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Update alert rule for low space (#6376) #6401

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Sep 8, 2021
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Update alert rule for low space (#6376) #6401

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Update alert rule for low space
Liuxiaozhen12 Sep 2, 2021
1fc0094
Update alert-rules.md
TomShawn Sep 8, 2021
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13 changes: 11 additions & 2 deletions alert-rules.md
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Expand Up @@ -751,11 +751,20 @@ This section gives the alert rules for the TiKV component.

Check which kind of tasks has a higher value. You can normally find a solution to the Coprocessor and apply worker tasks from other metrics.

#### `TiKV_low_space_and_add_region`
#### `TiKV_low_space`

* Alert rule:

`count((sum(tikv_store_size_bytes{type="available"}) by (instance) / sum(tikv_store_size_bytes{type="capacity"}) by (instance) < 0.2) and (sum(tikv_raftstore_snapshot_traffic_total{type="applying"}) by (instance) > 0)) > 0`
`sum(tikv_store_size_bytes{type="available"}) by (instance) / sum(tikv_store_size_bytes{type="capacity"}) by (instance) < 0.2`

* Description:

The data volume of TiKV exceeds 80% of the configured node capacity or the disk capacity of the machine.

* Solution:

* Check the balance condition of node space.
* Make a plan to increase the disk capacity or delete some data or increase cluster node depending on different situations.

#### `TiKV_approximate_region_size`

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