diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 8763babfb5..5337f3c81e 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -152,7 +152,14 @@ docker_common_options:
 # Dimensions options
 ####################
 # Dimension options for Docker Containers
-default_container_dimensions: {}
+# NOTE(mnasiadka): Lower 1073741816 nofile limit on EL9 (RHEL9/CentOS Stream 9/Rocky Linux 9)
+#                  fixes at least rabbitmq and mariadb
+default_container_dimensions: "{{ default_container_dimensions_el9 if ansible_facts.os_family == 'RedHat' else '{}' }}"
+default_container_dimensions_el9:
+  ulimits:
+    nofile:
+      soft: 1048576
+      hard: 1048576
 
 #####################
 # Healthcheck options
diff --git a/ansible/roles/openvswitch/defaults/main.yml b/ansible/roles/openvswitch/defaults/main.yml
index 41ab580cfa..ba765f0499 100644
--- a/ansible/roles/openvswitch/defaults/main.yml
+++ b/ansible/roles/openvswitch/defaults/main.yml
@@ -54,7 +54,7 @@ openvswitch_db_enable_healthchecks: "{{ enable_container_healthchecks }}"
 openvswitch_db_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
 openvswitch_db_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
 openvswitch_db_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
-openvswitch_db_healthcheck_test: ["CMD-SHELL", "healthcheck_socket ovsdb-server /run/openvswitch/db.sock"]
+openvswitch_db_healthcheck_test: ["CMD-SHELL", "ovsdb-client list-dbs"]
 openvswitch_db_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
 openvswitch_db_healthcheck:
   interval: "{{ openvswitch_db_healthcheck_interval }}"
diff --git a/ansible/roles/prechecks/vars/main.yml b/ansible/roles/prechecks/vars/main.yml
index a2bd800fce..752d5ac8d7 100644
--- a/ansible/roles/prechecks/vars/main.yml
+++ b/ansible/roles/prechecks/vars/main.yml
@@ -10,15 +10,15 @@ ansible_version_max: '2.12'
 # for that distribution.
 host_os_distributions:
   CentOS:
-    - "8"
+    - "9"
   Debian:
     - "bullseye"
   openEuler:
     - "22.03"
   RHEL:
-    - "8"
+    - "9"
   Rocky:
-    - "8"
+    - "9"
   Ubuntu:
     - "focal"
     - "jammy"
diff --git a/roles/cephadm/tasks/pkg_redhat.yml b/roles/cephadm/tasks/pkg_redhat.yml
index b1d98b3bd2..354cd5e5f9 100644
--- a/roles/cephadm/tasks/pkg_redhat.yml
+++ b/roles/cephadm/tasks/pkg_redhat.yml
@@ -6,6 +6,12 @@
     recurse: yes
   become: True
 
+- name: Install centos-release-ceph
+  dnf:
+    name: "centos-release-ceph-{{ cephadm_ceph_release }}"
+  become: True
+  when: cephadm_use_package_from_distribution
+
 - name: Enable Ceph base yum repository
   yum_repository:
     name: "{{ item.shortname }}"
@@ -14,3 +20,4 @@
     gpgkey: "{{ cephadm_ceph_rpm_gpg_key }}"
   loop: "{{ cephadm_ceph_rpm_repos }}"
   become: True
+  when: not cephadm_use_package_from_distribution
diff --git a/tests/pre.yml b/tests/pre.yml
index a15836261a..f3d6092c8b 100644
--- a/tests/pre.yml
+++ b/tests/pre.yml
@@ -41,14 +41,27 @@
   tasks:
     # NOTE(yoctozepto): we use gawk to add time to each logged line
     # outside of Ansible (e.g. for init-runonce)
-    - name: Install gawk and Python modules
-      package:
+    - name: Install gawk and Python modules (Debian/Ubuntu)
+      apt:
         name:
           - gawk
           - python3-pip
           - python3-setuptools
           - python3-wheel
       become: true
+      when: ansible_facts.os_family == 'Debian'
+
+    # NOTE(mnasiadka): python3-wheel is in crb repo for EL9
+    - name: Install gawk and Python modules (RedHat)
+      dnf:
+        enablerepo: "crb"
+        name:
+          - gawk
+          - python3-pip
+          - python3-setuptools
+          - python3-wheel
+      become: true
+      when: ansible_facts.os_family == 'RedHat'
 
     - name: Ensure /tmp/logs/ dir
       file:
diff --git a/tests/run-hashi-vault.yml b/tests/run-hashi-vault.yml
index 691cf59e1e..136951e90c 100644
--- a/tests/run-hashi-vault.yml
+++ b/tests/run-hashi-vault.yml
@@ -21,6 +21,11 @@
         mode: 0777
       become: true
 
