[Yandex Cloud documentation](../../index.md) > [Monium](../index.md) > [Metrics](../metrics/overview.md) > [Metric reference](index.md) > Managed Service for MySQL®
# Yandex Managed Service for MySQL® metrics
This section describes [Managed Service for MySQL®](../../managed-mysql/index.md) metrics delivered to Monium.Metrics.
The `name` label contains the metric name.
Labels shared by all Managed Service for MySQL® metrics:
Label | Value
----|----
dc | [Availability zone](../../overview/concepts/geo-scope.md)
host | Host FQDN
node | Host type: `primary` or `replica`
resource_id | Cluster ID
resource_type | Resource type: `cluster`
service | Service ID: `managed-mysql`
shard | Shard ID
subcluster_name | Subcluster name
## CPU metrics {#managed-mysql-cpu-metrics}
CPU core workload.
The consumption type goes into the `systag` label.
| Name
Type, units | Description |
| ----- | ----- |
| `cpu.guest`
`DGAUGE`, % | CPU core usage, `guest` usage type |
| `cpu.guest_nice`
`DGAUGE`, % | CPU core usage, `guest_nice` usage type |
| `cpu.idle`
`DGAUGE`, % | CPU core usage, `idle` usage type |
| `cpu.iowait`
`DGAUGE`, % | CPU core usage, `iowait` usage type |
| `cpu.irq`
`DGAUGE`, % | CPU core usage, `irq` usage type |
| `cpu.nice`
`DGAUGE`, % | CPU core usage, `nice` usage type |
| `cpu.softirq`
`DGAUGE`, % | CPU core usage, `softirq` usage type |
| `cpu.steal`
`DGAUGE`, % | CPU core usage, `steal` usage type |
| `cpu.system`
`DGAUGE`, % | CPU core usage, `system` usage type |
| `cpu.usage_idle`
`DGAUGE`, % | CPU core usage, `idle` usage type |
| `cpu.user`
`DGAUGE`, % | CPU core usage, `user` usage type |
| `load.avg_15min`
`DGAUGE`, % | Average load over 15 minutes |
| `load.avg_1min`
`DGAUGE`, % | Average load over one minute |
| `load.avg_5min`
`DGAUGE`, % | Average load over five minutes |
## Disk metrics {#managed-mysql-disk-metrics}
| Name
Type, units | Description |
| ----- | ----- |
| `disk.free`
`DGAUGE`, bytes | Free space |
| `disk.free_bytes`
`DGAUGE`, bytes | Free space |
| `disk.free_inodes`
`DGAUGE`, count | Free inodes |
| `disk.inodes_free`
`DGAUGE`, count | Free inodes |
| `disk.inodes_total`
`DGAUGE`, count | Available inodes |
| `disk.inodes_used`
`DGAUGE`, count | Used inodes |
| `disk.inodes_used_percent`
`DGAUGE`, % | Percentage of used inodes |
| `disk.total`
`DGAUGE`, bytes | Available space |
| `disk.total_bytes`
`DGAUGE`, bytes | Available space |
| `disk.total_inodes`
`DGAUGE`, count | Available inodes |
| `disk.used`
`DGAUGE`, bytes | Used space |
| `disk.used_bytes`
`DGAUGE`, bytes | Used space |
| `disk.used_inodes`
`DGAUGE`, count | Used inodes |
| `disk.used_percent`
`DGAUGE`, % | Percentage of used space |
| `disk.used_percent_inodes`
`DGAUGE`, % | Percentage of used inodes |
## Disk I/O metrics {#managed-mysql-diskio-metrics}
| Name
Type, units | Description |
| ----- | ----- |
| `io.avg_read_time`
`DGAUGE`, milliseconds | Average disk read time |
| `io.avg_write_time`
`DGAUGE`, milliseconds | Average disk write time |
| `io.disk*.avg_read_time`
`DGAUGE`, milliseconds | Average read time for a given disk |
| `io.disk*.avg_write_time`
`DGAUGE`, milliseconds | Average write time for a given disk |
| `io.disk*.read_bytes`
`DGAUGE`, bytes per second | Read speed for a given disk |
| `io.disk*.read_count`
`DGAUGE`, operations per second | Number of reads per second for a given disk |
| `io.disk*.read_merged_count`
`DGAUGE`, operations per second | Number of merged read operations per second for a given disk |
| `io.disk*.utilization`
`DGAUGE`, % | Utilization of a given disk; disabled for network drives. |
| `io.disk*.write_bytes`
`DGAUGE`, bytes per second | Write speed for a given disk |
| `io.disk*.write_count`
`DGAUGE`, operations per second | Number of writes per second for a given disk |
| `io.disk*.write_merged_count`
`DGAUGE`, operations per second | Number of merged write operations per second for a given disk |
