diff --git a/README.md b/README.md
index a81e4af..a231849 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ In order to run PKE, you need to meet the following requirements.
 
 #### Operating system
 
-`pke` currently is available for CentOS 7.x, RHEL 7.x. and **Ubuntu 18.04 LTS**.
+`pke` currently is available for CentOS 8.x, RHEL 8.x. and **Ubuntu 20.04 LTS**.
 
 > We recommend using Ubuntu since it contains a much newer Kernel version. If you need support for an OS not listed above feel free to contact us.
 
diff --git a/Vagrantfile b/Vagrantfile
index 92baf0a..fd6d3db 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -15,26 +15,18 @@ Vagrant.configure("2") do |config|
 
     $num_instances = 4
 
-    # centos 8 nodes
+    # almalinux 8 nodes
     (1..$num_instances).each do |n|
-        config.vm.define "centos#{n}" do |node|
-            node.vm.box = "centos/8"
-
-            # Monkey patch for https://github.com/dotless-de/vagrant-vbguest/issues/367
-            class Foo < VagrantVbguest::Installers::CentOS
-                def has_rel_repo?
-                    unless instance_variable_defined?(:@has_rel_repo)
-                        rel = release_version
-                        @has_rel_repo = communicate.test("yum repolist")
-                    end
-                    @has_rel_repo
-                end
+        config.vm.define "almalinux#{n}" do |node|
+            node.vm.box = "boxomatic/almalinux-8"
+            node.vm.box_version = "20220116.0.1"
 
+            class Foo < VagrantVbguest::Installers::Linux
                 def install_kernel_devel(opts=nil, &block)
-                    cmd = "yum update kernel -y"
+                    cmd = "dnf update kernel -y"
                     communicate.sudo(cmd, opts, &block)
 
-                    cmd = "yum install -y kernel-devel"
+                    cmd = "dnf install -y kernel-devel"
                     communicate.sudo(cmd, opts, &block)
 
                     cmd = "shutdown -r now"
@@ -48,9 +40,9 @@ Vagrant.configure("2") do |config|
             node.vbguest.installer = Foo
 
             node.vm.network "private_network", ip: "192.168.64.#{n+10}"
-            node.vm.hostname = "centos#{n}"
+            node.vm.hostname = "almalinux#{n}"
             node.vm.provider "virtualbox" do |vb|
-                vb.name = "centos#{n}"
+                vb.name = "almalinux#{n}"
                 vb.memory = "2048"
                 vb.cpus = "2"
                 vb.customize ["modifyvm", :id, "--audio", "none"]
@@ -68,14 +60,14 @@ Vagrant.configure("2") do |config|
                 echo 'ip_tables' >> /etc/modules-load.d/iptables.conf
                 echo 'set host name resolution'
                 cat >> /etc/hosts <<EOF
-192.168.64.11 centos1
-192.168.64.12 centos2
-192.168.64.13 centos3
-192.168.64.14 centos4
+192.168.64.11 almalinux1
+192.168.64.12 almalinux2
+192.168.64.13 almalinux3
+192.168.64.14 almalinux4
 EOF
                 cat /etc/hosts
 
-                hostnamectl set-hostname centos#{n}
+                hostnamectl set-hostname almalinux#{n}
 
