11. Adjust interface MTU valuesfor undercloud and overcloudΒΆ

  • Adjust interface mtus
ip link set eth0 mtu 1350
echo "MTU=1350" >> /etc/sysconfig/network-scripts/ifcfg-eth0
ip link set eth1 mtu 1350
echo "MTU=1350" >> /etc/sysconfig/network-scripts/ifcfg-eth1
ip link set eth2 mtu 1350
echo "MTU=1350" >> /etc/sysconfig/network-scripts/ifcfg-eth2
  • Modify dnsmasq-ironic.conf
echo -e "\ndhcp-option-force=26,1350" >> /etc/dnsmasq-ironic.conf
systemctl restart 'neutron-*'