ftp服务结合pam_mysql 使用错误
一.错误问题1
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# tail /var/log/secure
Sep 12 11:39:48 RedHat-5 vsftpd: PAM adding faulty module: /lib/security/pam_mysql.so
Sep 12 11:42:39 RedHat-5 vsftpd: PAM unable to dlopen(/lib/security/pam_mysql.so)
Sep 12 11:42:39 RedHat-5 vsftpd: PAM
Sep 12 11:42:39 RedHat-5 vsftpd: PAM adding faulty module: /lib/security/pam_mysql.so
Sep 12 11:42:59 RedHat-5 vsftpd: PAM unable to dlopen(/lib/security/pam_mysql.so)
Sep 12 11:42:59 RedHat-5 vsftpd: PAM
Sep 12 11:42:59 RedHat-5 vsftpd: PAM adding faulty module: /lib/security/pam_mysql.so
Sep 12 11:44:30 RedHat-5 vsftpd: PAM unable to dlopen(/lib/security/pam_mysql.so)
Sep 12 11:44:30 RedHat-5 vsftpd: PAM
Sep 12 11:44:30 RedHat-5 vsftpd: PAM adding faulty module: /lib/security/pam_mysql.so
二.解决方法
经过仔细查看前面的步骤，发现原来make install的时候默认安装在/usr/local/lib下。修改/etc/pam.d/vsftpd.mysql文件
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auth required /usr/lib/security/pam_mysql.so user=vsftpd passwd=www.luochen.com host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=password crypt=0
account required /usr/lib/security/pam_mysql.so user=vsftpd passwd=www.luochen.com host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=password crypt=0
在登录，成功！换用其他加密方式，也都可以。
然后试验pam_mysql v0.7新加的config_file配置选项。这个选项用来指定一个配置文件，可以把所有pam_mysql的配置放在这个文件中。这样的话，/etc/pam.d/vsftpd.mysql的内容变成这样:
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auth required /usr/lib/security/pam_mysql.so config_file=/etc/security/pam_mysql.conf
account required /usr/lib/security/pam_mysql.so config_file=/etc/security/pam_mysql.conf
/etc/security/pam_mysql.conf的内容:
users.host=localhost
users.database=vsftpd
users.db_user=root
users.db_passwd=redhat
users.table=users
users.user_column=name
users.password_column=password
users.password_crypt=3
verbose=1
log.enabled=1
log.table=logs
log.message_column=msg
log.pid_column=pid
log.user_column=user
log.host_column=host
log.rhost_column=rhost
log.time_column=logtime
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