Update a database
Limited availability
InfluxDB Clustered is currently only available to a limited group of InfluxData customers. If interested in being part of the limited access group, please contact the InfluxData Sales team.
Use the influxctl database update command
to update a database in your InfluxDB cluster.
If you haven’t already, download and install the
influxctlCLI.Run the
influxctl database updatecommand and provide the following:- Database name
- Optional: Database retention period (default is infinite)
- Optional: Database table (measurement) limit (default is 500)
- Optional: Database column limit (default is 250)
influxctl database update DATABASE_NAME \
--retention-period 30d \
--max-tables 500 \
--max-tables 250
Database names can’t be updated
The influxctl database update command uses the database name to identify which
database to apply updates to. The database name itself can’t be updated.
- Retention period syntax
- Database naming restrictions
- InfluxQL DBRP naming convention
- Table and column limits
Retention period syntax
Use the --retention-period flag to define a specific
retention period
for the database.
The retention period value is a time duration value made up of a numeric value
plus a duration unit. For example, 30d means 30 days.
A zero duration retention period is infinite and data will not expire.
The retention period value cannot be negative or contain whitespace.
Valid durations units include
- m: minute
- h: hour
- d: day
- w: week
- mo: month
- y: year
Example retention period values
0d: infinite/none3d: 3 days6w: 6 weeks1mo: 1 month (30 days)1y: 1 year30d30d: 60 days2.5d: 60 hours
Database naming restrictions
Database names must adhere to the following naming restrictions:
- Must contain two or more characters
- Cannot start with an underscore (
_) - Cannot contain whitespace characters, double quotes (
"), or percent signs (%)
InfluxQL DBRP naming convention
In InfluxDB 1.x, data is stored in databases and retention policies. In InfluxDB Clustered, databases and retention policies have been merged into databases, where databases have a retention period, but retention policies are no longer part of the data model. Because InfluxQL uses the 1.x data model, a database must be mapped to a v1 database and retention policy (DBRP) to be queryable with InfluxQL.
When naming a database that you want to query with InfluxQL, use the following naming convention to automatically map v1 DBRP combinations to a database:
database_name/retention_policy_name
Database naming examples
| v1 Database name | v1 Retention Policy name | New database name |
|---|---|---|
| db | rp | db/rp |
| telegraf | autogen | telegraf/autogen |
| webmetrics | 1w-downsampled | webmetrics/1w-downsampled |
Table and column limits
In InfluxDB Clustered, table (measurement) and column limits can be
configured using the --max-tables and --max-columns flags.
Each measurement is represented by a table.
Time, fields, and tags are each represented by a column.
Default maximum number of tables: 500
Default maximum number of columns: 250
Setting table and column limits above the default limits may adversely affect database performance.
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Support and feedback
Thank you for being part of our community! We welcome and encourage your feedback and bug reports for InfluxDB and this documentation. To find support, use the following resources:
Customers with an annual or support contract can contact InfluxData Support.