docker-compose启动报错，解决方案

[root@cache1 www]# docker-compose
Traceback (most recent call last):
File "/usr/bin/docker-compose", line 5, in <module>
from pkg_resources import load_entry_point
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 626, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: backports.ssl-match-hostname>=3.5

pip install --upgrade pip # 先升级下pip

pip install docker-compose

# 执行如下命令

docker-compose --help

# 报如下错误：

Traceback (most recent call last):

File "/usr/bin/docker-compose", line 5, in <module>

from pkg_resources import load_entry_point

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 626, in resolve

raise DistributionNotFound(req)

pkg_resources.DistributionNotFound: backports.ssl-match-hostname>=3.5

# 解决方法：

pip install --upgrade backports.ssl_match_hostname