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Add the configuration of podDisruptionBudget for knative operator (#5114) 

* Add the configuration of podDisruptionBudget for knative operator

* Add the description on the Pod Disruption Budget (PDB)

Signed-off-by: Vincent Hou <shou@us.ibm.com>

Signed-off-by: Vincent Hou <shou@us.ibm.com>
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Vincent 2022-08-31 10:07:17 -04:00 committed by GitHub
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20
docs/install/operator/configuring-eventing-cr.md
View File

@ -505,3 +505,23 @@ kn operator configure labels --component eventing --serviceName eventing-webhook
kn operator configure annotations --component eventing --serviceName eventing-webhook --key myannotations --value bar -n knative-eventing kn operator configure annotations --component eventing --serviceName eventing-webhook --key myannotations --value bar -n knative-eventing
kn operator configure selectors --component eventing --serviceName eventing-webhook --key myselector --value bar -n knative-eventing kn operator configure selectors --component eventing --serviceName eventing-webhook --key myselector --value bar -n knative-eventing
``` ```
## Override system podDisruptionBudgets
A Pod Disruption Budget (PDB) allows you to limit the disruption to your application when its pods need to be rescheduled
for maintenance reasons. Knative Operator allows you to configure the `minAvailable` for a specific podDisruptionBudget
resource in Eventing based on the name. To understand more about the configuration of the resource podDisruptionBudget, click [here](https://kubernetes.io/docs/tasks/run-application/configure-pdb/).
For example, if you would like to change `minAvailable` into 70% for the podDisruptionBudget named `eventing-webhook`,
you need to change your KnativeEventing CR as below:
```yaml
apiVersion: operator.knative.dev/v1beta1
kind: KnativeEventing
metadata:
name: knative-eventing
namespace: knative-eventing
spec:
podDisruptionBudgets:
- name: eventing-webhook
minAvailable: 70%
```

20
docs/install/operator/configuring-serving-cr.md
View File

@ -675,3 +675,23 @@ kn operator configure labels --component serving --serviceName webhook --key myl
kn operator configure annotations --component serving --serviceName webhook --key myannotations --value bar -n knative-serving kn operator configure annotations --component serving --serviceName webhook --key myannotations --value bar -n knative-serving
kn operator configure selectors --component serving --serviceName webhook --key myselector --value bar -n knative-serving kn operator configure selectors --component serving --serviceName webhook --key myselector --value bar -n knative-serving
``` ```
## Override system podDisruptionBudgets
A Pod Disruption Budget (PDB) allows you to limit the disruption to your application when its pods need to be rescheduled
for maintenance reasons. Knative Operator allows you to configure the `minAvailable` for a specific podDisruptionBudget
resource in Serving based on the name. To understand more about the configuration of the resource podDisruptionBudget, click [here](https://kubernetes.io/docs/tasks/run-application/configure-pdb/).
For example, if you would like to change `minAvailable` into 70% for the podDisruptionBudget named `activator-pdb`, you
need to change your KnativeServing CR as below:
```yaml
apiVersion: operator.knative.dev/v1beta1
kind: KnativeServing
metadata:
name: knative-serving
namespace: knative-serving
spec:
podDisruptionBudgets:
- name: activator-pdb
minAvailable: 70%
```