Re: [rdo-users] Packstack, Centos 8 and NetworkManager

Hi Bernd, On Sun, Jun 7, 2020 at 7:38 AM Bernd Bausch <berndbausch(a)gmail.com&gt; wrote: Feels like u didn't installed/enabled network-scripts when disabled NetworkManager?, i pushed a PR[1] to add step to install network-scripts explicitly on CentOS8. [1] https://github.com/redhat-openstack/website/pull/1388 NetworkManager does not work with ifcfg-* scripts for ovs-bridges[2], so if you want to manage ovs bridges with NetworkManager need to use nmcli or some other tool. [2] https://bugzilla.redhat.com/show_bug.cgi?id=1589869 Either install/enable network-scripts or use nmcli to manage ovs bridges with NetworkManager. I tried following for external network and it worked for me. # Install and Enable ovs plugin for NetworkManager sudo dnf install -y NetworkManager-ovs sudo systemctl restart NetworkManager # Discover network configs for ens3 export IP=`ip r get 1.1.1.1 | awk '/dev/{print $7}' | tr -d '[[:space:]]'` export NETMASK=`ip route show | grep $IP |cut -d" " -f1|cut -d"/" -f2 |tr -d '[[:space:]]'` # We need the gateway as we'll be reconfiguring the ens3 interface export GATEWAY=`ip r get 1.1.1.1 | awk '/dev/{print $3}' | tr -d '[[:space:]]'` export MAC=`ip a show ens3|grep link/ether|awk '{print $2}' | tr -d '[[:space:]]'` # Delete ovs bridge created outside of NetworkManager sudo ovs-vsctl del-br br-ex sudo nmcli conn add type ovs-bridge conn.interface br-ex sudo nmcli conn add type ovs-port conn.interface port0 master br-ex sudo nmcli conn add type ovs-interface slave-type ovs-port conn.interface br-ex master port0 ipv4.method manual ipv4.address $IP/$NETMASK ipv4.gateway $GATEWAY ipv4.dns 8.8.8.8 # This didn't persist after reboot, need to find why and get it fixed some way sudo ovs-vsctl set bridge br-ex other-config:hwaddr=$MAC sudo nmcli conn add type ovs-port conn.interface port1 master br-ex sudo nmcli conn add type ethernet conn.interface ens3 master port1 sudo nmcli conn up ovs-slave-ens3 # to persist mac on ovs bridge with reboots sudo tee /etc/NetworkManager/dispatcher.d/25-ovs-br-ex <<EOF #!/bin/sh # This is a NetworkManager dispatcher / networkd-dispatcher script for # ovs to set mac address for slave # For NetworkManager consider only up/down events [ 0 -ge 2 ] && [ "" != "up" ] && exit 0 if [ "\$DEVICE_IFACE" == "br-ex" ]; then export MAC=\$(ip a show ens3|grep link/ether|awk '{print \$2}' | tr -d '[[:space:]]') ovs-vsctl set bridge br-ex other-config:hwaddr=\$MAC fi exit 0 EOF sudo chmod +x /etc/NetworkManager/dispatcher.d/25-ovs-br-ex Ensure you have console access to the packstack vm as in case of misconfiguration of network ssh connection will be lost. Thanks and Regards Yatin Karel