diff --git a/tools/osbuilder/Makefile b/tools/osbuilder/Makefile
index 7f0addf8fd..25effc967e 100644
--- a/tools/osbuilder/Makefile
+++ b/tools/osbuilder/Makefile
@@ -9,7 +9,7 @@ ROOTFS_BUILDER := $(MK_DIR)/rootfs-builder/rootfs.sh
 INITRD_BUILDER := $(MK_DIR)/initrd-builder/initrd_builder.sh
 IMAGE_BUILDER  := $(MK_DIR)/image-builder/image_builder.sh
 
-DISTRO                ?= centos
+DISTRO                ?= ubuntu
 BUILD_METHOD          := distro
 BUILD_METHOD_LIST     := distro dracut
 AGENT_INIT            ?= no
diff --git a/tools/osbuilder/README.md b/tools/osbuilder/README.md
index 7890b72e49..cf8c02cef8 100644
--- a/tools/osbuilder/README.md
+++ b/tools/osbuilder/README.md
@@ -80,8 +80,8 @@ filesystem components to generate an initrd.
 3. When generating an image, the initrd is extracted to obtain the base rootfs for
 the image.
 
-CentOS is the default distro for building the rootfs, to use a different one, you can set `DISTRO=<your_distro>`.
-For example `make USE_DOCKER=true DISTRO=ubuntu rootfs` will make Ubuntu rootfs using Docker.
+Ubuntu is the default distro for building the rootfs, to use a different one, you can set `DISTRO=alpine|clearlinux|debian|ubuntu`.
+For example `make USE_DOCKER=true DISTRO=alpine rootfs` will make an Alpine rootfs using Docker.
 
 ### Rootfs creation
 
@@ -209,9 +209,9 @@ of the the osbuilder distributions.
 > Note: this table is not relevant for the dracut build method, since it supports
 any Linux distribution and architecture where dracut is available.
 
-|           |Alpine            |CentOS            |Clear Linux       |Debian/Ubuntu     |Fedora            |openSUSE          |
-|--         |--                |--                |--                |--                |--                |--                |
-|**ARM64**  |:heavy_check_mark:|:heavy_check_mark:|                  |                  |:heavy_check_mark:|:heavy_check_mark:|
-|**PPC64le**|:heavy_check_mark:|:heavy_check_mark:|                  |:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|
-|**s390x**  |                  |                  |                  |:heavy_check_mark:|:heavy_check_mark:|                  |
-|**x86_64** |:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|
+|           |Alpine            |Clear Linux       |Debian/Ubuntu     |Fedora            |openSUSE          |
+|--         |--                |--                |--                |--                |--                |
+|**ARM64**  |:heavy_check_mark:|                  |                  |:heavy_check_mark:|:heavy_check_mark:|
+|**PPC64le**|:heavy_check_mark:|                  |:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|
+|**s390x**  |                  |                  |:heavy_check_mark:|:heavy_check_mark:|                  |
+|**x86_64** |:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|
diff --git a/tools/osbuilder/dockerfiles/QAT/README.md b/tools/osbuilder/dockerfiles/QAT/README.md
index 370eceb5e0..ccc96a5e44 100644
--- a/tools/osbuilder/dockerfiles/QAT/README.md
+++ b/tools/osbuilder/dockerfiles/QAT/README.md
@@ -8,7 +8,6 @@ To properly load the driver modules, systemd init must be used. It is not adequa
 to use the agent as the init. Because of this, alpine is not a valid base OS image
 to use. The following rootfs OS's have been tested with this Dockerfile.
 
