Monitoring NebulaGraph

Collect and monitor the general performance Metrics of nebulaGraph.

Protocol Use：nebulaGraph

The monitoring has two parts,nebulaGraph_stats and rocksdb_stats.
nebulaGraph_stats is nebulaGraph's statistics, and rocksdb_stats is rocksdb's statistics.

1、Obtain available parameters through the stats and rocksdb stats interfaces.

1.1、 If you only need to get nebulaGraph_stats, you need to ensure that you have access to stats, or you'll get errors.

The default port is 19669 and the access address is http://ip:19669/stats

1.2、If you need to obtain additional parameters for rocksdb stats, you need to ensure that you have access to rocksdb stats, otherwise an error will be reported.

Once you connect to NebulaGraph for the first time, you must first register your Storage service in order to properly query your data.

There is help_doc: https://docs.nebula-graph.com.cn/3.4.3/4.deployment-and-installation/connect-to-nebula-graph/

https://docs.nebula-graph.com.cn/3.4.3/2.quick-start/3.quick-start-on-premise/3.1add-storage-hosts/

The default port is 19779 and the access address is:http://ip:19779/rocksdb_stats

Configuration parameter

Parameter name	Parameter help description
Monitoring Host	Monitored IPV4, IPV6 or domain name. Note⚠️Without protocol header (eg: https://, http://)
Monitoring name	Identify the name of this monitoring. The name needs to be unique
graphPort	Port of the Graph service provided by Nebula Graph
timePeriod	The value can be 5 seconds, 60 seconds, 600 seconds, or 3600 seconds, indicating the last 5 seconds, last 1 minute, last 10 minutes, and last 1 hour, respectively.
storagePort	Port of the storage service provided by Nebula Graph
Timeout	Allow collection response time
Collection interval	Interval time of monitor periodic data collection, unit: second, and the minimum interval that can be set is 30 seconds
Whether to detect	Whether to detect and check the availability of monitoring before adding monitoring. Adding and modifying operations will continue only after the detection is successful
Description remarks	For more information about identifying and describing this monitoring, users can note information here

Collection Metrics

Metrics Set：nebulaGraph_stats

Too many indicators, related links are as follows https://docs.nebula-graph.com.cn/3.4.3/6.monitor-and-metrics/1.query-performance-metrics/

Metric name	Metric unit	Metric help description
num_queries_hit_memory_watermark_rate		The rate of statements that reached the memory watermark.
num_queries_hit_memory_watermark_sum		The sum of statements that reached the memory watermark.
num_reclaimed_expired_sessions_sum		Number of expired sessions actively reclaimed by the server.
...		...

Metrics Set：rocksdb_stats

Too many indicators, related links are as follows https://docs.nebula-graph.com.cn/3.4.3/6.monitor-and-metrics/2.rocksdb-statistics/

Metric name	Metric unit	Metric help description
rocksdb.backup.read.bytes		Number of bytes read during the RocksDB database backup.
rocksdb.backup.write.bytes		Number of bytes written during the RocksDB database backup.
...		...