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Symptom
Recently discovered a new failure, the system is running in production for months without a problem, all service on the server suddenly fails.
We suspect there is an error in DBUS or SYSTEMD.
Temporary solution: a complete restart, the system returned to normal!
System Log: / var / log / message
May 22 20:03:08 localhost dbus-daemon: dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:03:08 localhost dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:03:08 localhost systemd-logind: Failed to start session scope session-3963499.scope: Activation of org.freedesktop.systemd1 timed out org.freedesktop.DBus.Error.TimedOut
May 22 20:03:33 localhost dbus-daemon: dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:03:33 localhost dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:03:33 localhost systemd-logind: Failed to start session scope session-3963503.scope: Activation of org.freedesktop.systemd1 timed out org.freedesktop.DBus.Error.TimedOut
May 22 20:03:58 localhost dbus-daemon: dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:03:58 localhost dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
May 22 20:04:26 localhost dbus[897]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out
Found fault system environment
CentOS Linux release 07/02/1511 (Core)
Kernel: 3.10.0-327.10.1.el7.x86_64
systemd: 19.el7_2.4 219
DBU: 06/01/12 13.el7
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.2.1511 (Core)
Release: 7.2.1511
Codename: Core
[root@localhost ~]# rpm -qa|grep systemd
systemd-219-19.el7.x86_64
systemd-python-219-19.el7.x86_64
systemd-libs-219-19.el7.x86_64
systemd-sysv-219-19.el7.x86_64
[root@localhost ~]# rpm -qa|grep dbus
dbusmenu-qt-0.9.2-7.el7.x86_64
dbus-devel-1.6.12-13.el7.x86_64
dbus-libs-1.6.12-13.el7.x86_64
dleyna-connector-dbus-0.2.0-1.el7.x86_64
dbus-python-1.1.1-9.el7.x86_64
python-slip-dbus-0.4.0-2.el7.noarch
dbus-1.6.12-13.el7.x86_64
dbus-x11-1.6.12-13.el7.x86_64
dbus-glib-0.100-7.el7.x86_64
abrt-dbus-2.1.11-36.el7.centos.x86_64
Cause and Solution
Redhat7.2 and CentOS7.2 the default version of dbus-1.6.12-13.el7.x86_64 exist Bug 1325870, taking into account other bug (Bug 1364485) dbus, it is recommended to upgrade to dbus-1.6.12-15.el7 more version.
Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1369460