diff --git a/aenv/src/aenv/client/scheduler_client.py b/aenv/src/aenv/client/scheduler_client.py
index 50cd798..bace5ff 100644
--- a/aenv/src/aenv/client/scheduler_client.py
+++ b/aenv/src/aenv/client/scheduler_client.py
@@ -612,7 +612,6 @@ async def update_env_service(
         self,
         service_id: str,
         replicas: Optional[int] = None,
-        image: Optional[str] = None,
         environment_variables: Optional[Dict[str, str]] = None,
     ) -> "EnvService":
         """
@@ -621,7 +620,6 @@ async def update_env_service(
         Args:
             service_id: Environment service ID
             replicas: Optional number of replicas
-            image: Optional container image
             environment_variables: Optional environment variables
 
         Returns:
@@ -638,7 +636,6 @@ async def update_env_service(
 
         request = EnvServiceUpdateRequest(
             replicas=replicas,
-            image=image,
             environment_variables=environment_variables,
         )
 
diff --git a/aenv/src/aenv/core/environment.py b/aenv/src/aenv/core/environment.py
index 3268f5e..7628cd0 100644
--- a/aenv/src/aenv/core/environment.py
+++ b/aenv/src/aenv/core/environment.py
@@ -477,8 +477,8 @@ async def _call_function(
         if ensure_initialized:
             await self._ensure_initialized()
 
-        logger.info(
-            f"{self._log_prefix()} Executing function in environment {self.env_name} with url={function_url} proxy_headers={self.proxy_headers}, timeout={timeout}"
+        logger.debug(
+            f"{self._log_prefix()} Executing function in environment {self.env_name} with url={function_url}"
         )
 
         try:
@@ -514,8 +514,8 @@ async def _call_function(
                 if not result.get("success", False):
                     raise EnvironmentError(result.get("error", "Unknown error"))
 
-                logger.info(
-                    f"{self._log_prefix()} Function '{function_url}' executed successfully with result={result}"
+                logger.debug(
+                    f"{self._log_prefix()} Function '{function_url}' executed successfully"
                 )
                 return result.get("data", {})
 
@@ -724,8 +724,8 @@ async def _wait_for_healthy(self, timeout: float = 300.0) -> None:
             result = ""
 
             while True:
-                logger.info(
-                    f"{self._log_prefix()} check {self.env_name} health at round {times} with url: {self.aenv_health_url}, last_check_result={result}"
+                logger.debug(
+                    f"{self._log_prefix()} check {self.env_name} health at round {times} with url: {self.aenv_health_url}"
                 )
 
                 try:
@@ -745,13 +745,13 @@ async def _wait_for_healthy(self, timeout: float = 300.0) -> None:
                         or result.get("status") == "healthy"
                     ):
                         logger.info(
-                            f"{self._log_prefix()} Environment {self.env_name} is healthy"
+                            f"{self._log_prefix()} Environment {self.env_name} is healthy after {times + 1} attempts"
                         )
                         return
 
                 except Exception as e:
                     logger.debug(
-                        f"{self._log_prefix()} Health check failed: {str(e)}, retrying..."
+                        f"{self._log_prefix()} Health check attempt {times + 1} failed: {str(e)}, retrying..."
                     )
 
                 if asyncio.get_event_loop().time() - start_time > timeout:
diff --git a/aenv/src/aenv/core/models.py b/aenv/src/aenv/core/models.py
index 93d4a4b..5e05f06 100644
--- a/aenv/src/aenv/core/models.py
+++ b/aenv/src/aenv/core/models.py
@@ -166,7 +166,6 @@ class EnvServiceUpdateRequest(BaseModel):
     """Request to update an environment service."""
 
     replicas: Optional[int] = Field(None, description="Number of replicas")
-    image: Optional[str] = Field(None, description="Container image")
     environment_variables: Optional[Dict[str, str]] = Field(
         None, description="Environment variables"
     )
diff --git a/aenv/src/cli/cmds/service.py b/aenv/src/cli/cmds/service.py
index 3a507c3..00b2e2a 100644
--- a/aenv/src/cli/cmds/service.py
+++ b/aenv/src/cli/cmds/service.py
@@ -20,7 +20,7 @@
 - service list: List running services
 - service get: Get detailed service information
 - service delete: Delete a service
-- service update: Update service (replicas, image, env vars)
+- service update: Update service (replicas, env vars)
 """
 import asyncio
 import json
@@ -157,11 +157,13 @@ def create(
     1. CLI parameters (--replicas, --port, --enable-storage)
     2. config.json's deployConfig.service (new structure)
     3. config.json's deployConfig (legacy flat structure, for backward compatibility)
-    4. System defaults
+    4. API Service will fetch missing parameters from envhub if not provided in CLI/config
+    5. System defaults
 
