Log
This message aggregates the data structures related to the log service.
Entry
The log entry contains the message and metadata of a log.
Field | Type | Default | Unit |
---|---|---|---|
boot_uuid |
string |
- |
- |
UUID of the boot during which the log was written. |
|||
cursor |
- |
- |
|
Cursor used to index log entries and to navigate through the logs. |
|||
timestamp |
uint64 |
- |
ns |
The wallclock time at the point in time the entry was received by the journal, in nanoseconds since the epoch UTC. |
|||
module |
- |
- |
|
The module which has written the log. |
|||
level |
- |
- |
|
The log level of the log. |
|||
message |
string |
- |
- |
The message which has been logged. |
Cursor
The cursor uniquely identifies a log entry in the logs.
Field | Type | Default | Unit |
---|---|---|---|
sequence_number_id |
string |
- |
- |
The sequence number ID is used to reference a set of log entries generated by the same systemd-journald instance. |
|||
sequence_number |
uint64 |
- |
- |
The sequence number is assigned to a log entry by the systemd-journald instance when they are written to disk. Every instance numbers their entries sequentially, starting from 1 for the first entry written after subsystem initialization. |
Level
The log level represents the priority of the log.
Name | Value | Description |
---|---|---|
LEVEL_UNSPECIFIED |
0 |
No level is set |
LEVEL_ERROR |
1 |
An error condition was detected Includes the systemd levels: EMERGENCY, ALERT, CRITICAL, ERROR |
LEVEL_WARNING |
2 |
The message indicates that an error will occur if no action is taken Includes the systemd levels: NOTICE, WARNING |
LEVEL_INFO |
3 |
Normal operational messages that require no action Includes the systemd levels: INFORMATIONAL |