| `io.read_bytes`
`DGAUGE`, bytes per second | Disk read rate |
| `io.read_count`
`DGAUGE`, operations per second | Number of read operations per second |
| `io.read_merged_count`
`DGAUGE`, operations per second | Number of merged read operations per second |
| `io.utilization`
`DGAUGE`, % | Disk utilization disabled for network drives. |
| `io.write_bytes`
`DGAUGE`, bytes per second | Disk write speed |
| `io.write_count`
`DGAUGE`, operations per second | Number of writes per second |
| `io.write_merged_count`
`DGAUGE`, operations per second | Number of merged write operations per second |
| `monitoring_disk.io_quota_utilization_percentage`
`DGAUGE`, % | Average percentage of disk quota usage |
| `monitoring_disk.io_quota_utilization_percentage_burst`
`DGAUGE`, % | Maximum percentage of disk quota usage |
| `monitoring_disk.read_bytes`
`DGAUGE`, bytes per second | Average number of bytes read from disk. |
| `monitoring_disk.read_bytes_burst`
`DGAUGE`, bytes per second | Maximum number of bytes read from disk |
| `monitoring_disk.read_latency`
`DGAUGE`, milliseconds | Distribution histogram for disk read request latency |
| `monitoring_disk.read_ops`
`DGAUGE`, operations per second | Average number of disk reads |
| `monitoring_disk.read_ops_burst`
`DGAUGE`, operations per second | Maximum number of disk reads |
| `monitoring_disk.read_throttler_delay`
`DGAUGE`, milliseconds | Histogram of read latency due to exceeded disk quota |
| `monitoring_disk.write_bytes`
`DGAUGE`, bytes per second | Average number of bytes written to disk. |
| `monitoring_disk.write_bytes_burst`
`DGAUGE`, bytes per second | Maximum number of bytes written to disk |
| `monitoring_disk.write_latency`
`DGAUGE`, milliseconds | Distribution histogram for disk write request latency |
| `monitoring_disk.write_ops`
`DGAUGE`, operations per second | Average number of disk write operations |
| `monitoring_disk.write_ops_burst`
`DGAUGE`, operations per second | Maximum number of disk write operations |
| `monitoring_disk.write_throttler_delay`
`DGAUGE`, milliseconds | Histogram of write latency due to exceeded disk quota |
## RAM metrics {#managed-mysql-ram-metrics}
The consumption type goes into the `systag` label.
| Name
Type, units | Description |
| ----- | ----- |
| `mem.active_bytes`
`DGAUGE`, bytes | Active resident memory (frequently accessed and released when absolutely necessary) |
| `mem.available_bytes`
`DGAUGE`, bytes | RAM usage, `available` usage type |
| `mem.available_percent_bytes`
`DGAUGE`, % | Percentage of RAM usage, `available` usage type |
| `mem.buffers_bytes`
`DGAUGE`, bytes | RAM usage, `buffers` usage type |
| `mem.cached_bytes`
`DGAUGE`, bytes | RAM usage, `cached` usage type |
| `mem.commit_limit_bytes`
`DGAUGE`, bytes | RAM usage, `commit_limit` usage type |
| `mem.committed_as_bytes`
`DGAUGE`, bytes | RAM usage, `committed_as` usage type |
| `mem.dirty_bytes`
`DGAUGE`, bytes | RAM usage, `dirty` usage type |
| `mem.free_bytes`
`DGAUGE`, bytes | Amount of free RAM available, excluding `mem.buffers_bytes` and `mem.cached_bytes`. |
| `mem.high_free_bytes`
`DGAUGE`, bytes | RAM usage, `high_free` usage type |
| `mem.high_total_bytes`
`DGAUGE`, bytes | RAM usage, `high_total` usage type |
| `mem.huge_pages_free_bytes`
`DGAUGE`, bytes | RAM usage, `huge_pages_free` usage type |
| `mem.huge_page_size_bytes`
`DGAUGE`, bytes | RAM usage, `huge_page_size` usage type |
| `mem.huge_pages_total_bytes`
`DGAUGE`, bytes | RAM usage, `huge_pages_total` usage type |
| `mem.inactive_bytes`
`DGAUGE`, bytes | RAM usage, `inactive` usage type |
| `mem.low_free_bytes`
`DGAUGE`, bytes | RAM usage, `low_free` usage type |
| `mem.low_total_bytes`
`DGAUGE`, bytes | RAM usage, `low_total` usage type |
| `mem.mapped_bytes`
`DGAUGE`, bytes | RAM usage, `mapped` usage type |
| `mem.page_tables_bytes`
