怎么办linux启动不起来升级glibc导致CentOS启动不了卡住启动画面紧急补救恢复数据

布满荆棘的人生 2023-07-11 11:28 5阅读 0赞

前段时间更新glibc版本，把/usr/lib64/libc-2.12.so & libc.so.6 -> libc-2.12.so 这个软连接更改之后导致报错：

ls: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory

无法远程登录，终端也无法登录，也无法单用户登录，如图：

nano   /mnt/sysimage/etc/sysconfig/selinux

ldconfig -l -v /lib64/libc-2.12.so

/opt/modules/flume/bin/flume-ng agent –conf conf/ –name a1 –conf-file job/flume-telnet-logger.conf -Dflume.root.logger=INFO,console

alias  "flume"="/opt/modules/flume/bin/flume-ng agent –conf conf/ –name a1 –conf-file job/flume-telnet-logger.conf -Dflume.root.logger=INFO,console"

chroot /mnt/syimage/

telnet localhost 44444

最终版本：  
echo  $LD\_LIBRARY\_PATH  
export LD\_LIBRARY\_PATH=/usr/lib64/:$LD\_LIBRARY\_PATH  
export LD\_LIBRARY\_PATH=/opt/soft/gc/glibc-2.17/lib:$LD\_LIBRARY\_PATH  
export LD\_LIBRARY\_PATH=/opt/soft/gc/glibc-2.17/lib:$LD\_LIBRARY\_PATH

strings /lib64/libc.so.6 | grep GLIBC  
ls  -l   /lib64/libc.so.6  
ln -sf /opt/soft/gc/glibc-2.17/lib/libc-2.17.so  /lib64/libc.so.6  
ln -sf /usr/lib64/libc-2.12.so  /lib64/libc.so.6  
ls  -l   /lib64/libc.so.6  
\[root@vir-centos7 ~\]\# mkdir /tmp/myroot/lib64 -p  
\[root@vir-centos7 ~\]\# cp /lib64/libtinfo.so.5 /tmp/myroot/lib64/  
\[root@vir-centos7 ~\]\# cp /lib64/libdl.so.2 /tmp/myroot/lib64/  
\[root@vir-centos7 ~\]\# cp /lib64/libc.so.6 /tmp/myroot/lib64/  
\[root@vir-centos7 ~\]\# cp /lib64/ld-linux-x86-64.so.2 /tmp/myroot/lib64/  
\[root@vir-centos7 ~\]\# chroot /tmp/myroot

/opt/soft/gc/glibc-2.17/build  
恢复：  
export LD\_PRELOAD=/lib64/libc-2.12.so  
\[root@CentOSA lib64\]\# ldconfig  
export LD\_LIBRARY\_PATH=/lib64:$LD\_LIBRARY\_PATH

cp /usr/glibc-2.17/lib/libc-2.17.so /lib64/libc-2.17.so

libc-2.17.so  
ln -s /lib64/libc-2.17.so /lib64/libc.so.6

/opt/soft/gc/glibc-2.17/build  
$((expression))  
$\[expression\]  
expr expression

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出现错误：  chroot:  failed  to  run  command  '/bin/sh'  : No  such  file  or  directory

ldd /mnt/vh2/bin/bash

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