Preconfigure an SLES installation

Before performing SUSE Linux Enterprise Server (SLES) installations, consider the following prerequisite steps:

• For SLES 15 installations, disable CLOUD_NETCONFIG_MANAGE prior to installing MKE:

  1. Set CLOUD_NETCONFIG_MANAGE="no" in the /etc/sysconfig/network/ifcfg-eth0 network interface configuration file.

  2. Run the service network restart command.

• By default, SLES disables connection tracking. To allow Kubernetes controllers in Calico to reach the Kubernetes API server, enable connection tracking on the loopback interface for SLES by running the following commands for each node in the cluster:

  sudo mkdir -p /etc/sysconfig/SuSEfirewall2.d/defaults
  echo FW_LO_NOTRACK=no | sudo tee \
  /etc/sysconfig/SuSEfirewall2.d/defaults/99-docker.cfg
  sudo SuSEfirewall2 start
  

See also

• Kubernetes

• Calico