MySQL 8.3 Release Notes
本节描述了服务器和客户端 OpenTelemetry 支持的安装。
要安装服务器组件，请运行以下命令：
install component 'file://component_telemetry';要确认组件是否存在于服务器中，请运行以下查询：
mysql> select * from mysql.component;
+--------------+--------------------+------------------------------------+
| component_id | component_group_id | component_urn |
+--------------+--------------------+------------------------------------+
| 1 | 1 | file://component_validate_password |
| 2 | 2 | file://component_telemetry |
+--------------+--------------------+------------------------------------+如果 component_telemetry 存在于 component_urn 列中，则表示组件已安装。
组件安装还添加了遥测特定的系统变量。
mysql> show variables like "%telemetry%";
+----------------------------------------------------------+----------------------------------+
| Variable_name | Value |
+----------------------------------------------------------+----------------------------------+
| telemetry.metrics_enabled | ON |
| telemetry.metrics_reader_frequency_1 | 10 |
| telemetry.metrics_reader_frequency_2 | 60 |
| telemetry.metrics_reader_frequency_3 | 0 |
| telemetry.otel_bsp_max_export_batch_size | 512 |
| telemetry.otel_bsp_max_queue_size | 2048 |
| telemetry.otel_bsp_schedule_delay | 5000 |
| telemetry.otel_exporter_otlp_metrics_certificates | |
| telemetry.otel_exporter_otlp_metrics_cipher | |
| telemetry.otel_exporter_otlp_metrics_cipher_suite | |
| telemetry.otel_exporter_otlp_metrics_client_certificates | |
| telemetry.otel_exporter_otlp_metrics_client_key | |
| telemetry.otel_exporter_otlp_metrics_compression | none |
| telemetry.otel_exporter_otlp_metrics_endpoint | http://localhost:4318/v1/metrics |
| telemetry.otel_exporter_otlp_metrics_headers | |
| telemetry.otel_exporter_otlp_metrics_max_tls | |
| telemetry.otel_exporter_otlp_metrics_min_tls | |
| telemetry.otel_exporter_otlp_metrics_protocol | http/protobuf |
| telemetry.otel_exporter_otlp_metrics_timeout | 10000 |
| telemetry.otel_exporter_otlp_traces_certificates | |
| telemetry.otel_exporter_otlp_traces_cipher | |
| telemetry.otel_exporter_otlp_traces_cipher_suite | |
| telemetry.otel_exporter_otlp_traces_client_certificates | |
| telemetry.otel_exporter_otlp_traces_client_key | |
| telemetry.otel_exporter_otlp_traces_compression | none |
| telemetry.otel_exporter_otlp_traces_endpoint | http://localhost:4318/v1/traces |
| telemetry.otel_exporter_otlp_traces_headers | |
| telemetry.otel_exporter_otlp_traces_max_tls | |
| telemetry.otel_exporter_otlp_traces_min_tls | |
| telemetry.otel_exporter_otlp_traces_protocol | http/protobuf |
| telemetry.otel_exporter_otlp_traces_timeout | 10000 |
| telemetry.otel_log_level | info |
| telemetry.otel_resource_attributes | |
| telemetry.query_text_enabled | ON |
| telemetry.trace_enabled | ON |
+----------------------------------------------------------+----------------------------------+请参阅 服务器配置。
MySQL 客户端的遥测插件可以使用命令行开关 --telemetry_client 或从配置选项 telemetry-client=ON |OFF 启用，该选项定义在配置文件的 [mysql] 部分中。