我想知道为什么我的LDAP无法login（ssh，sudo或su – ），或者我的networking中断了。
如何重现该问题： – 只需将您的DNS更改为无效（例如：nameserver 100.0.2.2） – 尝试login（su – ）或ssh
/ var / log / secure说：
Feb 26 18:45:39 vmcentos5 sshd[6311]: Accepted password for root from 10.0.2.2 port 59717 ssh2 Feb 26 18:46:19 vmcentos5 sshd[6311]: nss-ldap: do_open: do_start_tls failed:stat=-1 Feb 26 18:46:59 vmcentos5 sshd[6311]: nss-ldap: do_open: do_start_tls failed:stat=-1 Feb 26 18:46:59 vmcentos5 sshd[6311]: nss_ldap: could not search LDAP server - Server is unavailable 但是你不能得到提示工作。
这是pam.d / system-auth：
auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth sufficient pam_ldap.so use_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_deny.so account required pam_access.so account required pam_unix.so account sufficient pam_succeed_if.so uid < 500 quiet account sufficient pam_ldap.so account required pam_permit.so password requisite pam_cracklib.so try_first_pass retry=3 password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok password sufficient pam_ldap.so use_authtok password required pam_deny.so session required pam_mkhomedir.so skel=/etc/skel/ umask=0027 session optional pam_keyinit.so revoke session required pam_limits.so session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid session required pam_unix.so session optional pam_ldap.so
谢谢！