> For the complete documentation index, see [llms.txt](https://platform9.com/kb/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://platform9.com/kb/generic/solution/host-unable-to-communicate-with-management-plane-etimedout.md). # Host Unable to Communicate With Management Plane: "ETIMEDOUT" ## Problem * A Platform9 managed host shows as **offline** in Clarity UI. * On the host, the following traceback and subsequent error are observed in */var/log/pf9/hostagent.log.* {% tabs %} {% tab title="None" %} ```none session.py WARNING - Not sending status message because channel is closed session.py INFO - Using the default virtual host '/' on the AMQP broker localhost slave.py ERROR - Connection error. Retrying in 10 seconds. Traceback (most recent call last): File "/opt/pf9/hostagent/lib/python2.7/site-packages/bbslave/slave.py", line 83, in reconnect_loop channel_retry_period=retry_period) File "/opt/pf9/hostagent/lib/python2.7/site-packages/bbslave/session.py", line 712, in start socket_timeout=socket_timeout) # in secs File "/opt/pf9/hostagent/lib/python2.7/site-packages/bbcommon/amqp.py", line 238, in dual_channel_io_loop conn.ioloop.start() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/select_connection.py", line 354, in start self.poll() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/select_connection.py", line 602, in poll self._process_fd_events(fd_event_map, write_only) File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/select_connection.py", line 443, in _process_fd_events handler(fileno, events, write_only=write_only) File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adaptersbase_connection.py", line 364, in _handle_events self._handle_read() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/base_connection.py", line 412, in _handle_read return self._handle_disconnect() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/base_connection.py", line 288, in _handle_disconnect self._adapter_disconnect() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/select_connection.py", line 95, in _adapter_disconnect super(SelectConnection, self)._adapter_disconnect() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/base_connection.py", line 154, in _adapter_disconnect self._check_state_on_disconnect() File "/opt/pf9/hostagent/lib/python2.7/site-packages/pika/adapters/base_connection.py", line 169, in _check_state_on_disconnect raise exceptions.IncompatibleProtocolError IncompatibleProtocolError ``` {% endtab %} {% endtabs %} * Additionally, in */var/log/pf9/comms.log*, an 'ETIMEDOUT' error is observed for the IPv4 address of the Management Plane. {% tabs %} {% tab title="None" %} ```none [ERROR] sni-broker-openstack-v1-5673-3 - Server socket for client 32003 error: { [Error: connect ETIMEDOUT:443] code: 'ETIMEDOUT', errno: 'ETIMEDOUT', syscall: 'connect', address: '', port: 443 } Error: connect ETIMEDOUT:443 at Object.exports._errnoException (util.js:907:11) at exports._exceptionWithHostPort (util.js:930:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1081:14) [DEBUG] sni-broker-openstack-v1-5673-3 - Server socket for client 32003 closed with error ... remaining: 17 [WARN] sni-broker-v1-5672-2 - Forcefully destroying server socket for client 32025 [DEBUG] sni-broker-v1-5672-2 - Server socket for client 32025 closed normally ... remaining: 3 [WARN] sni-broker-openstack-v1-5673-3 - Forcefully destroying client 32003 [DEBUG] sni-broker-openstack-v1-5673-3 - Client 32003 socket closed normally ... remaining: 17 [ERROR] sni-broker-openstack-v1-5673-3 - Server socket for client 32005 error: { [Error: connect ETIMEDOUT:443] code: 'ETIMEDOUT', errno: 'ETIMEDOUT', syscall: 'connect', address: '', port: 443 } ``` {% endtab %} {% endtabs %} ## Environment * Platform9 Managed OpenStack - All Versions * Platform9 Managed Kubernetes - All Versions ## Cause Bi-directional communication is required on port 443 between the host and Platform9 Management Plane in order to orchestrate operations necessary to provision cloud resources. ## Resolution 1. Disable any firewalls temporarily. 2. Otherwise, ensure bi-directional traffic between the host and Management Plane is allowed on port 443. ## Additional Information [Platform9 Managed OpenStack Prerequisites for Linux KVM](https://docs.platform9.com/openstack/getting_started/prerequisites_linux_kvm#Networking) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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