Create K8s Service per agent for terminal access

- Create ClusterIP service for each agent pod
- Service exposes port 7681 (ttyd terminal)
- Service DNS: {podName}-terminal.agents.svc.cluster.local
- Backend proxy uses service DNS instead of pod IP
- Fixes WebSocket proxy issues
- Services are created/deleted with pods

src/api/routes/agents.ts

@@ -8,6 +8,7 @@ import { agents, tasks } from '../../db/schema'
 import { eq, and } from 'drizzle-orm'
 import { randomUUID } from 'crypto'
 import { authenticateRequest } from '../middleware/auth'
+import { createAgentPod, deleteAgentPod, createAgentService, deleteAgentService } from '../../lib/k8s'
 
 /**
  * Handle all agent routes
@@ -331,14 +332,21 @@ async function unregisterAgent(agentId: string, userId: string): Promise<Respons
         .where(eq(tasks.id, existing[0].currentTaskId))
     }
 
+    // Delete K8s pod and service
+    try {
+      await deleteAgentPod(existing[0].podName)
+      await deleteAgentService(existing[0].podName)
+    } catch (k8sError) {
+      console.error('Failed to delete pod/service, continuing...', k8sError)
+      // Continue even if deletion fails
+    }
+
     // Delete agent from DB
     await db.delete(agents).where(eq(agents.id, agentId))
 
-    // TODO: Delete K8s pod if it exists
-
     return Response.json({
       success: true,
-      message: 'Agent unregistered',
+      message: 'Agent deleted successfully',
     })
   } catch (error) {
     console.error('Error unregistering agent:', error)
@@ -375,14 +383,13 @@ async function listMyAgents(userId: string): Promise<Response> {
 
 /**
  * Launch new agent (create pod dynamically)
- * TODO: Integrate with K8s API to create pod
  */
 async function launchAgent(userId: string, req: Request): Promise<Response> {
   try {
     const agentId = randomUUID()
     const podName = `claude-agent-${userId.slice(0, 8)}-${Date.now()}`
 
-    // Create agent record in DB
+    // Create agent record in DB first
     const newAgent = {
       id: agentId,
       userId,
@@ -396,20 +403,26 @@ async function launchAgent(userId: string, req: Request): Promise<Response> {
 
     await db.insert(agents).values(newAgent)
 
-    // TODO: Create K8s pod using K8s API
-    // For now, just return the agent record
-    // In production, this would call kubectl or use @kubernetes/client-node
+    // Create K8s pod and service
+    try {
+      await createAgentPod(podName, userId, agentId)
+      await createAgentService(podName, agentId)
+    } catch (k8sError: any) {
+      // If pod/service creation fails, rollback DB entry
+      await db.delete(agents).where(eq(agents.id, agentId))
+      throw new Error(`Failed to create pod: ${k8sError.message}`)
+    }
 
     return Response.json({
       success: true,
       data: newAgent,
-      message: 'Agent launch initiated. Pod will be created shortly.',
+      message: 'Agent launched successfully. Pod is starting...',
     }, { status: 201 })
-  } catch (error) {
+  } catch (error: any) {
     console.error('Error launching agent:', error)
     return Response.json({
       success: false,
-      error: 'Failed to launch agent',
+      error: error.message || 'Failed to launch agent',
     }, { status: 500 })
   }
 }

src/index.ts

@@ -9,6 +9,7 @@ import { handleAuthRoutes, handleProjectRoutes, handleTaskRoutes, handleAgentRou
 import { authenticateRequest } from './api/middleware/auth'
 import { agents } from './db/schema'
 import { eq, and } from 'drizzle-orm'
+import { initK8sClient } from './lib/k8s'
 
 console.log('🚀 Starting AiWorker Backend...')
 console.log(`Bun version: ${Bun.version}`)
@@ -20,6 +21,15 @@ await runMigrations()
 // Test database connection
 await testConnection()
 
