7.2. Enabling Stream Control Transmission Protocol (SCTP)
As a cluster administrator, you can load and enable the blacklisted SCTP kernel module on worker nodes in your cluster.
Prerequisites
-
Install the OpenShift CLI (
oc
). -
Access to the cluster as a user with the
cluster-admin
role.
Procedure
Create a file named
load-sctp-module.yaml
that contains the following YAML definition:apiVersion: machineconfiguration.openshift.io/v1 kind: MachineConfig metadata: labels: machineconfiguration.openshift.io/role: worker name: load-sctp-module spec: config: ignition: version: 2.2.0 storage: files: - contents: source: data:, verification: {} filesystem: root mode: 420 path: /etc/modprobe.d/sctp-blacklist.conf - contents: source: data:text/plain;charset=utf-8,sctp filesystem: root mode: 420 path: /etc/modules-load.d/sctp-load.conf
To create the
MachineConfig
object, enter the following command:$ oc create -f load-sctp-module.yaml
Optional: To watch the status of the nodes while the MachineConfig Operator applies the configuration change, enter the following command. When the status of a node transitions to
Ready
, the configuration update is applied.$ oc get nodes