feat(proxmox): support node-level routes and journalctl access

This change enables Proxmox node-level operations without requiring a specific
LXC container VMID.

**Features added:**
- New `/proxmox/journalctl/{node}` API endpoint for streaming node journalctl
- Route configuration support for Proxmox nodes (VMID = 0)
- `ReverseLookupNode` function for node discovery by hostname/IP/alias
- `NodeJournalctl` method for executing journalctl on nodes

**Behavior changes:**
- VMID parameter in journalctl endpoints is now optional
- Routes targeting nodes (without specific containers) are now valid

**Bug fixes:**
- Fixed error message variable reference in route validation

internal/api/handler.go

@@ -146,6 +146,7 @@ func NewHandler(requireAuth bool) *gin.Engine {
 
 		proxmox := v1.Group("/proxmox")
 		{
+			proxmox.GET("/journalctl/:node", proxmoxApi.Journalctl)
 			proxmox.GET("/journalctl/:node/:vmid", proxmoxApi.Journalctl)
 			proxmox.GET("/journalctl/:node/:vmid/:service", proxmoxApi.Journalctl)
 			proxmox.GET("/stats/:node/:vmid", proxmoxApi.Stats)

internal/api/v1/docs/swagger.json

@@ -2077,9 +2077,9 @@
         "operationId": "uptime"
       }
     },
-    "/proxmox/journalctl/{node}/{vmid}": {
+    "/proxmox/journalctl/{node}": {
       "get": {
-        "description": "Get journalctl output",
+        "description": "Get journalctl output for node or LXC container. If vmid is not provided, streams node journalctl.",
         "consumes": [
           "application/json"
         ],
@@ -2094,19 +2094,85 @@
         "parameters": [
           {
             "type": "string",
+            "description": "Node name",
             "name": "node",
             "in": "path",
             "required": true
           },
           {
             "type": "integer",
-            "name": "vmid",
+            "description": "Limit output lines (1-1000)",
+            "name": "limit",
+            "in": "query"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Journalctl output",
+            "schema": {
+              "type": "string"
+            }
+          },
+          "400": {
+            "description": "Invalid request",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          },
+          "403": {
+            "description": "Unauthorized",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          },
+          "404": {
+            "description": "Node not found",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          },
+          "500": {
+            "description": "Internal server error",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-id": "journalctl",
+        "operationId": "journalctl"
+      }
+    },
+    "/proxmox/journalctl/{node}/{vmid}": {
+      "get": {
+        "description": "Get journalctl output for node or LXC container. If vmid is not provided, streams node journalctl.",
+        "consumes": [
+          "application/json"
+        ],
+        "produces": [
+          "application/json"
+        ],
+        "tags": [
+          "proxmox",
+          "websocket"
+        ],
+        "summary": "Get journalctl output",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "Node name",
+            "name": "node",
             "in": "path",
             "required": true
           },
           {
             "type": "integer",
-            "description": "limit",
+            "description": "Container VMID (optional - if not provided, streams node journalctl)",
+            "name": "vmid",
+            "in": "path"
+          },
+          {
+            "type": "integer",
+            "description": "Limit output lines (1-1000)",
             "name": "limit",
             "in": "query"
           }
@@ -2149,7 +2215,7 @@
     },
     "/proxmox/journalctl/{node}/{vmid}/{service}": {
       "get": {
-        "description": "Get journalctl output",
+        "description": "Get journalctl output for node or LXC container. If vmid is not provided, streams node journalctl.",
         "consumes": [
           "application/json"
         ],
@@ -2164,24 +2230,26 @@
         "parameters": [
           {
             "type": "string",
+            "description": "Node name",
             "name": "node",
             "in": "path",
             "required": true
           },
+          {
+            "type": "integer",
+            "description": "Container VMID (optional - if not provided, streams node journalctl)",
+            "name": "vmid",
+            "in": "path"
+          },
           {
             "type": "string",
+            "description": "Service name (e.g., 'pveproxy' for node, 'container@.service' format for LXC)",
             "name": "service",
             "in": "path"
           },
           {
             "type": "integer",
-            "name": "vmid",
-            "in": "path",
-            "required": true
-          },
-          {
-            "type": "integer",
-            "description": "limit",
+            "description": "Limit output lines (1-1000)",
             "name": "limit",
             "in": "query"
           }

