Prometheus exporter for MySQL server metrics. Supported MySQL versions: 5.1 and up. NOTE: Not all collection methods are support on MySQL < 5.6
make
export DATA_SOURCE_NAME="login:password@(hostname:port)/dbname"
./mysqld_exporter <flags>
| Name | Description |
|---|---|
| collect.auto_increment.columns | Collect auto_increment columns and max values from information_schema. |
| collect.binlog_size | Compute the size of all binlog files combined (as specified by "SHOW MASTER LOGS") |
| collect.info_schema.userstats | If running with userstat=1, set to true to collect user statistics. |
| collect.perf_schema.eventsstatements | Collect time metrics from performance_schema.events_statements_summary_by_digest. |
| collect.perf_schema.eventsstatements.limit | Limit the number of events statements digests by response time. (default: 250) |
| collect.perf_schema.eventsstatements.digest_text_limit | Maximum length of the normalized statement text. (default: 120) |
| collect.perf_schema.indexiowaits | Collect metrics from performance_schema.table_io_waits_summary_by_index_usage. |
| collect.perf_schema.indexiowaitstime | Collect time metrics from performance_schema.table_io_waits_summary_by_index_usage. |
| collect.perf_schema.tableiowaits | Collect metrics from performance_schema.table_io_waits_summary_by_table. |
| collect.perf_schema.tableiowaitstime | Collect time metrics from performance_schema.table_io_waits_summary_by_table. |
| collect.perf_schema.tablelocks | Collect metrics from performance_schema.table_lock_waits_summary_by_table. |
| collect.perf_schema.tablelockstime | Collect time metrics from performance_schema.events_statements_summary_by_digest. |
| log.level | Logging verbosity (default: info) |
| web.listen-address | Address to listen on for web interface and telemetry. |
| web.telemetry-path | Path under which to expose metrics. |
The MySQL server's data source name
must be set via the DATA_SOURCE_NAME environment variable.
The format of this variable is described at https://github.com/go-sql-driver/mysql#dsn-data-source-name.
You can deploy this exporter using the prom/mysqld-exporter Docker image.
For example:
docker pull prom/mysqld-exporter
docker run -d -p 9104:9104 --link=my_mysql_container:bdd \
-e DATA_SOURCE_NAME="user:password@(bdd:3306)/database" prom/mysqld-exporterCertain queries to events_statements metrics will contain a query digest
label in the result vector. The events_statements_digest_text metrics
stores a mapping of those digests to their actual query template (digest_text).
This metric can be used to join in the digest text to a query result so it can
be interpreted in a more meaningful way.
Suppose a query is:
sum(rate(mysql_perf_schema_events_statements_total[5m])) by (digest)
The result vector contains the rate of events per digest, which is of little meaning without knowing the actual query behind the digest.
Extending the query adds a digest_text label to the result vector showing us
exactly that information:
(sum(rate(mysql_perf_schema_events_statements_total[5m])) by (digest)) * on(digest) group_right(schema, digest_text) mysql_perf_schema_events_statements_digest_text
This extension (* on(digest)...) is generally applicable to all similar
queries.