CentOS升级乱七八糟问题解决

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Error: Package: libgpod-0.8.-.el7.x86_64 (@epel)
           Requires: libimobiledevice.so.()(64bit)
           Removing: libimobiledevice-1.1.-.el7.x86_64 (@anaconda)
               libimobiledevice.so.()(64bit)
           Updated By: libimobiledevice-1.2.-.el7.x86_64 (base)
              ~libimobiledevice.so.()(64bit)
Error: Package: libgpod-0.8.-.el7.x86_64 (@epel)
           Requires: libplist.so.()(64bit)
           Removing: libplist-1.10-.el7.x86_64 (@anaconda)
               libplist.so.()(64bit)
           Updated By: libplist-1.12-.el7.x86_64 (base)
              ~libplist.so.()(64bit)
Error: Package: libgpod-0.8.-.el7.x86_64 (@epel)
           Requires: libusbmuxd.so.()(64bit)
           Removing: usbmuxd-1.0.-.el7.x86_64 (@anaconda)
               libusbmuxd.so.()(64bit)
           Obsoleted By: usbmuxd-1.1.-.el7.x86_64 (base)
               Not found
 You could try using --skip-broken to work around the problem
** Found  pre-existing rpmdb problem(s), 'yum check' output follows:
libgcc-4.8.-.el7.x86_64 is a duplicate with libgcc-4.8.-.el7.x86_64
libstdc++-4.8.-.el7.x86_64 is a duplicate with libstdc++-4.8.-.el7.x86_64

# rpm --erase --nodeps libstdc++-4.8.-.el7.x86_64
# rpm --erase --nodeps libstdc++-4.8.-.el7.x86_64
# yum install libstdc++

libgcc-4.8.-.el7.x86_64 is a duplicate with libgcc-4.8.-.el7.x86_64
rpm --erase --nodeps libgcc-4.8.-.el7.x86_64
rpm --erase --nodeps libgcc-4.8.-.el7.x86_64
yum install libgcc

yum报错, 说是伯克利的那个嵌入式数据库报错~
重建一下就好了

cd /var/lib/rpm
rm -rf __db*
rpm --rebuilddb

升级一下内核

查了一下, 安装了一堆乱七八糟的
rpm -qa | grep kernel

留一个能用的,全删掉
yum remove -y kernel-xxxxxx

公司服务器不让上网, 那就手动来搞
原命令是这样的,

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
只能先下载下来文件, scp上去, 手动执行一下

https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm 

rpm --import RPM-GPG-KEY-elrepo.org
安装repo
rpm -Uvh elrepo-release-7.0-3.el7.elrepo.noarch.rpm 

然后,还是公司不让联网...好在公司自己有镜像网站, 赞一个, 自己编辑yum repo
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### Name: ELRepo.org Community Enterprise Linux Repository for el7
### URL: http://elrepo.org/

[elrepo]
name=ELRepo.org Community Enterprise Linux Repository - el7
baseurl=http://mirrors.xxxxxxx/elrepo/elrepo/el7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0

[elrepo-testing]
name=ELRepo.org Community Enterprise Linux Testing Repository - el7
baseurl=http://mirrors.xxxxxxx/elrepo/testing/el7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0

[elrepo-kernel]
name=ELRepo.org Community Enterprise Linux Kernel Repository - el7
baseurl=http://mirrors.xxxxxxx/elrepo/kernel/el7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0

[elrepo-extras]
name=ELRepo.org Community Enterprise Linux Extras Repository - el7
baseurl=http://mirrors.xxxxxxx/elrepo/extras/el7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0
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看一下,哪个有效
yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

安装个稳定版本吧:
yum --enablerepo=elrepo-kernel install kernel-ml

安装完
init 6

grub菜单, 选上新内核, 进去, 再次删除不需要的内核,~~~OK
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repo 官网
http://elrepo.org/tiki/tiki-index.php

外国人写的:
https://www.tecmint.com/install-upgrade-kernel-version-in-centos-7/

20200102 升级内核5.4.7

vim /boot/grub2/grub.cfg