[root@Confluence-Host ~]# yum install mysql-server
     Loaded plugins: fastestmirror, security
     Loading mirror speeds from cached hostfile
      * base: mirror.intergrid.com.au
      * epel: mirror.intergrid.com.au
      * extras: mirror.ventraip.net.au
      * updates: centos.melbourneitmirror.net
     Setting up Install Process
     Package mysql-server is obsoleted by mysql-community-server, trying to install mysql-community-server-5.6.40-2.el7.x86_64 instead
     Resolving Dependencies
     --> Running transaction check
     ---> Package mysql-community-server.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: mysql-community-common(x86-64) = 5.6.40-2.el7 for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: mysql-community-client(x86-64) >= 5.6.10 for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libstdc++.so.6(GLIBCXX_3.4.15)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Running transaction check
     ---> Package mysql-community-client.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: mysql-community-libs(x86-64) >= 5.6.10 for package: mysql-community-client-5.6.40-2.el7.x86_64
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-client-5.6.40-2.el7.x86_64
     ---> Package mysql-community-common.x86_64 0:5.6.40-2.el7 will be installed
     ---> Package mysql-community-server.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libstdc++.so.6(GLIBCXX_3.4.15)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Running transaction check
     ---> Package mysql-community-client.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-client-5.6.40-2.el7.x86_64
     ---> Package mysql-community-libs.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-libs-5.6.40-2.el7.x86_64
     ---> Package mysql-community-server.x86_64 0:5.6.40-2.el7 will be installed
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: systemd for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libstdc++.so.6(GLIBCXX_3.4.15)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-server-5.6.40-2.el7.x86_64
     --> Finished Dependency Resolution
     Error: Package: mysql-community-server-5.6.40-2.el7.x86_64 (mysql56-community)
                Requires: libc.so.6(GLIBC_2.17)(64bit)
     Error: Package: mysql-community-server-5.6.40-2.el7.x86_64 (mysql56-community)
       Requires: systemd
     Error: Package: mysql-community-libs-5.6.40-2.el7.x86_64 (mysql56-community)
       Requires: libc.so.6(GLIBC_2.17)(64bit)
     Error: Package: mysql-community-server-5.6.40-2.el7.x86_64 (mysql56-community)
       Requires: libstdc++.so.6(GLIBCXX_3.4.15)(64bit)
     Error: Package: mysql-community-client-5.6.40-2.el7.x86_64 (mysql56-community)
       Requires: libc.so.6(GLIBC_2.17)(64bit)
      You could try using --skip-broken to work around the problem
      You could try running: rpm -Va --nofiles --nodigest