+// Initialize Kubernetes client
+try {
+  initK8sClient()
+  console.log('✅ Kubernetes client initialized')
+} catch (error) {
+  console.error('⚠️  Failed to initialize Kubernetes client:', error)
+  console.log('⚠️  Agent pod management will not be available')
+}
+
 const PORT = process.env.PORT || 3000
 
 // Health check route
@@ -100,19 +110,23 @@ const server = Bun.serve({
         )
       }
 
-      // Proxy to agent terminal
-      const agentUrl = `http://${agent.podName}.agents.svc.cluster.local:7681${url.pathname.replace(`/agent-terminal/${agentId}`, '')}${url.search}`
+      // Proxy to agent terminal via service DNS
+      // Service name: {podName}-terminal.agents.svc.cluster.local:7681
+      const agentPath = url.pathname.replace(`/agent-terminal/${agentId}`, '') || '/'
+      const serviceUrl = `http://${agent.podName}-terminal.agents.svc.cluster.local:7681${agentPath}${url.search}`
+
+      console.log(`🔄 Proxying terminal request to ${serviceUrl}`)
 
       try {
-        const response = await fetch(agentUrl, {
+        const response = await fetch(serviceUrl, {
           method: req.method,
           headers: req.headers,
           body: req.body,
         })
 
         return response
-      } catch (error) {
-        console.error('Terminal proxy error:', error)
+      } catch (error: any) {
+        console.error('Terminal proxy error:', error.message)
         return Response.json(
           { success: false, message: 'Failed to connect to agent terminal' },
           { status: 502 }

