mirror of https://github.com/knative/docs.git
[release-1.2] Add per-revision examples to serving config (#5023)
* Add per-revision examples to serving config * make global config first tab, clean up formatting * some updates for revision configs * update option for Operator * re-add config map setting * updates from SME * minor updates Co-authored-by: Ashleigh Brennan <abrennan@redhat.com>
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@ -5,10 +5,12 @@ The `config-defaults` ConfigMap, known as the Defaults ConfigMap, contains setti
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This ConfigMap is located in the `knative-serving` namespace.
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You can view the current `config-defaults` ConfigMap by running the following command:
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```yaml
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kubectl get configmap -n knative-serving config-defaults -oyaml
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```
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## Example config-defaults ConfigMap
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```yaml
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apiVersion: v1
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kind: ConfigMap
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@ -30,319 +32,484 @@ data:
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allow-container-concurrency-zero: "true"
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enable-service-links: "false"
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```
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See below for a description of each property.
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## Properties
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### Revision Timeout Seconds
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### Revision timeout seconds
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{% raw %}
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revision-timeout-seconds contains the default number of
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seconds to use for the revision's per-request timeout, if
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none is specified.
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The revision timeout value determines the default number of seconds to use for the revision's per-request timeout if none is specified.
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{% endraw %}
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**Key**: `revision-timeout-seconds`
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**Default**: `"300"` (5 minutes)
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* **Global key:** `revision-timeout-seconds`
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* **Per-revision annotation key:** `timeout`
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* **Possible values:** integer
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* **Default:** `"300"` (5 minutes)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-timeout-seconds: "300" # 5 minutes
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```
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### Max Revision Timeout Seconds
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-timeout-seconds: "300"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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timeout: 300
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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```
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### Max revision timeout seconds
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{% raw %}
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max-revision-timeout-seconds contains the maximum number of
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seconds that can be used for revision-timeout-seconds.
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This value must be greater than or equal to revision-timeout-seconds.
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If omitted, the system default is used (600 seconds).
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The `max-revision-timeout-seconds` value determines the maximum number of seconds that can be used for `revision-timeout-seconds`. This value must be greater than or equal to `revision-timeout-seconds`. If omitted, the system default is used (600 seconds).
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If this value is increased, the activator's terminationGraceTimeSeconds
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should also be increased to prevent in-flight requests being disrupted.
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If this value is increased, the activator's `terminationGraceTimeSeconds` should also be increased to prevent in-flight requests from being disrupted.
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{% endraw %}
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**Key**: `max-revision-timeout-seconds`
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**Default**: `"600"` (10 minutes)
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* **Global key:** `max-revision-timeout-seconds`
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* **Per-revision annotation key:** N/A
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* **Possible values:** integer
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* **Default:** `"600"` (10 minutes)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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max-revision-timeout-seconds: "600" # 10 minutes
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```
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### Revision Cpu Request
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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max-revision-timeout-seconds: "600"
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```
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### Revision CPU request
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{% raw %}
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revision-cpu-request contains the cpu allocation to assign
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to revisions by default. If omitted, no value is specified
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and the system default is used.
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Below is an example of setting revision-cpu-request.
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By default, it is not set by Knative.
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The `revision-cpu-request` value determines the CPU allocation assigned to revisions by default. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-cpu-request`
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**Default**: `"400m"` (0.4 of a CPU (aka 400 milli-CPU))
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* **Global key:** `revision-cpu-request`
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* **Per-revision annotation key:** `cpu`
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* **Possible values:** integer
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* **Default:** `"400m"` (0.4 of a CPU, or 400 milli-CPU)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-cpu-request: "400m" # 0.4 of a CPU (aka 400 milli-CPU)
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```
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### Revision Memory Request
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-cpu-request: "400m"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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cpu: "400m"
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```
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### Revision memory request
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{% raw %}
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revision-memory-request contains the memory allocation to assign
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to revisions by default. If omitted, no value is specified
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and the system default is used.
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Below is an example of setting revision-memory-request.
