ceph orch host add host issues (env: centos8, ceph:12.2.5) - ceph

Question

information:
hostnames:
cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.49.41 ceph-gw-one
172.16.49.42 ceph-gw-two
shell: ceph orch host add 172.16.49.42
Error EINVAL: New host 172.16.49.42 (172.16.49.42) failed check: ['INFO:cephadm:podman|docker (/bin/docker) is present', 'INFO:cephadm:systemctl is present', 'INFO:cephadm:lvcreate is present', 'INFO:cephadm:Unit chronyd.service is enabled and running', 'INFO:cephadm:Hostname "172.16.49.42" matches what is expected.', 'ERROR: hostname "ceph-gw-two" does not match expected hostname "172.16.49.42"']
shell: orch host add ceph-gw-two
Error EINVAL: Failed to connect to ceph-gw-two (ceph-gw-two).
Check that the host is reachable and accepts connections using the cephadm SSH key
you may want to run:
ceph cephadm get-ssh-config > ssh_config
ceph config-key get mgr/cephadm/ssh_identity_key > key
ssh -F ssh_config -i key root#ceph-gw-two
i have checked that wether by ip or hostname, ssh login success;

Answer 1

i read the adm source scripts：
out, err, code = self._run_cephadm(spec.hostname, cephadmNoImage, 'check-host',
['--expect-hostname', spec.hostname],
addr=spec.addr,
error_ok=True, no_fsid=True)
if code:
raise OrchestratorError('New host %s (%s) failed check: %s' % (
spec.hostname, spec.addr, err))
so ,i change the cmd to:
ceph orch host add ceph-gw-two 172.16.49.42;
done, it works well;