+    - name: ensure python3-pip exists
+      package:
+        name: python3-pip
+      become: true
+
     # NOTE(mgoddard): We need a recent pip to install the latest cryptography
     # library. See https://github.com/pyca/cryptography/issues/5753
     - name: install pip 19.1.1+
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 8753f560ce..378055f6c5 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -1,8 +1,9 @@
 ---
 - job:
-    name: kolla-ansible-centos8s-source
+    name: kolla-ansible-centos9s-source
     parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-centos9s
+    voting: false
     vars:
       base_distro: centos
       tls_enabled: true
@@ -34,10 +35,9 @@
       tls_enabled: true
 
 - job:
-    name: kolla-ansible-rocky8-source
+    name: kolla-ansible-rocky9-source
     parent: kolla-ansible-base
-    nodeset: kolla-ansible-rocky-8
-    voting: false
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
       tls_enabled: true
@@ -51,9 +51,9 @@
       tls_enabled: true
 
 - job:
-    name: kolla-ansible-centos8s-source-kvm
+    name: kolla-ansible-rocky9-source-kvm
     parent: kolla-ansible-kvm-base
-    nodeset: kolla-ansible-centos8s-nested-virt
+    nodeset: kolla-ansible-rocky9-nested-virt
     vars:
       base_distro: centos
 
@@ -65,9 +65,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-multinode-ipv6
+    name: kolla-ansible-rocky9-source-multinode-ipv6
     parent: kolla-ansible-ipv6-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
@@ -79,12 +79,13 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-cephadm
+    name: kolla-ansible-rocky9-source-cephadm
     parent: kolla-ansible-cephadm-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     timeout: 9000
     vars:
       base_distro: centos
+      cephadm_use_package_from_distribution: true
 
 - job:
     name: kolla-ansible-ubuntu-source-cephadm
@@ -96,9 +97,9 @@
       cephadm_use_package_from_distribution: true
 
 - job:
-    name: kolla-ansible-centos8s-source-mariadb
+    name: kolla-ansible-rocky9-source-mariadb
     parent: kolla-ansible-mariadb-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
@@ -110,9 +111,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-upgrade
+    name: kolla-ansible-rocky9-source-upgrade
     parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     timeout: 9000
     vars:
       base_distro: centos
@@ -159,9 +160,9 @@
       tls_enabled: true
 
 - job:
-    name: kolla-ansible-centos8s-source-upgrade-cephadm
+    name: kolla-ansible-rocky9-source-upgrade-cephadm
     parent: kolla-ansible-cephadm-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     timeout: 9000
     vars:
       base_distro: centos
@@ -179,9 +180,9 @@
       is_upgrade: yes
 
 - job:
-    name: kolla-ansible-centos8s-source-upgrade-ovn
+    name: kolla-ansible-rocky9-source-upgrade-ovn
     parent: kolla-ansible-ovn-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     timeout: 9000
     vars:
       base_distro: centos
@@ -199,9 +200,9 @@
       is_upgrade: yes
 
 - job:
-    name: kolla-ansible-centos8s-source-bifrost
+    name: kolla-ansible-rocky9-source-bifrost
     parent: kolla-ansible-bifrost-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -213,9 +214,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-zun
+    name: kolla-ansible-rocky9-source-zun
     parent: kolla-ansible-zun-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
@@ -234,9 +235,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-swift
+    name: kolla-ansible-rocky9-source-swift
     parent: kolla-ansible-swift-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
@@ -248,9 +249,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-swift-upgrade
+    name: kolla-ansible-rocky9-source-swift-upgrade
     parent: kolla-ansible-swift-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     timeout: 10800
     vars:
       base_distro: centos
@@ -268,16 +269,16 @@
       is_upgrade: yes
 
 - job:
-    name: kolla-ansible-centos8s-source-scenario-nfv
+    name: kolla-ansible-rocky9-source-scenario-nfv
     parent: kolla-ansible-scenario-nfv-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
 - job:
-    name: kolla-ansible-centos8s-source-ironic
+    name: kolla-ansible-rocky9-source-ironic
     parent: kolla-ansible-ironic-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -296,9 +297,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-magnum
+    name: kolla-ansible-rocky9-source-magnum
     parent: kolla-ansible-magnum-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -310,9 +311,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-octavia
+    name: kolla-ansible-rocky9-source-octavia
     parent: kolla-ansible-octavia-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -331,16 +332,16 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-masakari
+    name: kolla-ansible-rocky9-source-masakari
     parent: kolla-ansible-masakari-base
-    nodeset: kolla-ansible-centos8s-masakari
+    nodeset: kolla-ansible-rocky9-masakari
     vars:
       base_distro: centos
 