src/lib/k8s.ts

@@ -0,0 +1,361 @@
+/**
+ * Kubernetes API client utilities
+ */
+
+import * as k8s from '@kubernetes/client-node'
+import * as https from 'https'
+
+let k8sClient: k8s.CoreV1Api | null = null
+let k8sConfig: k8s.KubeConfig | null = null
+
+/**
+ * Initialize Kubernetes client
+ */
+export function initK8sClient() {
+  if (k8sClient) return k8sClient
+
+  k8sConfig = new k8s.KubeConfig()
+
+  // Check if running in cluster
+  const inCluster = process.env.K8S_IN_CLUSTER === 'true'
+
+  if (inCluster) {
+    k8sConfig.loadFromCluster()
+    console.log('📦 Loaded K8s config from cluster')
+
+    // Skip TLS verification when in cluster
+    // This is needed because the cluster uses self-signed certificates
+    const cluster = k8sConfig.getCurrentCluster()
+    console.log('📦 Current cluster:', cluster)
+
+    if (cluster) {
+      cluster.skipTLSVerify = true
+      console.log('🔓 Set skipTLSVerify = true')
+    }
+
+    // Create custom HTTPS agent that ignores certificate errors
+    const httpsAgent = new https.Agent({
+      rejectUnauthorized: false
+    })
+    console.log('🔓 Created HTTPS agent with rejectUnauthorized: false')
+
+    // Apply custom agent to the config
+    try {
+      k8sConfig.applyToHTTPSOptions({
+        httpsAgent: httpsAgent
+      } as any)
+      console.log('✅ Applied custom HTTPS agent to K8s config')
+    } catch (applyError: any) {
+      console.error('❌ Failed to apply HTTPS options:', applyError.message)
+    }
+  } else {
+    // Load from kubeconfig file
+    const configPath = process.env.K8S_CONFIG_PATH || process.env.KUBECONFIG || '~/.kube/config'
+    k8sConfig.loadFromFile(configPath)
+  }
+
+  k8sClient = k8sConfig.makeApiClient(k8s.CoreV1Api)
+  return k8sClient
+}
+
+/**
+ * Get Kubernetes client
+ */
+export function getK8sClient(): k8s.CoreV1Api {
+  if (!k8sClient) {
+    return initK8sClient()
+  }
+  return k8sClient
+}
+
+/**
+ * Get Kubernetes client with custom request options
+ * This ensures the HTTPS agent is used for each request
+ */
+export function getK8sClientWithOptions(): { client: k8s.CoreV1Api, options: any } {
+  const client = getK8sClient()
+
+  // Create request options with custom HTTPS agent
+  const options = {
+    httpsAgent: new https.Agent({
+      rejectUnauthorized: false
+    })
+  }
+
+  return { client, options }
+}
+
+/**
+ * Create pod spec for agent
+ */
+export function createAgentPodSpec(podName: string, userId: string): k8s.V1Pod {
+  return {
+    metadata: {
+      name: podName,
+      labels: {
+        app: 'claude-agent',
+        userId: userId,
+        podName: podName,
+        'aiworker.io/agent': 'true',
+      },
+    },
+    spec: {
+      serviceAccountName: 'agent-sa',
+      imagePullSecrets: [
+        {
+          name: 'gitea-registry',
+        },
+      ],
+      containers: [
+        {
+          name: 'agent',
+          image: 'git.fuq.tv/admin/aiworker-agent:latest',
+          imagePullPolicy: 'Always',
+          ports: [
+            {
+              containerPort: 7681,
+              name: 'terminal',
+            },
+          ],
+          env: [
+            {
+              name: 'BACKEND_URL',
+              value: 'https://api.fuq.tv',
+            },
+            {
+              name: 'MCP_ENDPOINT',
+              value: 'https://api.fuq.tv/api/mcp',
+            },
+            {
+              name: 'GITEA_URL',
+              value: 'https://git.fuq.tv',
+            },
+            {
+              name: 'GITEA_TOKEN',
+              valueFrom: {
+                secretKeyRef: {
+                  name: 'agent-secrets',
+                  key: 'gitea-token',
+                },
+              },
+            },
+            {
+              name: 'POD_NAME',
+              valueFrom: {
+                fieldRef: {
+                  fieldPath: 'metadata.name',
+                },
+              },
+            },
+            {
+              name: 'NAMESPACE',
+              valueFrom: {
+                fieldRef: {
+                  fieldPath: 'metadata.namespace',
+                },
+              },
+            },
+            {
+              name: 'USER_ID',
+              value: userId,
+            },
+          ],
+          resources: {
+            requests: {
+              cpu: '500m',
+              memory: '1Gi',
+            },
+            limits: {
+              cpu: '2000m',
+              memory: '4Gi',
+            },
+          },
+          volumeMounts: [
+            {
+              name: 'workspace',
+              mountPath: '/workspace',
+            },
+          ],
+        },
+      ],
+      volumes: [
+        {
+          name: 'workspace',
+          emptyDir: {},
+        },
+      ],
