第 7 章 Using the Stream Control Transmission Protocol (SCTP) on a bare metal cluster
As a cluster administrator, you can use the Stream Control Transmission Protocol (SCTP) on a cluster.
7.1. Support for Stream Control Transmission Protocol (SCTP) on OpenShift Container Platform
As a cluster administrator, you can enable SCTP on the hosts in the cluster. On Red Hat Enterprise Linux CoreOS (RHCOS), the SCTP module is disabled by default.
SCTP is a reliable message based protocol that runs on top of an IP network.
When enabled, you can use SCTP as a protocol with pods, services, and network policy. A Service object must be defined with the type parameter set to either the ClusterIP or NodePort value.
7.1.1. Example configurations using SCTP protocol
You can configure a pod or service to use SCTP by setting the protocol parameter to the SCTP value in the pod or service object.
In the following example, a pod is configured to use SCTP:
apiVersion: v1
kind: Pod
metadata:
namespace: project1
name: example-pod
spec:
containers:
- name: example-pod
...
ports:
- containerPort: 30100
name: sctpserver
protocol: SCTPIn the following example, a service is configured to use SCTP:
apiVersion: v1
kind: Service
metadata:
namespace: project1
name: sctpserver
spec:
...
ports:
- name: sctpserver
protocol: SCTP
port: 30100
targetPort: 30100
type: ClusterIP
In the following example, a NetworkPolicy object is configured to apply to SCTP network traffic on port 80 from any pods with a specific label:
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
name: allow-sctp-on-http
spec:
podSelector:
matchLabels:
role: web
ingress:
- ports:
- protocol: SCTP
port: 80