The most important part of the log comes from the rancher-agent:

time="2022-08-19T07:03:38Z" level=info msg="Connecting to <wss://rancher.gandalf.mordor.net/v3/connect> with token starting with 4sfxz9dk54w2hp9xv729k8tbgnf"
time="2022-08-19T07:03:38Z" level=info msg="Connecting to proxy" url="<wss://rancher.gandalf.mordor.net/v3/connect>"
time="2022-08-19T07:03:48Z" level=error msg="Failed to connect to proxy. Empty dialer response" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:03:48Z" level=error msg="Remotedialer proxy error" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:03:50Z" level=warning msg="Error while getting agent config: Get \"<https://rancher.gandalf.mordor.net/v3/connect/config>\": dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:03:58Z" level=info msg="Connecting to <wss://rancher.gandalf.mordor.net/v3/connect> with token starting with 4sfxz9dk54w2hp9xv729k8tbgnf"
time="2022-08-19T07:03:58Z" level=info msg="Connecting to proxy" url="<wss://rancher.gandalf.mordor.net/v3/connect>"
time="2022-08-19T07:04:08Z" level=error msg="Failed to connect to proxy. Empty dialer response" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:08Z" level=error msg="Remotedialer proxy error" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:18Z" level=info msg="Connecting to <wss://rancher.gandalf.mordor.net/v3/connect> with token starting with 4sfxz9dk54w2hp9xv729k8tbgnf"
time="2022-08-19T07:04:18Z" level=info msg="Connecting to proxy" url="<wss://rancher.gandalf.mordor.net/v3/connect>"
time="2022-08-19T07:04:25Z" level=warning msg="Error while getting agent config: Get \"<https://rancher.gandalf.mordor.net/v3/connect/config>\": dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:28Z" level=error msg="Failed to connect to proxy. Empty dialer response" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:28Z" level=error msg="Remotedialer proxy error" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:38Z" level=info msg="Connecting to <wss://rancher.gandalf.mordor.net/v3/connect> with token starting with 4sfxz9dk54w2hp9xv729k8tbgnf"
time="2022-08-19T07:04:38Z" level=info msg="Connecting to proxy" url="<wss://rancher.gandalf.mordor.net/v3/connect>"
time="2022-08-19T07:04:48Z" level=error msg="Failed to connect to proxy. Empty dialer response" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:48Z" level=error msg="Remotedialer proxy error" error="dial tcp 20.42.142.242:443: i/o timeout"
time="2022-08-19T07:04:58Z" level=info msg="Connecting to <wss://rancher.gandalf.mordor.net/v3/connect> with token starting with 4sfxz9dk54w2hp9xv729k8tbgnf"
time="2022-08-19T07:04:58Z" level=info msg="Connecting to proxy" url="<wss://rancher.gandalf.mordor.net/v3/connect>"
time="2022-08-19T07:05:00Z" level=warning msg="Error while getting agent config: Get \"<https://rancher.gandalf.mordor.net/v3/connect/config>\": dial tcp 20.42.142.242:443: i/o timeout"