auth.log 中记录了错误,但一切正常

auth.log 中记录了错误,但一切正常

您好,我有一台 Linux 服务器 (18.04),它使用 netatalk 服务充当 TimeMachine 备份服务器。用户使用 LDAP (/etc/ldap.conf) 进行身份验证

客户端可以连接到 AFP 安装,进行 TimeMachine 备份并顺利注销。如果您需要共享更多 conf 文件,请告诉我。

AFPD 版本:

    afpd -V
afpd 2.2.6 - Apple Filing Protocol (AFP) daemon of Netatalk

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version. Please see the file COPYING for further information and details.

afpd has been compiled with support for these features:

          AFP versions: 1.1 2.0 2.1 2.2 3.0 3.1 3.2 3.3 
DDP(AppleTalk) Support: Yes
         CNID backends: dbd last tdb 
           SLP support: No
      Zeroconf support: Avahi
  TCP wrappers support: Yes
         Quota support: Yes
   Admin group support: Yes
    Valid shell checks: Yes
      cracklib support: Yes
        Dropbox kludge: No
  Force volume uid/gid: No
            EA support: ad | sys
           ACL support: Yes
          LDAP support: Yes

             afpd.conf: /etc/netatalk/afpd.conf
   AppleVolumes.system: /etc/netatalk/AppleVolumes.system
  AppleVolumes.default: /etc/netatalk/AppleVolumes.default
    afp_signature.conf: /etc/netatalk/afp_signature.conf
      afp_voluuid.conf: /etc/netatalk/afp_voluuid.conf
         afp_ldap.conf: /etc/netatalk/afp_ldap.conf
       UAM search path: /usr/lib/netatalk/
  Server messages path: /etc/netatalk/msg/
              lockfile: /var/run/afpd.pid

/etc/pam.d/common-auth

#
# /etc/pam.d/common-auth - authentication settings common to all services
#
# This file is included from other service-specific PAM config files,
# and should contain a list of the authentication modules that define
# the central authentication scheme for use on the system
# (e.g., /etc/shadow, LDAP, Kerberos, etc.).  The default is to use the
# traditional Unix authentication mechanisms.
#
# As of pam 1.0.1-6, this file is managed by pam-auth-update by default.
# To take advantage of this, it is recommended that you configure any
# local modules either before or after the default block, and use
# pam-auth-update to manage selection of other modules.  See
# pam-auth-update(8) for details.

#auth required pam_listfile.so onerr=fail item=group sense=allow file=/etc/login.group.allowed
# here are the per-package modules (the "Primary" block)
auth    [success=2 default=ignore]      pam_unix.so nullok_secure
auth    [success=1 default=ignore]      pam_ldap.so use_first_pass
# here's the fallback if no module succeeds
auth    requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
auth    required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
auth    optional                        pam_cap.so
# end of pam-auth-update config

/etc/pam.d/通用帐户

#
# /etc/pam.d/common-account - authorization settings common to all services
#
# This file is included from other service-specific PAM config files,
# and should contain a list of the authorization modules that define
# the central access policy for use on the system.  The default is to
# only deny service to users whose accounts are expired in /etc/shadow.
#
# As of pam 1.0.1-6, this file is managed by pam-auth-update by default.
# To take advantage of this, it is recommended that you configure any
# local modules either before or after the default block, and use
# pam-auth-update to manage selection of other modules.  See
# pam-auth-update(8) for details.
#

# here are the per-package modules (the "Primary" block)
account [success=2 new_authtok_reqd=done default=ignore]        pam_unix.so
account [success=1 default=ignore]      pam_ldap.so
# here's the fallback if no module succeeds
account requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
account required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
# end of pam-auth-update config

/etc/pam.d/common-session

#
# /etc/pam.d/common-session - session-related modules common to all services
#
# This file is included from other service-specific PAM config files,
# and should contain a list of modules that define tasks to be performed
# at the start and end of sessions of *any* kind (both interactive and
# non-interactive).
#
# As of pam 1.0.1-6, this file is managed by pam-auth-update by default.
# To take advantage of this, it is recommended that you configure any
# local modules either before or after the default block, and use
# pam-auth-update to manage selection of other modules.  See
# pam-auth-update(8) for details.