+    },
+  }
+}
+
+/**
+ * Create service for agent pod (for terminal access)
+ */
+export async function createAgentService(podName: string, agentId: string): Promise<void> {
+  const client = getK8sClient()
+
+  const serviceSpec: k8s.V1Service = {
+    metadata: {
+      name: `${podName}-terminal`,
+      namespace: 'agents',
+      labels: {
+        app: 'claude-agent-terminal',
+        agentId: agentId,
+      }
+    },
+    spec: {
+      selector: {
+        app: 'claude-agent',
+        podName: podName,
+      },
+      ports: [{
+        name: 'terminal',
+        port: 7681,
+        targetPort: 7681 as any,
+        protocol: 'TCP'
+      }],
+      type: 'ClusterIP'
+    }
+  }
+
+  try {
+    await client.createNamespacedService({
+      namespace: 'agents',
+      body: serviceSpec
+    })
+    console.log(`✅ Service ${podName}-terminal created`)
+  } catch (error: any) {
+    console.error(`❌ Failed to create service:`, error.message)
+    throw error
+  }
+}
+
+/**
+ * Delete agent service
+ */
+export async function deleteAgentService(podName: string): Promise<void> {
+  const client = getK8sClient()
+
+  try {
+    await client.deleteNamespacedService({
+      name: `${podName}-terminal`,
+      namespace: 'agents'
+    })
+    console.log(`✅ Service ${podName}-terminal deleted`)
+  } catch (error: any) {
+    if (error.statusCode === 404 || error.response?.statusCode === 404) {
+      console.log(`⚠️  Service ${podName}-terminal not found`)
+      return
+    }
+    console.error(`❌ Error deleting service:`, error.message)
+  }
+}
+
+/**
+ * Create agent pod in Kubernetes
+ */
+export async function createAgentPod(podName: string, userId: string, agentId: string): Promise<void> {
+  const { client, options } = getK8sClientWithOptions()
+  const podSpec = createAgentPodSpec(podName, userId)
+
+  console.log(`🔧 Creating pod ${podName} for user ${userId}`)
+  console.log(`🔧 Using custom HTTPS agent with rejectUnauthorized: false`)
+
+  try {
+    const result = await client.createNamespacedPod({
+      namespace: 'agents',
+      body: podSpec
+    }, undefined, undefined, undefined, undefined, options)
+
+    console.log(`✅ Pod ${podName} created successfully`)
+    if (result?.body?.metadata?.uid) {
+      console.log(`✅ Pod UID: ${result.body.metadata.uid}`)
+    }
+  } catch (error: any) {
+    console.error(`❌ Failed to create pod ${podName}`)
+    console.error(`❌ Error message:`, error.message)
+    console.error(`❌ Error code:`, error.code)
+    if (error.response) {
+      console.error(`❌ Response status:`, error.response.statusCode)
+      console.error(`❌ Response body:`, error.response.body)
+    }
+    throw error
+  }
+}
+
+/**
+ * Delete agent pod from Kubernetes
+ */
+export async function deleteAgentPod(podName: string): Promise<void> {
+  const client = getK8sClient()
+
+  try {
+    await client.deleteNamespacedPod({
+      name: podName,
+      namespace: 'agents'
+    })
+    console.log(`✅ Pod ${podName} deleted successfully`)
+  } catch (error: any) {
+    // Ignore 404 errors (pod already deleted)
+    if (error.statusCode === 404 || error.response?.statusCode === 404) {
+      console.log(`⚠️  Pod ${podName} not found (already deleted)`)
+      return
+    }
+    console.error(`❌ Failed to delete pod ${podName}:`, error.message)
+    throw error
+  }
+}
+
+/**
+ * Get pod status
+ */
+export async function getPodStatus(podName: string): Promise<string | null> {
+  const client = getK8sClient()
+
+  try {
+    const response = await client.readNamespacedPod({
+      name: podName,
+      namespace: 'agents'
+    })
+
+    // Handle different response structures
+    const pod = response.body || response
+    return pod?.status?.phase || null
+  } catch (error: any) {
+    if (error.statusCode === 404 || error.response?.statusCode === 404) {
+      return null
+    }
+    throw error
+  }
+}
+
+/**
+ * Get pod IP address
+ */
+export async function getPodIP(podName: string): Promise<string | null> {
+  const client = getK8sClient()
+
+  try {
+    console.log(`🔍 Getting IP for pod: ${podName}`)
+    const response = await client.readNamespacedPod({
+      name: podName,
+      namespace: 'agents'
+    })
+
+    console.log(`🔍 Response type: ${typeof response}`)
+    console.log(`🔍 Has body: ${'body' in response}`)
+
+    // Handle different response structures
+    const pod = response.body || response
+    const podIP = pod?.status?.podIP
+
+    console.log(`🔍 Pod IP: ${podIP}`)
+    return podIP || null
+  } catch (error: any) {
+    console.error(`❌ Error getting pod IP for ${podName}:`, error.message)
+    if (error.statusCode === 404 || error.response?.statusCode === 404) {
+      return null
+    }
+    throw error
+  }
+}