python 版本问题，导致ansible提示报错

[root@ansible-server ~]# ansible mongodb -m copy -a "src=/etc/yum.repos.d/mongodb-org-3.2.repo dest=/etc/yum.repos.d/"
SSH password:
10.8.21.9 | success >> {
"changed": false,
"checksum": "41b65edf420e087a9f8c66993338251f87008fba",
"dest": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"gid": 0,
"group": "root",
"mode": "0644",
"owner": "root",
"path": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"size": 143,
"state": "file",
"uid": 0
}

10.8.21.12 | success >> {
"changed": false,
"checksum": "41b65edf420e087a9f8c66993338251f87008fba",
"dest": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"gid": 0,
"group": "root",
"mode": "0644",
"owner": "root",
"path": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"size": 143,
"state": "file",
"uid": 0
}

10.8.21.8 | FAILED >> {
"checksum": "41b65edf420e087a9f8c66993338251f87008fba",
"failed": true,
"msg": "Error: ansible requires the stdlib json or simplejson module, neither was found!"
}

10.8.21.11 | success >> {
"changed": false,
"checksum": "41b65edf420e087a9f8c66993338251f87008fba",
"dest": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"gid": 0,
"group": "root",
"mode": "0644",
"owner": "root",
"path": "/etc/yum.repos.d/mongodb-org-3.2.repo",
"size": 143,
"state": "file",
"uid": 0
}

受控节点查看Python版本
[root@ansible-test1 ~]# python -V
Python 2.4.3

解决问题：
1，更新Python
2，节点上安装 python-simplejson