internal/api/v1/docs/swagger.yaml

@@ -3361,21 +3361,67 @@ paths:
       - metrics
       - websocket
       x-id: uptime
+  /proxmox/journalctl/{node}:
+    get:
+      consumes:
+      - application/json
+      description: Get journalctl output for node or LXC container. If vmid is not
+        provided, streams node journalctl.
+      parameters:
+      - description: Node name
+        in: path
+        name: node
+        required: true
+        type: string
+      - description: Limit output lines (1-1000)
+        in: query
+        name: limit
+        type: integer
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: Journalctl output
+          schema:
+            type: string
+        "400":
+          description: Invalid request
+          schema:
+            $ref: '#/definitions/ErrorResponse'
+        "403":
+          description: Unauthorized
+          schema:
+            $ref: '#/definitions/ErrorResponse'
+        "404":
+          description: Node not found
+          schema:
+            $ref: '#/definitions/ErrorResponse'
+        "500":
+          description: Internal server error
+          schema:
+            $ref: '#/definitions/ErrorResponse'
+      summary: Get journalctl output
+      tags:
+      - proxmox
+      - websocket
+      x-id: journalctl
   /proxmox/journalctl/{node}/{vmid}:
     get:
       consumes:
       - application/json
-      description: Get journalctl output
+      description: Get journalctl output for node or LXC container. If vmid is not
+        provided, streams node journalctl.
       parameters:
-      - in: path
+      - description: Node name
+        in: path
         name: node
         required: true
         type: string
-      - in: path
+      - description: Container VMID (optional - if not provided, streams node journalctl)
+        in: path
         name: vmid
-        required: true
         type: integer
-      - description: limit
+      - description: Limit output lines (1-1000)
         in: query
         name: limit
         type: integer
@@ -3411,20 +3457,24 @@ paths:
     get:
       consumes:
       - application/json
-      description: Get journalctl output
+      description: Get journalctl output for node or LXC container. If vmid is not
+        provided, streams node journalctl.
       parameters:
-      - in: path
+      - description: Node name
+        in: path
         name: node
         required: true
         type: string
-      - in: path
+      - description: Container VMID (optional - if not provided, streams node journalctl)
+        in: path
+        name: vmid
+        type: integer
+      - description: Service name (e.g., 'pveproxy' for node, 'container@.service'
+          format for LXC)
+        in: path
         name: service
         type: string
-      - in: path
-        name: vmid
-        required: true
-        type: integer
-      - description: limit
+      - description: Limit output lines (1-1000)
         in: query
         name: limit
         type: integer

internal/api/v1/proxmox/journalctl.go

@@ -12,7 +12,7 @@ import (
 
 type JournalctlRequest struct {
 	Node    string `uri:"node" binding:"required"`
-	VMID    int    `uri:"vmid" binding:"required"`
+	VMID    *int   `uri:"vmid"` // optional - if not provided, streams node journalctl
 	Service string `uri:"service"`
 	Limit   int    `query:"limit" binding:"omitempty,min=1,max=1000"`
 }
@@ -20,17 +20,20 @@ type JournalctlRequest struct {
 // @x-id				"journalctl"
 // @BasePath		/api/v1
 // @Summary		Get journalctl output
-// @Description	Get journalctl output
+// @Description	Get journalctl output for node or LXC container. If vmid is not provided, streams node journalctl.
 // @Tags			proxmox,websocket
 // @Accept			json
 // @Produce		application/json
-// @Param			path		path		JournalctlRequest	true	"Request"
-// @Param			limit		query  	int	false	"limit"
-// @Success		200			string		plain	"Journalctl output"
+// @Param			node		path		string	true	"Node name"
+// @Param			vmid		path		int		  false	"Container VMID (optional - if not provided, streams node journalctl)"
+// @Param			service	path		string	false	"Service name (e.g., 'pveproxy' for node, 'container@.service' format for LXC)"
+// @Param			limit		query		int		  false	"Limit output lines (1-1000)"
+// @Success		200			string	plain	  "Journalctl output"
 // @Failure		400			{object}	apitypes.ErrorResponse	"Invalid request"
 // @Failure		403			{object}	apitypes.ErrorResponse	"Unauthorized"
 // @Failure		404			{object}	apitypes.ErrorResponse	"Node not found"
 // @Failure		500			{object}	apitypes.ErrorResponse	"Internal server error"
+// @Router		/proxmox/journalctl/{node} [get]
 // @Router		/proxmox/journalctl/{node}/{vmid} [get]
 // @Router		/proxmox/journalctl/{node}/{vmid}/{service} [get]
 func Journalctl(c *gin.Context) {
@@ -53,7 +56,12 @@ func Journalctl(c *gin.Context) {
 	}
 	defer manager.Close()
 
