[ansible-project] Ansible cannot find hosts defined in ~/.ssh/config

[Aleksey Kislov]

After recent update, when I try to run my playbook, I immediately get the skipping:
no hosts matched response. I can reproduce it with following command:

ansible myhost --list-hosts

The output of it is No hosts matched. myhost is defined in my local ssh
config. -c ssh has the same effect. When I downgrade to 1.7.2 it works fine
(ansible locates myhost). /etc/ansible/ansible.cfg has defaults in
[ssh_connection] section.

My system is Ubuntu 15.04. Ssh version is OpenSSH_6.7p1 Ubuntu-5ubuntu1,
OpenSSL 1.0.1f 6 Jan 2014. Current Ansible version is 1.9.2.

[Paul Markham]

I don't think Ansible is going to look in you .ssh/config for hosts.
Instead it'll look in its inventory, which is probably under /etc/ansible
by default. Perhaps upgrading Ansible re-wrote the inventory file and lost
you configuration.