diff --git a/doc/source/roles/role-ceilometerdb_size.rst b/doc/source/roles/role-ceilometerdb_size.rst
deleted file mode 100644
index 9ea910838..000000000
--- a/doc/source/roles/role-ceilometerdb_size.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-=================
-ceilometerdb_size
-=================
-
-.. ansibleautoplugin::
-   :role: roles/ceilometerdb_size
-
diff --git a/playbooks/ceilometerdb-size.yaml b/playbooks/ceilometerdb-size.yaml
deleted file mode 100644
index 6cbd67857..000000000
--- a/playbooks/ceilometerdb-size.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
----
-- hosts: undercloud
-  vars:
-    metadata:
-      name: Events Database Size Check (DEPRECATED)
-      description: |
-        The undercloud's events database can grow to a substantial
-        size if event_time_to_live is set to a negative value (infinite limit).
-
-        This validation checks event_time_to_live and fails if the variable is
-        set to a negative value or if it has no custom setting
-        (their value is -1 by default).
-
-        WARNING! This validation is considered as deprecated since Train release
-      groups:
-        - pre-deployment
-    event_ttl_check: "event_time_to_live"
-    panko_config_file: "/var/lib/config-data/puppet-generated/panko/etc/panko/panko.conf"
-  roles:
-    - ceilometerdb_size
diff --git a/releasenotes/notes/ceilometerdb-size-validation-removal-a5c42940eac102df.yaml b/releasenotes/notes/ceilometerdb-size-validation-removal-a5c42940eac102df.yaml
new file mode 100644
index 000000000..d5417120e
--- /dev/null
+++ b/releasenotes/notes/ceilometerdb-size-validation-removal-a5c42940eac102df.yaml
@@ -0,0 +1,5 @@
+---
+others:
+  - |
+    The ceilometerdb-size is deprecated since the Train cycle and it's now time
+    to retire it.
diff --git a/roles/ceilometerdb_size/defaults/main.yml b/roles/ceilometerdb_size/defaults/main.yml
deleted file mode 100644
index 37c3a19fc..000000000
--- a/roles/ceilometerdb_size/defaults/main.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-event_ttl_check: "event_time_to_live"
-panko_config_file: "/var/lib/config-data/puppet-generated/panko/etc/panko/panko.conf"
diff --git a/roles/ceilometerdb_size/molecule/default/Dockerfile b/roles/ceilometerdb_size/molecule/default/Dockerfile
deleted file mode 100644
index e0534b4d1..000000000
--- a/roles/ceilometerdb_size/molecule/default/Dockerfile
+++ /dev/null
@@ -1,37 +0,0 @@
-# Molecule managed
-# Copyright 2019 Red Hat, Inc.
-# All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-
-{% if item.registry is defined %}
-FROM {{ item.registry.url }}/{{ item.image }}
-{% else %}
-FROM {{ item.image }}
-{% endif %}
-
-RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates && apt-get clean; \
-    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install sudo python*-devel python*-dnf bash {{ item.pkg_extras | default('') }} && dnf clean all; \
-    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python sudo yum-plugin-ovl python-setuptools bash {{ item.pkg_extras | default('') }} && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
-    elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python sudo bash python-xml {{ item.pkg_extras | default('') }} && zypper clean -a; \
-    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates {{ item.pkg_extras | default('') }}; \
-    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python sudo bash ca-certificates {{ item.pkg_extras | default('') }} && xbps-remove -O; fi
-
-{% for pkg in item.easy_install | default([]) %}
-# install pip for centos where there is no python-pip rpm in default repos
-RUN easy_install {{ pkg }}
-{% endfor %}
-
-
-CMD ["sh", "-c", "while true; do sleep 10000; done"]
diff --git a/roles/ceilometerdb_size/molecule/default/converge.yml b/roles/ceilometerdb_size/molecule/default/converge.yml
deleted file mode 100644
index 6c61a39a2..000000000
--- a/roles/ceilometerdb_size/molecule/default/converge.yml
+++ /dev/null
@@ -1,26 +0,0 @@
----
-# Copyright 2019 Red Hat, Inc.