     Storage creation behavior:
     - Use --enable-storage flag to enable persistent storage
-    - Storage configuration (storageSize, storageName, mountPath) is read from config.json's deployConfig.service
+    - Storage configuration (storageSize, storageName, mountPath) can be provided in CLI options or config.json
+    - If not provided, API Service will use values from envhub's deployConfig.service
     - When storage is created, replicas must be 1 (enforced by backend)
     - storageClass is configured in helm values.yaml deployment, not in config.json
 
@@ -169,7 +171,7 @@ def create(
     - replicas: Number of replicas (default: 1)
     - port: Service port (default: 8080)
     - enableStorage: Enable storage by default (default: false, CLI --enable-storage overrides)
-    - storageSize: Storage size like "10Gi", "20Gi" (required when --enable-storage is used)
+    - storageSize: Storage size like "10Gi", "20Gi" (used when --enable-storage is set)
     - storageName: Storage name (default: environment name)
     - mountPath: Mount path (default: /home/admin/data)
 
@@ -188,13 +190,13 @@ def create(
         # Create using config.json in current directory
         aenv service create
 
-        # Create with explicit environment name
+        # Create with explicit environment name (API Service will fetch config from envhub)
         aenv service create myapp@1.0.0
 
         # Create with 3 replicas and custom port (no storage)
         aenv service create myapp@1.0.0 --replicas 3 --port 8000
 
-        # Create with storage enabled (storageSize must be in config.json)
+        # Create with storage enabled (storageSize from config.json or envhub)
         aenv service create myapp@1.0.0 --enable-storage
 
         # Create with environment variables
@@ -259,10 +261,11 @@ def create(
         final_storage_size = service_config.get("storageSize")
         if not final_storage_size:
             console.print(
-                "[red]Error:[/red] Storage is enabled but 'storageSize' is not found in config.json's deployConfig.service.\n"
-                "Please add 'storageSize' (e.g., '10Gi', '20Gi') to deployConfig.service in config.json."
+                "[yellow]⚠️  Warning:[/yellow] Storage is enabled but 'storageSize' is not found in local config.json.\n"
+                "   API Service will attempt to fetch storageSize from envhub.\n"
+                "   If not found in envhub either, the service creation will fail."
             )
-            raise click.Abort()
+            # Note: Don't abort here, let API Service try to fetch from envhub
         final_storage_name = service_config.get("storageName")
         final_mount_path = service_config.get("mountPath")
 
@@ -730,11 +733,6 @@ async def _delete():
     type=int,
     help="Update number of replicas",
 )
-@click.option(
-    "--image",
-    type=str,
-    help="Update container image",
-)
 @click.option(
     "--env",
     "-e",
@@ -754,32 +752,28 @@ def update_service(
     cfg: Config,
     service_id: str,
     replicas: Optional[int],
-    image: Optional[str],
     environment_variables: tuple,
     output: str,
 ):
     """Update a running service
 
-    Can update replicas, image, and environment variables.
+    Can update replicas and environment variables.
 
     Examples:
         # Scale to 5 replicas
         aenv service update myapp-svc-abc123 --replicas 5
 
-        # Update image
-        aenv service update myapp-svc-abc123 --image myapp:2.0.0
-
         # Update environment variables
         aenv service update myapp-svc-abc123 -e DB_HOST=newhost -e DB_PORT=3306
 
         # Update multiple things at once
-        aenv service update myapp-svc-abc123 --replicas 3 --image myapp:2.0.0
+        aenv service update myapp-svc-abc123 --replicas 3 -e DB_HOST=newhost
     """
     console = cfg.console.console()
 
