Centos7新手，试图安装MariaDB：
sudo yum install mariadb-server mariadb 这就是它吐出来的东西：
Loaded plugins: fastestmirror, langpacks, rhnplugin This system is receiving updates from RHN Classic or Red Hat Satellite. Loading mirror speeds from cached hostfile Package mariadb-server is obsoleted by MariaDB-server, trying to install MariaDB-server-10.1.5-1.el7.centos.x86_64 instead Package mariadb is obsoleted by MariaDB-client, trying to install MariaDB-client-10.1.5-1.el7.centos.x86_64 instead Resolving Dependencies --> Running transaction check ---> Package MariaDB-client.x86_64 0:10.1.5-1.el7.centos will be installed ---> Package MariaDB-server.x86_64 0:10.1.5-1.el7.centos will be installed --> Processing Dependency: perl(Data::Dumper) for package: MariaDB-server-10.1.5-1.el7.centos.x86_64 --> Processing Dependency: perl(DBI) for package: MariaDB-server-10.1.5-1.el7.centos.x86_64 --> Processing Dependency: libjemalloc.so.1()(64bit) for package: MariaDB-server-10.1.5-1.el7.centos.x86_64 --> Running transaction check ---> Package jemalloc.x86_64 0:3.6.0-1.el7 will be installed ---> Package perl-DBI.x86_64 0:1.627-4.el7 will be installed --> Processing Dependency: perl(RPC::PlServer) >= 0.2001 for package: perl-DBI-1.627-4.el7.x86_64 --> Processing Dependency: perl(RPC::PlClient) >= 0.2000 for package: perl-DBI-1.627-4.el7.x86_64 ---> Package perl-Data-Dumper.x86_64 0:2.145-3.el7 will be installed --> Running transaction check ---> Package perl-PlRPC.noarch 0:0.2020-14.el7 will be installed --> Processing Dependency: perl(Net::Daemon) >= 0.13 for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Net::Daemon::Test) for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Net::Daemon::Log) for package: perl-PlRPC-0.2020-14.el7.noarch --> Processing Dependency: perl(Compress::Zlib) for package: perl-PlRPC-0.2020-14.el7.noarch --> Running transaction check ---> Package perl-IO-Compress.noarch 0:2.061-2.el7 will be installed --> Processing Dependency: perl(Compress::Raw::Zlib) >= 2.061 for package: perl-IO-Compress-2.061-2.el7.noarch --> Processing Dependency: perl(Compress::Raw::Bzip2) >= 2.061 for package: perl-IO-Compress-2.061-2.el7.noarch ---> Package perl-Net-Daemon.noarch 0:0.48-5.el7 will be installed --> Running transaction check ---> Package perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 will be installed ---> Package perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ===================================================================== Package Arch Version Repository Size ===================================================================== Installing: MariaDB-client x86_64 10.1.5-1.el7.centos centos7-x86_64-mariadb-10-1 37 M MariaDB-server x86_64 10.1.5-1.el7.centos centos7-x86_64-mariadb-10-1 92 M Installing for dependencies: jemalloc x86_64 3.6.0-1.el7 centos7-x86_64-mariadb-10-1 104 k perl-Compress-Raw-Bzip2 x86_64 2.061-3.el7 centos7-x86_64 32 k perl-Compress-Raw-Zlib x86_64 1:2.061-4.el7 centos7-x86_64 57 k perl-DBI x86_64 1.627-4.el7 centos7-x86_64 802 k perl-Data-Dumper x86_64 2.145-3.el7 centos7-x86_64 47 k perl-IO-Compress noarch 2.061-2.el7 centos7-x86_64 260 k perl-Net-Daemon noarch 0.48-5.el7 centos7-x86_64 51 k perl-PlRPC noarch 0.2020-14.el7 centos7-x86_64 36 k Transaction Summary ===================================================================== Install 2 Packages (+8 Dependent packages) Total size: 131 M Installed size: 557 M Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/centos7-x86_64-mariadb-10-1/packages/jemalloc-3.6.0-1.el7.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 1bb943db: NOKEY Public key for jemalloc-3.6.0-1.el7.x86_64.rpm is not installed
与jemalloc-3.6.0-1.el7.x86_64.rpm没有安装的交易是什么？ 我究竟做错了什么？
您为MariaDB（的testing版）安装了第三方存储库，但是您没有为该存储库安装GPG公钥。 回到你得到它的地方，按照他们的方向获取和安装公钥。