You can perform certain index management tasks through the Couchbase Cloud UI.
If a cluster is running the Index Service, indexes can be accessed under the cluster’s Tools > Indexes tab. An index list, showing a summary of all indexes, is displayed in table format.
In order to access indexes in the Couchbase Cloud UI, the following permissions are required:
A cluster’s Tools > Indexes tab shows a summary of all the indexes on the cluster. The summary is displayed in table format, with sortable columns and a row for each index.
The index list displays the following information about each index:
- Index Name
The name of the index or replica.
The current state of the Index Service on the node on which this index is stored: ready, pause, or warmup.
The number of requests per second.
- Resident Ratio
The percentage of the data held in memory.
The number of items currently indexed.
- Data Size
The size of indexable data that is maintained for the index or replica.
The bucket for which the index or replica was created.
A Trash icon is displayed at the end of each row, which can be used to drop the index.
To work with an index, begin by finding it in the index summary and clicking on its row. This opens the index’s fly-out menu:
At the top of the fly-out menu, the Index Definition section displays the N1QL statement used to define the index. Directly below it is a snippet of the information from the index list.
Click Open in Workbench to open the index definition in the Query Workbench.
The index definition is loaded into the Query Editor. From here you can modify the index definition as required in order to create a new index. (You cannot change the definition of the existing index, but you can create a new index with the modified definition.)
The Bucket’s Index Performance section displays statistics for the Index Service as a whole, as well as the specific bucket that the current index is defined for.
The following statistics apply to the Index Service as a whole:
- Index Service RAM Quota
The buffer cache size for the Index Service across all nodes.
- RAM Used/Remaining
The amount of memory used by the Index Service, and the remaining amount of memory available to the Index Service.
- Index Service RAM Percent
The amount of memory used by the Index Service, as a percentage of the amount of memory available to the Index Service.
The following statistics apply to the specific bucket that the current index is defined for:
- Index Data Size
The actual data size consumed by all indexes for the selected bucket.
- Index Fragmentation
The percentage fragmentation of all indexes for the selected bucket. This indicates the percentage of disk space consumed by the indexes, but not utilized for items stored in the indexes.
- Indexes Disk Size
The total disk file size consumed by all indexes for the selected bucket.
- Total Scan Rate
The number of index items scanned by the Index Service per second for the selected bucket.