diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 57092c6894..2f2b66dfa0 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -1,12 +1,4 @@
 ---
-- job:
-    name: kolla-ansible-centos-source
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source
     parent: kolla-ansible-base
@@ -52,15 +44,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-binary
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos
-    voting: false
-    vars:
-      base_distro: centos
-      install_type: binary
-
 - job:
     name: kolla-ansible-centos8-binary
     parent: kolla-ansible-base
@@ -79,15 +62,6 @@
       base_distro: ubuntu
       install_type: binary
 
-- job:
-    name: kolla-ansible-centos-source-ceph-ansible
-    parent: kolla-ansible-ceph-ansible-base
-    nodeset: kolla-ansible-centos-multi
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-ceph-ansible
     parent: kolla-ansible-ceph-ansible-base
@@ -106,14 +80,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-mariadb
-    parent: kolla-ansible-mariadb-base
-    nodeset: kolla-ansible-centos-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-mariadb
     parent: kolla-ansible-mariadb-base
@@ -130,16 +96,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-upgrade
-    parent: kolla-ansible-base
-    nodeset: kolla-ansible-centos
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-      is_upgrade: yes
-
 - job:
     name: kolla-ansible-centos8-source-upgrade
     parent: kolla-ansible-base
@@ -170,23 +126,6 @@
       install_type: source
       is_upgrade: yes
 
-- job:
-    name: kolla-ansible-centos-source-upgrade-ceph-ansible
-    parent: kolla-ansible-ceph-ansible-base
-    nodeset: kolla-ansible-centos-multi
-    timeout: 9000
-    vars:
-      base_distro: centos
-      install_type: source
-      is_upgrade: yes
-
-- job:
-    name: kolla-ansible-bifrost-centos-source
-    parent: kolla-ansible-bifrost-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-
 - job:
     name: kolla-ansible-centos8-source-bifrost
     parent: kolla-ansible-bifrost-base
@@ -194,14 +133,6 @@
     vars:
       base_distro: centos
 
-- job:
-    name: kolla-ansible-centos-source-zun
-    parent: kolla-ansible-zun-base
-    nodeset: kolla-ansible-centos-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-zun
     parent: kolla-ansible-zun-base
@@ -218,14 +149,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-swift
-    parent: kolla-ansible-swift-base
-    nodeset: kolla-ansible-centos-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-swift
     parent: kolla-ansible-swift-base
@@ -242,14 +165,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-scenario-nfv
-    parent: kolla-ansible-scenario-nfv-base
-    nodeset: kolla-ansible-centos-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-scenario-nfv
     parent: kolla-ansible-scenario-nfv-base
@@ -258,14 +173,6 @@
       base_distro: centos
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-ironic
-    parent: kolla-ansible-ironic-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-ironic
     parent: kolla-ansible-ironic-base
@@ -274,14 +181,6 @@
       base_distro: centos
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-binary-ironic
-    parent: kolla-ansible-ironic-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-      install_type: binary
-
 - job:
     name: kolla-ansible-centos8-binary-ironic
     parent: kolla-ansible-ironic-base
@@ -316,14 +215,6 @@
       base_distro: ubuntu
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-masakari
-    parent: kolla-ansible-masakari-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-masakari
     parent: kolla-ansible-masakari-base
@@ -332,14 +223,6 @@
       base_distro: centos
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-cells
-    parent: kolla-ansible-cells-base
-    nodeset: kolla-ansible-centos-multi
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-centos8-source-cells
     parent: kolla-ansible-cells-base
@@ -348,14 +231,6 @@
       base_distro: centos
       install_type: source
 
-- job:
-    name: kolla-ansible-centos-source-linuxbridge
-    parent: kolla-ansible-linuxbridge-base
-    nodeset: kolla-ansible-centos
-    vars:
-      base_distro: centos
-      install_type: source
-
 - job:
     name: kolla-ansible-ubuntu-source-linuxbridge
     parent: kolla-ansible-linuxbridge-base
diff --git a/zuul.d/nodesets.yaml b/zuul.d/nodesets.yaml
index 588f24fc1c..d6f573b025 100644
--- a/zuul.d/nodesets.yaml
+++ b/zuul.d/nodesets.yaml
@@ -1,10 +1,4 @@
 ---
-- nodeset:
-    name: kolla-ansible-centos
-    nodes:
-      - name: primary
-        label: centos-7
-
 - nodeset:
     name: kolla-ansible-centos8
     nodes:
@@ -71,24 +65,6 @@
           - secondary1
           - secondary2
 
