I still haven't been able to resurrect the 1st host, so I've spent some time trying to get the hosted engine stable. I would welcome input on how to fix the problematic host so that it can be accessible again.
As per my original email, this all started when I tried to change the
management vlan. I honestly cannot remember what I did (if anything) to the
actual hosts when this all started, but my troubleshooting steps today have
been to try to fiddle with the vlan settings and
/etc/sysconfig/network-scripts/ files on the problematic host to switch from
the original vlan (1) to the new vlan (10).
Until then, I'm troubleshooting why the hosted engine isn't really working,
since the other two hosts are operational.
The hosted engine is "running" -- I can access and navigate around the oVirt
Manager.
However, it appears that all of the storage domains are down, and all of the
hosts are "NonOperational". I was, however, able to put two of the hosts into
Maintenance Mode, including the problematic 1st host.
This is what I see on the 2nd host:
[root@cha2-storage network-scripts]# gluster peer statusNumber of Peers: 2
Hostname: cha1-storage.mgt.example.com
Uuid: 348de1f3-5efe-4e0c-b58e-9cf48071e8e1
State: Peer in Cluster (Disconnected)
Hostname: cha3-storage.mgt.example.com
Uuid: 0563c3e8-237d-4409-a09a-ec51719b0da6
State: Peer in Cluster (Connected)
[root@cha2-storage network-scripts]# hosted-engine --vm-status
The hosted engine configuration has not been retrieved from shared storage.
Please ensure that ovirt-ha-agent is running and the storage server is
reachable.
[root@cha2-storage network-scripts]# hosted-engine --connect-storageTraceback
(most recent call last):
File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File
"/usr/lib/python3.6/site-packages/ovirt_hosted_engine_setup/connect_storage_server.py",
line 30, in <module>
timeout=ohostedcons.Const.STORAGE_SERVER_TIMEOUT,
File
"/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/client/client.py",
line 312, in connect_storage_server
sserver.connect_storage_server(timeout=timeout)
File
"/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/lib/storage_server.py",
line 394, in connect_storage_server
'Connection to storage server failed'
RuntimeError: Connection to storage server failed
The ovirt-engine-ha service seems to be continuously trying to load / activate,
but failing:
[root@cha2-storage network-scripts]# systemctl status -l ovirt-ha-agent●
ovirt-ha-agent.service - oVirt Hosted Engine High Availability Monitoring Agent
Loaded: loaded (/usr/lib/systemd/system/ovirt-ha-agent.service; enabled;
vendor preset: disabled)
Active: activating (auto-restart) (Result: exit-code) since Wed 2021-04-07
20:24:46 EDT; 60ms ago
Process: 124306 ExecStart=/usr/share/ovirt-hosted-engine-ha/ovirt-ha-agent
(code=exited, status=157)
Main PID: 124306 (code=exited, status=157)
Some recent entries in
/var/log/ovirt-hosted-engine-ha/agent.logMainThread::ERROR::2021-04-07
20:22:59,115::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent)
Trying to restart agent
MainThread::INFO::2021-04-07
20:22:59,115::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent
shutting down
MainThread::INFO::2021-04-07
20:23:09,717::agent::67::ovirt_hosted_engine_ha.agent.agent.Agent::(run)
ovirt-hosted-engine-ha agent 2.4.6 started
MainThread::INFO::2021-04-07
20:23:09,742::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::2021-04-07
20:23:09,837::hosted_engine::548::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker)
Initializing ha-broker connection
MainThread::INFO::2021-04-07
20:23:09,838::brokerlink::82::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor)
Starting monitor network, options {'addr': '10.1.0.1', 'network_test': 'dns',
'tcp_t_address': '', 'tcp_t_port': ''}
MainThread::ERROR::2021-04-07
20:23:09,839::hosted_engine::564::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker)
Failed to start necessary monitors
MainThread::ERROR::2021-04-07
20:23:09,842::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': '10.1.0.1', 'network_test': 'dns',
'tcp_t_address': '', 'tcp_t_port': ''}]
MainThread::ERROR::2021-04-07
20:23:09,842::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent)
Trying to restart agent
MainThread::INFO::2021-04-07
20:23:09,842::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent
shutting down
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, April 7, 2021 5:36 PM, David White via Users <users@ovirt.org>
wrote:
> I'm working on setting up my environment prior to production, and have run
> into an issue.
>
> I got most things configured, but due to a limitation on one of my switches,
> I decided to change the management vlan that the hosts communicate on. Over
> the course of changing that vlan, I wound up resetting my router to default
> settings.
>
> I have the router operational again, and I also have 1 of my switches
> operational.
> Now, I'm trying to bring the oVirt cluster back online.
> This is oVirt 4.5 running on RHEL 8.3.
>
> The old vlan is 1, and the new vlan is 10.
>
> Currently, hosts 2 & 3 are accessible over the new vlan, and can ping each
> other.
> I'm able to ssh to both hosts, and when I run "gluster peer status", I see
> that they are connected to each other.
>
> However, host 1 is not accessible from anything. I can't ping it, and it
> cannot get out.
>
> As part of my troubleshooting, I've done the following:
> From the host console, I ran `nmcli connection delete` to delete the old vlan
> (VLAN 1).
> I moved the /etc/sysconfig/network-scripts/interface.1 file to interface.10,
> and edited the file accordingly to make sure the vlan and device settings are
> set to 10 instead of 1, and I rebooted the host.
>
> The engine seems to be running, but I don't understand why.
> From each of the hosts that are working (host 2 and host 3), I ran
> "hosted-engine --check-liveliness" and both hosts indicate that the engine is
> NOT running.
>
> Yet the engine loads in a web browser, and I'm able to log into
> /ovirt-engine/webadmin/.
> The engine thinks that all 3 hosts is nonresponsive. See screenshot below:
>
> [Screenshot from 2021-04-07 17-33-48.png]
>
> What I'm really looking for help with is to get the first host back online.
> Once it is healthy and gluster is healthy, I feel confident I can get the
> engine operational again.
>
> What else should I look for on this host?
>
> Sent with ProtonMail Secure Email.
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