Mackerel supports obtaining and monitoring Amazon Relational Database Service (RDS) metrics in AWS Integration. When integrating with AWS Integration, billable targets are determined using the following conversions.
- For Aurora Serverless v1: 1 Cluster = 1 Micro Host
- For others: 1 Instance = 1 Micro Host
In addition to this, depending on the number of metrics retrieved, you may be charged for exceeding the maximum number of metrics per micro host.
Please refer to the following page for AWS Integration configuration methods and a list of supported AWS services.
AWS Integration
Obtaining metrics
The metrics obtainable with AWS Integration’s RDS support are as follows. For Metric explanations, refer to the AWS help pages (Aurora and otherwise).
For each DB engine, the maximum number of metrics shown in the table below is obtained.
| DB engine | The maximum number of metrics obtainable | |
|---|---|---|
| RDS | PostgreSQL | 38 |
| SQL Server | 34 | |
| MySQL | 33 + (number of replication sources) | |
| Other than those above | 33 | |
| Aurora | MySQL | 63 |
| PostgreSQL | 59 | |
| Aurora Serverless v1 | MySQL | 57 |
| PostgreSQL | 56 |
Common metrics
The following metrics can be obtained in common for RDS, Aurora, and Aurora Serverless v1.
| Graph name | Metric | Metric name in Mackerel | Unit | Statistics |
|---|---|---|---|---|
| CPU | CPUUtilization | rds.cpu.used | percentage | Average |
| CPU Credit | CPUCreditUsage CPUCreditBalance |
rds.cpu_credit.used rds.cpu_credit.balance |
float | Average |
| Database Connections | DatabaseConnections | rds.database_connections.used | float | Average |
| BinLog Disk Usage | BinLogDiskUsage | rds.disk_usage.bin_log | bytes | Average |
| Memory | FreeableMemory SwapUsage |
rds.memory.free rds.memory.swap |
bytes | Average |
| Network Throughput | NetworkReceiveThroughput NetworkTransmitThroughput |
rds.network_throughput.read rds.network_throughput.transmit |
bytes/sec | Average |
| Disk IOPS | ReadIOPS WriteIOPS |
rds.diskiops.read rds.diskiops.write |
iops | Average |
| gp2 Storage Burst Balance | BurstBalance | rds.burst_balance.balance | percentage | Average |
| Maximum Used Transaction IDs | MaximumUsedTransactionIDs *1 | rds.maximum_used_transaction_ids.count | integer | Average |
| Checkpoint Lag | CheckpointLag | rds.checkpoint_lag.lag | seconds | Average |
| Connection Attempts | ConnectionAttempts | rds.connection_attempts.count | integer | Average |
| CPU Surplus Credits | CPUSurplusCreditBalance CPUSurplusCreditsCharged |
rds.cpu_surplus_credits.balance rds.cpu_surplus_credits.charged |
float | Average |
| EBS Balance | EBSByteBalance% EBSIOBalance% |
rds.ebs_balance.byte rds.ebs_balance.io |
percentage | Average |
| Log Volume Disk Queue | DiskQueueDepthLogVolume | rds.log_volume_disk_queue.depth | integer | Average |
| Log Volume Free Storage Space | FreeStorageSpaceLogVolume | rds.log_volume_disk.free | bytes | Average |
| Log Volume IOPS | ReadIOPSLogVolume WriteIOPSLogVolume |
rds.log_volume_iops.read rds.log_volume_iops.write |
iops | Average |
| Log Volume Latency | ReadLatencyLogVolume WriteLatencyLogVolume |
rds.log_volume_latency.read rds.log_volume_latency.write |
seconds | Average |
| Log Volume Throughput | ReadThroughputLogVolume WriteThroughputLogVolume |
rds.log_volume_throughput.read rds.log_volume_throughput.write |
bytes/sec | Average |
*1 Applies to PostgreSQL
RDS metrics
In the case of RDS, the following metrics can be obtained in addition to the above common metrics.
Enter the replication channel name in place of CHANNEL_NAME in the metric name.
| Graph name | Metric | Metric name in Mackerel | Unit | Statistics |
|---|---|---|---|---|
| Disk Queue | DiskQueueDepth | rds.disk_queue.depth | integer | Average |
| Free Storage Space | FreeStorageSpace | rds.disk.free | bytes | Average |
| Replica Lag | ReplicaLag | rds.replica_lag.lag | float | Average |
| Disk Latency | ReadLatency WriteLatency |
rds.latency.read rds.latency.write |
seconds | Average |
| Disk Throughput | ReadThroughput WriteThroughput |
rds.throughput.read rds.throughput.write |
bytes/sec | Average |
| Disk Usage | ReplicationSlotDiskUsage *2 TransactionLogsDiskUsage *2 |
rds.postgres_disk_usage.replication_slot rds.postgres_disk_usage.transaction_logs |
bytes | Average |
| Oldest Replication Slot Lag | OldestReplicationSlotLag *2 | rds.oldest_replication_slot_lag.slot_lag | bytes | Average |
| Transaction Logs Generation | TransactionLogsGeneration *2 | rds.transaction_logs_generation.transaction_log | bytes/sec | Average |
| Failed SQL Server Agent Jobs | FailedSQLServerAgentJobsCount *3 | rds.failed_sql_server_agent_jobs.failed | integer | Average |
| Replication Channel Lag | ReplicationChannelLag *4 | rds.replication_channel_lag.CHANNEL_NAME | seconds | Average |
*2 Applies to PostgreSQL
*3 Applies to Microsoft SQL Server
*4 Applies to MySQL
Aurora metrics
In the case of Aurora, the following metrics can be obtained in addition to the above common metrics.