`DGAUGE`, bytes | RAM usage, `page_tables` usage type |
| `mem.shared_bytes`
`DGAUGE`, bytes | RAM usage, `shared` usage type |
| `mem.slab_bytes`
`DGAUGE`, bytes | RAM usage, `slab` usage type |
| `mem.sreclaimable_bytes`
`DGAUGE`, bytes | RAM usage, `sreclaimable` usage type |
| `mem.sunreclaim_bytes`
`DGAUGE`, bytes | RAM usage, `sunreclaim` usage type |
| `mem.swap_cached_bytes`
`DGAUGE`, bytes | RAM usage, `swap_cached` usage type |
| `mem.swap_free_bytes`
`DGAUGE`, bytes | RAM usage, `swap_free` usage type |
| `mem.swap_total_bytes`
`DGAUGE`, bytes | RAM usage, `swap_total` usage type |
| `mem.total`
`DGAUGE`, bytes | RAM usage, `total` usage type |
| `mem.total_bytes`
`DGAUGE`, bytes | RAM usage, `total` usage type |
| `mem.used`
`DGAUGE`, bytes | RAM usage, `used` usage type |
| `mem.used_bytes`
`DGAUGE`, bytes | Amount of RAM currently used by running processes |
| `mem.used_percent_bytes`
`DGAUGE`, % | Percentage of used RAM |
| `mem.vmalloc_chunk_bytes`
`DGAUGE`, bytes | RAM usage, `vmalloc_chunk` usage type |
| `mem.vmalloc_total_bytes`
`DGAUGE`, bytes | RAM usage, `vmalloc_total` usage type |
| `mem.vmalloc_used_bytes`
`DGAUGE`, bytes | RAM usage, `vmalloc_used` usage type |
| `mem.write_back_bytes`
`DGAUGE`, bytes | RAM usage, `write_back` usage type |
| `mem.write_back_tmp_bytes`
`DGAUGE`, bytes | RAM usage, `write_back_tmp` usage type |
## Network metrics {#managed-mysql-net-metrics}
| Name
Type, units | Description |
| ----- | ----- |
| `dmesg_events.mysql.oom`
`DGAUGE`, events | Number of MySQL® out-of-memory events |
| `dmesg_events.system.oom`
`DGAUGE`, events | Number of system out-of-memory events |
| `net.bytes_recv`
`DGAUGE`, bytes per second | Network data receive rate |
| `net.bytes_sent`
`DGAUGE`, bytes per second | Network data transmit rate |
| `net.dropin`
`DGAUGE`, count | Dropped receive packets |
| `net.dropout`
`DGAUGE`, count | Dropped transmit packets |
| `net.errin`
`DGAUGE`, count | Receive error count |
| `net.errout`
`DGAUGE`, count | Transmit error count |
| `net.icmpmsg_intype8`
`DGAUGE`, messages | Number of ICMP type 8 (echo request) messages received |
| `net.icmpmsg_outtype0`
`DGAUGE`, messages | Number of ICMP type 0 (echo reply) messages sent |
| `net.icmp_outratelimitglobal`
`DGAUGE`, messages | Number of ICMP messages throttled by global rate limits |
| `net.icmp_outratelimithost`
`DGAUGE`, messages | Number of ICMP messages throttled by host-specific rate limits |
| `net.ip_outtransmits`
`DGAUGE`, packets | Number of successfully sent IP packets |
| `net.packets_recv`
`DGAUGE`, packets per second | Network packet receive rate |
| `net.packets_sent`
`DGAUGE`, packets per second | Network packet transmit rate |
| `net.speed`
`DGAUGE`, bits per second | Maximum network data transfer rate for this interface |
| `net.udplite_memerrors`
`DGAUGE`, errors | Number of UDP-Lite out-of-memory errors |
| `net.udp_memerrors`
`DGAUGE`, errors | Number of UDP out-of-memory errors |
## Service metrics {#managed-mysql-metrics}
| Name
Type, units | Description |
| ----- | ----- |
| `dbaas_conf.cpu.fraction`
`DGAUGE`, fractions | Fraction of available CPU resources allocated by the service |
| `dbaas_conf.cpu.guarantee`
`DGAUGE`, fractions | Guaranteed fraction of CPU resources allocated by the service |
| `dbaas_conf.cpu.limit`
`DGAUGE`, fractions | Maximum allowed fraction of CPU resource usage |
| `dbaas_conf.hosts.ha`
`DGAUGE`, hosts | Number of hosts set up for high availability |
| `dbaas_conf.hosts.subcluster.source.total`
`DGAUGE`, hosts | Number of hosts in the source subcluster |
| `dbaas_conf.hosts.subcluster.target.total`
`DGAUGE`, hosts | Number of hosts in the target subcluster |
| `dbaas_conf.hosts.total`
`DGAUGE`, hosts | Total hosts used by the service |
| `disk.mysql.binlogs_bytes`
`DGAUGE`, bytes | Amount of space used by MySQL® service logs |
