	Host string `toml:"host"`
+	
 	// Optional: Port for SSE/HTTP transport
 	Port int `toml:"port"`
 
@@ -28,6 +31,7 @@ func NewConfiguration() *Configuration {
 		OCMBaseURL:  "https://api.openshift.com",
 		OCMClientID: "cloud-services",
 		Transport:   "stdio",
+		Host:        "0.0.0.0",
 		Port:        8080,
 	}
 }

pkg/mcp/server.go

@@ -58,7 +58,7 @@ func (s *Server) ServeStdio() error {
 
 // ServeSSE serves the MCP server via SSE transport
 func (s *Server) ServeSSE() error {
-	glog.Infof("Starting SSE server on port %d", s.config.Port)
+	glog.Infof("Starting SSE server on %s:%d", s.config.Host, s.config.Port)
 
 	// Create SSE server using mcp-go library
 	options := []server.SSEOption{}
@@ -70,7 +70,7 @@ func (s *Server) ServeSSE() error {
 	options = append(options, server.WithSSEContextFunc(s.extractHeadersToContext))
 
 	sseServer := server.NewSSEServer(s.mcpServer, options...)
-	return sseServer.Start(fmt.Sprintf(":%d", s.config.Port))
+	return sseServer.Start(fmt.Sprintf("%s:%d", s.config.Host, s.config.Port))
 }