# here are the per-package modules (the "Primary" block)
session [default=1]                     pam_permit.so
# here's the fallback if no module succeeds
session requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
session required                        pam_permit.so
# The pam_umask module will set the umask according to the system default in
# /etc/login.defs and user settings, solving the problem of different
# umask settings with different shells, display managers, remote sessions etc.
# See "man pam_umask".
session optional                        pam_umask.so
# and here are more per-package modules (the "Additional" block)
session required        pam_unix.so
session optional                        pam_ldap.so
session optional        pam_systemd.so
session optional                        pam_mkhomedir.so skel=/etc/skel/ umask=0066
# end of pam-auth-update config

/etc/pam.d/通用密码

#
# /etc/pam.d/common-password - password-related modules common to all services
#
# This file is included from other service-specific PAM config files,
# and should contain a list of modules that define the services to be
# used to change user passwords.  The default is pam_unix.

# Explanation of pam_unix options:
#
# The "sha512" option enables salted SHA512 passwords.  Without this option,
# the default is Unix crypt.  Prior releases used the option "md5".
#
# The "obscure" option replaces the old `OBSCURE_CHECKS_ENAB' option in
# login.defs.
#
# See the pam_unix manpage for other options.

# As of pam 1.0.1-6, this file is managed by pam-auth-update by default.
# To take advantage of this, it is recommended that you configure any
# local modules either before or after the default block, and use
# pam-auth-update to manage selection of other modules.  See
# pam-auth-update(8) for details.

# here are the per-package modules (the "Primary" block)
password        requisite                       pam_cracklib.so retry=3 minlen=8 difok=3
password        [success=2 default=ignore]      pam_unix.so obscure use_authtok try_first_pass sha512
password        [success=1 user_unknown=ignore default=die]     pam_ldap.so use_authtok try_first_pass
# here's the fallback if no module succeeds
password        requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
password        required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
# end of pam-auth-update config

错误日志在 auth.log 中

Jul 20 11:05:17 server afpd[5131]: pam_unix(netatalk:auth): authentication failure; logname= uid=0 euid=0 tty=afpd ruser=demouser rhost=192.168.1.10  user=demouser
Jul 20 11:05:17 server afpd[5131]: pam_unix(netatalk:session): session opened for user demouser by (uid=0)
Jul 20 11:05:17 server systemd-logind[1166]: New session c23 of user demouser.
Jul 20 11:06:21 server afpd[5131]: pam_unix(netatalk:session): session closed for user demouser
Jul 20 11:06:21 server dbus-daemon[1278]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.69" (uid=10001 pid=5131 comm="/usr/sbin/afpd -U uams_dhx2.so,uams_clrtxt.so -g n" label="unconfined") interface="org.freedesktop.login1.Manager" member="ReleaseSession" error name="(unset)" requested_reply="0" destination="org.freedesktop.login1" (uid=0 pid=1166 comm="/lib/systemd/systemd-logind " label="unconfined")
Jul 20 11:06:21 server afpd[5131]: pam_systemd(netatalk:session): Failed to release session: Access denied
Jul 20 11:06:21 server afpd[5131]: PAM audit_log_acct_message() failed: Operation not permitted
Jul 20 11:06:21 server systemd-logind[1166]: Removed session c23.

答案1

我设法通过替换 /etc/pam.d/netatalk 文件来修复除以下错误之外的所有错误:

#%PAM-1.0

@include common-auth
@include common-account
@include common-password
@include common-session

到:

#%PAM-1.0
auth required pam_ldap.so try_first_pass
account required pam_ldap.so try_first_pass
session required pam_permit.so

会话终止后,仍然会出现以下错误:

Jul 23 13:52:05 server afpd[2426]: PAM audit_log_acct_message() failed: Operation not permitted

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