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docs: Add SQL query to check used and free space in Clickhouse

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Simon Larsen
2025-09-06 20:35:17 +01:00
parent 9e36188975
commit 5100fbda52
1 changed files with 14 additions and 0 deletions
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HelmChart/Docs/Clickhouse.md
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@@ -36,4 +36,18 @@ GROUP BY
database,
table
ORDER BY size DESC;
```
#### Check the size fo used and free space in Clickhouse
```sql
SELECT
d.name AS disk_name,
formatReadableSize(d.free_space) AS free_space,
formatReadableSize(d.total_space) AS total_space,
formatReadableSize(d.total_space - d.free_space) AS used_space,
round((d.total_space - d.free_space) / d.total_space * 100, 2) AS used_percent
FROM system.disks d
ORDER BY used_percent DESC;
```