'How to change the replication of a vgroup in TDengine?

I'am using TDengine as a time-series storage engine. How could I change the replication of a vgroup from 2 to 3? During the change, should I do or not to do something?

tdengine


Solution 1:[1]

try following commands in taos shell

alter database db replica 3

Solution 2:[2]

Change it will sql statement:

alter database dbname replica 3.

Here's the full list you can use with alter for a database:

  • keep: days to keep data in the database
  • cache/blocks: the memory cache for vnode: cache*blocks
  • wal
  • fsync
  • replica
  • cachelast
  • quorum

See more details in docs for Database Management

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Xiao Ping
Solution 2 zitsen

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