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Full AWS gp3 support for iops and througput config. (#1261)

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Support new AWS EBS volume type `gp3` with `iops` and `throughput` in the manifest.

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>
This commit is contained in:
Jan Mussler
2021-01-25 10:07:18 +01:00
committed by GitHub
co-authored by Felix Kunde
parent 4ea0b5f432
commit 4a88f00a3f
15 changed files with 535 additions and 165 deletions
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docs/developer.md
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@@ -235,6 +235,24 @@ Then you can for example check the Patroni logs:
kubectl logs acid-minimal-cluster-0
```
## Unit tests with Mocks and K8s Fake API
Whenever possible you should rely on leveraging proper mocks and K8s fake client that allows full fledged testing of K8s objects in your unit tests.
To enable mocks, a code annotation is needed:
[Mock code gen annotation](https://github.com/zalando/postgres-operator/blob/master/pkg/util/volumes/volumes.go#L3)
To generate mocks run:
```bash
make mocks
```
Examples for mocks can be found in:
[Example mock usage](https://github.com/zalando/postgres-operator/blob/master/pkg/cluster/volumes_test.go#L248)
Examples for fake K8s objects can be found in:
[Example fake K8s client usage](https://github.com/zalando/postgres-operator/blob/master/pkg/cluster/volumes_test.go#L166)
## End-to-end tests
The operator provides reference end-to-end (e2e) tests to
docs/reference/cluster_manifest.md
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@@ -338,13 +338,13 @@ archive is supported.
the url to S3 bucket containing the WAL archive of the remote primary.
Required when the `standby` section is present.
## EBS volume resizing
## Volume properties
Those parameters are grouped under the `volume` top-level key and define the
properties of the persistent storage that stores Postgres data.
* **size**
the size of the target EBS volume. Usual Kubernetes size modifiers, i.e. `Gi`
the size of the target volume. Usual Kubernetes size modifiers, i.e. `Gi`
or `Mi`, apply. Required.
* **storageClass**
@@ -356,6 +356,14 @@ properties of the persistent storage that stores Postgres data.
* **subPath**
Subpath to use when mounting volume into Spilo container. Optional.
* **iops**
When running the operator on AWS the latest generation of EBS volumes (`gp3`)
allows for configuring the number of IOPS. Maximum is 16000. Optional.
* **throughput**
When running the operator on AWS the latest generation of EBS volumes (`gp3`)
allows for configuring the throughput in MB/s. Maximum is 1000. Optional.
## Sidecar definitions
Those parameters are defined under the `sidecars` key. They consist of a list
docs/reference/operator_parameters.md
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@@ -373,10 +373,13 @@ configuration they are grouped under the `kubernetes` key.
possible value is `parallel`.
* **storage_resize_mode**
defines how operator handels the difference between requested volume size and
actual size. Available options are: ebs - tries to resize EBS volume, pvc -
changes PVC definition, off - disables resize of the volumes. Default is "pvc".
When using OpenShift please use one of the other available options.
defines how operator handles the difference between the requested volume size and
the actual size. Available options are:
1. `ebs` : operator resizes EBS volumes directly and executes `resizefs` within a pod
2. `pvc` : operator only changes PVC definition
3. `off` : disables resize of the volumes.
4. `mixed` :operator uses AWS API to adjust size, throughput, and IOPS, and calls pvc change for file system resize
Default is "pvc".
## Kubernetes resource requests