Linux 配置yum源.

Linux 配置yum源.

环境：虚拟机中安装了RedHat ，在进行安装mariadb的时候，出现如下错误。是因为yum源的问题，需要进行配置yum源。本教程是配置本地yum源。

 [root@localhost yum.repos.d]# yum groups install mariadb mariadb-client -y
 Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
 This system is not registered with an entitlement server. You can use subscription-manager to register.
 There are no enabled repos.
  Run "yum repolist all" to see the repos you have.
  To enable Red Hat Subscription Management repositories:
      subscription-manager repos --enable <repo>
  To enable custom repositories:
      yum-config-manager --enable <repo>

选中虚拟机中的操作系统，鼠标：右键-->>设置

在弹出的“虚拟机设置” 窗口中，选择：CD/DVD -->>设备状态（已连接，确保打上勾即可）

在Linux的终端输入：mount 指令，可以查看到有块设备被加载进来了,见红色标注，相关信息如下：

 [root@localhost yum.repos.d]# mount
 sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime,seclabel)
 proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
 devtmpfs on /dev type devtmpfs (rw,nosuid,seclabel,size=917580k,nr_inodes=,mode=)
 securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
 tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,seclabel)
 devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,seclabel,gid=,mode=,ptmxmode=)
 tmpfs on /run type tmpfs (rw,nosuid,nodev,seclabel,mode=)
 tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,seclabel,mode=)
 cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
 pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
 cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
 cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
 cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
 cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
 cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
 cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
 cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
 cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
 cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_prio,net_cls)
 cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
 configfs on /sys/kernel/config type configfs (rw,relatime)
 /dev/mapper/rhel-root on / type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
 selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
 systemd- on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=,pgrp=,timeout=,minproto=,maxproto=,direct,pipe_ino=)
 hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel)
 debugfs on /sys/kernel/debug type debugfs (rw,relatime)
 mqueue on /dev/mqueue type mqueue (rw,relatime,seclabel)
 nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
 /dev/sda1 on /boot type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
 sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
 tmpfs on /run/user/ type tmpfs (rw,nosuid,nodev,relatime,seclabel,size=186704k,mode=,uid=,gid=)
 fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
 gvfsd-fuse on /run/user//gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=,group_id=)
 tmpfs on /run/user/ type tmpfs (rw,nosuid,nodev,relatime,seclabel,size=186704k,mode=)
 /dev/sr0 on /run/media/hk-super/RHEL-7.4 Server.x86_64 type iso9660 (ro,nosuid,nodev,relatime,uid=,gid=,iocharset=utf8,mode=,dmode=,uhelper=udisks2)

使用root账号（切换root指令：su - root），在/mnt 目录下创建一个目录。

　　指令： mkdir /mnt/dvd

然后卸载/dev/sr0 ，然后挂在到/mnt/dvd ，进入的/mnt/dvd，就可以查看到镜像内的文件了。

相关指令如下：

　　卸载： umount /dev/sr0

　　重新挂在: mount /dev/sr0 /mnt/dvd

　　进入dvd目录: cd /mnt/dvd（此时也进入到镜像文件内了）

　　查看镜像内的文件：ls -l ( l是字母 )

　　

镜像加载到Linux之后，开始配置repo文件，相关指令如下：

　　cd /etc/yum.repos.d/

　　vim  hello.repo (名字随便起，但后缀名必须是：.repo)

　　

　　hello.repo 文件内容如下：

 [base]
 name=base
 baseurl=file:///mnt/dvd
 enabled=
 gpgcheck=

然后分别输入如下指令：

　　 yum clean all

　　yum makecache

 [root@localhost yum.repos.d]# yum clean all
 Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
 This system is not registered with an entitlement server. You can use subscription-manager to register.
 Cleaning repos: base
 Cleaning up everything
 Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
 [root@localhost yum.repos.d]#
 [root@localhost yum.repos.d]#
 [root@localhost yum.repos.d]#
 [root@localhost yum.repos.d]# yum makecache
 Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
 This system is not registered with an entitlement server. You can use subscription-manager to register.
 base                                                                                                       | 4.1 kB  ::
 (/): base/filelists_db                                                                                   | 3.4 MB  ::
 (/): base/group_gz                                                                                       |  kB  ::
 (/): base/other_db                                                                                       | 1.5 MB  ::
 (/): base/productid                                                                                      | 1.6 kB  ::
 (/): base/primary_db                                                                                     | 4.0 MB  ::
 Metadata Cache Created
 [root@localhost yum.repos.d]# 

上面操作反显的日志，说明yum源配置完成。

然后再次输入安装指令：yum groups install mariadb mariadb-client -y  无报错信息，marridb安装成功。

如有问题，欢迎纠正！！！

如有转载，请标明源处：https://www.cnblogs.com/Charles-Yuan/p/9786415.html