[ovirt-users] Re: Cannot start hosted-engine

Hi list, I have a hosted engine running on a CentOS 8. The engine and all the VM's are stored on a 4-node gluster. I had some issues with the gluster and then the hosted-engine stopped working (even though the virtualization dashboard showed 4 virtual machines running). I tried to "systemctl restart" the hosted-engine, but it failed. I try to reboot the server and the hosted-engine still will not come up. Note that the server has no issue mounting the gluster: $ df hydra1:/MRIData 390664407040 20530130012 370134277028 6% /rhev/data-center/mnt/glusterSD/hydra1:_MRIData $ ls -l /rhev/data-center/mnt/glusterSD/hydra1\:_MRIData/6547dc22-b89e-4f14-8958-c9e8d27b29a4/ drwxr-xr-x. 2 vdsm kvm 4.0K Mar 29 12:24 dom_md drwxr-xr-x. 2 vdsm kvm 4.0K Jul 20 17:47 ha_agent drwxr-xr-x. 12 vdsm kvm 4.0K Apr 1 16:32 images drwxr-xr-x. 4 vdsm kvm 4.0K Mar 29 12:24 master Where "hydra1" is one of my gluster nodes and MRIData is the volume name. Here is the relevant snippet from /var/log/ovirt-hosted-engine-ha/agent.log MainThread::INFO::2021-07-20 17:29:07,584::agent::67::ovirt_hosted_engine_ha.agent.agent.Agent::(run) ovirt-hosted-engine-ha agent 2.4.6 started MainThread::INFO::2021-07-20 17:29:07,594::hosted_engine::242::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Certificate common name not found, using hostname to identify host MainThread::INFO::2021-07-20 17:29:07,635::hosted_engine::548::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Initializing ha-broker connection MainThread::INFO::2021-07-20 17:29:07,636::brokerlink::82::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor) Starting monitor network, options {'addr': '192.168.39.65', 'network_test': 'dns', 'tcp_t_address': '', 'tcp_t_port': ''} MainThread::ERROR::2021-07-20 17:29:07,636::hosted_engine::564::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Failed to start necessary monitors MainThread::ERROR::2021-07-20 17:29:07,637::agent::143::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last): File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 85, in start_monitor response = self._proxy.start_monitor(type, options) File "/usr/lib64/python3.6/xmlrpc/client.py", line 1112, in __call__ return self.__send(self.__name, args) File "/usr/lib64/python3.6/xmlrpc/client.py", line 1452, in __request verbose=self.__verbose File "/usr/lib64/python3.6/xmlrpc/client.py", line 1154, in request return self.single_request(host, handler, request_body, verbose) File "/usr/lib64/python3.6/xmlrpc/client.py", line 1166, in single_request http_conn = self.send_request(host, handler, request_body, verbose) File "/usr/lib64/python3.6/xmlrpc/client.py", line 1279, in send_request self.send_content(connection, request_body) File "/usr/lib64/python3.6/xmlrpc/client.py", line 1309, in send_content connection.endheaders(request_body) File "/usr/lib64/python3.6/http/client.py", line 1249, in endheaders self._send_output(message_body, encode_chunked=encode_chunked) File "/usr/lib64/python3.6/http/client.py", line 1036, in _send_output self.send(msg) File "/usr/lib64/python3.6/http/client.py", line 974, in send self.connect() File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/lib/unixrpc.py", line 74, in connect self.sock.connect(base64.b16decode(self.host)) FileNotFoundError: [Errno 2] No such file or directory

During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent return action(he) File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper return he.start_monitoring() File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 437, in start_monitoring self._initialize_broker() File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 561, in _initialize_broker m.get('options', {})) File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 91, in start_monitor ).format(t=type, o=options, e=e) ovirt_hosted_engine_ha.lib.exceptions.RequestError: brokerlink - failed to start monitor via ovirt-ha-broker: [Errno 2] No such file or directory, [monitor: 'network', options: {'addr': '192.168.39.65', 'network_test': 'dns', 'tcp_t_address': '', 'tcp_t_port': ''}] MainThread::ERROR::2021-07-20 17:29:07,637::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent MainThread::INFO::2021-07-20 17:29:07,637::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent shutting down I'm puzzled by that "Certificate common name not found", which I had not seen before.

The fqdn of the hosted engine resolves fine on the server, so does the fqdn of the server itself. The ip address it seems to try to use for the network is that of one of the university's gateways. Any ideas ? Any way to debug this further ?