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By default, it is not set by Knative.
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The `revision-memory-request` value determines the memory allocation assigned
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to revisions by default. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-memory-request`
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**Default**: `"100M"` (100 megabytes of memory)
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* **Global key:** `revision-memory-request`
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* **Per-revision annotation key:** `memory`
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* **Possible values:** integer
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* **Default:** `"100M"` (100 megabytes of memory)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-memory-request: "100M" # 100 megabytes of memory
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```
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-memory-request: "100M"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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memory: "100M"
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```
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### Revision Ephemeral Storage Request
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{% raw %}
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revision-ephemeral-storage-request contains the ephemeral storage
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allocation to assign to revisions by default. If omitted, no value is
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specified and the system default is used.
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The `revision-ephemeral-storage-request` value determines the ephemeral storage
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allocation assigned to revisions by default. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-ephemeral-storage-request`
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**Default**: `"500M"` (500 megabytes of storage)
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* **Global key:** `revision-ephemeral-storage-request`
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* **Per-revision annotation key:** `ephemeral-storage`
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* **Possible values:** integer
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* **Default:** `"500M"` (500 megabytes of storage)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-ephemeral-storage-request: "500M" # 500 megabytes of storage
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```
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### Revision Cpu Limit
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-ephemeral-storage-request: "500M"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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ephemeral-storage: "500M"
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```
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### Revision CPU limit
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{% raw %}
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revision-cpu-limit contains the cpu allocation to limit
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revisions to by default. If omitted, no value is specified
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and the system default is used.
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Below is an example of setting revision-cpu-limit.
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By default, it is not set by Knative.
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The `revision-cpu-limit` value determines the default CPU allocation limit for revisions. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-cpu-limit`
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**Default**: `"1000m"` (1 CPU (aka 1000 milli-CPU))
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* **Global key:** `revision-cpu-limit`
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* **Per-revision annotation key:** `cpu`
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* **Possible values:** integer
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* **Default:** `"1000m"` (1 CPU, or 1000 milli-CPU)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-cpu-limit: "1000m" # 1 CPU (aka 1000 milli-CPU)
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```
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### Revision Memory Limit
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-cpu-limit: "1000m"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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cpu: "1000m"
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```
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### Revision memory limit
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{% raw %}
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revision-memory-limit contains the memory allocation to limit
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revisions to by default. If omitted, no value is specified
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and the system default is used.
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Below is an example of setting revision-memory-limit.
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By default, it is not set by Knative.
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The `revision-memory-limit` value determines the default memory allocation limit for revisions. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-memory-limit`
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**Default**: `"200M"` (200 megabytes of memory)
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* **Global key:** `revision-memory-limit`
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* **Per-revision annotation key:** `memory`
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* **Possible values:** integer
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* **Default:** `"200M"` (200 megabytes of memory)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-memory-limit: "200M" # 200 megabytes of memory
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```
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-memory-limit: "200M"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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memory: "200M"
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```
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### Revision Ephemeral Storage Limit
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{% raw %}
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revision-ephemeral-storage-limit contains the ephemeral storage
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allocation to limit revisions to by default. If omitted, no value is
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specified and the system default is used.
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The `revision-ephemeral-storage-limit` value determines the default ephemeral storage limit allocated to revisions. If this value is omitted, the system default is used. This key is not enabled by default for Knative.
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{% endraw %}
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**Key**: `revision-ephemeral-storage-limit`
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**Default**: `"750M"` (750 megabytes of storage)
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* **Global key:** `revision-ephemeral-storage-limit`
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* **Per-revision annotation key:** `ephemeral-storage`
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* **Possible values:** integer
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* **Default:** `"750M"` (750 megabytes of storage)
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-ephemeral-storage-limit: "750M" # 750 megabytes of storage
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```
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### Container Name Template
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=== "Global (ConfigMap)"
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
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namespace: knative-serving
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data:
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revision-ephemeral-storage-limit: "750M"
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```
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=== "Per Revision"
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-go
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namespace: default
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spec:
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template:
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spec:
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containers:
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- image: gcr.io/knative-samples/helloworld-go
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resources:
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requests:
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ephemeral-storage: "750M"
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```
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### Container name template
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{% raw %}
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container-name-template contains a template for the default
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container name, if none is specified. This field supports
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Go templating and is supplied with the ObjectMeta of the
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enclosing Service or Configuration, so values such as
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{{.Name}} are also valid.
