linux系统奔溃后的紧急救援模式

背景:


linux系统奔溃后的紧急救援模式(init : Failed to spawn readahead-collector main process :unable to execute)

1.公司同事反馈jenkins没法构建,html

有一台linux虚拟机没法登录,报错信息以下linux

init: Failed to spawn readahead-collector main process: unable to execute: no such file or directory
init: Failed to spawn rcS main process: unable to execute: No such file or directory
init: Failed to spawn readahead main process: unable to execute: No such file or directory
init: Failed to spawn readahead-collector post-stop process: unable to execute: No such file or directory
init: Failed to spawn rcS post-stop process: unable to execute: No such file or directory
init: Failed to spawn kexec-disable main process: unable to execute: No such file or directory
init: Failed to spawn readahead-disable-services main process: unable to execute: No such file or directoryshell

 

因为此时系统启动不了,此时只能采用救援模式登录系统centos

2.使用救援模式(Rescue installed system)登录系统bash

因为系统是虚拟机,全部首先关闭系统后挂载镜像文件网络

启动系统,选择Rescue installed systemide

语言这里就默认选English(也能够选简体中文)post

 

选择链接网络this

选择模式spa

shell  直接进入命令行, 能够进行的操做有编辑文件、修改用户密码等

fakd  诊断模式

reboot  会直接重启

这里选择shell模式

此时就进入shell模式

3.进入root环境恢复系统

   使用如下命令切换到原有的系统

   chroot /mnt/sysimage

此时报错:/bin/sh no such file or directory错误,则须要恢复系统bash环境,须要执行如下命令:

cp -r /sbin /mnt/sysimage
cp -r /bin/* /mnt/sysimage/bin/
cd /mnt/sysimage
cp -r /usr/bin/* .

   此时再从新进入

chroot /mnt/sysimage

   

   执行grub-install命令从新安装GRUB

   grub-install /dev/sda

   

   此时表明修复成功了,重启系统(按理此时能够正常进入系统,但是我这边仍是没法进入系统,此问题留待后续解决吧

   因为此时是联网的,能够将重要文件拷贝(scp)到其余机器上

   

   至此系统尚未恢复,只能经过网络拷贝文件



参考:https://www.cnblogs.com/Yongzhouunknown/p/9397097.html


init : Failed to spawn readahead-collector main process :unable to execute ...

https://blog.51cto.com/11627433/1922007

http://www.bubuko.com/infodetail-2053034.html


centos6单用户模式:卡不动按F5:

https://blog.csdn.net/AhhSong/article/details/77073733

centos6.5系统详细使用救援模式:

https://jingyan.baidu.com/article/4f34706e07fa5ce387b56dcc.html


linux系统奔溃后的紧急救援模式(init : Failed to spawn readahead-collector main process :unable to execute)

https://www.cnblogs.com/Yongzhouunknown/p/9397097.html



Greetings.

anaconda installer init version 13.21.254 starting

mounting /proc filesystem... failed.

I can't recover from this.

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