SSH problem

[sopaoglu]

Whern I try to run vagrant up command, it produce following error:

PYTHONUNBUFFERED=1 ANSIBLE_FORCE_COLOR=true ANSIBLE_HOST_KEY_CHECKING=false ANSIBLE_SSH_ARGS='-o UserKnownHostsFile=/dev/null -o IdentitiesOnly=yes -i '/home/ugur/Desktop/datalab-master/datalab/.vagrant/machines/mesos-batch3/virtualbox/private_key' -o ControlMaster=auto -o ControlPersist=60s' ansible-playbook --connection=ssh --timeout=30 --extra-vars=ansible_ssh_user='vagrant' --limit='all' --inventory-file=vagrant-inventory.ini --extra-vars={"user":"vagrant"} --sudo -vv datalab.yml
Using /home/ugur/Desktop/datalab-master/datalab/ansible.cfg as config file
1 plays in datalab.yml

PLAY [Launch datalab] **********************************************************

TASK [setup] *******************************************************************
fatal: [datalab-mesos-master1]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH Error: data could not be sent to the remote host. Make sure this host can be reached over ssh", "unreachable": true}
fatal: [datalab-mesos-master2]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH Error: data could not be sent to the remote host. Make sure this host can be reached over ssh", "unreachable": true}
fatal: [datalab-mesos-master3]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH Error: data could not be sent to the remote host. Make sure this host can be reached over ssh", "unreachable": true}

PLAY RECAP *********************************************************************
datalab-mesos-master1 : ok=0 changed=0 unreachable=1 failed=0
datalab-mesos-master2 : ok=0 changed=0 unreachable=1 failed=0
datalab-mesos-master3 : ok=0 changed=0 unreachable=1 failed=0

Ansible failed to complete successfully. Any error output should be
visible above. Please fix these errors and try again.