检查glibc版本

ldd --version

下载glibc2.28的rpm包

参考： https://www.cnblogs.com/caya-yuan/p/10561439.html

下载 glibc、make 的 feroda29(fc29)系统 rpm包 (选用feroda29的包是最接近Centos7的）

相关rpm下载地址： https://github.com/omaidb/centos7_kernel_rpm

包名	作用	下载链接
glibc-2.28-26.fc29.x86_64.rpm	基础包，没个bash用不了	https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-2.28-26.fc29.x86_64.rpm
glibc-common-2.28-26.fc29.x86_64.rpm	基础包的依赖包	https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-common-2.28-26.fc29.x86_64.rpm
glibc-all-langpacks-2.28-26.fc29.x86_64.rpm	语言包，缺的话你的字符终端会看到非常多星星	https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-all-langpacks-2.28-26.fc29.x86_64.rpm
libnsl-2.28-26.fc29.x86_64.rpm	名称空间的库，没有的话su登录不了，dns也无法域名解析	https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/libnsl-2.28-26.fc29.x86_64.rpm
libxcrypt-4.4.4-2.fc29.x86_64.rpm	加密用的库，远程传输都需要用到	https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/libxcrypt-4.4.4-2.fc29.x86_64.rpm

以下5个（缺一不可）装了之后你的系统就能正常用glibc2.28了

# 下载glibc-2.28-26.fc29.x86_64.rpm
wget -c https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-2.28-26.fc29.x86_64.rpm# 下载glibc-common-2.28-26.fc29.x86_64.rpm
wget -c https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-common-2.28-26.fc29.x86_64.rpm# 下载glibc-all-langpacks-2.28-26.fc29.x86_64.rpm
wget -c https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/glibc-all-langpacks-2.28-26.fc29.x86_64.rpm# 下载libnsl-2.28-26.fc29.x86_64.rpm
wget -c https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/libnsl-2.28-26.fc29.x86_64.rpm# 下载libxcrypt-4.4.4-2.fc29.x86_64.rpm
wget -c https://media.githubusercontent.com/media/omaidb/centos7_kernel_rpm/refs/heads/main/centos7_glibc2.28_rpm/libxcrypt-4.4.4-2.fc29.x86_64.rpm

使用rpm包升级到glibc-2.28

# 先创建一个后台会话，防止ssh失联
screen -R rpm# 安装glibc的rpm包
rpm -ivh *.rpm --nodeps --force# 重启系统
reboot

结果验证

重启系统后检查glibc版本

# 检查glibc版本
ldd --version