diff --git a/doc/source/user/support-matrix.rst b/doc/source/user/support-matrix.rst
index a866eccc94..94fa40b4a9 100644
--- a/doc/source/user/support-matrix.rst
+++ b/doc/source/user/support-matrix.rst
@@ -27,7 +27,7 @@ Kolla Ansible supports the following host Operating Systems (OS):
    release onwards. The Yoga supports both CentOS Stream 8 and Rocky Linux 9,
    and provides a route for migration.
 
-* CentOS Stream 8
+* CentOS Stream 8 (untested since EOL of CentOS Stream 8)
 * Debian Bullseye (11)
 * openEuler 20.03 LTS SP2
 * RHEL 8 (deprecated)
@@ -42,7 +42,7 @@ Supported container images
 For best results, the base container image distribution should match the host
 OS distribution. The following values are supported for ``kolla_base_distro``:
 
-* ``centos``
+* ``centos`` (untested since EOL of CentOS Stream 8)
 * ``debian``
 * ``rhel`` (deprecated)
 * ``ubuntu``
diff --git a/releasenotes/notes/drop-centos8s-776789d8959d334c.yaml b/releasenotes/notes/drop-centos8s-776789d8959d334c.yaml
new file mode 100644
index 0000000000..18210a1fc3
--- /dev/null
+++ b/releasenotes/notes/drop-centos8s-776789d8959d334c.yaml
@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    CentOS Stream 8 is not supported anymore.
+    Try `migration <https://docs.openstack.org/kolla-ansible/yoga/user/rocky-linux-9.html>`__ to Rocky Linux 9.
+upgrade:
+  - |
+    CentOS Stream 8 is not supported anymore.
+    Try `migration <https://docs.openstack.org/kolla-ansible/yoga/user/rocky-linux-9.html>`__ to Rocky Linux 9.
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index ab466971b1..5f68c24094 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -1,13 +1,4 @@
 ---
-- job:
-    name: kolla-ansible-centos8s-source
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-      tls_enabled: true
-
 - job:
     name: kolla-ansible-centos9s-source
     parent: kolla-ansible-base
@@ -75,14 +66,6 @@
       install_type: source
       tls_enabled: true
 
-- job:
-    name: kolla-ansible-centos8s-source-kvm
-    parent: kolla-ansible-kvm-base
-    nodeset: kolla-ansible-centos8s-nested-virt
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-kvm
     parent: kolla-ansible-kvm-base
@@ -99,14 +82,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-multinode-ipv6
-    parent: kolla-ansible-ipv6-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-multinode-ipv6
     parent: kolla-ansible-ipv6-base
@@ -123,15 +98,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-binary
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos8s
-    voting: false
-    vars:
-      base_distro: centos
-      install_type: binary
-
 - job:
     name: kolla-ansible-ubuntu-binary-focal
     parent: kolla-ansible-base
@@ -141,15 +107,6 @@
       base_distro: ubuntu
       install_type: binary
 
-- job:
-    name: kolla-ansible-centos8s-source-cephadm
-    parent: kolla-ansible-cephadm-base
-    nodeset: kolla-ansible-centos8s-multi
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-cephadm
     parent: kolla-ansible-cephadm-base
@@ -168,14 +125,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-mariadb
-    parent: kolla-ansible-mariadb-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-mariadb
     parent: kolla-ansible-mariadb-base
@@ -192,17 +141,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-upgrade
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos8s
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-      is_upgrade: yes
-      tls_enabled: true
-
 - job:
     name: kolla-ansible-debian-source-upgrade
     parent: kolla-ansible-base
@@ -230,16 +168,6 @@
       is_upgrade: yes
       tls_enabled: true
 
-- job:
-    name: kolla-ansible-centos8s-source-upgrade-cephadm
-    parent: kolla-ansible-cephadm-base
-    nodeset: kolla-ansible-centos8s-multi
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-      is_upgrade: yes
-
 - job:
     name: kolla-ansible-ubuntu-source-upgrade-cephadm-focal
     parent: kolla-ansible-cephadm-base
@@ -250,13 +178,6 @@
       install_type: source
       is_upgrade: yes
 
-- job:
-    name: kolla-ansible-centos8s-source-bifrost
-    parent: kolla-ansible-bifrost-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-
 - job:
     name: kolla-ansible-rocky9-source-bifrost
     parent: kolla-ansible-bifrost-base
@@ -271,14 +192,6 @@
     vars:
       base_distro: ubuntu
 
-- job:
-    name: kolla-ansible-centos8s-source-zun
-    parent: kolla-ansible-zun-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-zun
     parent: kolla-ansible-zun-base
@@ -311,14 +224,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-swift
-    parent: kolla-ansible-swift-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-swift
     parent: kolla-ansible-swift-base
@@ -335,16 +240,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-swift-upgrade
-    parent: kolla-ansible-swift-base
-    nodeset: kolla-ansible-centos8s-multi
-    timeout: 10800
-    vars:
-      base_distro: centos
-      install_type: source
-      is_upgrade: yes
-
 - job:
     name: kolla-ansible-ubuntu-source-swift-upgrade-focal
     parent: kolla-ansible-swift-base
@@ -355,14 +250,6 @@
       install_type: source
       is_upgrade: yes
 