-    if not replicas and not image and not environment_variables:
+    if not replicas and not environment_variables:
         console.print(
-            "[red]Error:[/red] At least one of --replicas, --image, or --env must be provided"
+            "[red]Error:[/red] At least one of --replicas or --env must be provided"
         )
         raise click.Abort()
 
@@ -800,8 +794,6 @@ def update_service(
     console.print(f"[cyan]🔄 Updating service:[/cyan] {service_id}")
     if replicas is not None:
         console.print(f"   Replicas: {replicas}")
-    if image:
-        console.print(f"   Image: {image}")
     if env_vars:
         console.print(f"   Environment Variables: {len(env_vars)} variables")
     console.print()
@@ -814,7 +806,6 @@ async def _update():
             return await client.update_env_service(
                 service_id=service_id,
                 replicas=replicas,
-                image=image,
                 environment_variables=env_vars,
             )
 
diff --git a/api-service/controller/env_service.go b/api-service/controller/env_service.go
index 56ab586..819bc69 100644
--- a/api-service/controller/env_service.go
+++ b/api-service/controller/env_service.go
@@ -110,10 +110,24 @@ func (ctrl *EnvServiceController) CreateEnvService(c *gin.Context) {
 	if backendEnv.DeployConfig == nil {
 		backendEnv.DeployConfig = make(map[string]interface{})
 	}
+
+	// Get service config from envhub metadata (support both new nested structure and legacy flat structure)
+	var serviceConfig map[string]interface{}
+	if svc, ok := backendEnv.DeployConfig["service"].(map[string]interface{}); ok {
+		serviceConfig = svc
+	} else {
+		// For backward compatibility, fall back to root deployConfig if service config is empty
+		serviceConfig = backendEnv.DeployConfig
+	}
+
+	// Merge environment variables: CLI request overrides envhub config
 	if req.EnvironmentVariables != nil {
 		backendEnv.DeployConfig["environment_variables"] = req.EnvironmentVariables
 	}
+
+	// Override replicas from request, otherwise use envhub config
 	backendEnv.DeployConfig["replicas"] = req.Replicas
+
 	if req.Owner != "" {
 		backendEnv.DeployConfig["owner"] = req.Owner
 	}
@@ -122,24 +136,34 @@ func (ctrl *EnvServiceController) CreateEnvService(c *gin.Context) {
 		backendEnv.DeployConfig["serviceName"] = req.ServiceName
 	}
 
-	// Storage configuration
+	// Storage configuration: request overrides envhub config
+	// If request doesn't provide storageSize but envhub has it in service config, use envhub's value
+	if req.StorageSize != "" {
+		backendEnv.DeployConfig["storageSize"] = req.StorageSize
+	} else if storageSize, ok := serviceConfig["storageSize"].(string); ok {
+		backendEnv.DeployConfig["storageSize"] = storageSize
+	}
+
 	if req.PVCName != "" {
 		backendEnv.DeployConfig["pvcName"] = req.PVCName
+	} else if pvcName, ok := serviceConfig["storageName"].(string); ok {
+		backendEnv.DeployConfig["pvcName"] = pvcName
 	}
+
 	if req.MountPath != "" {
 		backendEnv.DeployConfig["mountPath"] = req.MountPath
-	}
-	// storageClass is now configured in helm values.yaml, not passed via API
-	if req.StorageSize != "" {
-		backendEnv.DeployConfig["storageSize"] = req.StorageSize
+	} else if mountPath, ok := serviceConfig["mountPath"].(string); ok {
+		backendEnv.DeployConfig["mountPath"] = mountPath
 	}
 
-	// Service configuration
+	// Service configuration: request overrides envhub config
 	if req.Port > 0 {
 		backendEnv.DeployConfig["port"] = req.Port
+	} else if port, ok := serviceConfig["port"].(float64); ok {
+		backendEnv.DeployConfig["port"] = int32(port)
 	}
 
-	// Resource configuration
+	// Resource configuration: request overrides envhub config
 	if req.CPURequest != "" {
 		backendEnv.DeployConfig["cpuRequest"] = req.CPURequest
 	}
@@ -216,7 +240,6 @@ func (ctrl *EnvServiceController) DeleteEnvService(c *gin.Context) {
 // UpdateEnvServiceRequest represents the request body for updating an EnvService
 type UpdateEnvServiceRequest struct {
 	Replicas             *int32             `json:"replicas,omitempty"`
-	Image                *string            `json:"image,omitempty"`
 	EnvironmentVariables *map[string]string `json:"environment_variables,omitempty"`
 }
 
