Installation of Three node OpenStack Queens Cluster – Part Seven

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Configuring Neutron on network Node

“Everyone has been made for some particular work, and the desire for that work has been put in every heart.”
–Rumi

Step One: Install NTP and add necessary repositories:

[[email protected] ~]#  yum -y install ntp
 Loaded plugins: fastestmirror
 Loading mirror speeds from cached hostfile
 base: centos.mirror.liquidtelecom.com
 extras: centos.mirror.liquidtelecom.com
 updates: centos.mirror.liquidtelecom.com
 Resolving Dependencies
 --> Running transaction check
[[email protected] ~]# vim /etc/ntp.conf
# server 0.centos.pool.ntp.org iburst
# server 1.centos.pool.ntp.org iburst
# server 2.centos.pool.ntp.org iburst
# server 3.centos.pool.ntp.org iburst
# Add your own server pools
 server 0.africa.pool.ntp.org
 server 1.africa.pool.ntp.org
 server 2.africa.pool.ntp.org
 server 3.africa.pool.ntp.org
[[email protected] ~]#  systemctl start ntpd 
[[email protected] ~]#  systemctl enable ntpd 
Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.
[[email protected] ~]# firewall-cmd --add-service=ntp --permanent 
 success
[[email protected] ~]# firewall-cmd --reload 
 success

Add epel and other repositories

[[email protected] ~]# yum -y install epel-release.noarch 
[[email protected] ~]# yum -y install centos-release-openstack-queens
 Downloading packages:
 (1/5): centos-release-qemu-ev-1.0-4.el7.centos.noarch.rpm                                 |  11 kB  00:00:00     
 (2/5): centos-release-ceph-luminous-1.1-2.el7.centos.noarch.rpm                           | 4.4 kB  00:00:00     
 (3/5): centos-release-virt-common-1-1.el7.centos.noarch.rpm                               | 4.5 kB  00:00:00     
 (4/5): centos-release-storage-common-2-2.el7.centos.noarch.rpm                            | 5.1 kB  00:00:00     
 (5/5): centos-release-openstack-queens-1-2.el7.centos.noarch.rpm                          | 5.3 kB  00:00:01 
 [[email protected] ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-OpenStack-queens.repo

Step Two: Install neutron and everything it needs e.g openvswitch etc

[[email protected] ~]$ yum --enablerepo=centos-openstack-queens,epel -y install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch
 Loaded plugins: fastestmirror
 Loading mirror speeds from cached hostfile
 base: centos.mirror.liquidtelecom.com
 centos-qemu-ev: centos.mirror.liquidtelecom.com
 epel: mirror.bytemark.co.uk
 extras: centos.mirror.liquidtelecom.com
 updates: centos.mirror.liquidtelecom.com
 centos-ceph-luminous                                                                      | 2.9 kB  00:00:00     
 centos-openstack-queens                                                                   | 2.9 kB  00:00:00     
 centos-qemu-ev                                                                            | 2.9 kB  00:00:00     
 (1/3): centos-qemu-ev/7/x86_64/primary_db                                                 |  58 kB  00:00:00     
 (2/3): centos-ceph-luminous/7/x86_64/primary_db                                           | 142 kB  00:00:02     
 (3/3): centos-openstack-queens/7/x86_64/primary_db                                        | 1.1 MB  00:00:23     
 Resolving Dependencies

Step Three: Back up the original neutron config file and create a new one with the following configs

[[email protected] ~]# mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.bak 
[[email protected] ~]# vim /etc/neutron/neutron.conf
# create new file
 [DEFAULT]
 core_plugin = ml2
 service_plugins = router
 auth_strategy = keystone
 state_path = /var/lib/neutron
 allow_overlapping_ips = True
# RabbitMQ connection info
 transport_url = rabbit://openstack:[email protected]
# Keystone auth info
 [keystone_authtoken]
 www_authenticate_uri = http://192.168.122.130:5000
 auth_url = http://192.168.122.130:5000
 memcached_servers = 192.168.122.130:11211
 auth_type = password
 project_domain_name = default
 user_domain_name = default
 project_name = service
 username = neutron
 password = neutron123
 [oslo_concurrency]
 lock_path = $state_path/lock

Step Four: Head over to the following files and edit as well as shown below

[[email protected] ~]# vim /etc/neutron/dhcp_agent.ini
# on line 17: add this
 interface_driver = openvswitch
# on line 28: uncomment it as shown
 dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
# on line 37: uncomment and change to look like below
 enable_isolated_metadata = true
[[email protected] ~]# vim /etc/neutron/metadata_agent.ini
# on line 22: uncomment and specify Nova API server
 nova_metadata_host = 192.168.122.130
# on line 34: uncomment and specify any secret key you like
 metadata_proxy_shared_secret = metadata_secret
# on line 260: uncomment and specify Memcache server
 memcache_servers = 192.168.122.130:11211
[[email protected] ~]# vim /etc/neutron/plugins/ml2/ml2_conf.ini
# on line 129: add the following
 [ml2]
 type_drivers = flat,vlan,gre,vxlan
 tenant_network_types =
 mechanism_drivers = openvswitch,l2population
 extension_drivers = port_security
[[email protected] ~]# vim /etc/neutron/plugins/ml2/openvswitch_agent.ini
 on line 308: add as follows
 [securitygroup]
 firewall_driver = openvswitch
 enable_security_group = true
 enable_ipset = true

It is now time to start and enable Neutron services.. Whoa

[[email protected] ~]#  ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

[[email protected] ~]# systemctl start openvswitch
[[email protected] ~]# systemctl enable openvswitch
 Created symlink from /etc/systemd/system/multi-user.target.wants/openvswitch.service to /usr/lib/systemd/system/openvswitch.service.

[[email protected] ~]# ovs-vsctl add-br br-int
[[email protected] ~]# for service in dhcp-agent l3-agent metadata-agent openvswitch-agent; do
 systemctl start neutron-$service
 systemctl enable neutron-$service
 done 
 Created symlink from /etc/systemd/system/multi-user.target.wants/neutron-dhcp-agent.service to /usr/lib/systemd/system/neutron-dhcp-agent.service.
 Created symlink from /etc/systemd/system/multi-user.target.wants/neutron-l3-agent.service to /usr/lib/systemd/system/neutron-l3-agent.service.
 Created symlink from /etc/systemd/system/multi-user.target.wants/neutron-metadata-agent.service to /usr/lib/systemd/system/neutron-metadata-agent.service.
 Created symlink from /etc/systemd/system/multi-user.target.wants/neutron-openvswitch-agent.service to /usr/lib/systemd/system/neutron-openvswitch-agent.service.

Thank you guys for following through thus far. Our next sequel we will be configuring Neutron on the Compute Node. Stay tuned and we hope you’ve enjoyed so far. The links below are for our previous guides on this sequel:

Installation of Openstack three Node Cluster on CentOS 7 Part One

Installation of Three node OpenStack Queens Cluster – Part Two

Installation of Three node OpenStack Queens Cluster – Part Three

Installation of Three node OpenStack Queens Cluster – Part Four

Installation of Three node OpenStack Queens Cluster – Part Five

Installation of Three node OpenStack Queens Cluster – Part Six

Next guide goes below

Installation of Three node OpenStack Queens Cluster – Part Eight

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A systems engineer with excellent skills in systems administration, cloud computing, systems deployment, virtualization, containers, and a certified ethical hacker.