Hi Pradeep, On Sun, Jun 21, 2020 at 6:22 PM Pradeep Antil <pradeepantil(a)gmail.com&gt; wrote: > Hi Techies, > > I am trying to deploy the latest Openstack "ussuri" on CentOS 8 VM using > packstack. I have successfully installed it but the issue is that i want > to i want to add my interface "enp0s3" to ovs bridge br-ex. On CentOS 7 we > can do this via ifcfg-* files using network-scripts. > Yes in CentOS8 network-script is not installed/enabled by default. So to manage ovs bridges you either need to install/enable network-scripts or manage bridges with NetworkManager via nmcli or other tools. > > But i am not sure how this can be done on CentOS 8 VM as in this release > network is controlled via network manager. On br-ex i will attach an > external provider network or a flat network. > I have pushed some fixes to doc[1] and packstack[2] to have bridges work with network-scripts and remove Network Manager warning. [1] https://github.com/redhat-openstack/website/pull/1388 [2] https://review.opendev.org/738223 > > [image: image.png] > > I have referred the below steps for the deployment. > > dnf update -y > dnf config-manager --enable PowerTools > dnf install -y centos-release-openstack-ussuri > dnf update -y > dnf install -y openstack-packstack > reboot > packstack --gen-answer-file=/root/answer.txt > > Edit answer file > > CONFIG_NEUTRON_ML2_TYPE_DRIVERS=vxlan,flat > CONFIG_NEUTRON_ML2_TENANT_NETWORK_TYPES=vxlan > CONFIG_PROVISION_DEMO=n > CONFIG_KEYSTONE_ADMIN_PW=P@ssw0rd > packstack --answer-file=/root/answer.txt > > Following is the output of ovs command and interfaces on my centos 8 > system > > [image: image.png] > > > If you like to manage ovs bridges with Network Manager you can try below steps:- # Install and Enable ovs plugin for NetworkManager sudo dnf install -y NetworkManager-ovs sudo systemctl restart NetworkManager # Discover network configs for external interface 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 interface export GATEWAY=`ip r get 1.1.1.1 | awk '/dev/{print $3}' | tr -d '[[:space:]]'` export MAC=`ip a show enp0s3|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 $GATEWAY ipv4.dns 8.8.8.8 # This do no't persist after reboot sudo ovs-vsctl set bridge br-ex other-config:hwaddr=$MAC sudo nmcli conn add type ovs-port conn.interface port1 master br-ex sudo nmcli conn add type ethernet conn.interface enp0s3 master port1 sudo nmcli conn up ovs-slave-enp0s3 # 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 enp0s3|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 wrong network config ssh connection will be lost. -- > Best Regards > Pradeep Kumar > _______________________________________________ > dev mailing list > dev(a)lists.rdoproject.org > http://lists.rdoproject.org/mailman/listinfo/dev > > To unsubscribe: dev-unsubscribe(a)lists.rdoproject.org > Thanks and Regards Yatin Karel