Caution
Grafana Alloy is the new name for our distribution of the OTel collector. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. Read more about why we recommend migrating to Grafana Alloy.
Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
mysqld_exporter_config
The mysqld_exporter_config
block configures the mysqld_exporter
integration,
which is an embedded version of
mysqld_exporter
and allows for collection metrics from MySQL servers.
Note that currently, an Agent can only collect metrics from a single MySQL
server. If you want to collect metrics from multiple servers, run multiple
Agents and add labels using relabel_configs
to differentiate between the MySQL
servers:
mysqld_exporter:
enabled: true
data_source_name: root@(server-a:3306)/
relabel_configs:
- source_labels: [__address__]
target_label: instance
replacement: server-a
We strongly recommend that you configure a separate user for the Agent, and give it only the strictly mandatory security privileges necessary for monitoring your node, as per the official documentation.
Full reference of options:
# Enables the mysqld_exporter integration, allowing the Agent to collect
# metrics from a MySQL server.
[enabled: <boolean> | default = false]
# Sets an explicit value for the instance label when the integration is
# self-scraped. Overrides inferred values.
#
# The default value for this integration is a truncated version of the
# connection DSN, containing only the server and db name. (Credentials
# are not included.)
[instance: <string>]
# Automatically collect metrics from this integration. If disabled,
# the mysqld_exporter integration will be run but not scraped and thus not
# remote-written. Metrics for the integration will be exposed at
# /integrations/mysqld_exporter/metrics and can be scraped by an external
# process.
[scrape_integration: <boolean> | default = <integrations_config.scrape_integrations>]
# How often should the metrics be collected? Defaults to
# prometheus.global.scrape_interval.
[scrape_interval: <duration> | default = <global_config.scrape_interval>]
# The timeout before considering the scrape a failure. Defaults to
# prometheus.global.scrape_timeout.
[scrape_timeout: <duration> | default = <global_config.scrape_timeout>]
# Allows for relabeling labels on the target.
relabel_configs:
[- <relabel_config> ... ]
# Relabel metrics coming from the integration, allowing to drop series
# from the integration that you don't care about.
metric_relabel_configs:
[ - <relabel_config> ... ]
# How frequent to truncate the WAL for this integration.
[wal_truncate_frequency: <duration> | default = "60m"]
# Data Source Name specifies the MySQL server to connect to. This is REQUIRED
# but may also be specified by the MYSQLD_EXPORTER_DATA_SOURCE_NAME
# environment variable. If neither are set, the integration will fail to
# start.
#
# The format of this is specified here: https://github.com/go-sql-driver/mysql#dsn-data-source-name
#
# A working example value for a server with no required password
# authentication is: "root@(localhost:3306)/"
data_source_name: <string>
# A list of collector names to enable on top of the default set.
enable_collectors:
[ - <string> ]
# A list of collector names to disable from the default set.
disable_collectors:
[ - <string> ]
# A list of collectors to run. Fully overrides the default set.
set_collectors:
[ - <string> ]
# Set a lock_wait_timeout on the connection to avoid long metadata locking.
[lock_wait_timeout: <int> | default = 2]
# Add a low_slow_filter to avoid slow query logging of scrapes. NOT supported
# by Oracle MySQL.
[log_slow_filter: <bool> | default = false]
## Collector-specific options
# Minimum time a thread must be in each state to be counted.
[info_schema_processlist_min_time: <int> | default = 0]
# Enable collecting the number of processes by user.
[info_schema_processlist_processes_by_user: <bool> | default = true]
# Enable collecting the number of processes by host.
[info_schema_processlist_processes_by_host: <bool> | default = true]
# The list of databases to collect table stats for. * for all
[info_schema_tables_databases: <string> | default = "*"]
# Limit the number of events statements digests by response time.
[perf_schema_eventsstatements_limit: <int> | default = 250]
