The error i am getting when i click "Networks" in "Project" "Networks" tab is "Error: Invalid service catalog service: network" Tried restarting the neutron services and rebooted both controller and compute nodes...but nothing helped me.

Found out the cause issue causing this failure......Following is the brief summary on the same....

Modified the file /etc/neutron/plugin.ini in my network node as below

[ovs] ... local_ip = <my ip=""> bridge_mappings = external:br-ex

[agent] ... tunnel_types = gre

and then started the neutron services... [root@network neutron]# systemctl status openvswitch-nonetwork.service openvswitch-nonetwork.service - Open vSwitch Internal Unit Loaded: loaded (/usr/lib/systemd/system/openvswitch-nonetwork.service; static) Active: active (exited) since Wed 2016-04-20 12:37:02 EDT; 20h ago Main PID: 22168 (code=exited, status=0/SUCCESS) CGroup: /system.slice/openvswitch-nonetwork.service ├─22186 ovsdb-server: monitoring pid 22187 (healthy) ├─22187 ovsdb-server /etc/openvswitch/conf.db -vconsole:emer -vsyslog:err -vfile:info --remote=punix:/var/run/openvswitch/db.sock --private-key=db:Open_vS... ├─22201 ovs-vswitchd: monitoring pid 22202 (healthy) └─22202 ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --mlockall --no-chdir --log-file=/var/log/openvswitch/ovs-v...

Apr 20 12:37:02 network ovs-ctl[22168]: Creating empty database /etc/openvswitch/conf.db [ OK ] Apr 20 12:37:02 network ovs-ctl[22168]: Starting ovsdb-server [ OK ] Apr 20 12:37:02 network ovs-vsctl[22188]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --no-wait -- init -- set Open_vSwitch . db-version=7.6.2 Apr 20 12:37:02 network ovs-vsctl[22193]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --no-wait set Open_vSwitch . ovs-version=2.3.1 "external-ids:system-id=...unknown\"" Apr 20 12:37:02 network ovs-ctl[22168]: Configuring Open vSwitch system IDs [ OK ] Apr 20 12:37:02 network ovs-ctl[22168]: Inserting openvswitch module [ OK ] Apr 20 12:37:02 network ovs-ctl[22168]: Starting ovs-vswitchd [ OK ] Apr 20 12:37:02 network ovs-ctl[22168]: Enabling remote OVSDB managers [ OK ] Apr 20 12:37:02 network systemd[1]: Started Open vSwitch Internal Unit. Apr 20 12:37:33 network python[22239]: SELinux is preventing /usr/sbin/ovs-vswitchd from search access on the directory .

                                   *****  Plugin catchall (100. confidence) suggests   **************************...

Hint: Some lines were ellipsized, use -l to show in full.