-- nodeset:
-    name: kolla-ansible-centos-multi
-    nodes:
-      - name: primary
-        label: centos-7
-      - name: secondary1
-        label: centos-7
-      - name: secondary2
-        label: centos-7
-    groups:
-      - name: switch
-        nodes:
-          - primary
-      - name: peers
-        nodes:
-          - secondary1
-          - secondary2
-
 - nodeset:
     name: kolla-ansible-centos8-multi
     nodes:
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 5f714f15aa..a060e4a051 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -10,48 +10,33 @@
       - periodic-stable-jobs
     check:
       jobs:
-        - kolla-ansible-centos-source
         - kolla-ansible-centos8-source
         - kolla-ansible-debian-source
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-source-multinode-ipv6
-        - kolla-ansible-bifrost-centos-source
         # FIXME(mgoddard): Bifrost CentOS 8 support in progress.
         # - kolla-ansible-centos8-source-bifrost
-        - kolla-ansible-centos-source-zun
         - kolla-ansible-centos8-source-zun
         - kolla-ansible-ubuntu-source-zun
-        - kolla-ansible-centos-source-swift
         - kolla-ansible-centos8-source-swift
         - kolla-ansible-ubuntu-source-swift
-        - kolla-ansible-centos-source-scenario-nfv
         - kolla-ansible-centos8-source-scenario-nfv
         - kolla-ansible-ubuntu-source-masakari
-        - kolla-ansible-centos-source-masakari
         # FIXME(mgoddard): Masakari CentOS 8 job.
         # - kolla-ansible-centos8-source-masakari
-        - kolla-ansible-centos-source-ironic
         - kolla-ansible-centos8-source-ironic
-        - kolla-ansible-centos-binary-ironic
         - kolla-ansible-centos8-binary-ironic
         - kolla-ansible-ubuntu-source-ironic
-        - kolla-ansible-centos-source-upgrade
         - kolla-ansible-centos8-source-upgrade
         - kolla-ansible-ubuntu-source-upgrade
-        - kolla-ansible-centos-binary
         - kolla-ansible-centos8-binary
         - kolla-ansible-ubuntu-binary
-        - kolla-ansible-centos-source-cells
         - kolla-ansible-centos8-source-cells
-        - kolla-ansible-centos-source-mariadb
         - kolla-ansible-centos8-source-mariadb
         - kolla-ansible-ubuntu-source-mariadb
-        - kolla-ansible-centos-source-ceph-ansible
         - kolla-ansible-centos8-source-ceph-ansible
         - kolla-ansible-ubuntu-source-ceph-ansible
-        - kolla-ansible-centos-source-upgrade-ceph-ansible
         - kolla-ansible-ubuntu-source-upgrade-ceph-ansible
-        - kolla-ansible-centos-source-linuxbridge
         - kolla-ansible-ubuntu-source-linuxbridge
     check-arm64:
       jobs:
@@ -59,23 +44,13 @@
     gate:
       queue: kolla
       jobs:
-        - kolla-ansible-centos-source
         - kolla-ansible-centos8-source
         - kolla-ansible-ubuntu-source
-        - kolla-ansible-centos-source-upgrade
         - kolla-ansible-ubuntu-source-upgrade
     periodic:
       jobs:
-        - kolla-ansible-bifrost-centos-source
-        - kolla-ansible-centos-source-zun
         - kolla-ansible-ubuntu-source-zun
         - kolla-ansible-ubuntu-source-masakari
-        - kolla-ansible-centos-source-masakari
-        - kolla-ansible-centos-source-scenario-nfv
-        - kolla-ansible-centos-source-ironic
-        - kolla-ansible-centos-binary-ironic
         - kolla-ansible-ubuntu-source-ironic
-        - kolla-ansible-centos-source-upgrade
         - kolla-ansible-ubuntu-source-upgrade
-        - kolla-ansible-centos-source-mariadb
         - kolla-ansible-ubuntu-source-mariadb