OS Manuals

/opt/latest/bin/ui_backend_service

Metadata tracking and UI service for Metaflow (FIPS-enabled)

From metaflow-service-fips 2.6.1-r5 (enterprise-packages), captured 2026-11-08 by running ui_backend_service --help (exit 1) · terse output. permalink

ERROR:AsyncPostgresDB:ui:Exception occurred
Traceback (most recent call last):
  File "/opt/latest/lib/python3.11/site-packages/services/data/postgres_async_db.py", line 125, in _init
    self.pool = await aiopg.create_pool(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 300, in from_pool_fill
    await self._fill_free_pool(False)
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 336, in _fill_free_pool
    conn = await connect(
           ^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 1225, in _connect
    await self._poll(self._waiter, self._timeout)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 881, in _poll
    await asyncio.wait_for(self._waiter, timeout)
  File "/usr/lib/python3.11/asyncio/tasks.py", line 489, in wait_for
    return fut.result()
           ^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 788, in _ready
    state = self._conn.poll()
            ^^^^^^^^^^^^^^^^^
psycopg2.OperationalError: Connection refused
	Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused
	Is the server running on that host and accepting TCP/IP connections?

ERROR:AsyncPostgresDB:ui:Exception occurred
Traceback (most recent call last):
  File "/opt/latest/lib/python3.11/site-packages/services/data/postgres_async_db.py", line 125, in _init
    self.pool = await aiopg.create_pool(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 300, in from_pool_fill
    await self._fill_free_pool(False)
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 336, in _fill_free_pool
    conn = await connect(
           ^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 1225, in _connect
    await self._poll(self._waiter, self._timeout)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 881, in _poll
    await asyncio.wait_for(self._waiter, timeout)
  File "/usr/lib/python3.11/asyncio/tasks.py", line 489, in wait_for
    return fut.result()
           ^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 788, in _ready
    state = self._conn.poll()
            ^^^^^^^^^^^^^^^^^
psycopg2.OperationalError: Connection refused
	Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused
	Is the server running on that host and accepting TCP/IP connections?

ERROR:AsyncPostgresDB:ui:Exception occurred
Traceback (most recent call last):
  File "/opt/latest/lib/python3.11/site-packages/services/data/postgres_async_db.py", line 125, in _init
    self.pool = await aiopg.create_pool(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 300, in from_pool_fill
    await self._fill_free_pool(False)
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 336, in _fill_free_pool
    conn = await connect(
           ^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 1225, in _connect
    await self._poll(self._waiter, self._timeout)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 881, in _poll
    await asyncio.wait_for(self._waiter, timeout)
  File "/usr/lib/python3.11/asyncio/tasks.py", line 489, in wait_for
    return fut.result()
           ^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 788, in _ready
    state = self._conn.poll()
            ^^^^^^^^^^^^^^^^^
psycopg2.OperationalError: Connection refused
	Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused
	Is the server running on that host and accepting TCP/IP connections?

Traceback (most recent call last):
  File "/opt/latest/bin/ui_backend_service", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/services/ui_backend_service/ui_server.py", line 185, in main
    the_app = app(loop, DBConfiguration())
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/services/ui_backend_service/ui_server.py", line 80, in app
    loop.run_until_complete(
  File "/usr/lib/python3.11/asyncio/base_events.py", line 654, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/services/data/postgres_async_db.py", line 177, in _init
    raise e
  File "/opt/latest/lib/python3.11/site-packages/services/data/postgres_async_db.py", line 125, in _init
    self.pool = await aiopg.create_pool(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 300, in from_pool_fill
    await self._fill_free_pool(False)
  File "/opt/latest/lib/python3.11/site-packages/aiopg/pool.py", line 336, in _fill_free_pool
    conn = await connect(
           ^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 1225, in _connect
    await self._poll(self._waiter, self._timeout)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 881, in _poll
    await asyncio.wait_for(self._waiter, timeout)
  File "/usr/lib/python3.11/asyncio/tasks.py", line 489, in wait_for
    return fut.result()
           ^^^^^^^^^^^^
  File "/opt/latest/lib/python3.11/site-packages/aiopg/connection.py", line 788, in _ready
    state = self._conn.poll()
            ^^^^^^^^^^^^^^^^^
psycopg2.OperationalError: Connection refused
	Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused
	Is the server running on that host and accepting TCP/IP connections?

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