ansible-playbook -i hosts install.yml failed

Hi all, I'm new for dcos on GCP,below are some errors I saw.

I followed the Readme step by step to create the dcos. some steps which need to be replaced and my setting are: 1.ssh-keygen -t rsa -f ~/.ssh/id_rsa -C dcos18 and prefix the dcos18.(Here I don't figure out what is my "username" ) 2.create a .ansible.cfg file in the root. 3.the IP in the file ./hosts I set 10.140.0.3(my zone asia-east1,and bootstarp IP:10.140.0.2) .

I would appreciate for your help.

TASK [remove masters from known_hosts file] ***

failed: [localhost] (item=master0) => {"changed": true, "cmd": ["/
usr/bin/ssh-keygen", "-R", "master0"], "delta": "0:00:00.008467", 
"end": "2018-12-26 19:57:33.291838", "item": "master0", "msg": "no
n-zero return code", "rc": 255, "start": "2018-12-26 19:57:33.2833
71", "stderr": "do_known_hosts: hostkeys_foreach failed: No such f
ile or directory", "stderr_lines": ["do_known_hosts: hostkeys_fore
ach failed: No such file or directory"], "stdout": "", "stdout_lin
es": []}
...ignoring

TASK [remove masters IP from known_hosts file] **

failed: [localhost] (item=master0) => {"changed": true, "cmd": ["/
usr/bin/ssh-keygen", "-R", "10.140.0.3"], "delta": "0:00:00.006626
", "end": "2018-12-26 19:57:33.553798", "item": "master0", "msg": 
"non-zero return code", "rc": 255, "start": "2018-12-26 19:57:33.5
47172", "stderr": "do_known_hosts: hostkeys_foreach failed: No suc
h file or directory", "stderr_lines": ["do_known_hosts: hostkeys_f
oreach failed: No such file or directory"], "stdout": "", "stdout_
lines": []}
...ignoring

TASK [wait for master instance creation to complete] *****

FAILED - RETRYING: wait for master instance creation to complete ( 300 retries left). failed: [localhost] (item={'_ansible_parsed': True, '_ansible_item _result': True, '_ansible_item_label': u'master0', u'ansible_job_i d': u'568314799743.4865', 'failed': False, u'started': 1, 'changed ': True, 'item': u'master0', u'finished': 0, u'results_file': u'/r oot/.ansible_async/568314799743.4865', '_ansible_ignore_errors': N one, '_ansible_no_log': False}) => {"ansible_job_id": "56831479974 3.4865", "attempts": 2, "changed": true, "cmd": ["/usr/bin/gcloud" , "compute", "--project", "dcos18", "instances", "create", "master 0", "--zone", "asia-east1-a", "--machine-type", "n1-standard-1", " --subnet", "default", "--private-network-ip", "10.140.0.3", "--mai ntenance-policy", "MIGRATE", "--tags", "master", "--scopes", "http s://www.googleapis.com/auth/cloud-platform", "--image", "centos-7- v20161027", "--image-project", "centos-cloud", "--boot-disk-size", "10", "--boot-disk-type", "pd-standard", "--boot-disk-device-name ", "master0-boot", "--metadata", "hostname=master0"], "delta": "0: 00:01.562617", "end": "2018-12-26 19:57:35.421858", "finished": 1, "item": {"ansible_job_id": "568314799743.4865", "changed": true, "failed": false, "finished": 0, "item": "master0", "results_file": "/root/.ansible_async/568314799743.4865", "started": 1}, "msg": " non-zero return code", "rc": 1, "start": "2018-12-26 19:57:33.8592 41", "stderr": "WARNING: You have selected a disk size of under [2 00GB]. This may result in poor I/O performance. For more informati on, see: https://developers.google.com/compute/docs/disks#performa nce.\nERROR: (gcloud.compute.instances.create) Could not fetch res ource:\n - The resource 'projects/dcos18/zones/asia-east1-a/instan ces/master0' already exists", "stderr_lines": ["WARNING: You have selected a disk size of under [200GB].This may result in poor I/O performance. For more information, see: https://developers.google .com/compute/docs/disks#performance.", "ERROR: (gcloud.compute.ins tances.create) Could not fetch resource:", " - The resource 'proje cts/dcos18/zones/asia-east1-a/instances/master0' already exists"], "stdout": "", "stdout_lines": []}

mesosphere-backup / dcos-gce

ansible-playbook -i hosts install.yml failed #29