Hi Team, I tried installing Undercloud using the below link: https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/deployme... 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-intro... 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¶ <https://docs.openstack.org/tripleo-validations/wallaby/validations-pre-introspection-details.html#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. - ctlplane_iprange_min_size: 20 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