Comment 6 for bug 1528579

We still observe this issue.
Sometimes it's just a bunch of errors, but sometimes it fails with segfault which leads to test failure.
Note: more SSH connections used in the test -> more probability to reproduce the issue.
Thus, more nodes in the environment - more chance to hit this bug as well.

This bug is related to known issues:
paramiko: https://github.com/paramiko/paramiko/issues/17
python: http://bugs.python.org/issue1856

We believe it's possible to avoid this bug if we will close SSH connections opened by fuel-qa.
There is method clean_all_connections(), but it is called in resume_environment() only.
Maybe calling this method on tests tear-down/exit will fix the issue.