一、问题描述
登录linux系统发现控制台无法登录，即使输入正确用户名和密码，也无法登录，回车看到有一个错误“module is unknow”。
但是，ssh可以正常登录。
二、解决办法
ssh登录，然后注释掉
session required /lib/security/pam_limits.so
改为
session required pam_limits.so
[root@lxy-nfs pam.d]# cat login
#%PAM-1.0
auth [user_unknown=ignore success=ok ignore=ignore default=bad] pam_securetty.so
auth include system-auth
account required pam_nologin.so
account include system-auth
password include system-auth
# pam_selinux.so close should be the first session rule
session required pam_selinux.so close
session required pam_loginuid.so
session optional pam_console.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session required pam_selinux.so open
session required pam_namespace.so
session optional pam_keyinit.so force revoke
session include system-auth
-session optional pam_ck_connector.so
#session required /lib/security/pam_limits.so
session required pam_limits.so
然后重启，登录，正常。
资源链接：