-	reader, err := node.LXCJournalctl(c.Request.Context(), request.VMID, request.Service, request.Limit)
+	var reader io.ReadCloser
+	if request.VMID == nil {
+		reader, err = node.NodeJournalctl(c.Request.Context(), request.Service, request.Limit)
+	} else {
+		reader, err = node.LXCJournalctl(c.Request.Context(), *request.VMID, request.Service, request.Limit)
+	}
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to get journalctl output"))
 		return

internal/proxmox/client.go

@@ -147,6 +147,34 @@ func (c *Client) ReverseLookupResource(ip net.IP, hostname string, alias string)
 	return nil, ErrResourceNotFound
 }
 
+// ReverseLookupNode looks up a node by name or IP address.
+// Returns the node name if found.
+func (c *Client) ReverseLookupNode(hostname string, ip net.IP, alias string) string {
+	shouldCheckHostname := hostname != ""
+	shouldCheckIP := ip != nil && !ip.IsLoopback() && !ip.IsUnspecified()
+	shouldCheckAlias := alias != ""
+
+	if shouldCheckHostname {
+		hostname, _, _ = strings.Cut(hostname, ".")
+	}
+
+	for _, node := range c.Cluster.Nodes {
+		if shouldCheckHostname && node.Name == hostname {
+			return node.Name
+		}
+		if shouldCheckIP {
+			nodeIP := net.ParseIP(node.IP)
+			if nodeIP != nil && nodeIP.Equal(ip) {
+				return node.Name
+			}
+		}
+		if shouldCheckAlias && node.Name == alias {
+			return node.Name
+		}
+	}
+	return ""
+}
+
 // Key implements pool.Object
 func (c *Client) Key() string {
 	return c.Cluster.ID

internal/proxmox/node.go

@@ -186,3 +186,14 @@ func (n *Node) NodeCommand(ctx context.Context, command string) (io.ReadCloser,
 
 	return pr, nil
 }
+
+func (n *Node) NodeJournalctl(ctx context.Context, service string, limit int) (io.ReadCloser, error) {
+	command := "journalctl -f"
+	if service != "" {
+		command = fmt.Sprintf("journalctl -u %q -f", service)
+	}
+	if limit > 0 {
+		command = fmt.Sprintf("%s -n %d", command, limit)
+	}
+	return n.NodeCommand(ctx, command)
+}

internal/route/route.go

@@ -196,68 +196,68 @@ func (r *Route) validate() gperr.Error {
 		if nodeName == "" {
 			return gperr.Errorf("node (proxmox node name) is required")
 		}
-		if vmid <= 0 {
-			return gperr.Errorf("vmid (lxc id) is required")
-		}
 
 		node, ok := proxmox.Nodes.Get(nodeName)
 		if !ok {
-			return gperr.Errorf("proxmox node %s not found in pool", node)
+			return gperr.Errorf("proxmox node %s not found in pool", nodeName)
 		}
 
-		res, err := node.Client().GetResource("lxc", vmid)
-		if err != nil {
-			return gperr.Wrap(err) // ErrResourceNotFound
-		}
-
-		r.Proxmox.VMName = res.Name
-
-		if r.Host == DefaultHost {
-			containerName := r.Idlewatcher.ContainerName()
-			// get ip addresses of the vmid
-
-			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-			defer cancel()
-
-			ips := res.IPs
-			if len(ips) == 0 {
-				return gperr.Multiline().
-					Addf("no ip addresses found for %s", containerName).
-					Adds("make sure you have set static ip address for container instead of dhcp").
-					Subject(containerName)
-			}
-
-			l := log.With().Str("container", containerName).Logger()
-
-			l.Info().Msg("checking if container is running")
-			running, err := node.LXCIsRunning(ctx, vmid)
+		// Node-level route (VMID = 0) - no container control needed
+		if vmid > 0 {
+			res, err := node.Client().GetResource("lxc", vmid)
 			if err != nil {
-				return gperr.New("failed to check container state").With(err)
+				return gperr.Wrap(err) // ErrResourceNotFound
 			}
 
