前言：安装ansible出现如下错误：
Error: Package: python-paramiko-2.1.1-0.10.el7.noarch (epel)
Requires: python-cryptography
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-six
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: PyYAML
Error: Package: python-paramiko-2.1.1-0.10.el7.noarch (epel)
Requires: python2-pyasn1
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python2-cryptography
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-jinja2
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-setuptools
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
[](()一、报错信息：
[root@ansible ~]# yum install -y ansible
Loaded plugins: fastestmirror
Repository epel is listed more than once in the configuration
Repository epel-debuginfo is listed more than once in the configuration
Repository epel-source is listed more than once in the configuration
Loading mirror speeds from cached hostfile
- epel: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
–> Running transaction check
—> Package ansible.noarch 0:2.9.21-1.el7 will be installed
–> Processing Dependency: PyYAML for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-httplib2 for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-jinja2 for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-paramiko for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-setuptools for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-six for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python2-cryptography for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python2-jmespath for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: sshpass for package: ansible-2.9.21-1.el7.noarch
–> Running transaction check
—> Package ansible.noarch 0:2.9.21-1.el7 will be installed
–> Processing Dependency: PyYAML for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-jinja2 for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-setuptools for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python-six for package: ansible-2.9.21-1.el7.noarch
–> Processing Dependency: python2-cryptography for package: ansible-2.9.21-1.el7.noarch
—> Package python-paramiko.noarch 0:2.1.1-0.10.el7 will be installed
–> Processing Dependency: python-cryptography for package: python-paramiko-2.1.1-0.10.el7.noarch
–> Processing Dependency: python2-pyasn1 for package: python-paramiko-2.1.1-0.10.el7.noarch
—> Package python2-httplib2.noarch 0:0.18.1-3.el7 will be installed
—> Package python2-jmespath.noarch 0:0.9.4-2.el7 will be installed
—> Package sshpass.x86_64 0:1.06-1.el7 will be installed
–> Finished Dependency Resolution
Error: Package: python-paramiko-2.1.1-0.10.el7.noarch (epel)
Requires: python-cryptography
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-six
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: PyYAML
Error: Package: python-paramiko-2.1.1-0.10.el7.noarch (epel)
Requires: python2-pyasn1
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python2-cryptography
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-jinja2
Error: Package: ansible-2.9.21-1.el7.noarch (epel)
Requires: python-setuptools
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
[](()二、如何解决
[](()1、重装虚拟机
重装一台虚拟机,保证虚拟机可以上网，可以选择桥接模式网卡
[](()2、修改yum源建议先备份 /etc/yum.repos.d/ 内的文件（CentOS 7 及之前为 CentOS-Base.repo，CentOS 8 为CentOS-Linux-*.repo）
然后编辑 /etc/yum.repos.d/ 中的相应文件，在 mirrorlist= 开头行前面加 # 注释掉；并将 baseurl= 开头行取消注释（如果被注释的话），把该行内的域名（例如mirror.centos.org）替换为 mirrors.tuna.tsinghua.edu.cn。
以上步骤可以被下方的命令一步完成
sudo sed -e ‘s|^mirrorlist=|#mirrorlist=|g’
-e ‘s|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g’
-i.bak
/etc/yum.repos.d/CentOS-*.repo
注意其中的*通配符，如果只需要替换一些文件中的源，请自行增删。
注意，如果需要启用其中一些 repo，需要将其中的 enabled=0 改为 enabled=1。
最后，更新软件包缓存
sudo yum makecache
