登陆时报以下错误
Unable to get valid context for root
Last login: Wed Jul 24 02:06:01 2013 from 10.64.41.3
单机模式进入后#vi /var/log/secure
Jul 24 02:20:46 JDC2-TMSP-SQL1-NEW sshd[4372]: Accepted password for root from 10.64.41.3 port 60506 ssh2
Jul 24 02:20:46 JDC2-TMSP-SQL1-NEW sshd[4372]: pam_selinux(sshd:session): Security context unconfined_u:system_r:abrt_helper_t:s0-s0:c0.c1023 is not allowed for unconfined_u:system_r:abrt_helper_t:s0-s0:c0.c1023
Jul 24 02:20:46 JDC2-TMSP-SQL1-NEW sshd[4372]: pam_selinux(sshd:session): Unable to get valid context for root
Jul 24 02:20:46 JDC2-TMSP-SQL1-NEW sshd[4372]: pam_unix(sshd:session): session opened for user root by (uid=0)
Jul 24 02:20:47 JDC2-TMSP-SQL1-NEW sshd[4372]: error: ssh_selinux_setup_pty: security_compute_relabel: Invalid argument
解决办法：进入单机模式，关闭SElinux
关闭SElinux不重启系统的方法
Redhat系统，修改/etc/sysconfig/selinux文件：
#SELINUX=enforcing
SELINUX=disabled
重启生效，如果不想重启，用命令
setenforce 0