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The `container-name-template` value provides a template for the default
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container name if no container name is specified. This field supports Go templating and is supplied by the `ObjectMeta` of the enclosing Service or Configuration, so values such as `{{.Name}}` are also valid.
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{% endraw %}
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**Key**: `container-name-template`
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**Default**: `"user-container"`
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* **Global key:** `container-name-template`
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* **Per-revision annotation key:** `name`
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* **Possible values:** string
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* **Default:** `"user-container"`
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|
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**Example:**
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```yaml
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: config-defaults
|
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namespace: knative-serving
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data:
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container-name-template: "user-container"
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```
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### Container Concurrency
|
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=== "Global (ConfigMap)"
|
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```yaml
|
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apiVersion: v1
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kind: ConfigMap
|
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metadata:
|
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name: config-defaults
|
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namespace: knative-serving
|
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data:
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container-name-template: "user-container"
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```
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|
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=== "Per Revision"
|
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```yaml
|
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apiVersion: serving.knative.dev/v1
|
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kind: Service
|
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metadata:
|
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name: helloworld-go
|
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namespace: default
|
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spec:
|
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template:
|
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spec:
|
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containers:
|
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- name: user-container
|
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image: gcr.io/knative-samples/helloworld-go
|
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```
|
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|
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### Container concurrency
|
||||
{% raw %}
|
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container-concurrency specifies the maximum number
|
||||
of requests the Container can handle at once, and requests
|
||||
above this threshold are queued. Setting a value of zero
|
||||
disables this throttling and lets through as many requests as
|
||||
The `container-concurrency` value specifies the maximum number of requests the container can handle at once. Requests above this threshold are queued. Setting a value of zero disables this throttling and lets through as many requests as
|
||||
the pod receives.
|
||||
{% endraw %}
|
||||
|
||||
**Key**: `container-concurrency`
|
||||
|
||||
**Default**: `"0"`
|
||||
* **Global key:** `container-concurrency`
|
||||
* **Per-revision spec key:** `containerConcurrency`
|
||||
* **Possible values:** integer
|
||||
* **Default:** `"0"`
|
||||
|
||||
**Example:**
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
container-concurrency: "0"
|
||||
```
|
||||
|
||||
### Container Concurrency Max Limit
|
||||
=== "Global (ConfigMap)"
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
container-concurrency: "0"
|
||||
```
|
||||
|
||||
=== "Per Revision"
|
||||
```yaml
|
||||
apiVersion: serving.knative.dev/v1
|
||||
kind: Service
|
||||
metadata:
|
||||
name: helloworld-go
|
||||
namespace: default
|
||||
spec:
|
||||
template:
|
||||
spec:
|
||||
containerConcurrency: 0
|
||||
```
|
||||
|
||||
### Container concurrency max limit
|
||||
|
||||
{% raw %}
|
||||
|
||||
The container concurrency max limit is an operator setting ensuring that
|
||||
the individual revisions cannot have arbitrary large concurrency
|
||||
values, or autoscaling targets. `container-concurrency` default setting
|
||||
must be at or below this value.
|
||||
|
||||
Must be greater than 1.
|
||||
The `container-concurrency-max-limit` setting disables arbitrary large concurrency values, or autoscaling targets, for individual revisions. The `container-concurrency` default setting must be at or below this value. The value of the `container-concurrency-max-limit` setting must be greater than 1.
|
||||
|
||||
!!! note
|
||||
Even with this set, a user can choose a `containerConcurrency` value of 0 (unbounded) unless `allow-container-concurrency-zero` is set to "false".