| `disk.mysql.data_bytes`
`DGAUGE`, bytes | Amount of space used by data |
| `disk.mysql.default_tablespace_bytes`
`DGAUGE`, bytes | Amount of space used by data in the default tablespace |
| `disk.mysql.innodb_logs_bytes`
`DGAUGE`, bytes | Amount of space used by InnoDB logs |
| `disk.mysql.relaylogs_bytes`
`DGAUGE`, bytes | Amount of space used by MySQL® service logs |
| `disk.mysql.temp_tablespace_bytes`
`DGAUGE`, bytes | Amount of space used by data in the temporary tablespace |
| `disk.mysql.undo_tablespace_bytes`
`DGAUGE`, bytes | Space used by data in the [InnoDB undo tablespace](https://dev.mysql.com/doc/refman/8.0/en/innodb-undo-tablespaces.html) |
| `mysql.fileio.read_bytes`
`DGAUGE`, bytes per second | Data read rate.
Additional label: `filetype`. |
| `mysql.fileio.reads`
`DGAUGE`, operations per second | Average file reads per second.
Additional label: `filetype`. |
| `mysql.fileio.write_bytes`
`DGAUGE`, bytes per second | Data write rate.
Additional label: `filetype`. |
| `mysql.fileio.writes`
`DGAUGE`, operations per second | Average file writes per second.
Additional label: `filetype`. |
| `mysql.handler`
`DGAUGE`, count | Number of handlers for various operations. For more information, see [this MySQL® guide](https://dev.mysql.com/doc/refman/8.0/en/server-status-variables.html).
Additional label: `handler`. |
| `mysql.session`
`DGAUGE`, count | Number of sessions at a certain stage.
Additional label: `stage`. |
| `mysql_Aborted_connects_rate`
`DGAUGE`, connections per second | Rate of failed database connection attempts |
| `mysql_Binlog_cache_disk_use_rate`
`DGAUGE`, transactions per second | Rate of transactions requiring temporary disk file writes due to binlog cache overflowing |
| `mysql_Binlog_cache_use_rate`
`DGAUGE`, transactions per second | Rate of transactions using the binlog cache |
| `mysql_Connections_rate`
`DGAUGE`, connections per second | Rate of database connection attempts (both successful and failed) |
| `mysql_connections.system`
`DGAUGE`, connections | Number of system connections |
| `mysql_connections.user`
`DGAUGE`, connections | Number of user connections |
| `mysql_Created_tmp_disk_tables_rate`
`DGAUGE`, tables per second | Rate of temporary tables created on the disk during DB query processing |
| `mysql_Created_tmp_files_rate`
`DGAUGE`, files per second | Rate of temporary DB file creation |
| `mysql_Created_tmp_tables_rate`
`DGAUGE`, tables per second | Rate of temporary tables created during DB query processing |
| `mysql_Innodb_buffer_pool_pages_data`
`DGAUGE`, count | Number of pages with data in the InnoDB buffer, including `dirty` and `clean` |
| `mysql_Innodb_buffer_pool_pages_dirty`
`DGAUGE`, count | Number of `dirty` pages in the InnoDB buffer |
| `mysql_Innodb_buffer_pool_pages_free`
`DGAUGE`, count | Number of free pages in the InnoDB buffer |
| `mysql_Innodb_buffer_pool_pages_misc`
`DGAUGE`, count | Number of service pages in the InnoDB buffer |
| `mysql_Innodb_buffer_pool_pages_total`
`DGAUGE`, count | Total pages in the InnoDB buffer |
| `mysql_Innodb_buffer_pool_read_requests_rate`
`DGAUGE`, operations per second | Rate of InnoDB reads |
| `mysql_Innodb_buffer_pool_reads_rate`
`DGAUGE`, operations per second | Rate of InnoDB reads requiring InnoDB to access the disk |
| `mysql_Innodb_checkpoint_age`
`DGAUGE`, bytes | Size of InnoDB in-memory data before disk flush |
| `mysql_Innodb_checkpoint_max_age`
`DGAUGE`, bytes | Maximum size of InnoDB in-memory data before disk flush |
| `mysql_Innodb_data_fsyncs_rate`
`DGAUGE`, operations per second | Rate of _fsync()_ operations when flushing data to the disk in InnoDB |
| `mysql_Innodb_data_reads_rate`
`DGAUGE`, operations per second | InnoDB disk read rate |
| `mysql_Innodb_data_writes_rate`
`DGAUGE`, operations per second | InnoDB write rate |
| `mysql_Innodb_page_size`
