OpenStack Caracal : Configure Neutron (Control Node)2024/08/06

Configure OpenStack Network Service (Neutron).

This example is not on the All in One Settings like here, but Configure the 3 Nodes environment like follows.
Neutron needs a plugin software, it's possible to choose it from some softwares.
It chooses ML2 plugin on this example. ( it uses Open vSwitch under the backend )

------------+--------------------------+--------------------------+------------
            |                          |                          |
        eth0|10.0.0.30             eth0|10.0.0.50             eth0|10.0.0.51
+-----------+-----------+  +-----------+-----------+  +-----------+-----------+
|   [ dlp.srv.world ]   |  | [ network.srv.world ] |  |  [ node01.srv.world ] |
|     (Control Node)    |  |     (Network Node)    |  |     (Compute Node)    |
|                       |  |                       |  |                       |
|  MariaDB    RabbitMQ  |  |  Neutron L2/L3 Agent  |  |        Libvirt        |
|  Memcached  Nginx     |  |   Neutron Metadata    |  |      Nova Compute     |
|  Keystone   httpd     |  |     Open vSwitch      |  |    Neutron L2 Agent   |
|  Glance     Nova API  |  |                       |  |      Open vSwitch     |
|  Neutron Server       |  |                       |  |                       |
|  Neutron Metadata     |  |                       |  |                       |
+-----------------------+  +-----------------------+  +-----------------------+

[1]	Add user or service for Neutron on Keystone Server, refer to here.
[2]	Install Neutron Server on Control Host.

# install from Caracal, EPEL, CRB

[root@dlp ~(keystone)]#

dnf --enablerepo=centos-openstack-caracal,epel,crb -y install openstack-neutron openstack-neutron-ml2

[3]	Configure Neutron Server.

[root@dlp ~(keystone)]#

mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org

[root@dlp ~(keystone)]#

vi /etc/neutron/neutron.conf

# create new

[DEFAULT]
bind_host = 127.0.0.1
bind_port = 9696
core_plugin = ml2
service_plugins = router
auth_strategy = keystone
state_path = /var/lib/neutron
dhcp_agent_notification = True
allow_overlapping_ips = True
notify_nova_on_port_status_changes = True
notify_nova_on_port_data_changes = True
# RabbitMQ connection info
transport_url = rabbit://openstack:password@dlp.srv.world

# Keystone auth info
[keystone_authtoken]
www_authenticate_uri = https://dlp.srv.world:5000
auth_url = https://dlp.srv.world:5000
memcached_servers = dlp.srv.world:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = neutron
password = servicepassword
# if using self-signed certs on httpd Keystone, turn to [true]
insecure = false

# MariaDB connection info
[database]
connection = mysql+pymysql://neutron:password@dlp.srv.world/neutron_ml2

# Nova connection info
[nova]
auth_url = https://dlp.srv.world:5000
auth_type = password
project_domain_name = Default
user_domain_name = Default
region_name = RegionOne
project_name = service
username = nova
password = servicepassword
# if using self-signed certs on httpd Keystone, turn to [true]
insecure = false

[oslo_concurrency]
lock_path = $state_path/tmp

[oslo_policy]
enforce_new_defaults = true

[root@dlp ~(keystone)]#

chmod 640 /etc/neutron/neutron.conf

[root@dlp ~(keystone)]#

chgrp neutron /etc/neutron/neutron.conf

[root@dlp ~(keystone)]#

vi /etc/neutron/metadata_agent.ini

[DEFAULT]

# line 2 : add to specify Nova API server

nova_metadata_host = dlp.srv.world
nova_metadata_protocol = https

# specify any secret key you like

metadata_proxy_shared_secret = metadata_secret

# specify Memcache server

memcache_servers = dlp.srv.world:11211

[root@dlp ~(keystone)]#

vi /etc/neutron/plugins/ml2/ml2_conf.ini

# add to last line
# OK with no value for [tenant_network_types] (set later if need)

[ml2]
type_drivers = flat,vlan,gre,vxlan
tenant_network_types =
mechanism_drivers = openvswitch
extension_drivers = port_security,qos

[root@dlp ~(keystone)]#

vi /etc/nova/nova.conf

# add follows to the end : Neutron auth info
# the value of [metadata_proxy_shared_secret] is the same with the one in [metadata_agent.ini]
[neutron]
auth_url = https://dlp.srv.world:5000
auth_type = password
project_domain_name = Default
user_domain_name = Default
region_name = RegionOne
project_name = service
username = neutron
password = servicepassword
service_metadata_proxy = True
metadata_proxy_shared_secret = metadata_secret
insecure = false

[4]	Configure Nginx for proxy settings.