@@ -238,7 +261,6 @@ func (ctrl *EnvServiceController) UpdateEnvService(c *gin.Context) {
 	// Build update request
 	updateReq := &service.UpdateServiceRequest{
 		Replicas:             req.Replicas,
-		Image:                req.Image,
 		EnvironmentVariables: req.EnvironmentVariables,
 	}
 
diff --git a/api-service/service/schedule_client.go b/api-service/service/schedule_client.go
index 1541e3e..83ce79a 100644
--- a/api-service/service/schedule_client.go
+++ b/api-service/service/schedule_client.go
@@ -346,7 +346,6 @@ func (c *ScheduleClient) DeleteService(serviceName string, deleteStorage bool) (
 // UpdateServiceRequest represents the request body for updating a service
 type UpdateServiceRequest struct {
 	Replicas             *int32             `json:"replicas,omitempty"`
-	Image                *string            `json:"image,omitempty"`
 	EnvironmentVariables *map[string]string `json:"environment_variables,omitempty"`
 }
 
diff --git a/controller/pkg/aenvhub_http_server/aenv_service_handler.go b/controller/pkg/aenvhub_http_server/aenv_service_handler.go
index 243a18f..6c36dba 100644
--- a/controller/pkg/aenvhub_http_server/aenv_service_handler.go
+++ b/controller/pkg/aenvhub_http_server/aenv_service_handler.go
@@ -553,11 +553,10 @@ func (h *AEnvServiceHandler) deleteService(serviceName string, w http.ResponseWr
 	}
 }
 
-// updateService updates a service (replicas, image, env vars)
+// updateService updates a service (replicas, env vars)
 func (h *AEnvServiceHandler) updateService(serviceName string, w http.ResponseWriter, r *http.Request) {
 	var updateReq struct {
 		Replicas             *int32             `json:"replicas,omitempty"`
-		Image                *string            `json:"image,omitempty"`
 		EnvironmentVariables *map[string]string `json:"environment_variables,omitempty"`
 	}
 
@@ -584,13 +583,6 @@ func (h *AEnvServiceHandler) updateService(serviceName string, w http.ResponseWr
 		deployment.Spec.Replicas = updateReq.Replicas
 	}
 
-	// Update image
-	if updateReq.Image != nil && *updateReq.Image != "" {
-		for i := range deployment.Spec.Template.Spec.Containers {
-			deployment.Spec.Template.Spec.Containers[i].Image = *updateReq.Image
-		}
-	}
-
 	// Update environment variables
 	if updateReq.EnvironmentVariables != nil {
 		for i := range deployment.Spec.Template.Spec.Containers {
diff --git a/docs/guide/cli.md b/docs/guide/cli.md
index a88df6a..11d0545 100644
--- a/docs/guide/cli.md
+++ b/docs/guide/cli.md
@@ -726,14 +726,11 @@ Update a running service's configuration.
 # Scale to 5 replicas
 aenv service update myapp-svc-abc123 --replicas 5
 
-# Update image
-aenv service update myapp-svc-abc123 --image myapp:2.0.0
-
 # Update environment variables
 aenv service update myapp-svc-abc123 -e DB_HOST=newhost -e DB_PORT=3306
 
 # Update multiple things at once
-aenv service update myapp-svc-abc123 --replicas 3 --image myapp:2.0.0
+aenv service update myapp-svc-abc123 --replicas 3 -e DB_HOST=newhost
 ```
 
 **Options:**
@@ -741,13 +738,12 @@ aenv service update myapp-svc-abc123 --replicas 3 --image myapp:2.0.0
 | Option | Short | Description |
 |---|---|---|
 | `--replicas` | `-r` | Update number of replicas |
-| `--image` | | Update container image |
 | `--env` | `-e` | Environment variables (KEY=VALUE) |
 | `--output` | `-o` | Output format (table/json) |
 
 **Important Notes:**
 
-- At least one of `--replicas`, `--image`, or `--env` must be provided
+- At least one of `--replicas` or `--env` must be provided
 - Environment variable updates merge with existing variables
 
 ### `aenv get` - Get Environment Details