SELinux导致故障解决实例

共计 2520 个字符，预计需要花费 7 分钟才能阅读完成。

这样的报错还是第一次遇到，排查过程没有头绪，一直纠结在 child setpgid 这个地方，还好在 google 过程中看到有人在设置 selinux 的时候的相关案例，于是想到从这方面入手。

原因为 selinux 开启导致的，但是比较诡异的是从别的 terminal ssh 跳转过去之后无法执行任何操作，包括配置 selinux，后来还是从后台远程管理口登陆上去之后设置并重启，彻底解决这个问题。

-bash-4.3# ls
-bash: child setpgid (16790 to 16790): Permission denied
ls: cannot access RHEL6.2-20111117.0-Server-ppc64-DVD1.iso: Permission denied
ls: cannot access rhel-server-6.2-x86_64-dvd.iso: Permission denied
ls: cannot access install.log.syslog: Permission denied
ls: cannot access anaconda-ks.cfg: Permission denied
ls: cannot access install.log: Permission denied
anaconda-ks.cfg  Documents  install.log        Music    Public                                    rhel-server-6.2-x86_64-dvd.iso  Videos
Desktop          Downloads  install.log.syslog  Pictures  RHEL6.2-20111117.0-Server-ppc64-DVD1.iso  Templates
-bash-4.3# su – streamsadmin
-bash: child setpgid (16792 to 16792): Permission denied
-bash: su: command not found
-bash-4.3# top
-bash: child setpgid (16793 to 16793): Permission denied

        top: failed tty set: Input/output error
-bash-4.3# free -m
-bash: child setpgid (16794 to 16794): Permission denied
            total      used      free    shared    buffers    cached
Mem:        129045      18018    111026          0        227      15605
-/+ buffers/cache:      2186    126859
Swap:        10239          0      10239
-bash-4.3# cat .bash_profile
-bash: child setpgid (16796 to 16796): Permission denied
cat: .bash_profile: Permission denied
-bash-4.3# ls -l
-bash: child setpgid (16803 to 16803): Permission denied
ls: cannot access RHEL6.2-20111117.0-Server-ppc64-DVD1.iso: Permission denied
ls: cannot access rhel-server-6.2-x86_64-dvd.iso: Permission denied
ls: cannot access install.log.syslog: Permission denied
ls: cannot access anaconda-ks.cfg: Permission denied
ls: cannot access install.log: Permission denied
total 32
-?????????? ? ?    ?      ?            ? anaconda-ks.cfg
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Desktop
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Documents
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Downloads
-?????????? ? ?    ?      ?            ? install.log
-?????????? ? ?    ?      ?            ? install.log.syslog
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Music
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Pictures
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Public
-?????????? ? ?    ?      ?            ? RHEL6.2-20111117.0-Server-ppc64-DVD1.iso
-?????????? ? ?    ?      ?            ? rhel-server-6.2-x86_64-dvd.iso
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Templates
drwxr-xr-x. 2 root root 4096 Dec 18 22:43 Videos
-bash-4.3#

-EOF-

SELinux 安全上下文初探 http://www.linuxidc.com/Linux/2014-04/99508.htm

一次由 SELinux 引起的 SSH 公钥认证失败问题 http://www.linuxidc.com/Linux/2013-07/87267.htm

SELinux 入门教程 http://www.linuxidc.com/Linux/2013-04/82371.htm

SELinux 简单配置 http://www.linuxidc.com/Linux/2012-12/77032.htm

CentOS 系统如何快速关闭 SELinux http://www.linuxidc.com/Linux/2012-11/74613.htm