Hi Team,

I tried installing Undercloud using the below link:

https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/deployment/install_overcloud.html#deploy-the-overcloud

I am getting the following error:

(undercloud) [stack@undercloud ~]$ openstack tripleo validator run --group pre-introspection
Selected log directory '/home/stack/validations' does not exist. Attempting to create it.
+--------------------------------------+---------------------------------+--------+------------+-----------------+-------------------+-------------+
| UUID                                 | Validations                     | Status | Host_Group | Status_by_Host  | Unreachable_Hosts | Duration    |
+--------------------------------------+---------------------------------+--------+------------+-----------------+-------------------+-------------+
| 7029c1f6-5ab4-465d-82d7-3f29058012ce | check-cpu                       | PASSED | localhost  | localhost       |                   | 0:00:02.531 |
| db059017-30f1-4b97-925e-3f55b586d492 | check-disk-space                | PASSED | localhost  | localhost       |                   | 0:00:04.432 |
| e23dd9a1-90d3-4797-ae0a-b43e55ab6179 | check-ram                       | PASSED | localhost  | localhost       |                   | 0:00:01.324 |
| 598ca02d-258a-44ad-b78d-3877321cdfe6 | check-selinux-mode              | PASSED | localhost  | localhost       |                   | 0:00:01.591 |
| c4435b4c-b432-4a1e-8a99-00638034a884 | check-network-gateway           | FAILED | undercloud | No host matched |                   |             |
| cb1eed23-ef2f-4acd-a43a-86fb09bf0372 | undercloud-disk-space           | FAILED | undercloud | No host matched |                   |             |
| abde5329-9289-4b24-bf16-c4d82b03e67a | undercloud-neutron-sanity-check | FAILED | undercloud | No host matched |                   |             |
| d0e5fdca-ece6-4a37-b759-ed1fac31a10f | ctlplane-ip-range               | FAILED | undercloud | No host matched |                   |             |
| 91511807-225c-4852-bb52-6d0003c51d49 | dhcp-introspection              | FAILED | undercloud | No host matched |                   |             |
| e96f7704-d2fb-465d-972b-47e2f057449c | undercloud-tokenflush           | FAILED | undercloud | No host matched |                   |             |


As per the validation link, 
https://docs.openstack.org/tripleo-validations/wallaby/validations-pre-introspection-details.html

check-network-gateway

If gateway in undercloud.conf is different from local_ip, verify that the gateway exists and is reachable

Observation - In my case IP specified in local_ip and gateway, both are pingable, but still this error is being observed


ctlplane-ip-range

Check the number of IP addresses available for the overcloud nodes.

Verify that the number of IP addresses defined in dhcp_start and dhcp_end fields in undercloud.conf is not too low.

Observation - In my case I have defined more than 20 IPs


Similarly for disk related issue, I have dedicated 100 GB space in /var and /

Filesystem           Size  Used Avail Use% Mounted on
devtmpfs              12G     0   12G   0% /dev
tmpfs                 12G   84K   12G   1% /dev/shm
tmpfs                 12G  8.7M   12G   1% /run
tmpfs                 12G     0   12G   0% /sys/fs/cgroup
/dev/mapper/cl-root  100G  2.5G   98G   3% /
/dev/mapper/cl-home   47G  365M   47G   1% /home
/dev/mapper/cl-var   103G  1.1G  102G   2% /var
/dev/vda1            947M  200M  747M  22% /boot
tmpfs                2.4G     0  2.4G   0% /run/user/0
tmpfs                2.4G     0  2.4G   0% /run/user/1000

Despite setting al the parameters, still I am not able to pass pre-introspection checks. "NO Host Matched" is found in the table.


Regards

Anirudh Gupta