MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
This section describes the configuration for server.
For information on the configured loggers, see Section 29.12.21.1, “The setup_loggers Table”.
The following are the server telemetry logging system variables:
System Variable | telemetry.log_enabled |
---|---|
Scope | Global |
Dynamic | Yes |
SET_VAR Hint Applies |
No |
Type | Boolean |
Default Value | ON |
Controls whether telemetry logs are exported or not.
telemetry.otel_exporter_otlp_logs_protocol
System Variable | telemetry.otel_exporter_otlp_logs_protocol |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Enumeration |
Default Value | http/protobuf |
Valid Values |
|
OTLP transport protocol
telemetry.otel_exporter_otlp_logs_endpoint
System Variable | telemetry.otel_exporter_otlp_logs_endpoint |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value | http://localhost:4318/v1/logs |
Target URL to which the exporter sends logs.
telemetry.otel_exporter_otlp_logs_network_namespace
System Variable | telemetry.otel_exporter_otlp_logs_network_namespace |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value | [none] |
(Linux only) Network namespace to use when sending data to the logs endpoint.
telemetry.otel_exporter_otlp_logs_certificates
System Variable | telemetry.otel_exporter_otlp_logs_certificates |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value |
|
The trusted certificate to use when verifying a server's TLS credentials.
telemetry.otel_exporter_otlp_logs_client_key
System Variable | telemetry.otel_exporter_otlp_logs_client_key |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value |
|
Client's private key in PEM format.
telemetry.otel_exporter_otlp_logs_client_certificates
System Variable | telemetry.otel_exporter_otlp_logs_client_certificates |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value |
|
Client certificate/chain trust for client's private key in PEM format.
telemetry.otel_exporter_otlp_logs_headers
System Variable | telemetry.otel_exporter_otlp_logs_headers |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value |
|
A list of headers to apply to all outgoing logs
telemetry.otel_exporter_otlp_logs_compression
System Variable | telemetry.otel_exporter_otlp_logs_compression |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value | none (no compression) |
Valid Values |
|
Compression used by log exporter.
telemetry.otel_exporter_otlp_logs_timeout
System Variable | telemetry.otel_exporter_otlp_logs_timeout |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Integer |
Default Value | 10000 |
Unit | milliseconds |
Time in milliseconds the OTLP exporter waits for each batch export.
telemetry.otel_blrp_schedule_delay
System Variable | telemetry.otel_blrp_schedule_delay |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Integer |
Default Value | 5000 |
Unit | milliseconds |
Delay interval between two consecutive exports in milliseconds.
telemetry.otel_blrp_max_queue_size
System Variable | telemetry.otel_blrp_max_queue_size |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Integer |
Default Value | 2048 |
Maximum queue size.
telemetry.otel_blrp_max_export_batch_size
System Variable | telemetry.otel_blrp_max_export_batch_size |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Integer |
Default Value | 512 |
Maximum batch size.
telemetry.otel_exporter_otlp_logs_min_tls
System Variable | telemetry.otel_exporter_otlp_logs_min_tls |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Enumeration |
Default Value | [none] |
Valid Values |
|
The minimum accepted TLS version. If left empty, TLS 1.2 is used.
telemetry.otel_exporter_otlp_logs_max_tls
System Variable | telemetry.otel_exporter_otlp_logs_max_tls |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | Enumeration |
Default Value | [none] |
Valid Values |
|
The maximum accepted TLS version. If left empty, there is no maximum TLS version.
telemetry.otel_exporter_otlp_logs_cipher
System Variable | telemetry.otel_exporter_otlp_logs_cipher |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value | [list of ciphers] |
Current list of TLS 1.2 ciphers to use for logs. The current default is:
ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384: ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305: ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM:ECDHE-ECDSA-AES128-CCM: DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-CCM: DHE-RSA-AES128-CCM:DHE-RSA-CHACHA20-POLY1305
telemetry.otel_exporter_otlp_logs_cipher_suite
System Variable | telemetry.otel_exporter_otlp_logs_cipher_suite |
---|---|
Scope | Global |
Dynamic | No |
SET_VAR Hint Applies |
No |
Type | String |
Default Value | [none] |
Current list of TLS 1.3 ciphers to use for logs. The current default is:
TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_CCM_SHA256
This section describes the logger-related status variables.
Telemetry_logs_supported
:
displays whether the server was compiled with Telemetry
logging support.
Performance_schema_logger_lost
:
Displays the number of logger instruments which failed to
be created.
This section describes the logger-related command line configuration options.
performance-schema-logger
:
defines the default values for loggers. This can be
defined multiple times, similarly to
--performance-schema-instrument
.
In the following example, all loggers are configured with
the error level ERROR
, except
foo
and bar
which
are configured to error level INFO
and
WARNING
, respectively:
--performance-schema-logger = 'logger/% = Level:ERROR' --performance-schema-logger = 'logger/foo/% = Level:INFO' --performance-schema-logger = 'logger/bar/% = Level:WARNING'
To see the configured loggers, run the following:
select * from performance_schema.setup_loggers; +------------------------+-------+--------------------+ | NAME | LEVEL | DESCRIPTION | +------------------------+-------+--------------------+ | logger/error/error_log | info | MySQL error logger | +------------------------+-------+--------------------+
This example shows the default MySQL error logger. This can be set to one of the following values:
none
error
warn
info
debug
The following example changes the error logging level to WARNING:
mysql>UPDATE performance_schema.setup_loggers
SET LEVEL='WARN'
performance_schema_max_logger_classes
:
this system variable can also be set from the command
line. For example:
--performance_schema_max_logger_classes=100
Editing this value requires a server restart.