Administration

This document addresses strategies and practices used in the operation of GreptimeDB systems and deployments.

Database/Cluster management

• Installation for GreptimeDB and the g-t-control command line tool.
• Database Configuration, please read the Configuration reference.
• Monitoring and Tracing for GreptimeDB.
• GreptimeDB Disaster Recovery.

Runtime information

• Find the topology information of the cluster though CLUSTER_INFO table.
• Find the table regions distribution though PARTITIONS and REGION_PEERS tables.

For example, find all the region id of a table:

SELECT greptime_partition_id FROM PARTITIONS WHERE table_name = 'monitor'

Find the distribution of all regions in a table:

SELECT b.peer_id as datanode_id,
       a.greptime_partition_id as region_id
FROM information_schema.partitions a LEFT JOIN information_schema.region_peers b
ON a.greptime_partition_id = b.region_id
WHERE a.table_name='monitor'
ORDER BY datanode_id ASC

The INFORMATION_SCHEMA database provides access to system metadata, such as the name of a database or table, the data type of a column, etc. Please read the reference.

Data management

• The Storage Location.
• Cluster Failover for GreptimeDB by Setting Remote WAL.
• Flush and Compaction for Table & Region.
• Partition the table by regions, read the Table Sharding reference.
  • Migrate the Region for Load Balance.
• Expire Data by Setting TTL.

Best Practices

TODO