-			if !running {
-				l.Info().Msg("starting container")
-				if err := node.LXCAction(ctx, vmid, proxmox.LXCStart); err != nil {
-					return gperr.New("failed to start container").With(err)
-				}
-			}
+			r.Proxmox.VMName = res.Name
 
-			l.Info().Msgf("finding reachable ip addresses")
-			errs := gperr.NewBuilder("failed to find reachable ip addresses")
-			for _, ip := range ips {
-				if err := netutils.PingTCP(ctx, ip, r.Port.Proxy); err != nil {
-					errs.Add(gperr.Unwrap(err).Subjectf("%s:%d", ip, r.Port.Proxy))
-				} else {
-					r.Host = ip.String()
-					l.Info().Msgf("using ip %s", r.Host)
-					break
-				}
-			}
 			if r.Host == DefaultHost {
-				return gperr.Multiline().
-					Addf("no reachable ip addresses found, tried %d IPs", len(ips)).
-					With(errs.Error()).
-					Subject(containerName)
+				containerName := r.Idlewatcher.ContainerName()
+				// get ip addresses of the vmid
+
+				ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+				defer cancel()
+
+				ips := res.IPs
+				if len(ips) == 0 {
+					return gperr.Multiline().
+						Addf("no ip addresses found for %s", containerName).
+						Adds("make sure you have set static ip address for container instead of dhcp").
+						Subject(containerName)
+				}
+
+				l := log.With().Str("container", containerName).Logger()
+
+				l.Info().Msg("checking if container is running")
+				running, err := node.LXCIsRunning(ctx, vmid)
+				if err != nil {
+					return gperr.New("failed to check container state").With(err)
+				}
+
+				if !running {
+					l.Info().Msg("starting container")
+					if err := node.LXCAction(ctx, vmid, proxmox.LXCStart); err != nil {
+						return gperr.New("failed to start container").With(err)
+					}
+				}
+
+				l.Info().Msgf("finding reachable ip addresses")
+				errs := gperr.NewBuilder("failed to find reachable ip addresses")
+				for _, ip := range ips {
+					if err := netutils.PingTCP(ctx, ip, r.Port.Proxy); err != nil {
+						errs.Add(gperr.Unwrap(err).Subjectf("%s:%d", ip, r.Port.Proxy))
+					} else {
+						r.Host = ip.String()
+						l.Info().Msgf("using ip %s", r.Host)
+						break
+					}
+				}
+				if r.Host == DefaultHost {
+					return gperr.Multiline().
+						Addf("no reachable ip addresses found, tried %d IPs", len(ips)).
+						With(errs.Error()).
+						Subject(containerName)
+				}
 			}
 		}
 	}
@@ -337,8 +337,21 @@ func (r *Route) validate() gperr.Error {
 			hostname := r.ProxyURL.Hostname()
 			ip := net.ParseIP(hostname)
 			for _, p := range config.WorkingState.Load().Value().Providers.Proxmox {
+				// First check if hostname, IP, or alias matches a node (node-level route)
+				if nodeName := p.Client().ReverseLookupNode(hostname, ip, r.Alias); nodeName != "" {
+					r.Proxmox = &proxmox.NodeConfig{
+						Node:   nodeName,
+						VMID:   0, // node-level route, no specific VM
+						VMName: "",
+					}
+					log.Info().
+						Str("node", nodeName).
+						Msgf("found proxmox node for route %q", r.Alias)
+					break
+				}
+
+				// Then check if hostname, IP, or alias matches a VM resource
 				resource, _ := p.Client().ReverseLookupResource(ip, hostname, r.Alias)
-				// reverse lookup resource by ip address, hostname or alias
 				if resource != nil {
 					r.Proxmox = &proxmox.NodeConfig{
 						Node:   resource.Node,