Monitor
Currently, CnosDB metrics can be collected by Prometheus or stored on CnosDB.
If you would like to see more metrics supported by CnosDB, please send an ISSUE to the repository.
Data Node Monitor Metrics
VNODE_DISK_STORAGE
Name
vnode_disk_storage
Category
Gauge
Description
The disk that the Vnode occupies.
Tag
| Field | Description |
|---|---|
| DATABASE | Database vnode belongs to |
| NODE_ID | ID of data node |
| TENANT | tenant vnode belongs to |
| VNODE_ID | ID of Vnode |
| VALUE | Disk that the Vnode occupies in bytes |
VNODE_CACHE_SIZE
Name
vnode_cache_size
Category
Gauge
Description
The cache size that vnode occupies in bytes.
Tag
| Field | Description |
|---|---|
| DATABASE | Database vnode belongs to |
| NODE_ID | ID of data node |
| TENANT | tenant vnode belongs to |
| VNODE_ID | ID of Vnode |
| VALUE | Cache that the Vnode occupies in bytes |
WRITE_DATA_IN
Name
write_data_in
Category
Count
Description
Data traffic written over http, excluding SQL.
Tag
| Field | Description |
|---|---|
| TIME | Time of data_in |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| VALUE | The total write traffic in Bytes |
SQL_DATA_IN
Name
sql_data_in
Category
Count
Description
Data traffic written by sql, including INSERT, COPY statements.
Tag
| Field | Description |
|---|---|
| TIME | Time of data_in |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| VALUE | The total write traffic in Bytes |
COORD_DATA_IN
Name
coord_data_in
Category
Count
Description
The total size of the written traffic when data is written to the database.
Tag
| Field | Description |
|---|---|
| TIME | Time of data_in |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| VALUE | The total write traffic in Bytes |
COORD_DATA_OUT
Name
coord_data_out
Category
Count
Description
Total outflow traffic for reading data from the database.
Tag
| Field | Description |
|---|---|
| TIME | Time of data out |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| VALUE | The total size of the read traffic in Bytes |
HTTP_DATA_OUT
Name
http_data_out
Category
Count
Description
The size of the Http return data
Tag
| Field | Description |
|---|---|
| TIME | Time of http_data_out |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| Database | Database name |
| User | User name |
| VALUE | The total size of the read traffic in Bytes |
USER_QUERIES
Name
user_queries
Category
Count
Description
The times the user queries from the database.
Tag
| Field | Description |
|---|---|
| TIME | Time of queries |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| USER | User name |
| VALUE | User Query times |
USER_WRITES
Name
user_writes
Category
Count
Description
The times the user writes to the database.
Tag
| Field | Description |
|---|---|
| TIME | Time of writes |
| DATABASE | Database name |
| NODE_ID | ID of data node |
| TENANT | Tenant name the database belongs to |
| USER | User name |
| VALUE | User write times |
Prometheus Monitor
Just add Job at the Prometheus configuration file.
scrape_configs:
# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
- job_name: 'cnosdb'
static_configs:
- targets: ['127.0.0.1:8902']
Parameter Description
targets is the adderss of CnosDB Http.
Store to CnosDB
Change the store_metrics in config to true.