yum安装ansible报错解决方案
文章参考：https://mirrors.tuna.tsinghua.edu.cn/help/epel/
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
3、使用EPEL源
yum install epel-release
当前tuna已经在epel的官方镜像列表里，所以不需要其他配置，mirrorlist机制就能让你的服务器就近使用tuna的镜像。如果你想强制 你的服务器使用tuna的镜像，可以修改/etc/yum.repos.d/epel.repo，将mirrorlist和metalink开头的行注释掉。
接下来，取消注释这个文件里baseurl开头的行，并将其中的http://download.fedoraproject.org/pub替换成https://mirrors.tuna.tsinghua.edu.cn。
可以用如下命令自动替换：（来自 https://github.com/tuna/issues/issues/687）
sed -e 's!^metalink=!#metalink=!g' \
-e 's!^#baseurl=!baseurl=!g' \
-e 's!//download\.fedoraproject\.org/pub!//mirrors.tuna.tsinghua.edu.cn!g' \
-e 's!http://mirrors\.tuna!https://mirrors.tuna!g' \
-i /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel-testing.repo
4、安装ansible
yum install -y ansible
.....
Dependency Installed:
PyYAML.x86_64 0:3.10-11.el7
libyaml.x86_64 0:0.1.4-11.el7_0
python-babel.noarch 0:0.9.6-8.el7
python-backports.x86_64 0:1.0-8.el7
python-backports-ssl_match_hostname.noarch 0:3.5.0.1-1.el7
python-cffi.x86_64 0:1.6.0-5.el7
python-enum34.noarch 0:1.0.4-1.el7
python-idna.noarch 0:2.4-1.el7
python-ipaddress.noarch 0:1.0.16-2.el7
python-jinja2.noarch 0:2.7.2-4.el7
python-markupsafe.x86_64 0:0.11-10.el7
python-paramiko.noarch 0:2.1.1-9.el7
python-ply.noarch 0:3.4-11.el7
python-pycparser.noarch 0:2.14-1.el7
python-setuptools.noarch 0:0.9.8-7.el7
python-six.noarch 0:1.9.0-2.el7
python2-cryptography.x86_64 0:1.7.2-2.el7
python2-httplib2.noarch 0:0.18.1-3.el7
python2-jmespath.noarch 0:0.9.4-2.el7
python2-pyasn1.noarch 0:0.1.9-7.el7
sshpass.x86_64 0:1.06-2.el7
Complete!
5、测试
[root@localhost ~]# ansible --version
ansible 2.9.21
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.5 (default, Nov 16 2020, 22:23:17) [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)]