 - job:
-    name: kolla-ansible-centos8s-source-monasca
+    name: kolla-ansible-rocky9-source-monasca
     parent: kolla-ansible-monasca-base
-    nodeset: kolla-ansible-centos8s-multi-monasca
+    nodeset: kolla-ansible-rocky9-multi-monasca
     vars:
       base_distro: centos
 
@@ -352,16 +353,16 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-cells
+    name: kolla-ansible-rocky9-source-cells
     parent: kolla-ansible-cells-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
 - job:
-    name: kolla-ansible-centos8s-source-ovn
+    name: kolla-ansible-rocky9-source-ovn
     parent: kolla-ansible-ovn-base
-    nodeset: kolla-ansible-centos8s-multi
+    nodeset: kolla-ansible-rocky9-multi
     vars:
       base_distro: centos
 
@@ -373,9 +374,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-prometheus-efk
+    name: kolla-ansible-rocky9-source-prometheus-efk
     parent: kolla-ansible-prometheus-efk-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -387,9 +388,9 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-source-venus
+    name: kolla-ansible-rocky9-source-venus
     parent: kolla-ansible-venus-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
 
@@ -401,8 +402,8 @@
       base_distro: ubuntu
 
 - job:
-    name: kolla-ansible-centos8s-hashi-vault
+    name: kolla-ansible-rocky9-hashi-vault
     parent: kolla-ansible-hashi-vault-base
-    nodeset: kolla-ansible-centos8s
+    nodeset: kolla-ansible-rocky9
     vars:
       base_distro: centos
diff --git a/zuul.d/nodesets.yaml b/zuul.d/nodesets.yaml
index 1779ff2b34..dc25a111a0 100644
--- a/zuul.d/nodesets.yaml
+++ b/zuul.d/nodesets.yaml
@@ -1,9 +1,9 @@
 ---
 - nodeset:
-    name: kolla-ansible-centos8s
+    name: kolla-ansible-centos9s
     nodes:
       - name: primary
-        label: centos-8-stream
+        label: centos-9-stream
 
 - nodeset:
     name: kolla-ansible-debian-bullseye
@@ -46,10 +46,10 @@
         label: openEuler-22-03-LTS
 
 - nodeset:
-    name: kolla-ansible-rocky-8
+    name: kolla-ansible-rocky9
     nodes:
       - name: primary
-        label: rockylinux-8
+        label: rockylinux-9
 
 - nodeset:
     name: kolla-ansible-focal-multi
@@ -72,14 +72,14 @@
         label: ubuntu-jammy
 
 - nodeset:
-    name: kolla-ansible-centos8s-multi
+    name: kolla-ansible-rocky9-multi
     nodes:
       - name: primary
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary1
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary2
-        label: centos-8-stream
+        label: rockylinux-9
 
 - nodeset:
     name: kolla-ansible-jammy-nested-virt
@@ -88,26 +88,26 @@
         label: nested-virt-ubuntu-jammy
 
 - nodeset:
-    name: kolla-ansible-centos8s-nested-virt
+    name: kolla-ansible-rocky9-nested-virt
     nodes:
       - name: primary
-        label: nested-virt-centos-8-stream
+        label: nested-virt-centos-9-stream
 
 - nodeset:
-    name: kolla-ansible-centos8s-multi-monasca
+    name: kolla-ansible-rocky9-multi-monasca
     nodes:
       - name: primary
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary1
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary2
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary3
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary4
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary5
-        label: centos-8-stream
+        label: rockylinux-9
 
 - nodeset:
     name: kolla-ansible-jammy-masakari
@@ -122,13 +122,13 @@
         label: ubuntu-jammy
 
