Monitoring
GreptimeDB 暴露了 Prometheus 指标, 用户可以使用 Prometheus 来采集指标。
Prometheus Configuration
编写 Prometheus 配置文件，并保存为prometheus.yml:
global:
scrape_interval: 15s
scrape_configs:
- job_name: 'greptimedb'
static_configs:
- targets: ['localhost:4000']global:
scrape_interval: 15s
scrape_configs:
- job_name: 'greptimedb'
static_configs:
- targets: ['localhost:4000']Start GreptimeDB and Prometheus
Binary
使用二进制安装 GreptimeDB 和 Prometheus
根据文档 安装 GreptimeDB
进入 Prometheus 官方文档 下载二进制，并执行以下命令:
./prometheus --config.file=prometheus.yml./prometheus --config.file=prometheus.yml在浏览器输入localhost:9090访问 Prometheus。
Docker
使用 Docker 安装 GreptimeDB 和 Prometheus
根据文档 安装 GreptimeDB
运行 Prometheus:
docker run \
-p 9090:9090 \
-v $(pwd)/prometheus.yml:/etc/prometheus/prometheus.yml \
prom/prometheusdocker run \
-p 9090:9090 \
-v $(pwd)/prometheus.yml:/etc/prometheus/prometheus.yml \
prom/prometheusKubernetes
- 安装 kube-prometheus-stack chart:
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install prometheus prometheus-community/kube-prometheus-stackhelm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install prometheus prometheus-community/kube-prometheus-stack- 使用 gtctl 安装 GreptimeDB cluster:
gtctl cluster create mycluster -n default \
--set cluster.prometheusMonitor.enabled=true \
--set cluster.prometheusMonitor.path="/metrics" \
--set cluster.prometheusMonitor.port="http" \
--set cluster.prometheusMonitor.interval="30s" \
--set cluster.prometheusMonitor.honorLabels=true \
--set cluster.prometheusMonitor.labelsSelector.release="prometheus"gtctl cluster create mycluster -n default \
--set cluster.prometheusMonitor.enabled=true \
--set cluster.prometheusMonitor.path="/metrics" \
--set cluster.prometheusMonitor.port="http" \
--set cluster.prometheusMonitor.interval="30s" \
--set cluster.prometheusMonitor.honorLabels=true \
--set cluster.prometheusMonitor.labelsSelector.release="prometheus"Metrics Detail
可以通过执行curl http://<host>:<port>/metrics的输出来获取 GreptimeDB 的最新指标。
Frontend
| Key | Type |
|---|---|
| greptime_table_operator_ingest_rows | counter |
| greptime_servers_error | counter |
| greptime_servers_http_requests_total | counter |
| greptime_servers_postgres_connection_count | gauge |
| greptime_servers_mysql_connection_count | gauge |
| greptime_query_merge_scan_regions | summary |
| greptime_servers_http_sql_elapsed | summary |
| greptime_query_optimize_physicalplan_elapsed | summary |
| greptime_frontend_handle_sql_elapsed | summary |
| greptime_http_track_metrics | summary |
| greptime_query_create_physicalplan_elapsed | summary |
| greptime_servers_mysql_query_elapsed | summary |
| greptime_servers_http_requests_elapsed | summary |
| greptime_query_execute_plan_elapsed | summary |
| greptime_catalog_kv_get_remote | summary |
| greptime_grpc_region_request | summary |
| greptime_query_merge_scan_poll_elapsed | summary |
| greptime_catalog_kv_get | summary |
| greptime_table_operator_create_table | summary |
Datanode
| Key | Type |
|---|---|
| greptime_opendal_bytes_total | counter |
| greptime_servers_http_requests_total | counter |
| greptime_opendal_requests_total | counter |
| greptime_catalog_catalog_count | gauge |
| greptime_catalog_schema_count | gauge |
| greptime_opendal_requests_duration_seconds | summary |
| greptime_http_track_metrics | summary |
| greptime_servers_http_requests_elapsed | summary |
Meta
| Key | Type |
|---|---|
| greptime_meta_create_schema | counter |
| greptime_servers_http_requests_total | counter |
| greptime_meta_create_catalog | counter |
| greptime_meta_heartbeat_connection_num | gauge |
| greptime_meta_txn_request | summary |
| greptime_meta_kv_request | summary |
| greptime_meta_create_schema | summary |
| greptime_meta_create_catalog | summary |
| greptime_meta_handler_execute | summary |
| greptime_servers_http_requests_elapsed | summary |
| greptime_http_track_metrics | summary |
| greptime_meta_procedure_create_table | summary |
| greptime_grpc_region_request | summary |