/usr/lib/python3.6/site-packages/paramiko/client.py:779: UserWarning: Unknown ssh-ed25519 host key for 192.168.122.56: b'1d8452075cb748aac701ca5e22a01683'
  key.get_name(), hostname, hexlify(key.get_fingerprint()),
2018-08-25 20:08:34,623 main.py 128 INFO   doctor test starting.......
2018-08-25 20:08:34,623 apex.py 36 INFO   Setup Apex installer start......
2018-08-25 20:08:34,623 base.py 91 INFO   Get SSH keys from apex installer......
2018-08-25 20:08:34,926 apex.py 53 INFO   Get controller and compute ips from Apex installer......
2018-08-25 20:08:34,927 base.py 109 INFO   Run command=source stackrc; nova list | grep ' overcloud-' in apex installer......
2018-08-25 20:08:38,261 base.py 118 INFO   Output=['| bf1ceb3d-b357-4132-bc9b-8739c0fc395c | overcloud-controller-0  | ACTIVE | -          | Running     | ctlplane=192.30.9.9 |', '| 48b090f1-5261-4893-9abb-b49b3153fe16 | overcloud-novacompute-0 | ACTIVE | -          | Running     | ctlplane=192.30.9.5 |', '| f329b7c3-53cd-4b3c-82fd-1e00d2dcdf18 | overcloud-novacompute-1 | ACTIVE | -          | Running     | ctlplane=192.30.9.7 |'] command=source stackrc; nova list | grep ' overcloud-' in apex installer
2018-08-25 20:08:38,261 apex.py 64 INFO   controller_ips:['192.30.9.9']
2018-08-25 20:08:38,261 apex.py 65 INFO   compute_ips:['192.30.9.5', '192.30.9.7']
2018-08-25 20:08:39,219 apex.py 93 INFO   Set apply patches start......
/usr/lib/python3.6/site-packages/paramiko/client.py:779: UserWarning: Unknown ssh-ed25519 host key for 192.30.9.9: b'3946ed92c922cf316f973b26efa29542'
  key.get_name(), hostname, hexlify(key.get_fingerprint()),
2018-08-25 20:08:40,574 main.py 145 ERROR  doctor test failed, Exception=Unable to run 
command: sudo python set_config.py
ret: 1
2018-08-25 20:08:40,574 apex.py 124 INFO   restore apply patches start......
Traceback (most recent call last):
  File "/src/doctor-tests/doctor_tests/main.py", line 131, in run
    self.setup()
  File "/src/doctor-tests/doctor_tests/main.py", line 45, in setup
    self.installer.setup()
  File "/src/doctor-tests/doctor_tests/installer/apex.py", line 40, in setup
    self.set_apply_patches()
  File "/src/doctor-tests/doctor_tests/installer/apex.py", line 107, in set_apply_patches
    self.cm_set_script)
  File "/src/doctor-tests/doctor_tests/installer/base.py", line 128, in _run_apply_patches
    ret, output = client.ssh(cmd)
  File "/src/doctor-tests/doctor_tests/common/utils.py", line 84, in ssh
    % (command, ret))
Exception: Unable to run 
command: sudo python set_config.py
ret: 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/src/doctor-tests/doctor_tests/main.py", line 146, in run
    sys.exit(1)
SystemExit: 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/doctor-test", line 10, in <module>
    sys.exit(main())
  File "/src/doctor-tests/doctor_tests/main.py", line 170, in main
    doctor.run()
  File "/src/doctor-tests/doctor_tests/main.py", line 148, in run
    self.cleanup()
  File "/src/doctor-tests/doctor_tests/main.py", line 151, in cleanup
    self.installer.cleanup()
  File "/src/doctor-tests/doctor_tests/installer/apex.py", line 44, in cleanup
    self.restore_apply_patches()
  File "/src/doctor-tests/doctor_tests/installer/apex.py", line 135, in restore_apply_patches
    self.cm_restore_script)
  File "/src/doctor-tests/doctor_tests/installer/base.py", line 133, in _run_apply_patches
    client.ssh(restart_cmd)
  File "/src/doctor-tests/doctor_tests/common/utils.py", line 84, in ssh
    % (command, ret))
Exception: Unable to run 
command: sudo systemctl restart openstack-ceilometer-notification.service
ret: 5