dbus：[system]未能激活服务'org.freedesktop.login1'：超时

Question

我一直在我的服务器的syslog中获得以下错误消息：

# tail /var/log/syslog
Oct 29 13:48:40 myserver dbus[19617]: [system] Failed to activate service 'org.freedesktop.login1': timed out
Oct 29 13:48:40 myserver dbus[19617]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus-org.freedesktop.login1.service'
Oct 29 13:49:05 myserver dbus[19617]: [system] Failed to activate service 'org.freedesktop.login1': timed out
Oct 29 13:49:05 myserver dbus[19617]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus-org.freedesktop.login1.service'

它们似乎与ProFTPd守护进程上的FTP登录相关：

# tail /var/log/proftpd/proftpd.log
2015-10-29 13:48:40,433 myserver proftpd[17872] myserver.example.com (remote.example.com[192.168.22.33]): USER switch: Login successful.
2015-10-29 13:48:40,460 myserver proftpd[17872] myserver.example.com (remote.example.com[192.168.22.33]): FTP session closed.
2015-10-29 13:48:40,664 myserver proftpd[17881] myserver.example.com (remote.example.com[192.168.22.33]): FTP session opened.
2015-10-29 13:49:05,687 myserver proftpd[17881] myserver.example.com (remote.example.com[192.168.22.33]): USER switch: Login successful.
2015-10-29 13:49:05,705 myserver proftpd[17881] myserver.example.com (remote.example.com[192.168.22.33]): FTP session closed.
2015-10-29 13:49:05,908 myserver proftpd[17915] myserver.example.com (remote.example.com[192.168.22.33]): FTP session opened.

不过，FTP登录本身似乎对用户没有任何问题。我有另外几台服务器也在运行ProFTPd，但是到目前为止还没有得到这些错误。

不过，它们可能与最近从Debian 7升级到Debian 8有关。

有什么想法，信息想告诉我，甚至是什么原因？

我已经尝试重新启动dbus和proftpd守护进程，甚至重新启动服务器，并确保DBUS套接字/var/run/dbus/system_bus_socket是存在的，但到目前为止消息仍在继续。

编辑:按注释中所要求的日志的输出：

root@myserver:/home/chammers# systemctl status -l dbus-org.freedesktop.login1.service
● systemd-logind.service - Login Service
   Loaded: loaded (/lib/systemd/system/systemd-logind.service; static)
   Active: active (running) since Tue 2015-10-27 13:23:32 CET; 1 weeks 0 days ago
     Docs: man:systemd-logind.service(8)
           man:logind.conf(5)
           http://www.freedesktop.org/wiki/Software/systemd/logind
           http://www.freedesktop.org/wiki/Software/systemd/multiseat
 Main PID: 467 (systemd-logind)
   Status: "Processing requests..."
   CGroup: /system.slice/systemd-logind.service
           └─467 /lib/systemd/systemd-logind

Oct 28 10:15:25 myserver systemd-logind[467]: New session c3308 of user switch.
Oct 28 10:15:25 myserver systemd-logind[467]: Removed session c3308.
Oct 28 10:15:25 myserver systemd-logind[467]: New session c3309 of user switch.
Oct 28 10:15:25 myserver systemd-logind[467]: Removed session c3309.
Oct 28 10:15:25 myserver systemd-logind[467]: New session c3310 of user switch.
Oct 28 10:15:25 myserver systemd-logind[467]: Removed session c3310.
Oct 28 10:15:25 myserver systemd-logind[467]: New session c3311 of user switch.
Oct 28 10:15:25 myserver systemd-logind[467]: Removed session c3311.
Oct 28 10:19:52 myserver systemd-logind[467]: New session 909 of user chammers.
Oct 28 10:27:11 myserver systemd-logind[467]: Failed to abandon session scope: Transport endpoint is not connected

和更多的日志输出：

Nov 03 16:21:19 myserver dbus[19617]: [system] Failed to activate service 'org.freedesktop.login1': timed out
Nov 03 16:21:19 myserver proftpd[23417]: pam_systemd(proftpd:session): Failed to create session: Activation of org.freedesktop.login1 timed out
Nov 03 16:21:19 myserver proftpd[23418]: pam_systemd(proftpd:session): Failed to create session: Activation of org.freedesktop.login1 timed out
Nov 03 16:21:19 myserver proftpd[23417]: pam_unix(proftpd:session): session closed for user switch
Nov 03 16:21:19 myserver proftpd[23418]: pam_unix(proftpd:session): session closed for user switch
Nov 03 16:21:19 myserver proftpd[23420]: pam_unix(proftpd:session): session opened for user switch by (uid=0)
Nov 03 16:21:19 myserver dbus[19617]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus-org.freedesktop.login1.service'
Nov 03 16:21:19 myserver proftpd[23421]: pam_unix(proftpd:session): session opened for user switch by (uid=0)

Answer 1

重新启动logind：

# systemctl restart systemd-logind

请注意，重新启动dbus将再次中断它们的连接。

Answer 2

重启是唯一对我有效的解决方案。我杀死了失控的dbus进程，其他事情都失败了。

当我试图重新加载httpd时发生了这样的事-

Error getting authority: Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: GDBus.Error:org.freedesktop.DBus.Error.TimedOut: Activation of org.freedesktop.PolicyKit1 timed out (g-dbus-error-quark, 20)
Failed to reload httpd.service: Connection timed out

Centos7是多功能的。

Answer 3

仅仅重新启动系统-logind服务是不够的，它只是推迟了主要的问题。

这似乎是由“/run/systemd/system/”下填充的太多文件造成的，这些文件是由服务创建的，并且没有得到适当的清理，特别是在有大量登录的主机上。最终，您会看到一些奇怪的行为，比如hostnamectl没有报告任何事情，或者timedatectl报告无法查询服务器:连接超时和其他奇怪的事情。以及最初报道的症状。

解决办法之一是删除所有的“会话-*.作用域”文件，并重新启动systemd。在这种情况下，重新启动主机是不必要的。这可能与systemd和dbus中的错误有关，希望在下一次更新中它们将被修复。