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Yum install error

[root@localhost cmake-3.2.2] # yum install gcc

Loaded plugins: fastestmirror, refresh-packagekit, security

Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was

14: PYCURL ERROR 6-"Couldn't resolve host 'mirrorlist.centos.org'"

Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

[root@localhost cmake-3.2.2] # yum install gcc-c++

Loaded plugins: fastestmirror, refresh-packagekit, security

Determining fastest mirrors

Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was

14: PYCURL ERROR 6-"Couldn't resolve host 'mirrorlist.centos.org'"

Error: Cannot find a valid baseurl for repo: base

The solution is as follows (modify dns configuration)

Vi / etc/resolv.conf

Add at the end of this document: nameserver 114.114.114.114

Install normally again:

[root@localhost cmake-3.2.2] # yum install gcc

Loaded plugins: fastestmirror, refresh-packagekit, security

Loading mirror speeds from cached hostfile

* base: mirrors.tuna.tsinghua.edu.cn

* extras: mirrors.btte.net

* updates: mirrors.tuna.tsinghua.edu.cn

Setting up Install Process

Resolving Dependencies

-> Running transaction check

-> Package gcc.x86_64 0RU 4.4.7-17.el6 will be installed

-- > Processing Dependency: libgomp = 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64

-- > Processing Dependency: cpp = 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64

-- > Processing Dependency: libgcc > = 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64

-- > Processing Dependency: cloog-ppl > = 0.15 for package: gcc-4.4.7-17.el6.x86_64

-> Running transaction check

-> Package cloog-ppl.x86_64 015. 7-1.2.el6 will be installed

-> Processing Dependency: libppl_c.so.2 () (64bit) for package: cloog-ppl-0.15.7-1.2.el6.x86_64

-> Processing Dependency: libppl.so.7 () (64bit) for package: cloog-ppl-0.15.7-1.2.el6.x86_64

-> Package cpp.x86_64 0RU 4.4.7-17.el6 will be installed

-> Processing Dependency: libmpfr.so.1 () (64bit) for package: cpp-4.4.7-17.el6.x86_64

-> Package libgcc.i686 0RU 4.4.7-4.el6 will be updated

-> Package libgcc.x86_64 0RU 4.4.7-4.el6 will be updated

-> Package libgcc.i686 0RU 4.4.7-17.el6 will be an update

-> Package libgcc.x86_64 0RU 4.4.7-17.el6 will be an update

-> Package libgomp.x86_64 0RU 4.4.7-4.el6 will be updated

-> Package libgomp.x86_64 0RU 4.4.7-17.el6 will be an update

-> Running transaction check

-> Package mpfr.x86_64 0RU 2.4.1-6.el6 will be installed

-> Package ppl.x86_64 0RU 0.10.2-11.el6 will be installed

-> Finished Dependency Resolution

Dependencies Resolved

=

Package Arch Version Repository Size

=

Installing:

Gcc x86 million 64 4.4.7-17.el6 base 10 M

Installing for dependencies:

Cloog-ppl x8631 64 0.15.7-1.2.el6 base 93k

Cpp x86 million 64 4.4.7-17.el6 base 3.7m

Mpfr x86 million 64 2.4.1-6.el6 base 157k

Ppl x8631 64 0.10.2-11.el6 base 1.3m

Updating for dependencies:

Libgcc i686 4.4.7-17.el6 base 114k

Libgcc x8631 64 4.4.7-17.el6 base 103k

Libgomp x8631 64 4.4.7-17.el6 base 134k

Transaction Summary

=

Install 5 Package (s)

Upgrade 3 Package (s)

Total download size: 16 M

Is this ok [y/N]:

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