`DGAUGE`, bytes | Page size in InnoDB (defaults to 16 KB) |
| `mysql_Innodb_row_lock_current_waits`
`DGAUGE`, count | Number of row locks in InnoDB |
| `mysql_Innodb_row_lock_time_rate`
`DGAUGE`, milliseconds | Total InnoDB row lock wait time |
| `mysql_Innodb_row_lock_waits_rate`
`DGAUGE`, operations per second | Rate of InnoDB operations waiting for row locks |
| `mysql_Innodb_rows_deleted_rate`
`DGAUGE`, rows per second | InnoDB row deletion rate |
| `mysql_Innodb_rows_inserted_rate`
`DGAUGE`, rows per second | InnoDB row insertion rate |
| `mysql_Innodb_rows_read_rate`
`DGAUGE`, rows per second | Rate of row reads from InnoDB tables |
| `mysql_Innodb_rows_updated_rate`
`DGAUGE`, rows per second | InnoDB row update rate |
| `mysql_Open_table_definitions`
`DGAUGE`, count | Number of cached table definitions |
| `mysql_Open_tables`
`DGAUGE`, count | Number of open tables |
| `mysql_Opened_table_definitions_rate`
`DGAUGE`, tables per second | Number of table definitions cached per unit of time |
| `mysql_Opened_tables_rate`
`DGAUGE`, tables per second | Number of tables opened per unit of time |
| `mysql_Prepared_stmt_count`
`DGAUGE`, count | Number of prepared statements |
| `mysql_Queries_rate`
`DGAUGE`, queries per second | Query execution rate, including user queries and stored procedures |
| `mysql_Questions_rate`
`DGAUGE`, queries per second | User query execution rate |
| `mysql_Rpl_semi_sync_master_clients`
`DGAUGE`, count | Number of semi-sync replicas |
| `mysql_Rpl_semi_sync_master_tx_avg_wait_time`
`DGAUGE`, microseconds | Average wait time for a transaction on the replication source |
| `mysql_Rpl_semi_sync_master_tx_wait_time_rate`
`DGAUGE`, microseconds | Total wait time for a transaction on the replication source, per unit of time |
| `mysql_Rpl_semi_sync_master_wait_sessions`
`DGAUGE`, count | Number of sessions waiting for a response from replicas |
| `mysql_Select_full_join_rate`
`DGAUGE`, queries per second | Rate of joins using table scans rather than indexes |
| `mysql_Select_full_range_join_rate`
`DGAUGE`, queries per second | Number of joins searching by range in the reference table |
| `mysql_Slow_queries_rate`
`DGAUGE`, queries per second | Number of slow queries running longer than the `long_query_time` per unit of time |
| `mysql_Sort_range_rate`
`DGAUGE`, queries per second | Number of range sorts per unit of time |
| `mysql_Sort_rows_rate`
`DGAUGE`, queries per second | Number of rows sorted per unit of time |
| `mysql_Sort_scan_rate`
`DGAUGE`, queries per second | Number of sorts using table scans per unit of time |
| `mysql_Table_locks_immediate`
`DGAUGE`, count | Number of immediate table locks |
| `mysql_Table_locks_waited`
`DGAUGE`, count | Number of table locks that had to wait |
| `mysql_Table_open_cache_hits_rate`
`DGAUGE`, operations per second | Open table cache hit rate |
| `mysql_Table_open_cache_misses_rate`
`DGAUGE`, operations per second | Number of misses for open table cache lookups per unit of time |
| `mysql_Threads_cached`
`DGAUGE`, count | Number of cached threads |
| `mysql_Threads_connected`
`DGAUGE`, count | Number of threads handling open DB connections |
| `mysql_Threads_created_rate`
`DGAUGE`, threads per second | Thread creation rate |
| `mysql_Threads_running`
`DGAUGE`, count | Number of currently running threads |
| `mysql_Uptime`
`DGAUGE`, seconds | Server uptime |
| `mysql_config_innodb_buffer_pool_size`
`DGAUGE`, bytes | InnoDB buffer pool size |
| `mysql_config_innodb_log_file_size`
`DGAUGE`, bytes | Log file size in the log group |
| `mysql_config_max_connections`
`DGAUGE`, count | Maximum number of concurrent connections |
| `mysql_config_table_open_cache`
`DGAUGE`, count | Number of open tables across all threads |
| `mysql_config_thread_cache_size`
`DGAUGE`, number | Number of threads to cache for reuse |
| `mysql_is_alive`
`DGAUGE`, 0/1 | Host health indicator.