                 SHELL
             end
@@ -123,63 +115,6 @@ EOF
         end
     end
 
-    config.vm.define "ubuntu-docker-bionic" do |node|
-        node.vm.box = "ubuntu/bionic64"
-        node.vm.network "private_network", ip: "192.168.64.30"
-        node.vm.hostname = "ubuntu-docker"
-
-        node.vm.provider "virtualbox" do |vb|
-            vb.name = "ubuntu-docker"
-            vb.memory = "2048"
-            vb.cpus = "2"
-            vb.customize ["modifyvm", :id, "--audio", "none"]
-            vb.customize ["modifyvm", :id, "--memory", "2048"]
-            vb.customize ["modifyvm", :id, "--cpus", "2"]
-        end
-
-        node.vm.provision "shell" do |s|
-            s.inline = <<-SHELL
-
-            apt-get update
-            apt-get install -y ntp wget curl vim net-tools socat
-            echo 'sync time'
-            systemctl start ntp
-            systemctl enable ntp
-
-            echo 'set host name resolution'
-            cat >> /etc/hosts <<EOF
-192.168.64.30 ubuntu-docker
-EOF
-            cat /etc/hosts
-
-            hostnamectl set-hostname ubuntu-docker
-
-            curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
-            add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
-            apt-get update && apt-get install -y \
-                containerd.io=1.2.13-1 \
-                docker-ce=5:19.03.8~3-0~ubuntu-$(lsb_release -cs) \
-                docker-ce-cli=5:19.03.8~3-0~ubuntu-$(lsb_release -cs)
-
-            cat > /etc/docker/daemon.json <<EOF
-{
-  "exec-opts": ["native.cgroupdriver=systemd"],
-  "log-driver": "json-file",
-  "log-opts": {
-    "max-size": "100m"
-  },
-  "storage-driver": "overlay2"
-}
-EOF
-
-            mkdir -p /etc/systemd/system/docker.service.d
-            systemctl daemon-reload
-            systemctl restart docker
-
-            SHELL
-        end
-    end
-
     config.vm.define "ubuntu-docker-focal" do |node|
         node.vm.box = "ubuntu/focal64"
         node.vm.network "private_network", ip: "192.168.64.30"
diff --git a/almalinux8-multi-upgrade.sh b/almalinux8-multi-upgrade.sh
new file mode 100755
index 0000000..d3b17df
--- /dev/null
+++ b/almalinux8-multi-upgrade.sh
@@ -0,0 +1,29 @@
+#!/bin/bash -e
+
+# build latest pke tool
+GOOS=linux make pke
+
+KUBERNETES_VERSION="${1:-v1.21.0}"
+
+# upgrade first master node
+echo ""
+echo "= almalinux1 ========================================================================"
+vagrant ssh almalinux1 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION'"
+
+# waiting 10 seconds because of apiserver
+sleep 10
+
+# upgrade second master node
+echo ""
+echo "= almalinux2 ========================================================================"
+vagrant ssh almalinux2 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION' --kubernetes-additional-control-plane"
+
+# upgrade third master node
+echo ""
+echo "= almalinux3 ========================================================================"
+vagrant ssh almalinux3 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION' --kubernetes-additional-control-plane"
+
+# upgrade worker node
+echo ""
+echo "= almalinux4 ========================================================================"
