yum install failed

[Fanjun Kong]

I have installed CentOS 7.4 and tried yum install but I got below errors (I
searched web for many times, it doesn't help to solve the issue)

yum -y install shibboleth.x86_64
Dependencies Resolved

================================================================================
 Package                Arch      Version          Repository
Size
================================================================================
Installing:
 shibboleth             x86_64    2.6.1-3.1        security_shibboleth
1.2 M
Installing for dependencies:
 libcurl-openssl        x86_64    7.57.0-1.1       security_shibboleth
231 k
 liblog4shib1           x86_64    1.0.9-3.2        security_shibboleth
 68 k
 libmemcached           x86_64    1.0.16-5.el7     base
 237 k
 libsaml9               x86_64    2.6.1-3.1        security_shibboleth
957 k
 libxml-security-c17    x86_64    1.7.3-3.2        security_shibboleth
285 k
 libxmltooling7         x86_64    1.6.4-3.1        security_shibboleth
704 k
 opensaml-schemas       x86_64    2.6.1-3.1        security_shibboleth
 29 k
 unixODBC               x86_64    2.3.1-11.el7     base
 413 k
 xerces-c               x86_64    3.1.1-8.el7_2    base
 878 k
 xmltooling-schemas     x86_64    1.6.4-3.1        security_shibboleth
 12 k

Transaction Summary
================================================================================
Install  1 Package (+10 Dependent packages)

Total size: 4.9 M
Total download size: 4.7 M
Installed size: 28 M
Downloading packages:
No Presto metadata available for security_shibboleth
liblog4shib1-1.0.9-3.2.x86_64. FAILED

http://download.opensuse.org/repositories/security%3A/shibboleth/CentOS_7/x86_64/liblog4shib1-1.0.9-3.2.x86_64.rpm:
[Errno 12] Timeout on
http://provo-mirror.opensuse.org/repositories/security:/shibboleth/CentOS_7/x86_64/liblog4shib1-1.0.9-3.2.x86_64.rpm:
(28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30
seconds')
Trying other mirror.
libcurl-openssl-7.57.0-1.1.x86 FAILED

http://download.opensuse.org/repositories/security%3A/shibboleth/CentOS_7/x86_64/libcurl-openssl-7.57.0-1.1.x86_64.rpm:
[Errno 12] Timeout on
http://provo-mirror.opensuse.org/repositories/security:/shibboleth/CentOS_7/x86_64/libcurl-openssl-7.57.0-1.1.x86_64.rpm:
(28, 'Operation t
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