This topic describes how to monitor the performance of hosts in an analytical instance by using OceanBase Cloud.
Procedure
Log in to the OceanBase Cloud console.
In the left-side navigation pane, click Instances.
On the Instances page, click the name of the target instance to navigate to the Overview page of the instance.
In the left-side navigation pane of the Overview page of the instance, click Metrics.
On the Metrics page, click the Hosts tab.
By default, this tab shows the monitoring data of all nodes in the instance in the last hour.
- You can select a node from the Node drop-down list to view its monitoring data. If you select multiple nodes, you can click node names in a chart to filter the data to view.
- You can also specify a time period to filter the data to view.
The following table describes the performance metrics.
* System resources
| Metric | Metric Name | Unit | Description |
|-----------|------------|-----|-------------|
| System Load | load1 | - | The average CPU load in the last 1 minute. |
| CPU Usage | cpu_percent | % | CPU usage. |
| Memory Usage | memory_percent | % | Memory usage. |
| Network Throughput | net_throughput | MiB | Network throughput. |
| Data Received per Second | net_recv | MiB | Data received per second. |
| Data Sent per Second | net_send | MiB | Data sent per second. |
| Disk Usage | ob_data_disk_used_size | GiB | The size of the data disk used by the node. |
* Disk and I/O
| Metric | Metric Name | Unit | Description |
|-----------|------------|-----|-------------|
| OB Data Disk Usage | ob_data_disk_percent | % | The usage of the data disk of the node. |
| OB Log Disk Usage | ob_clog_disk_percent | % | The usage of the log disk of the node. |
| Data Occupancy | ob_data_required_size | GiB | Data occupancy. |
| OB Log Disk IOPS | ob_clog_io | times/s | The average IOPS of the OB log disk. |
| OB Log Disk Average I/O Time | ob_clog_io_time | μs | The average I/O time of the OB log disk. |
| OB Log Disk Average I/O Data per Second | ob_clog_io_byte | MiB | The average I/O data of the OB log disk per second. |
| OB Log Disk I/O Utilization | ob_clog_io_util | % | The I/O utilization of the OB log disk. |
| OB Log Disk I/O Usage | obcloud.metric_chart.host.log_disk_io_util_percent | % | The I/O usage of the OB log disk. |
| OB Data Disk IOPS | ob_data_io | times/s | The average IOPS of the OB data disk. |
| OB Data Disk Average I/O Time | ob_data_io_time | μs | The average I/O time of the OB data disk. |
| OB Data Disk Average I/O Data per Second | ob_data_io_byte | MiB | The average I/O data of the OB data disk per second. |
| OB Data Disk I/O Utilization | ob_data_io_util | % | The I/O utilization of the OB data disk. |
| OB Data Disk I/O Usage | obcloud.metric_chart.host.data_disk_io_util_percent | % | The I/O usage of the OB data disk. |
| OB Data Disk Throughput Utilization | obcloud.metric_chart.host.data_disk_throughput_util_percent | % | The throughput utilization of the OB data disk. This metric is supported only for clusters created in Alibaba Cloud, Huawei Cloud, or AWS. |
| OB Host IOPS | ob_host_real_time_iops | times/s | The IOPS of the OB host. This metric is supported only for clusters created in Alibaba Cloud, Huawei Cloud, or AWS. |
| OB Host Throughput | ob_host_real_time_throughput | MiB/s | The throughput of the OB host. This metric is supported only for clusters created in Alibaba Cloud, Huawei Cloud, or AWS. |
| OB Host I/O Utilization | ob_host_iops_used_percent | % | The I/O utilization of the OB host. This metric is supported only for clusters created in Alibaba Cloud, Huawei Cloud, or AWS. |
| OB Host Throughput Utilization |ob_host_throughput_used_percent | % | The throughput utilization of the OB host. This metric is supported only for clusters created in Alibaba Cloud, Huawei Cloud, or AWS. |
* System health and availability
| Metric | Metric Name | Unit | Description |
|-----------|------------|-----|--------------|
| NTP Offset | ntp_offset_milliseconds | ms | The NTP offset. |
| Uptime | uptime | s | The cumulative service time of the cluster. |
| OB Process Status | ob_process_exists | - | The status of the OceanBase process of the node. |