Kiu/VictoriaMetrics
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Aliaksandr Valialkin 2020-06-18 23:54:44 +03:00
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20
README.md
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@ -225,15 +225,6 @@ Steps to add `vmstorage` node:
3. Gradually restart all the `vminsert` nodes with new `-storageNode` arg containing `<new_vmstorage_host>:8400`. 3. Gradually restart all the `vminsert` nodes with new `-storageNode` arg containing `<new_vmstorage_host>:8400`.
### Cluster availability
* HTTP load balancer must stop routing requests to unavailable `vminsert` and `vmselect` nodes.
* The cluster remains available if at least a single `vmstorage` node exists:
- `vminsert` re-routes incoming data from unavailable `vmstorage` nodes to healthy `vmstorage` nodes
- `vmselect` continues serving partial responses if at least a single `vmstorage` node is available.
### Updating / reconfiguring cluster nodes ### Updating / reconfiguring cluster nodes
All the node types - `vminsert`, `vmselect` and `vmstorage` - may be updated via graceful shutdown. All the node types - `vminsert`, `vmselect` and `vmstorage` - may be updated via graceful shutdown.
@ -244,6 +235,17 @@ Cluster should remain in working state if at least a single node of each type re
the update process. See [cluster availability](#cluster-availability) section for details. the update process. See [cluster availability](#cluster-availability) section for details.
### Cluster availability
* HTTP load balancer must stop routing requests to unavailable `vminsert` and `vmselect` nodes.
* The cluster remains available if at least a single `vmstorage` node exists:
- `vminsert` re-routes incoming data from unavailable `vmstorage` nodes to healthy `vmstorage` nodes
- `vmselect` continues serving partial responses if at least a single `vmstorage` node is available.
Data replication can be used for increasing storage durability. See [these docs](#replication-and-data-safety) for details.
### Capacity planning ### Capacity planning
Each instance type - `vminsert`, `vmselect` and `vmstorage` - can run on the most suitable hardware. Each instance type - `vminsert`, `vmselect` and `vmstorage` - can run on the most suitable hardware.

20
docs/Cluster-VictoriaMetrics.md
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@ -225,15 +225,6 @@ Steps to add `vmstorage` node:
3. Gradually restart all the `vminsert` nodes with new `-storageNode` arg containing `<new_vmstorage_host>:8400`. 3. Gradually restart all the `vminsert` nodes with new `-storageNode` arg containing `<new_vmstorage_host>:8400`.
### Cluster availability
* HTTP load balancer must stop routing requests to unavailable `vminsert` and `vmselect` nodes.
* The cluster remains available if at least a single `vmstorage` node exists:
- `vminsert` re-routes incoming data from unavailable `vmstorage` nodes to healthy `vmstorage` nodes
- `vmselect` continues serving partial responses if at least a single `vmstorage` node is available.
### Updating / reconfiguring cluster nodes ### Updating / reconfiguring cluster nodes
All the node types - `vminsert`, `vmselect` and `vmstorage` - may be updated via graceful shutdown. All the node types - `vminsert`, `vmselect` and `vmstorage` - may be updated via graceful shutdown.
@ -244,6 +235,17 @@ Cluster should remain in working state if at least a single node of each type re
the update process. See [cluster availability](#cluster-availability) section for details. the update process. See [cluster availability](#cluster-availability) section for details.
### Cluster availability
* HTTP load balancer must stop routing requests to unavailable `vminsert` and `vmselect` nodes.
* The cluster remains available if at least a single `vmstorage` node exists:
- `vminsert` re-routes incoming data from unavailable `vmstorage` nodes to healthy `vmstorage` nodes
- `vmselect` continues serving partial responses if at least a single `vmstorage` node is available.
Data replication can be used for increasing storage durability. See [these docs](#replication-and-data-safety) for details.
### Capacity planning ### Capacity planning
Each instance type - `vminsert`, `vmselect` and `vmstorage` - can run on the most suitable hardware. Each instance type - `vminsert`, `vmselect` and `vmstorage` - can run on the most suitable hardware.

4
docs/vmalert.md
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@ -20,6 +20,7 @@ may fail;
* by default, rules execution is sequential within one group, but persisting of execution results to remote * by default, rules execution is sequential within one group, but persisting of execution results to remote
storage is asynchronous. Hence, user shouldn't rely on recording rules chaining when result of previous storage is asynchronous. Hence, user shouldn't rely on recording rules chaining when result of previous
recording rule is reused in next one; recording rule is reused in next one;
* there is no `query` function support in templates yet;
* `vmalert` has no UI, just an API for getting groups and rules statuses. * `vmalert` has no UI, just an API for getting groups and rules statuses.
### QuickStart ### QuickStart
@ -85,6 +86,9 @@ and to send notifications about firing alerts to [Alertmanager](https://github.c
Recording rules allow you to precompute frequently needed or computationally expensive expressions Recording rules allow you to precompute frequently needed or computationally expensive expressions
and save their result as a new set of time series. and save their result as a new set of time series.
`vmalert` forbids to define duplicates - rules with the same combination of name, expression and labels
within one group.
##### Alerting rules ##### Alerting rules
The syntax for alerting rule is following: The syntax for alerting rule is following: