[[email protected] ~]# ansible all -m ping -u root
ERROR! Unexpected Exception, this is probably a bug: (cryptography 0.8.2 (/usr/lib64/python2.7/site-packages), Requirement.parse('cryptography>=1.1'))
the full traceback was:


Traceback (most recent call last):
  File "/usr/bin/ansible", line 97, in <module>
    mycli = getattr(__import__("ansible.cli.%s" % sub, fromlist=[myclass]), myclass)
  File "/usr/lib/python2.7/site-packages/ansible/cli/__init__.py", line 38, in <module>
    from ansible.inventory.manager import InventoryManager
  File "/usr/lib/python2.7/site-packages/ansible/inventory/manager.py", line 33, in <module>
    from ansible.plugins.loader import inventory_loader
  File "/usr/lib/python2.7/site-packages/ansible/plugins/loader.py", line 22, in <module>
    from ansible.parsing.utils.yaml import from_yaml
  File "/usr/lib/python2.7/site-packages/ansible/parsing/utils/yaml.py", line 18, in <module>
    from ansible.parsing.yaml.loader import AnsibleLoader
  File "/usr/lib/python2.7/site-packages/ansible/parsing/yaml/loader.py", line 30, in <module>
    from ansible.parsing.yaml.constructor import AnsibleConstructor
  File "/usr/lib/python2.7/site-packages/ansible/parsing/yaml/constructor.py", line 29, in <module>
    from ansible.parsing.vault import VaultLib
  File "/usr/lib/python2.7/site-packages/ansible/parsing/vault/__init__.py", line 45, in <module>
    from cryptography.hazmat.backends import default_backend
  File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 7, in <module>
    import pkg_resources
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 3011, in <module>
    parse_requirements(__requires__), Environment()
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 630, in resolve
    raise VersionConflict(dist,req) # XXX put more info here

VersionConflict: (cryptography 0.8.2 (/usr/lib64/python2.7/site-packages), Requirement.parse('cryptography>=1.1'))

2.解決方案

 rpm -qa |grep python-crypto    把列出的rpm包全部刪除

rpm -e python-cryptography-0.8.2-1.el7.x86_64 --nodeps    強制刪除