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Add hugepages 2Mi and 1Gi fields to ResourceDescription and pass them to the statefulset (#2311)

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* Add hugepages-2Mi and 1Gi to ResourceDescription type and crd (#1549, #1788)
* Add tests for hugepages resource requests/limits
* Add tests for hugepages resource requests/limits on sidecars, too
* Add docs for hugepages support
* Add link to kubernetes docs on hugepages
* Add tests for hugepages not being set on container if not requested in custom resource
* Add hugepages resources fields to manifest docs
* Add hugepages resources fields to complete manifest example
* Add hugepages resources fields to chart crd

---------

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>
This commit is contained in:
Silas
2024-01-04 15:59:27 +01:00
committed by GitHub
co-authored by Felix Kunde
parent 3ca26d0dc8
commit 9581ba969b
9 changed files with 247 additions and 9 deletions
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docs/reference/cluster_manifest.md
+32
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@@ -359,6 +359,14 @@ CPU and memory requests for the Postgres container.
memory requests for the Postgres container. Optional, overrides the
`default_memory_request` operator configuration parameter.
* **hugepages-2Mi**
hugepages-2Mi requests for the sidecar container.
Optional, defaults to not set.
* **hugepages-1Gi**
1Gi hugepages requests for the sidecar container.
Optional, defaults to not set.
### Limits
CPU and memory limits for the Postgres container.
@@ -371,6 +379,14 @@ CPU and memory limits for the Postgres container.
memory limits for the Postgres container. Optional, overrides the
`default_memory_limits` operator configuration parameter.
* **hugepages-2Mi**
hugepages-2Mi requests for the sidecar container.
Optional, defaults to not set.
* **hugepages-1Gi**
1Gi hugepages requests for the sidecar container.
Optional, defaults to not set.
## Parameters defining how to clone the cluster from another one
Those parameters are applied when the cluster should be a clone of another one
@@ -500,6 +516,14 @@ CPU and memory requests for the sidecar container.
memory requests for the sidecar container. Optional, overrides the
`default_memory_request` operator configuration parameter. Optional.
* **hugepages-2Mi**
hugepages-2Mi requests for the sidecar container.
Optional, defaults to not set.
* **hugepages-1Gi**
1Gi hugepages requests for the sidecar container.
Optional, defaults to not set.
### Limits
CPU and memory limits for the sidecar container.
@@ -512,6 +536,14 @@ CPU and memory limits for the sidecar container.
memory limits for the sidecar container. Optional, overrides the
`default_memory_limits` operator configuration parameter. Optional.
* **hugepages-2Mi**
hugepages-2Mi requests for the sidecar container.
Optional, defaults to not set.
* **hugepages-1Gi**
1Gi hugepages requests for the sidecar container.
Optional, defaults to not set.
## Connection pooler
Parameters are grouped under the `connectionPooler` top-level key and specify
docs/user.md
+21
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@@ -690,6 +690,27 @@ manifest the operator will raise the limits to the configured minimum values.
If no resources are defined in the manifest they will be obtained from the
configured [default requests](reference/operator_parameters.md#kubernetes-resource-requests).
### HugePages support
The operator supports [HugePages](https://www.postgresql.org/docs/15/kernel-resources.html#LINUX-HUGEPAGES).
To enable HugePages, set the matching resource requests and/or limits in the manifest:
```yaml
spec:
resources:
requests:
hugepages-2Mi: 250Mi
hugepages-1Gi: 1Gi
limits:
hugepages-2Mi: 500Mi
hugepages-1Gi: 2Gi
```
There are no minimums or maximums and the default is 0 for both HugePage sizes,
but Kubernetes will not spin up the pod if the requested HugePages cannot be allocated.
For more information on HugePages in Kubernetes, see also
[https://kubernetes.io/docs/tasks/manage-hugepages/scheduling-hugepages/](https://kubernetes.io/docs/tasks/manage-hugepages/scheduling-hugepages/)
## Use taints, tolerations and node affinity for dedicated PostgreSQL nodes
To ensure Postgres pods are running on nodes without any other application pods,