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Tidy documentation on NetworkPolicy endPort field

pull/26847/head
Tim Bannister 2021-03-04 23:01:53 +00:00
parent 60935ce8cc
commit 7d5cd32070
1 changed files with 4 additions and 4 deletions
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content/en/docs/concepts/services-networking/network-policies.md
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@ -227,7 +227,7 @@ You must be using a {{< glossary_tooltip text="CNI" term_id="cni" >}} plugin tha
When writing a NetworkPolicy, you can target a range of ports instead of a single port. When writing a NetworkPolicy, you can target a range of ports instead of a single port.
This is achiveable with the usage of the `endPort` field, as the following example: This is achievable with the usage of the `endPort` field, as the following example:
```yaml ```yaml
apiVersion: networking.k8s.io/v1 apiVersion: networking.k8s.io/v1
@ -251,11 +251,11 @@ spec:
endPort: 32768 endPort: 32768
``` ```
The above rule will allow a Pod with label `db` on the namespace `default` to communicate with any IP within the range `10.0.0.0/24` if the target port is between the range 32000 and 32768. The above rule allows any Pod with label `db` on the namespace `default` to communicate with any IP within the range `10.0.0.0/24` over TCP, provided that the target port is between the range 32000 and 32768.
The following restrictions apply when using this field: The following restrictions apply when using this field:
* As an alpha feature, this is disabled by default. To enable endPort field at a cluster level, you (or your cluster administrator) will need to enable the `NetworkPolicyEndPort` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) for the API server with `--feature-gates=NetworkPolicyEndPort=true,…`. * As an alpha feature, this is disabled by default. To enable the `endPort` field at a cluster level, you (or your cluster administrator) need to enable the `NetworkPolicyEndPort` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) for the API server with `--feature-gates=NetworkPolicyEndPort=true,…`.
* The `endPort` field must be equal than or greater to `port` field. * The `endPort` field must be equal than or greater to the `port` field.
* `endPort` can only be defined if `port` is also defined. * `endPort` can only be defined if `port` is also defined.
* Both ports must be numeric. * Both ports must be numeric.