System Logs for MariaDB Enterprise ColumnStore 1.5
This page is part of MariaDB's Documentation.
The parent of this page is: Logging for MariaDB Enterprise ColumnStore 1.5
Topics on this page:
Overview
MariaDB Enterprise ColumnStore 1.5 writes to several different system log files that contain messages for different log levels.
Reference material is available for MariaDB Enterprise ColumnStore 1.5.
MariaDB Enterprise ColumnStore 1.5 is included with MariaDB Enterprise Server 10.5.
Purpose
The system logs are intended for:
Monitoring the system status
Diagnosing problems with queries
Diagnosing communication problems between nodes
Format
The system logs use the following log format:
timestamp hostname process name[pid] time | session id | txn id | thread id | logging level subsystem_id message
The fields in each log message are:
Field | Description |
---|---|
| The timestamp for the log message in the format |
| The hostname of the node that logged the message |
| The name of the ColumnStore process (such as |
| Execution time for this step in seconds |
| The session ID that shows in the process list |
| The transaction ID |
| The thread ID |
| The log level for the log message |
| The subsystem ID for the log message |
| The log message. |
Log Levels
The system logs use the following log levels in the logging level
field:
Log Level ID | Log Level Name |
---|---|
| Critical |
| Debug |
| Error |
| Info |
| Warning |
Subsystem IDs
The system logs use the following subsystem IDs in the subsystem id
field:
Subsystem ID | Subsystem Name |
---|---|
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Location
MariaDB Enterprise ColumnStore 1.5 writes its system logs to the /var/log/mariadb/columnstore/
directory.
The system logs are divided into 5 different log files:
crit.log
debug.log
err.log
info.log
warning.log
Configuration
MariaDB Enterprise ColumnStore 1.5 uses rsyslog
to configure its system logs.
By default, the rsyslog
configuration is at /etc/rsyslog.d/49-columnstore.conf
.