[root@dlp ~(keystone)]#

vi /etc/nginx/nginx.conf

# add into the [stream] section

stream {
    upstream glance-api {
        server 127.0.0.1:9292;
    }
    server {
        listen 10.0.0.30:9292 ssl;
        proxy_pass glance-api;
    }
    upstream nova-api {
        server 127.0.0.1:8774;
    }
    server {
        listen 10.0.0.30:8774 ssl;
        proxy_pass nova-api;
    }
    upstream nova-metadata-api {
        server 127.0.0.1:8775;
    }
    server {
        listen 10.0.0.30:8775 ssl;
        proxy_pass nova-metadata-api;
    }
    upstream placement-api {
        server 127.0.0.1:8778;
    }
    server {
        listen 10.0.0.30:8778 ssl;
        proxy_pass placement-api;
    }
    upstream novncproxy {
        server 127.0.0.1:6080;
    }
    server {
        listen 10.0.0.30:6080 ssl;
        proxy_pass novncproxy;
    }
    upstream neutron-api {
        server 127.0.0.1:9696;
    }
    server {
        listen 10.0.0.30:9696 ssl;
        proxy_pass neutron-api;
    }
    ssl_certificate "/etc/letsencrypt/live/dlp.srv.world/fullchain.pem";
    ssl_certificate_key "/etc/letsencrypt/live/dlp.srv.world/privkey.pem";
}

[5]	If SELinux is enabled, change policy.

[root@dlp ~(keystone)]#

dnf --enablerepo=centos-openstack-caracal -y install openstack-selinux

[root@dlp ~(keystone)]#

setsebool -P neutron_can_network on

[root@dlp ~(keystone)]#

setsebool -P daemons_enable_cluster_mode on

[root@dlp ~(keystone)]#

vi ovsofctl.te

# create new

module ovsofctl 1.0;

require {
        type neutron_t;
        type neutron_exec_t;
        type dnsmasq_t;
        type openvswitch_load_module_t;
        type tracefs_t;
        type var_run_t;
        type openvswitch_t;
        type ovsdb_port_t;
        type kdumpctl_exec_t;
        type devicekit_exec_t;
        type lsmd_exec_t;
        type lsmd_plugin_exec_t;
        type locate_exec_t;
        type glance_scrubber_exec_t;
        type gpg_agent_exec_t;
        type mount_exec_t;
        type rsync_exec_t;
        type journalctl_exec_t;
        type virt_qemu_ga_exec_t;
        type httpd_config_t;
        type chfn_exec_t;
        type glance_api_exec_t;
        type ssh_exec_t;
        type ssh_agent_exec_t;
        type systemd_hwdb_exec_t;
        type checkpolicy_exec_t;
        type chronyc_exec_t;
        type groupadd_exec_t;
        type loadkeys_exec_t;
        type fusermount_exec_t;
        type dmesg_exec_t;
        type rpmdb_exec_t;
        type memcached_exec_t;
        type conmon_exec_t;
        type systemd_tmpfiles_exec_t;
        type passwd_exec_t;
        type ssh_keygen_exec_t;
        type NetworkManager_exec_t;
        type su_exec_t;
        type dbusd_exec_t;
        type numad_exec_t;
        type container_runtime_exec_t;
        type ping_exec_t;
        type rpcbind_exec_t;
        type virtd_exec_t;
        type policykit_auth_exec_t;
        type systemd_systemctl_exec_t;
        type plymouth_exec_t;
        type keepalived_exec_t;
        type mandb_exec_t;
        type systemd_passwd_agent_exec_t;
        type traceroute_exec_t;
        type fsadm_exec_t;
        type thumb_exec_t;
        type mysqld_exec_t;
        type nova_exec_t;
        type crontab_exec_t;
        type swtpm_exec_t;
        type virsh_exec_t;
        type mysqld_safe_exec_t;
        type systemd_notify_exec_t;
        type vlock_exec_t;
        type gpg_exec_t;
        type login_exec_t;
        type hostname_exec_t;
        class sock_file write;
        class file { execute_no_trans getattr };
        class dir search;
        class tcp_socket name_bind;
        class capability { dac_override sys_rawio };
}