-# All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-
-- name: Converge
-  hosts: all
-  gather_facts: false
-
-  tasks:
-    - name: Warn developers about the lack of molecule testing
-      fail:
-        msg: >-
-          This role needs molecule tests!
diff --git a/roles/ceilometerdb_size/molecule/default/molecule.yml b/roles/ceilometerdb_size/molecule/default/molecule.yml
deleted file mode 100644
index d4dfe7fd9..000000000
--- a/roles/ceilometerdb_size/molecule/default/molecule.yml
+++ /dev/null
@@ -1,48 +0,0 @@
----
-driver:
-  name: podman
-
-log: true
-
-platforms:
-  - name: ubi8
-    hostname: ubi8
-    image: ubi8/ubi-init
-    registry:
-      url: registry.access.redhat.com
-    dockerfile: Dockerfile
-    pkg_extras: python*-setuptools ruby python*-pyyaml
-    volumes:
-      - /etc/ci/mirror_info.sh:/etc/ci/mirror_info.sh:ro
-      - /etc/pki/rpm-gpg:/etc/pki/rpm-gpg
-      - /opt/yum.repos.d:/etc/yum.repos.d:rw
-    environment: &env
-      http_proxy: "{{ lookup('env', 'http_proxy') }}"
-      https_proxy: "{{ lookup('env', 'https_proxy') }}"
-    ulimits: &ulimit
-      - host
-
-provisioner:
-  name: ansible
-  inventory:
-    hosts:
-      all:
-        hosts:
-          ubi8:
-            ansible_python_interpreter: /usr/bin/python3
-  log: true
-  env:
-    ANSIBLE_STDOUT_CALLBACK: yaml
-    ANSIBLE_LIBRARY: "${ANSIBLE_LIBRARY:-/usr/share/ansible/plugins/modules}"
-
-scenario:
-  test_sequence:
-    - destroy
-    - create
-    - prepare
-    - converge
-    - verify
-    - destroy
-
-verifier:
-  name: testinfra
diff --git a/roles/ceilometerdb_size/tasks/main.yml b/roles/ceilometerdb_size/tasks/main.yml
deleted file mode 100644
index 4577141a3..000000000
--- a/roles/ceilometerdb_size/tasks/main.yml
+++ /dev/null
@@ -1,42 +0,0 @@
----
-- name: Deprecation WARNING
-  warn:
-    msg: >-
-      Panko has been deprecated since the Train Release.
-      The 'ceilometerdb-size' validation is now considered as deprecated too.
-
-- name: Ensure we get needed facts
-  setup:
-    gather_subset:
-      - '!all'
-      - '!any'
-      - '!min'
-      - env
-
-- name: Check if telemetry services are enabled
-  validations_read_ini:
-    path: "{{ ansible_env.HOME }}/undercloud.conf"
-    section: DEFAULT
-    key: enable_telemetry
-  register: enable_telemetry
-  become: true
-
-- name: End play if telemetry is not enabled
-  meta: end_play
-  when: not enable_telemetry.value|bool
-
-- name: Get event ttl from panko configuration file
-  become: true
-  validations_read_ini:
-    path: "{{ panko_config_file }}"
-    section: database
-    key: "{{ event_ttl_check }}"
-    ignore_missing_file: true
-  register: event_check_result
-
-- name: Fail if event_ttl_check is set to -1
-  fail:
-    msg: >-
-      '{{ panko_config_file }}[database]/{{ event_ttl_check }}' is
-      set to -1 or not set
-  when: event_check_result.value|int|default(-1) < 0
diff --git a/roles/ceilometerdb_size/vars/main.yml b/roles/ceilometerdb_size/vars/main.yml
deleted file mode 100644
index 1b56ccad0..000000000
--- a/roles/ceilometerdb_size/vars/main.yml
+++ /dev/null
@@ -1,12 +0,0 @@
----
-metadata:
-  name: Events Database Size Check
-  description: >
-    The undercloud's events database can grow to a substantial
-    size if event_time_to_live is set to a negative value (infinite limit).
-
-    This validation checks event_time_to_live and fails if the variable is
-    set to a negative value or if it has no custom setting
-    (their value is -1 by default).
-  groups:
-    - pre-deployment
diff --git a/zuul.d/molecule.yaml b/zuul.d/molecule.yaml
index e1fd8b486..a50dfc82a 100644
--- a/zuul.d/molecule.yaml
+++ b/zuul.d/molecule.yaml
@@ -52,14 +52,6 @@
     vars:
       tripleo_validations_role_name: collect_flavors_and_verify_profiles
     voting: false
-- job:
-    files:
-    - ^roles/ceilometerdb_size/.*
-    name: tripleo-validations-centos-8-molecule-ceilometerdb_size
-    parent: tripleo-validations-centos-8-base
-    vars:
-      tripleo_validations_role_name: ceilometerdb_size
-    voting: false
 - job:
     files:
     - ^roles/neutron_sanity_check/.*