crontab没有正常执行一次

た入场券 2022-09-06 01:21 158阅读 0赞

##### 异常情况 #####

磁盘告警，发现crontab没有正常执行一次，查询异常日志如下：

[root@gtcq-gt-resource2-07 shell_script]# tailf /var/log/cron
    Feb  3 09:35:01 gtcq-gt-resource2-07 crond[86726]: (root) FAILED to open PAM security session (Permission denied)
    Feb  3 09:35:05 gtcq-gt-resource2-07 crontab[86526]: (root) REPLACE (root)
    Feb  3 09:35:05 gtcq-gt-resource2-07 crontab[86526]: (root) END EDIT (root)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[1143]: (root) RELOAD (/var/spool/cron/root)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87602]: (root) PAM ERROR (Permission denied)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87603]: (root) PAM ERROR (Permission denied)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87602]: (root) FAILED to open PAM security session (Permission denied)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87604]: (root) PAM ERROR (Permission denied)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87603]: (root) FAILED to open PAM security session (Permission denied)
    Feb  3 09:36:01 gtcq-gt-resource2-07 crond[87604]: (root) FAILED to open PAM security session (Permission denied)

##### 异常处理 #####

通过错误日志 ，查看/etc/pam.d/crond  
把所有required改成sufficient就可以了，但具体原因不明确…

[root@gtcq-gt-resource2-07 shell_script]# more /etc/pam.d/crond 
    #
    # The PAM configuration file for the cron daemon
    #
    #
    # No PAM authentication called, auth modules not needed
    account    sufficient   pam_access.so
    account    include    system-auth
    session    sufficient   pam_loginuid.so
    session    include    system-auth
    auth       include    system-auth
    [root@gtcq-gt-resource2-07 shell_script]#

重启服务命令：\[root@centos6 /\]\# service crond restart