It can be either `1` if a DB host is healthy or `0` if not. |
| `mysql_is_primary`
`DGAUGE`, 0/1 | Master host indicator.
`1` if the database host is a master, `0` if not. |
| `mysql_is_replica`
`DGAUGE`, 0/1 | Replica host indicator.
`1` if the database host is a replica, `0` if not. |
| `mysql_latency_query_0.5`
`DGAUGE`, milliseconds | Query execution time, median value |
| `mysql_latency_query_0.75`
`DGAUGE`, milliseconds | Query execution time, 75th percentile |
| `mysql_latency_query_0.90`
`DGAUGE`, milliseconds | Query execution time, 90th percentile |
| `mysql_latency_query_0.95`
`DGAUGE`, milliseconds | Query execution time, 95th percentile |
| `mysql_latency_query_0.99`
`DGAUGE`, milliseconds | Query execution time, 99th percentile |
| `mysql_latency_query_avg`
`DGAUGE`, milliseconds | Average query execution time |
| `mysql_latency_query_oldest`
`DGAUGE`, milliseconds | Execution time of the oldest query |
| `mysql_latency_trx_0.5`
`DGAUGE`, milliseconds | Transaction execution time, median value |
| `mysql_latency_trx_0.75`
`DGAUGE`, milliseconds | Transaction execution time, 75th percentile |
| `mysql_latency_trx_0.90`
`DGAUGE`, milliseconds | Transaction execution time, 90th percentile |
| `mysql_latency_trx_0.95`
`DGAUGE`, milliseconds | Transaction execution time, 95th percentile |
| `mysql_latency_trx_0.99`
`DGAUGE`, milliseconds | Transaction execution time, 99th percentile |
| `mysql_latency_trx_avg`
`DGAUGE`, milliseconds | Average transaction execution time |
| `mysql_latency_trx_oldest`
`DGAUGE`, milliseconds | Execution time of the oldest transaction |
| `mysql_replication_lag`
`DGAUGE`, seconds | Replica's lag behind the master |
| `mysql_replication.io_thread_running`
`DGAUGE`, 0/1 | State of MySQL® replication I/O thread.It can be either `1` if the thread is running or `0` if it is stopped. |
| `mysql_replication.sql_thread_running`
`DGAUGE`, 0/1 | State of MySQL® replication SQL thread.It can be either `1` if the thread is running or `0` if it is stopped. |
| `mysql_role`
`DGAUGE`, 1/2 | Current MySQL® server role in the replication.
It can be either `2` if the server is a replica (secondary server) or `1` if it is a master (primary server). |
| `mysql_writable`
`DGAUGE`, 0/1 | Server write access.
It can be either `1` if a server is available for writes or `0` if it is not. |
| `oom_count`
`DGAUGE`, count | Number of out-of-memory events |
## Other metrics {#managed-mysql-other-metrics}
| Name
Type, units | Description |
| ----- | ----- |
| `can_read`
`DGAUGE`, 0/1 | Host read access indicator.
`1` if the host service is available for reads, `0` if not. |
| `can_write`
`DGAUGE`, 0/1 | Host write access indicator.
`1` if the host service is available for writes, `0` if not. |
| `core_dump.count`
`DGAUGE`, count | Number of core dumps |
| `n_unique_users`
`DGAUGE`, users | Number of unique users or accounts engaging with the system |