-- job:
-    name: kolla-ansible-centos8s-source-scenario-nfv
-    parent: kolla-ansible-scenario-nfv-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-scenario-nfv
     parent: kolla-ansible-scenario-nfv-base
@@ -371,14 +258,6 @@
       base_distro: rocky
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-ironic
-    parent: kolla-ansible-ironic-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-ironic
     parent: kolla-ansible-ironic-base
@@ -387,14 +266,6 @@
       base_distro: rocky
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-binary-ironic
-    parent: kolla-ansible-ironic-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: binary
-
 - job:
     name: kolla-ansible-debian-source-ironic
     parent: kolla-ansible-ironic-base
@@ -421,14 +292,6 @@
       base_distro: ubuntu
       install_type: binary
 
-- job:
-    name: kolla-ansible-centos8s-source-magnum
-    parent: kolla-ansible-magnum-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-magnum
     parent: kolla-ansible-magnum-base
@@ -445,14 +308,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-octavia
-    parent: kolla-ansible-octavia-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-octavia
     parent: kolla-ansible-octavia-base
@@ -477,14 +332,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-masakari
-    parent: kolla-ansible-masakari-base
-    nodeset: kolla-ansible-centos8s-masakari
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-masakari
     parent: kolla-ansible-masakari-base
@@ -493,22 +340,6 @@
       base_distro: rocky
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-monasca
-    parent: kolla-ansible-monasca-base
-    nodeset: kolla-ansible-centos8s-multi-monasca
-    vars:
-      base_distro: centos
-      install_type: source
-
-- job:
-    name: kolla-ansible-centos8s-source-cells
-    parent: kolla-ansible-cells-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-cells
     parent: kolla-ansible-cells-base
@@ -525,14 +356,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-linuxbridge
-    parent: kolla-ansible-linuxbridge-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-linuxbridge
     parent: kolla-ansible-linuxbridge-base
@@ -541,14 +364,6 @@
       base_distro: rocky
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-ovn
-    parent: kolla-ansible-ovn-base
-    nodeset: kolla-ansible-centos8s-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-rocky9-source-ovn
     parent: kolla-ansible-ovn-base
@@ -565,31 +380,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-prometheus-efk
-    parent: kolla-ansible-prometheus-efk-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
-- job:
-    name: kolla-ansible-centos8s-source-prometheus-opensearch
-    parent: kolla-ansible-prometheus-opensearch-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
-- job:
-    name: kolla-ansible-centos8s-source-prometheus-opensearch-migration
-    parent: kolla-ansible-prometheus-efk-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-      opensearch_migration: true
-
 - job:
     name: kolla-ansible-rocky9-source-prometheus-opensearch
     parent: kolla-ansible-prometheus-opensearch-base
@@ -631,14 +421,6 @@
       base_distro: rocky
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-source-venus
-    parent: kolla-ansible-venus-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-ubuntu-source-venus-focal
     parent: kolla-ansible-venus-base
@@ -647,13 +429,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos8s-hashi-vault
-    parent: kolla-ansible-hashi-vault-base
-    nodeset: kolla-ansible-centos8s
-    vars:
-      base_distro: centos
-
 - job:
     name: kolla-ansible-rocky9-hashi-vault
     parent: kolla-ansible-hashi-vault-base
diff --git a/zuul.d/nodesets.yaml b/zuul.d/nodesets.yaml
index c9daf6b799..a0cd63cf8d 100644
--- a/zuul.d/nodesets.yaml
+++ b/zuul.d/nodesets.yaml
@@ -1,10 +1,4 @@
 ---
-- nodeset:
-    name: kolla-ansible-centos8s
-    nodes:
-      - name: primary
-        label: centos-8-stream
-
 - nodeset:
     name: kolla-ansible-centos9s
     nodes:
@@ -67,16 +61,6 @@
       - name: secondary2
         label: ubuntu-focal
 
-- nodeset:
-    name: kolla-ansible-centos8s-multi
-    nodes:
-      - name: primary
-        label: centos-8-stream
-      - name: secondary1
-        label: centos-8-stream
-      - name: secondary2
-        label: centos-8-stream
-
 - nodeset:
     name: kolla-ansible-rocky9-multi
     nodes:
@@ -93,34 +77,12 @@
       - name: primary
         label: nested-virt-ubuntu-focal
 
-- nodeset:
-    name: kolla-ansible-centos8s-nested-virt
-    nodes:
-      - name: primary
-        label: nested-virt-centos-8-stream
-
 - nodeset:
     name: kolla-ansible-rocky9-nested-virt
     nodes:
       - name: primary
         label: nested-virt-centos-9-stream
 