# Limit how old the 'last_seen' events statements can be, in seconds.
[perf_schema_eventsstatements_time_limit: <int> | default = 86400]
# Maximum length of the normalized statement text.
[perf_schema_eventsstatements_digtext_text_limit: <int> | default = 120]
# Regex file_name filter for performance_schema.file_summary_by_instance
[perf_schema_file_instances_filter: <string> | default = ".*"]
# Remove path prefix in performance_schema.file_summary_by_instance
[perf_schema_file_instances_remove_prefix: <string> | default = "/var/lib/mysql"]
# Database from where to collect heartbeat data.
[heartbeat_database: <string> | default = "heartbeat"]
# Table from where to collect heartbeat data.
[heartbeat_table: <string> | default = "heartbeat"]
# Use UTC for timestamps of the current server (`pt-heartbeat` is called with `--utc`)
[heartbeat_utc: <bool> | default = false]
# Enable collecting user privileges from mysql.user
[mysql_user_privileges: <bool> | default = false]
The full list of collectors that are supported for mysqld_exporter
is:
Name | Description | Enabled by default |
---|---|---|
auto_increment.columns | Collect auto_increment columns and max values from information_schema | no |
binlog_size | Collect the current size of all registered binlog files | no |
engine_innodb_status | Collect from SHOW ENGINE INNODB STATUS | no |
engine_tokudb_status | Collect from SHOW ENGINE TOKUDB STATUS | no |
global_status | Collect from SHOW GLOBAL STATUS | yes |
global_variables | Collect from SHOW GLOBAL VARIABLES | yes |
heartbeat | Collect from heartbeat | no |
info_schema.clientstats | If running with userstat=1, enable to collect client statistics | no |
info_schema.innodb_cmpmem | Collect metrics from information_schema.innodb_cmpmem | yes |
info_schema.innodb_metrics | Collect metrics from information_schema.innodb_metrics | yes |
info_schema.innodb_tablespaces | Collect metrics from information_schema.innodb_sys_tablespaces | no |
info_schema.processlist | Collect current thread state counts from the information_schema.processlist | no |
info_schema.query_response_time | Collect query response time distribution if query_response_time_stats is ON | yes |
info_schema.replica_host | Collect metrics from information_schema.replica_host_status | no |
info_schema.schemastats | If running with userstat=1, enable to collect schema statistics | no |
info_schema.tables | Collect metrics from information_schema.tables | no |
info_schema.tablestats | If running with userstat=1, enable to collect table statistics | no |
info_schema.userstats | If running with userstat=1, enable to collect user statistics | no |
mysql.user | Collect data from mysql.user | no |
perf_schema.eventsstatements | Collect metrics from performance_schema.events_statements_summary_by_digest | no |
perf_schema.eventsstatementssum | Collect metrics of grand sums from performance_schema.events_statements_summary_by_digest | no |
perf_schema.eventswaits | Collect metrics from performance_schema.events_waits_summary_global_by_event_name | no |
perf_schema.file_events | Collect metrics from performance_schema.file_summary_by_event_name | no |
perf_schema.file_instances | Collect metrics from performance_schema.file_summary_by_instance | no |
perf_schema.indexiowaits | Collect metrics from performance_schema.table_io_waits_summary_by_index_usage | no |
perf_schema.replication_applier_status_by_worker | Collect metrics from performance_schema.replication_applier_status_by_worker | no |
perf_schema.replication_group_member_stats | Collect metrics from performance_schema.replication_group_member_stats | no |
perf_schema.replication_group_members | Collect metrics from performance_schema.replication_group_members | no |
perf_schema.tableiowaits | Collect metrics from performance_schema.table_io_waits_summary_by_table | no |
perf_schema.tablelocks | Collect metrics from performance_schema.table_lock_waits_summary_by_table | no |
slave_hosts | Scrape information from ‘SHOW SLAVE HOSTS’ | no |
slave_status | Scrape information from SHOW SLAVE STATUS | yes |