There are known bug with relative symlinks ln --relative, which may fail rollback command.
Add next line to deploy.php file:
set('use_relative_symlink', false);ControlPersist causes stderr to be left open until the master connection times out.
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=714526
- https://bugzilla.mindrot.org/show_bug.cgi?id=1988
Certificate verification fails with multiple https urls.