|
||||
Even with this set, a user can choose a `containerConcurrency` value of zero (unbounded), unless `allow-container-concurrency-zero` is set to `"false"`.
|
||||
|
||||
{% endraw %}
|
||||
|
||||
**Key**: `container-concurrency-max-limit`
|
||||
|
||||
**Default**: `"1000"`
|
||||
* **Global key:** `container-concurrency-max-limit`
|
||||
* **Per-revision annotation key:** N/A
|
||||
* **Possible values:** integer
|
||||
* **Default:** `"1000"`
|
||||
|
||||
**Example:**
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
container-concurrency-max-limit: "1000"
|
||||
```
|
||||
|
||||
### Allow Container Concurrency Zero
|
||||
=== "Global (ConfigMap)"
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
container-concurrency-max-limit: "1000"
|
||||
```
|
||||
|
||||
=== "Global (Operator)"
|
||||
```yaml
|
||||
apiVersion: operator.knative.dev/v1beta1
|
||||
kind: KnativeServing
|
||||
metadata:
|
||||
name: knative-serving
|
||||
namespace: knative-serving
|
||||
spec:
|
||||
config:
|
||||
defaults:
|
||||
container-concurrency-max-limit: "1000"
|
||||
```
|
||||
|
||||
### Allow container concurrency zero
|
||||
{% raw %}
|
||||
allow-container-concurrency-zero controls whether users can
|
||||
specify 0 (i.e. unbounded) for containerConcurrency.
|
||||
The `allow-container-concurrency-zero` value determines whether users can
|
||||
specify `0` (unbounded) for `containerConcurrency`.
|
||||
{% endraw %}
|
||||
|
||||
**Key**: `allow-container-concurrency-zero`
|
||||
|
||||
**Default**: `"true"`
|
||||
* **Global key:** `allow-container-concurrency-zero`
|
||||
* **Per-revision annotation key:** N/A
|
||||
* **Possible values:** boolean
|
||||
* **Default:** `"true"`
|
||||
|
||||
**Example:**
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
allow-container-concurrency-zero: "true"
|
||||
```
|
||||
|
||||
### Enable Service Links
|
||||
=== "Global (ConfigMap)"
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
allow-container-concurrency-zero: "true"
|
||||
```
|
||||
|
||||
### Enable Service links
|
||||
|
||||
{% raw %}
|
||||
|
||||
enable-service-links specifies the default value used for the enableServiceLinks field of the PodSpec, when it is omitted by the user. See [the Kubernetes Documentation for the enableServiceLinks Feature](https://kubernetes.io/docs/concepts/services-networking/connect-applications-service/#accessing-the-service).
|
||||
The `enable-service-links` value specifies the default value used for the `enableServiceLinks` field of the `PodSpec` when it is omitted by the user. See [the Kubernetes documentation about the `enableServiceLinks` feature](https://kubernetes.io/docs/concepts/services-networking/connect-applications-service/#accessing-the-service).
|
||||
|
||||
This is a tri-state flag with possible values of (true|false|default).
|
||||
|
||||
In environments with large number of services it is suggested to set this value to `false`. See [serving#8498](https://github.com/knative/serving/issues/8498).
|
||||
In environments with large number of Services, it is suggested to set this value to `false`. See [serving#8498](https://github.com/knative/serving/issues/8498).
|
||||
|
||||
{% endraw %}
|
||||
|
||||
**Key**: `enable-service-links`
|
||||
|
||||
**Default**: `"false"`
|
||||
* **Global key:** `enable-service-links`
|
||||
* **Per-revision annotation key:** N/A
|
||||
* **Possible values:** `true|false|default`
|
||||
* **Default:** `"false"`
|
||||
|
||||
**Example:**
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
enable-service-links: "false"
|
||||
```
|
||||
|
||||
=== "Global (ConfigMap)"
|
||||
```yaml
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: config-defaults
|
||||
namespace: knative-serving
|
||||
data:
|
||||
enable-service-links: "false"
|
||||
```
|
||||
|
|
|
|||
Loading…
Reference in New Issue