-* CentOS
 * Clear Linux
 * Fedora
 * SUSE
diff --git a/tools/osbuilder/rootfs-builder/centos/Dockerfile.in b/tools/osbuilder/rootfs-builder/centos/Dockerfile.in
deleted file mode 100644
index d05436e2a9..0000000000
--- a/tools/osbuilder/rootfs-builder/centos/Dockerfile.in
+++ /dev/null
@@ -1,40 +0,0 @@
-#
-# Copyright (c) 2018 Intel Corporation
-#
-# SPDX-License-Identifier: Apache-2.0
-
-ARG IMAGE_REGISTRY=registry.centos.org
-FROM ${IMAGE_REGISTRY}/centos:@OS_VERSION@
-
-@SET_PROXY@
-
-RUN yum -y update && yum install -y \
-    autoconf \
-    automake \
-    binutils \
-    chrony \
-    coreutils \
-    curl \
-    gcc \
-    gcc-c++ \
-    git \
-    glibc-common \
-    glibc-devel \
-    glibc-headers \
-    glibc-static \
-    glibc-utils \
-    libseccomp \
-    libseccomp-devel \
-    libstdc++-devel \
-    libstdc++-static \
-    m4 \
-    make \
-    sed \
-    tar \
-    vim \
-    which && \
-    yum clean all
-
-# This will install the proper packages to build Kata components
-@INSTALL_MUSL@
-@INSTALL_RUST@
diff --git a/tools/osbuilder/rootfs-builder/centos/config.sh b/tools/osbuilder/rootfs-builder/centos/config.sh
deleted file mode 100644
index b0918614aa..0000000000
--- a/tools/osbuilder/rootfs-builder/centos/config.sh
+++ /dev/null
@@ -1,38 +0,0 @@
-#
-# Copyright (c) 2018 Intel Corporation
-#
-# SPDX-License-Identifier: Apache-2.0
-
-OS_NAME="Centos"
-
-OS_VERSION=${OS_VERSION:-7}
-
-LOG_FILE="/var/log/yum-centos.log"
-
-MIRROR_LIST="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=os&container=container"
-
-# Aditional Repos
-CENTOS_UPDATES_MIRROR_LIST="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=updates&container=container"
-
-CENTOS_EXTRAS_MIRROR_LIST="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=extras&container=container"
-
-CENTOS_PLUS_MIRROR_LIST="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=centosplus&container=container"
-
-GPG_KEY_URL="https://www.centos.org/keys/RPM-GPG-KEY-CentOS-7"
-
-GPG_KEY_FILE="RPM-GPG-KEY-CentOS-7"
-
-PACKAGES="coreutils chrony"
-
-#Optional packages:
-# systemd: An init system that will start kata-agent if kata-agent
-#          itself is not configured as init process.
-[ "$AGENT_INIT" = "no" ] && PACKAGES+=" systemd" || true
-
-# Init process must be one of {systemd,kata-agent}
-INIT_PROCESS=systemd
-# List of zero or more architectures to exclude from build,
-# as reported by  `uname -m`
-ARCH_EXCLUDE_LIST=()
-
-[ "$SECCOMP" = "yes" ] && PACKAGES+=" libseccomp" || true
diff --git a/tools/osbuilder/rootfs-builder/centos/config_aarch64.sh b/tools/osbuilder/rootfs-builder/centos/config_aarch64.sh
deleted file mode 100644
index b4f8ccf8d5..0000000000
--- a/tools/osbuilder/rootfs-builder/centos/config_aarch64.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# Copyright (c) 2018 ARM Limited
-#
-# SPDX-License-Identifier: Apache-2.0
-
-# Base Repos
-BASE_URL="http://mirror.centos.org/altarch/${OS_VERSION}/os/${ARCH}/"
-
-# Additional Repos
-CENTOS_UPDATES_URL="http://mirror.centos.org/altarch/${OS_VERSION}/updates/${ARCH}/"
-
-CENTOS_EXTRAS_URL="http://mirror.centos.org/altarch/${OS_VERSION}/extras/${ARCH}/"
-
-CENTOS_PLUS_URL="http://mirror.centos.org/altarch/${OS_VERSION}/centosplus/${ARCH}/"
-
-GPG_KEY_ARCH_URL="http://mirror.centos.org/altarch/7/os/aarch64/RPM-GPG-KEY-CentOS-7"
-
-GPG_KEY_ARCH_FILE="RPM-GPG-KEY-CentOS-7-aarch64"
diff --git a/tools/osbuilder/rootfs-builder/centos/config_ppc64le.sh b/tools/osbuilder/rootfs-builder/centos/config_ppc64le.sh
deleted file mode 100644
index 035cfa8b58..0000000000
--- a/tools/osbuilder/rootfs-builder/centos/config_ppc64le.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# Copyright (c) 2018 IBM
-#
-# SPDX-License-Identifier: Apache-2.0
-
-# Base Repos
-BASE_URL="http://mirror.centos.org/altarch/${OS_VERSION}/os/${ARCH}/"
-
-# Additional Repos
-CENTOS_UPDATES_URL="http://mirror.centos.org/altarch/${OS_VERSION}/updates/${ARCH}/"
-
-CENTOS_EXTRAS_URL="http://mirror.centos.org/altarch/${OS_VERSION}/extras/${ARCH}/"
-
-CENTOS_PLUS_URL="http://mirror.centos.org/altarch/${OS_VERSION}/centosplus/${ARCH}/"
-
-GPG_KEY_ARCH_URL="https://raw.githubusercontent.com/CentOS/sig-core-AltArch/master/centos-release-repo/centos-release-7/ppc/RPM-GPG-KEY-CentOS-SIG-AltArch-7-ppc64le"
-
-GPG_KEY_ARCH_FILE="RPM-GPG-KEY-CentOS-SIG-AltArch-7-ppc64le"
diff --git a/versions.yaml b/versions.yaml
index c60f334ae1..aed5dc1a9b 100644
--- a/versions.yaml
+++ b/versions.yaml
@@ -120,7 +120,7 @@ assets:
         name: "ubuntu"
         version: "latest"
       ppc64le:
-        name: "centos"
+        name: "ubuntu"
         version: "latest"
       s390x:
         name: "ubuntu"