+vagrant ssh almalinux4 -c "sudo /banzaicloud/pke upgrade worker --kubernetes-version='$KUBERNETES_VERSION'"
diff --git a/almalinux8-multi.sh b/almalinux8-multi.sh
new file mode 100755
index 0000000..281183b
--- /dev/null
+++ b/almalinux8-multi.sh
@@ -0,0 +1,53 @@
+#!/bin/bash -e
+
+# prerequisitesSkipping phase due to missing Pipeline API endpoint credentials
+jq --version || (echo "Please install jq command line tool. https://stedolan.github.io/jq/" && exit 1)
+
+# build latest pke tool
+GOOS=linux make pke
+
+KUBERNETES_VERSION="${1:-v1.20.6}"
+
+# install first master node
+echo ""
+echo "= almalinux1 ========================================================================"
+vagrant up almalinux1
+vagrant ssh almalinux1 -c "sudo sh -c 'echo -n "LANG=en_US.utf-8\nLC_ALL=en_US.utf-8" > /etc/environment'"
+vagrant ssh almalinux1 -c "sudo /scripts/pke-multi-master1.sh '$KUBERNETES_VERSION' '192.168.64.11:6443'"
+vagrant ssh almalinux1 -c 'sudo cat /etc/kubernetes/admin.conf' > pke-multi-config.yaml
+vagrant ssh almalinux1 -c "sudo /banzaicloud/pke token list -o json" > build/token.json
+
+
+TOKEN=`jq -r '.tokens[] | select(.expired == false) | .token' build/token.json`
+CERTHASH=`jq -r '.tokens[] | select(.expired == false) | .hash' build/token.json`
+
+echo ""
+echo "Using '$TOKEN' and '$CERTHASH' to join other nodes to the cluster"
+
+# install second master node
+echo ""
+echo "= almalinux2 ========================================================================"
+vagrant up almalinux2
+vagrant ssh almalinux2 -c "sudo /scripts/pke-multi-mastern.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH' 192.168.64.12"
+
+# install third master node
+echo ""
+echo "= almalinux3 ========================================================================"
+vagrant up almalinux3
+vagrant ssh almalinux3 -c "sudo /scripts/pke-multi-mastern.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH' 192.168.64.13"
+
+# install worker node
+echo ""
+echo "= almalinux4 ========================================================================"
+vagrant up almalinux4
+vagrant ssh almalinux4 -c "sudo /scripts/pke-multi-worker.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH'"
+
+export KUBECONFIG=$PWD/pke-multi-config.yaml
+
+echo ""
+echo "You can access your PKE cluster either:"
+echo "- from your host machine accessing the cluster via kubectl. Please run:"
+echo "export KUBECONFIG=$PWD/pke-multi-config.yaml"
+echo ""
+echo "- or starting a shell in the virtual machine. Please run:"
+echo "vagrant ssh almalinux1 -c 'sudo -s'"
diff --git a/almalinux8-single-upgrade.sh b/almalinux8-single-upgrade.sh
new file mode 100755
index 0000000..3a1d5b0
--- /dev/null
+++ b/almalinux8-single-upgrade.sh
@@ -0,0 +1,8 @@
+#!/bin/bash -e
+
+# build latest pke tool
+GOOS=linux make pke
+
+KUBERNETES_VERSION="${1:-v1.21.0}"
+
+vagrant ssh almalinux1 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION'"
diff --git a/centos8-single.sh b/almalinux8-single.sh
similarity index 59%
rename from centos8-single.sh
rename to almalinux8-single.sh
index cec1952..d54d3b6 100755
--- a/centos8-single.sh
+++ b/almalinux8-single.sh
@@ -5,9 +5,9 @@ GOOS=linux make pke
 