| Graph name | Metric | Metric name in Mackerel | Unit | Statistics |
|---|---|---|---|---|
| Storage | FreeLocalStorage | rds.aurora.storage.free | bytes | Average |
| BinLog Replica Lag | AuroraBinlogReplicaLag | rds.aurora.binlog_replica_lag.lag | float | Average |
| Replica Lag | AuroraReplicaLag AuroraReplicaLagMaximum AuroraReplicaLagMinimum |
rds.aurora.replica_lag.lag rds.aurora.replica_lag.max_lag rds.aurora.replica_lag.min_lag |
float | Average |
| Engine Uptime | EngineUptime | rds.aurora.engine_uptime.uptime | float | Average |
| Transactions | ActiveTransactions BlockedTransactions |
rds.aurora.transactions.active rds.aurora.transactions.blocked |
float | Average |
| Cache Hit Ratio | BufferCacheHitRatio ResultSetCacheHitRatio |
rds.aurora.hit_ratio.buffer rds.aurora.hit_ratio.result_set |
percentage | Average |
| DML Latency | InsertLatency UpdateLatency DeleteLatency DMLLatency |
rds.aurora.dml_latency.insert rds.aurora.dml_latency.update rds.aurora.dml_latency.delete rds.aurora.dml_latency.dml |
float | Average |
| DML throughput | InsertThroughput UpdateThroughput DeleteThroughput DMLThroughput |
rds.aurora.dml_throughput.insert rds.aurora.dml_throughput.update rds.aurora.dml_throughput.delete rds.aurora.dml_throughput.dml |
float | Average |
| Commit Latency | CommitLatency | rds.aurora.commit_latency.commit | float | Average |
| Commit Throughput | CommitThroughput | rds.aurora.commit_throughput.commit | float | Average |
| Select Latency | SelectLatency | rds.aurora.select_latency.select | float | Average |
| Select Throughput | SelectThroughput | rds.aurora.select_throughput.select | float | Average |
| DDL Latency | DDLLatency | rds.aurora.ddl_latency.ddl | float | Average |
| DDL Throughput | DDLThroughput | rds.aurora.ddl_throughput.ddl | float | Average |
| Queries | Queries | rds.aurora.queries.queries | float | Average |
| Login Failures | LoginFailures | rds.aurora.login_failures.failures | float | Average |
| Deadlocks | Deadlocks | rds.aurora.deadlocks.deadlocks | float | Average |
| Backtrack Window Difference | BacktrackWindowActual *5 | rds.aurora.backtrack_window_difference.minutes | integer | Average |
| Backtrack Window Alert | BacktrackWindowAlert *5 | rds.aurora.backtrack_window_alert.alert | integer | Sum |
| Aurora Volume Bytes Left Total | AuroraVolumeBytesLeftTotal *5 | rds.aurora.aurora_volume_bytes_left_total.total | bytes | Average |
| Aborted Clients | AbortedClients *5 | rds.aurora.aborted_clients.aborted | integer | Sum |
| Row Lock Time | RowLockTime *5 | rds.aurora.row_lock_time.row_lock | float | Average |
| Volume Used | VolumeBytesUsed *6 | rds.aurora.volume_used.bytes | bytes | Average |
*5 Applies to Aurora MySQL
*6 Generated per cluster. Instances of the same cluster will display the same metric.
Aurora Serverless v1 metrics
In the case of Aurora Serverless v1, the following metrics can be obtained in addition to the above Aurora metrics.
| Graph name | Metric | Metric name in Mackerel | Unit | Statistics |
|---|---|---|---|---|
| Serverless Database Capacity | ServerlessDatabaseCapacity | rds.aurora.serverless_database_capacity.capacity | float | Average |
Aurora Serverless v2 metrics
In the case of Aurora Serverless v2, the following metrics can be obtained in addition to the above Aurora metrics.
| Graph name | Metric | Metric name in Mackerel | Unit | Statistics |
|---|---|---|---|---|
| Serverless Database Capacity | ServerlessDatabaseCapacity | rds.aurora.serverless_database_capacity.capacity | float | Average |
| ACU Utilization | ACUUtilization | rds.aurora.acu_utilization.utilization | percentage | Average |
| Temp Storage IOPS | TempStorageIOPS | rds.aurora.temp_storage_iops.iops | iops | Average |
| Temp Storage Throughput | TempStorageThroughput | rds.aurora.temp_storage_throughput.throughput | bytes/sec | Average |
Precautions
Among the graphs/metrics obtainable with AWS Integration, metrics included in the following graphs are usually obtained in 5 minute intervals.
- CPU Credit
- CPU Surplus Credits
- gp2 Storage Burst Balance
- Volume Used
This is specified by the AWS CloudWatch API.
