SSH ok but Ansible returns "unreachable"

Question

My SSH using keys is set up properly.

ssh [email protected]
admin@DiskStation:~$

But Ansible returns an error:

TASK [setup] *******************************************************************
<192.168.1.111> ESTABLISH SSH CONNECTION FOR USER: admin
<192.168.1.111> SSH: EXEC ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=admin -o ConnectTimeout=10 -o ControlPath=/Users/Shared/Jenkins/.ansible/cp/ansible-ssh-%h-%p-%r 192.168.1.111 '/bin/sh -c '"'"'( umask 22 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1479205446.3-33100049148171 `" && echo "` echo $HOME/.ansible/tmp/ansible-tmp-1479205446.3-33100049148171 `" )'"'"''
<192.168.1.111> PUT /var/folders/pd/8q63k3z93nx_78dggb9ltm4c00007x/T/tmpNJvc43 TO /var/services/homes/admin/.ansible/tmp/ansible-tmp-1479205446.3-33100049148171/setup
<192.168.1.111> SSH: EXEC sftp -b - -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=admin -o ConnectTimeout=10 -o ControlPath=/Users/Shared/Jenkins/.ansible/cp/ansible-ssh-%h-%p-%r '[192.168.1.111]'
fatal: [192.168.1.111]: UNREACHABLE! => {"changed": false, "msg": "SSH Error: data could not be sent to the remote host. Make sure this host can be reached over ssh", "unreachable": true}

Can someone help me?

Answer 1

Ansible returns "unreachable" for the SFTP connection, not SSH.

Either enable SFTP on the target node (or a firewall in-between), or configure Ansible to use SCP in ansible.cfg:

scp_if_ssh = True