 KUBERNETES_VERSION="${1:-v1.20.6}"
 
-vagrant up centos1
-vagrant ssh centos1 -c "sudo /scripts/pke-single.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' containerd cilium"
-vagrant ssh centos1 -c 'sudo cat /etc/kubernetes/admin.conf' > pke-single-config.yaml
+vagrant up almalinux1
+vagrant ssh almalinux1 -c "sudo /scripts/pke-single.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' containerd cilium"
+vagrant ssh almalinux1 -c 'sudo cat /etc/kubernetes/admin.conf' > pke-single-config.yaml
 
 export KUBECONFIG=$PWD/pke-single-config.yaml
 
@@ -17,4 +17,4 @@ echo "- from your host machine accessing the cluster via kubectl. Please run:"
 echo "export KUBECONFIG=$PWD/pke-single-config.yaml"
 echo ""
 echo "- or starting a shell in the virtual machine. Please run:"
-echo "vagrant ssh centos1 -c 'sudo -s'"
+echo "vagrant ssh almalinux1 -c 'sudo -s'"
diff --git a/centos8-multi-upgrade.sh b/centos8-multi-upgrade.sh
deleted file mode 100755
index b6ab197..0000000
--- a/centos8-multi-upgrade.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/bash -e
-
-# build latest pke tool
-GOOS=linux make pke
-
-KUBERNETES_VERSION="${1:-v1.21.0}"
-
-# upgrade first master node
-echo ""
-echo "= centos1 ========================================================================"
-vagrant ssh centos1 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION'"
-
-# waiting 10 seconds because of apiserver
-sleep 10
-
-# upgrade second master node
-echo ""
-echo "= centos2 ========================================================================"
-vagrant ssh centos2 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION' --kubernetes-additional-control-plane"
-
-# upgrade third master node
-echo ""
-echo "= centos3 ========================================================================"
-vagrant ssh centos3 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION' --kubernetes-additional-control-plane"
-
-# upgrade worker node
-echo ""
-echo "= centos4 ========================================================================"
-vagrant ssh centos4 -c "sudo /banzaicloud/pke upgrade worker --kubernetes-version='$KUBERNETES_VERSION'"
diff --git a/centos8-multi.sh b/centos8-multi.sh
deleted file mode 100755
index 76d6b34..0000000
--- a/centos8-multi.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/bin/bash -e
-
-# prerequisitesSkipping phase due to missing Pipeline API endpoint credentials
-jq --version || (echo "Please install jq command line tool. https://stedolan.github.io/jq/" && exit 1)
-
-# build latest pke tool
-GOOS=linux make pke
-
-KUBERNETES_VERSION="${1:-v1.20.6}"
-
-# install first master node
-echo ""
-echo "= centos1 ========================================================================"
-vagrant up centos1
-vagrant ssh centos1 -c "sudo sh -c 'echo -n "LANG=en_US.utf-8\nLC_ALL=en_US.utf-8" > /etc/environment'"
-vagrant ssh centos1 -c "sudo /scripts/pke-multi-master1.sh '$KUBERNETES_VERSION' '192.168.64.11:6443'"
-vagrant ssh centos1 -c 'sudo cat /etc/kubernetes/admin.conf' > pke-multi-config.yaml
-vagrant ssh centos1 -c "sudo /banzaicloud/pke token list -o json" > build/token.json
-
-
-TOKEN=`jq -r '.tokens[] | select(.expired == false) | .token' build/token.json`
-CERTHASH=`jq -r '.tokens[] | select(.expired == false) | .hash' build/token.json`
-
-echo ""
-echo "Using '$TOKEN' and '$CERTHASH' to join other nodes to the cluster"
-
-# install second master node
-echo ""
-echo "= centos2 ========================================================================"
-vagrant up centos2
-vagrant ssh centos2 -c "sudo /scripts/pke-multi-mastern.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH' 192.168.64.12"
-
-# install third master node
-echo ""
-echo "= centos3 ========================================================================"
-vagrant up centos3
-vagrant ssh centos3 -c "sudo /scripts/pke-multi-mastern.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH' 192.168.64.13"
-
-# install worker node
-echo ""
-echo "= centos4 ========================================================================"
-vagrant up centos4
-vagrant ssh centos4 -c "sudo /scripts/pke-multi-worker.sh '$KUBERNETES_VERSION' '192.168.64.11:6443' '$TOKEN' '$CERTHASH'"
-
-export KUBECONFIG=$PWD/pke-multi-config.yaml
-
-echo ""
-echo "You can access your PKE cluster either:"
-echo "- from your host machine accessing the cluster via kubectl. Please run:"
-echo "export KUBECONFIG=$PWD/pke-multi-config.yaml"
-echo ""
-echo "- or starting a shell in the virtual machine. Please run:"
-echo "vagrant ssh centos1 -c 'sudo -s'"
diff --git a/centos8-single-upgrade.sh b/centos8-single-upgrade.sh
deleted file mode 100755
index 17543ae..0000000
--- a/centos8-single-upgrade.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash -e
-
-# build latest pke tool
-GOOS=linux make pke
-
-KUBERNETES_VERSION="${1:-v1.21.0}"
-
-vagrant ssh centos1 -c "sudo /banzaicloud/pke upgrade master --kubernetes-version='$KUBERNETES_VERSION'"