1ORG.FREEDESKTOP.LOGCONTROL1o(r5g).freedesktop.LogContOrRoGl.1FREEDESKTOP.LOGCONTROL1(5)
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NAME

6       org.freedesktop.LogControl1 - D-Bus interface to query and set logging
7       configuration
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INTRODUCTION

10       org.freedesktop.LogControl1 is a generic interface that is intended to
11       be used by any daemon which allows the log level and target to be set
12       over D-Bus. It is implemented by various daemons that are part of the
13       systemd(1) suite.
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15       It is assumed that those settings are global for the whole program, so
16       a fixed object path is used. The interface should always be available
17       under the path /org/freedesktop/LogControl1.
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DESCRIPTION

20       The following interface is exposed:
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22           node /org/freedesktop/LogControl1 {
23             interface org.freedesktop.LogControl1 {
24               properties:
25                 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
26                 @org.freedesktop.systemd1.Privileged("true")
27                 readwrite s LogLevel = '...';
28                 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
29                 @org.freedesktop.systemd1.Privileged("true")
30                 readwrite s LogTarget = '...';
31                 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
32                 readonly s SyslogIdentifier = '...';
33             };
34             interface org.freedesktop.DBus.Peer { ... };
35             interface org.freedesktop.DBus.Introspectable { ... };
36             interface org.freedesktop.DBus.Properties { ... };
37           };
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44   Properties
45       LogLevel describes the syslog(3)-style log-level, and should be one of
46       "emerg", "alert", "crit", "err", "warning", "notice", "info", "debug",
47       in order of increasing verbosity.
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49       LogTarget describes the log target (mechanism). It should be one of
50       "console" (log to the console or standard output), "kmsg" (log to the
51       kernel ring buffer), "journal" (log to the journal natively, see
52       systemd-journald.service(8)), "syslog" (log using the syslog(3) call).
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54       Those two properties are writable, so they may be set by sufficiently
55       privileged users.
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57       SyslogIdentifier is a read-only property that shows the "syslog
58       identifier". It is a short string that identifies the program that is
59       the source of log messages that is passed to the syslog(3) call.
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TOOLS

62       journalctl option -p/--priority= may be used to filter log messages by
63       log level, option -t/--identifier= may be used to by the syslog
64       identifier, and filters like "_TRANSPORT=syslog", "_TRANSPORT=journal",
65       and "_TRANSPORT=kernel" may be used to filter messages by the mechanism
66       through which they reached systemd-journald.
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68       systemctl log-level and systemctl log-target verbs may be used to query
69       and set the LogLevel and LogTarget properties of the service manager.
70       systemctl service-log-level and systemctl service-log-target may
71       similarly be used for individual services. (Services must have the
72       BusName= property set and must implement the interface described here.
73       See systemd.service(5) for details about BusName=.)
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SEE ALSO

76       systemd(1), journalctl(1), systemctl(1), systemd.service(5), syslog(3)
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80systemd 251                                     ORG.FREEDESKTOP.LOGCONTROL1(5)
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