fix(BA-725): Increase Backend.AI Kernel's app startup timeout (#3672) (#3679)

Author: MintCat98

changes/3679.fix.md

@@ -0,0 +1 @@
+Increase Backend.AI Kernel's app startup timeout

src/ai/backend/kernel/base.py

@@ -862,7 +862,7 @@ async def _start_service(
                         self.services_running[service_info["name"]] = proc
                         asyncio.create_task(self._wait_service_proc(service_info["name"], proc))
                         if not do_not_wait:
-                            async with asyncio.timeout(5.0):
+                            async with asyncio.timeout(30.0):
                                 await wait_local_port_open(service_info["port"])
                         log.info(
                             "Service {} has started (pid: {}, port: {})",