#============= neutron_t ==============
allow neutron_t self:capability { dac_override sys_rawio };
allow neutron_t neutron_exec_t:file execute_no_trans;
allow neutron_t NetworkManager_exec_t:file getattr;
allow neutron_t checkpolicy_exec_t:file getattr;
allow neutron_t chfn_exec_t:file getattr;
allow neutron_t chronyc_exec_t:file getattr;
allow neutron_t conmon_exec_t:file getattr;
allow neutron_t container_runtime_exec_t:file getattr;
allow neutron_t crontab_exec_t:file getattr;
allow neutron_t dbusd_exec_t:file getattr;
allow neutron_t devicekit_exec_t:file getattr;
allow neutron_t dmesg_exec_t:file getattr;
allow neutron_t fsadm_exec_t:file getattr;
allow neutron_t fusermount_exec_t:file getattr;
allow neutron_t glance_api_exec_t:file getattr;
allow neutron_t glance_scrubber_exec_t:file getattr;
allow neutron_t gpg_agent_exec_t:file getattr;
allow neutron_t gpg_exec_t:file getattr;
allow neutron_t groupadd_exec_t:file getattr;
allow neutron_t hostname_exec_t:file getattr;
allow neutron_t httpd_config_t:dir search;
allow neutron_t journalctl_exec_t:file getattr;
allow neutron_t kdumpctl_exec_t:file getattr;
allow neutron_t keepalived_exec_t:file getattr;
allow neutron_t loadkeys_exec_t:file getattr;
allow neutron_t locate_exec_t:file getattr;
allow neutron_t login_exec_t:file getattr;
allow neutron_t lsmd_exec_t:file getattr;
allow neutron_t lsmd_plugin_exec_t:file getattr;
allow neutron_t mandb_exec_t:file getattr;
allow neutron_t memcached_exec_t:file getattr;
allow neutron_t mount_exec_t:file getattr;
allow neutron_t mysqld_exec_t:file getattr;
allow neutron_t mysqld_safe_exec_t:file getattr;
allow neutron_t nova_exec_t:file getattr;
allow neutron_t numad_exec_t:file getattr;
allow neutron_t passwd_exec_t:file getattr;
allow neutron_t ping_exec_t:file getattr;
allow neutron_t plymouth_exec_t:file getattr;
allow neutron_t policykit_auth_exec_t:file getattr;
allow neutron_t rpcbind_exec_t:file getattr;
allow neutron_t rpmdb_exec_t:file getattr;
allow neutron_t rsync_exec_t:file getattr;
allow neutron_t ssh_agent_exec_t:file getattr;
allow neutron_t ssh_exec_t:file getattr;
allow neutron_t ssh_keygen_exec_t:file getattr;
allow neutron_t su_exec_t:file getattr;
allow neutron_t swtpm_exec_t:file getattr;
allow neutron_t systemd_hwdb_exec_t:file getattr;
allow neutron_t systemd_notify_exec_t:file getattr;
allow neutron_t systemd_passwd_agent_exec_t:file getattr;
allow neutron_t systemd_systemctl_exec_t:file getattr;
allow neutron_t systemd_tmpfiles_exec_t:file getattr;
allow neutron_t thumb_exec_t:file getattr;
allow neutron_t traceroute_exec_t:file getattr;
allow neutron_t virsh_exec_t:file getattr;
allow neutron_t virt_qemu_ga_exec_t:file getattr;
allow neutron_t virtd_exec_t:file getattr;
allow neutron_t vlock_exec_t:file getattr;

#============= openvswitch_t ==============
allow openvswitch_t var_run_t:sock_file write;
allow openvswitch_t ovsdb_port_t:tcp_socket name_bind;

#============= openvswitch_load_module_t ==============
allow openvswitch_load_module_t tracefs_t:dir search;

#============= dnsmasq_t ==============
allow dnsmasq_t self:capability dac_override;

[root@dlp ~(keystone)]#

checkmodule -m -M -o ovsofctl.mod ovsofctl.te

[root@dlp ~(keystone)]#

semodule_package --outfile ovsofctl.pp --module ovsofctl.mod

[root@dlp ~(keystone)]#

semodule -i ovsofctl.pp

[6]	If Firewalld is running, allow service ports.

[root@dlp ~(keystone)]#

firewall-cmd --add-port=9696/tcp

success
[root@dlp ~(keystone)]#

firewall-cmd --runtime-to-permanent

success

[7]	Start Neutron server.

[root@dlp ~(keystone)]#

ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

[root@dlp ~(keystone)]#

su -s /bin/bash neutron -c "neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head"

[root@dlp ~(keystone)]#

systemctl enable --now neutron-server neutron-metadata-agent

[root@dlp ~(keystone)]#

systemctl restart openstack-nova-api nginx

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