How to set the redis log

Redis provides a variety of logging options, allowing the configuration of log levels and output locations: log levels: debug, verbose, notice, warning and error, set in the loglevel parameters. Log output location: standard output, file, and system log, respectively set through logfile, syslog-enabled and syslog-ident parameters.

Redis log settings

Redis provides a variety of logging options, allowing users to configure log levels and output locations as needed.

Configure log level

In a Redis configuration file (usually redis.conf ), you can configure the log level by setting the following parameters:

• loglevel : Specifies the log level, optional values ​​include: debug , verbose , notice , warning and error .

Configure log output location

Redis logs can be output to the following locations:

• Standard output (stdout): Log output to the console.
• File: Log output to the specified file.
• System log: The log is output to the operating system log file.

The log output location can be configured with the following parameters:

• logfile : Specify the log file path.
• syslog-enabled : Enables system logging.
• syslog-ident : Specifies the identifier in the system logging.

Sample configuration

Here is a sample configuration that sets the log level to notice and outputs to the file /var/log/redis.log :

 <code>loglevel notice logfile /var/log/redis.log</code>

Other logging options

Redis also offers the following additional logging options:

• slowlog-log-slower-than : Sets the execution time threshold for slow query. Queries that exceed the threshold will be recorded in the slow query log.
• slowlog-max-len : Sets the maximum length of slow query logs.
• aof-rewrite-incremental-fsync : Enables progressive file system synchronization during AOF rewrite.
• aof-use-rdb-preamble : Use RDB leading in AOF files to improve recovery speed.

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