-- nodeset:
-    name: kolla-ansible-centos8s-multi-monasca
-    nodes:
-      - name: primary
-        label: centos-8-stream
-      - name: secondary1
-        label: centos-8-stream
-      - name: secondary2
-        label: centos-8-stream
-      - name: secondary3
-        label: centos-8-stream
-      - name: secondary4
-        label: centos-8-stream
-      - name: secondary5
-        label: centos-8-stream
-
 - nodeset:
     name: kolla-ansible-rocky9-multi-monasca
     nodes:
@@ -149,18 +111,6 @@
       - name: ternary2
         label: ubuntu-focal
 
-- nodeset:
-    name: kolla-ansible-centos8s-masakari
-    nodes:
-      - name: primary
-        label: centos-8-stream
-      - name: secondary
-        label: centos-8-stream
-      - name: ternary1
-        label: centos-8-stream
-      - name: ternary2
-        label: centos-8-stream
-
 - nodeset:
     name: kolla-ansible-rocky9-masakari
     nodes:
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 41d63e768c..765c8f8ab2 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -11,76 +11,53 @@
       - periodic-stable-jobs
     check:
       jobs:
-        - kolla-ansible-centos8s-source
         - kolla-ansible-centos9s-source
         - kolla-ansible-debian-source
         - kolla-ansible-rocky8-source
         - kolla-ansible-rocky9-source
         - kolla-ansible-ubuntu-source-focal
         - kolla-ansible-ubuntu-source-jammy
-        - kolla-ansible-centos8s-source-kvm
         - kolla-ansible-rocky9-source-kvm
         - kolla-ansible-ubuntu-source-kvm-focal
-        - kolla-ansible-centos8s-source-multinode-ipv6
         - kolla-ansible-rocky9-source-multinode-ipv6
         - kolla-ansible-ubuntu-source-multinode-ipv6-focal
-        - kolla-ansible-centos8s-source-bifrost
         - kolla-ansible-rocky9-source-bifrost
         - kolla-ansible-ubuntu-source-bifrost-focal
-        - kolla-ansible-centos8s-source-zun
         - kolla-ansible-rocky9-source-zun
         - kolla-ansible-debian-source-zun
         - kolla-ansible-ubuntu-source-zun-focal
-        - kolla-ansible-centos8s-source-swift
         - kolla-ansible-rocky9-source-swift
         - kolla-ansible-ubuntu-source-swift-focal
-        - kolla-ansible-centos8s-source-scenario-nfv
         - kolla-ansible-rocky9-source-scenario-nfv
-        - kolla-ansible-centos8s-source-magnum
         - kolla-ansible-rocky9-source-magnum
         - kolla-ansible-ubuntu-source-magnum-focal
-        - kolla-ansible-centos8s-source-octavia
         - kolla-ansible-rocky9-source-octavia
         - kolla-ansible-ubuntu-source-octavia-focal
-        - kolla-ansible-centos8s-source-masakari
         - kolla-ansible-rocky9-source-masakari
         - kolla-ansible-ubuntu-source-masakari-focal
-        - kolla-ansible-centos8s-source-ironic
         - kolla-ansible-rocky9-source-ironic
-        - kolla-ansible-centos8s-binary-ironic
         - kolla-ansible-debian-source-ironic
         - kolla-ansible-ubuntu-source-ironic-focal
-        - kolla-ansible-centos8s-binary
         - kolla-ansible-ubuntu-binary-focal
-        - kolla-ansible-centos8s-source-cells
         - kolla-ansible-rocky9-source-cells
-        - kolla-ansible-centos8s-source-mariadb
         - kolla-ansible-rocky9-source-mariadb
         - kolla-ansible-ubuntu-source-mariadb-focal
-        - kolla-ansible-centos8s-source-linuxbridge
         - kolla-ansible-rocky9-source-linuxbridge
         - kolla-ansible-ubuntu-source-linuxbridge-focal
-        - kolla-ansible-centos8s-source-ovn
         - kolla-ansible-rocky9-source-ovn
         - kolla-ansible-ubuntu-source-ovn-focal
-        - kolla-ansible-centos8s-source-prometheus-efk
         - kolla-ansible-ubuntu-source-prometheus-efk-focal
-        - kolla-ansible-centos8s-source-prometheus-opensearch
-        - kolla-ansible-centos8s-source-prometheus-opensearch-migration
         - kolla-ansible-ubuntu-source-prometheus-opensearch
         - kolla-ansible-ubuntu-source-prometheus-opensearch-migration-focal
         - kolla-ansible-rocky9-source-prometheus-opensearch
-        - kolla-ansible-centos8s-source-cephadm
         - kolla-ansible-rocky9-source-cephadm
         - kolla-ansible-ubuntu-source-cephadm-focal
-        - kolla-ansible-centos8s-hashi-vault
         - kolla-ansible-rocky9-hashi-vault
     check-arm64:
       jobs:
         - kolla-ansible-debian-source-aarch64
     gate:
       jobs:
-        - kolla-ansible-centos8s-source
         - kolla-ansible-debian-source
         - kolla-ansible-rocky9-source
         - kolla-ansible-ubuntu-source-focal