 - nodeset:
-    name: kolla-ansible-centos8s-masakari
+    name: kolla-ansible-rocky9-masakari
     nodes:
       - name: primary
-        label: centos-8-stream
+        label: rockylinux-9
       - name: secondary
-        label: centos-8-stream
+        label: rockylinux-9
       - name: ternary1
-        label: centos-8-stream
+        label: rockylinux-9
       - name: ternary2
-        label: centos-8-stream
+        label: rockylinux-9
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 89a071ada5..5f3dbd0f2b 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -11,67 +11,66 @@
       - periodic-stable-jobs
     check:
       jobs:
-        # - kolla-ansible-centos8s-source
+        - kolla-ansible-centos9s-source
         - kolla-ansible-debian-source
         - kolla-ansible-openeuler-source
-        # - kolla-ansible-rocky8-source
+        - kolla-ansible-rocky9-source
         - kolla-ansible-ubuntu-source
-        # - kolla-ansible-centos8s-source-kvm
+        - kolla-ansible-rocky9-source-kvm
         - kolla-ansible-ubuntu-source-kvm
-        # - kolla-ansible-centos8s-source-multinode-ipv6
+        - kolla-ansible-rocky9-source-multinode-ipv6
         - kolla-ansible-ubuntu-source-multinode-ipv6
-        # - kolla-ansible-centos8s-source-bifrost
+        - kolla-ansible-rocky9-source-bifrost
         - kolla-ansible-ubuntu-source-bifrost
-        # - kolla-ansible-centos8s-source-zun
+        - kolla-ansible-rocky9-source-zun
         - kolla-ansible-debian-source-zun
         - kolla-ansible-ubuntu-source-zun
-        # - kolla-ansible-centos8s-source-swift
+        - kolla-ansible-rocky9-source-swift
         - kolla-ansible-ubuntu-source-swift
-        # - kolla-ansible-centos8s-source-scenario-nfv
-        # - kolla-ansible-centos8s-source-magnum
+        - kolla-ansible-rocky9-source-scenario-nfv
+        - kolla-ansible-rocky9-source-magnum
         - kolla-ansible-ubuntu-source-magnum
-        # - kolla-ansible-centos8s-source-octavia
+        - kolla-ansible-rocky9-source-octavia
         - kolla-ansible-ubuntu-source-octavia
-        # - kolla-ansible-centos8s-source-masakari
+        - kolla-ansible-rocky9-source-masakari
         - kolla-ansible-ubuntu-source-masakari
-        # - kolla-ansible-centos8s-source-ironic
+        - kolla-ansible-rocky9-source-ironic
         - kolla-ansible-debian-source-ironic
         - kolla-ansible-ubuntu-source-ironic
-        # - kolla-ansible-centos8s-source-upgrade
+        # - kolla-ansible-rocky9-source-upgrade
         - kolla-ansible-debian-source-upgrade
         - kolla-ansible-ubuntu-source-upgrade
         - kolla-ansible-ubuntu-binary-upgrade
-        # - kolla-ansible-centos8s-source-cells
         - kolla-ansible-ubuntu-source-cells
-        # - kolla-ansible-centos8s-source-mariadb
+        - kolla-ansible-rocky9-source-cells
+        - kolla-ansible-rocky9-source-mariadb
         - kolla-ansible-ubuntu-source-mariadb
-        # - kolla-ansible-centos8s-source-ovn
+        - kolla-ansible-rocky9-source-ovn
         - kolla-ansible-ubuntu-source-ovn
-        # - kolla-ansible-centos8s-source-upgrade-ovn
+        # - kolla-ansible-rocky9-source-upgrade-ovn
         - kolla-ansible-ubuntu-source-upgrade-ovn
-        # - kolla-ansible-centos8s-source-prometheus-efk
+        - kolla-ansible-rocky9-source-prometheus-efk
         - kolla-ansible-ubuntu-source-prometheus-efk
-        # - kolla-ansible-centos8s-source-venus
+        - kolla-ansible-rocky9-source-venus
         - kolla-ansible-ubuntu-source-venus
-        # - kolla-ansible-centos8s-source-monasca
-        # - kolla-ansible-centos8s-source-cephadm
+        - kolla-ansible-rocky9-source-cephadm
         - kolla-ansible-ubuntu-source-cephadm
-        # - kolla-ansible-centos8s-source-upgrade-cephadm
+        # - kolla-ansible-rocky9-source-upgrade-cephadm
         - kolla-ansible-ubuntu-source-upgrade-cephadm
-        # - kolla-ansible-centos8s-hashi-vault
+        - kolla-ansible-rocky9-hashi-vault
     check-arm64:
       jobs:
         - kolla-ansible-debian-source-aarch64
         - kolla-ansible-debian-source-upgrade-aarch64
     gate:
       jobs:
-        # - kolla-ansible-centos8s-source
-        # - kolla-ansible-centos8s-source-upgrade
+        # - kolla-ansible-rocky9-source-upgrade
         - kolla-ansible-debian-source
         - kolla-ansible-debian-source-upgrade
+        - kolla-ansible-rocky9-source
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-source-upgrade
     experimental:
       jobs:
-        # - kolla-ansible-centos8s-source-swift-upgrade
+        - kolla-ansible-rocky9-source-swift-upgrade
         - kolla-ansible-ubuntu-source-swift-upgrade