Host stays in disconnected state with error "ERROR - Could not parse out socket information from /proc/cpuinfo, defaulting to 0"

2023-01-31 23:22:23,324 - amqp.py WARNING - Channel "send" closed due to EOF, retrying in 10 seconds

2023-01-31 23:22:23,324 - amqp.py WARNING - Connection closed due to EOF, retrying in 10 seconds

2023-01-31 23:22:23,325 - session.py ERROR - Connection closed unexpectedly.

2023-01-31 23:22:23,325 - slave.py ERROR - Connection error. Retrying in 10 seconds.

Traceback (most recent call last):

  File "/opt/pf9/hostagent/lib/python3.9/site-packages/bbslave/slave.py", line 127, in reconnect_loop

    start(config, log, app_db, agent_app_db, app_cache,

  File "/opt/pf9/hostagent/lib/python3.9/site-packages/bbslave/session.py", line 787, in start

    raise AMQPConnectionError

pika.exceptions.AMQPConnectionError

-------

2023-01-31 23:37:22,383 - package_cleaner.py INFO - Cleaning old packages from /var/cache/pf9apps

2023-01-31 23:37:22,386 - sysinfo.py ERROR - Could not parse out socket information from /proc/cpuinfo, defaulting to 0

Traceback (most recent call last):

  File "/opt/pf9/hostagent/lib/python3.9/site-packages/bbslave/sysinfo.py", line 83, in get_cpu_info

    cpu_sockets = int(subprocess.check_output('grep "physical id" /proc/cpuinfo | sort -u | wc -l', shell=True))

  File "/opt/pf9/python/lib/python3.9/subprocess.py", line 424, in check_output

    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,

  File "/opt/pf9/python/lib/python3.9/subprocess.py", line 505, in run

    with Popen(*popenargs, **kwargs) as process:

  File "/opt/pf9/python/lib/python3.9/subprocess.py", line 951, in __init__

    self._execute_child(args, executable, preexec_fn, close_fds,

  File "/opt/pf9/python/lib/python3.9/subprocess.py", line 1754, in _execute_child

    self.pid = _posixsubprocess.fork_exec(

BlockingIOError: [Errno 11] Resource temporarily unavailable

# systemctl restart pf9-hostagent