Added initial kata files and containerd support as well as adding the Kata webhook

Issue-ID: MULTICLOUD-1320
Signed-off-by: Eric Adams <eric.adams@intel.com>
Change-Id: I9ef0bcde7c2ef22a04c32311d4571abc3b688ffe

2 files changed, 89 insertions, 22 deletions

diff --git a/kud/hosting_providers/containerized/README.md b/kud/hosting_providers/containerized/README.md
index 2f9a9e52..bd5b08a8 100644
--- a/kud/hosting_providers/containerized/README.md
+++ b/kud/hosting_providers/containerized/README.md
@@ -21,9 +21,9 @@ KUD installation installer is divided into two regions with args - `--install-pk
 
 * Container image is build using the `installer --install-pkg` arg and Kubernetes job is used to install the cluster using `installer --cluster <cluster-name>`. Installer will invoke the kubespray cluster.yml, kud-addsons and plugins ansible cluster.
 
-Installer script finds the `hosts.init` for each cluster in `/opt/multi-cluster/<cluster-name>`
+Installer script finds the `hosts.ini` for each cluster in `/opt/multi-cluster/<cluster-name>`
 
-Kubernetes jobs(a cluster per job) are used to install multiple clusters and logs of each cluster deployments are stored in the `/opt/kud/multi-cluster/<cluster-name>/logs` and artifacts are stored as follows `/opt/kud/multi-cluster/<cluster-name>/artifacts`
+Kubernetes jobs (a cluster per job) are used to install multiple clusters and logs of each cluster deployments are stored in the `/opt/kud/multi-cluster/<cluster-name>/logs` and artifacts are stored as follows `/opt/kud/multi-cluster/<cluster-name>/artifacts`
 
 ## Creating TestBed for Testing and Development
 
@@ -38,26 +38,31 @@ $ pushd multicloud-k8s/kud/hosting_providers/containerized/testing
 $ vagrant up
 $ popd
 ```
-Do following steps to keep note of
+Do the following steps to keep note of
 1. Get the IP address for the Vagrant machine - <VAGRANT_IP_ADDRESS>
 2. Copy the host /root/.ssh/id_rsa.pub into the vagrant /root/.ssh/authorized_keys
 3. From host make sure to ssh into vagrant without password ssh root@<VAGRANT_IP_ADDRESS>
 
 ## Quickstart Installation Guide
 
-Build the kud docker images as follows, add KUD_ENABLE_TESTS & KUD_PLUGIN_ENABLED for the testing only:
+Build the kud docker images as follows. Add `KUD_ENABLE_TESTS` & `KUD_PLUGIN_ENABLED`
+for the testing only. Currently only docker and containerd are supported CRI
+runtimes and can be configured using the `CONTAINER_RUNTIME` environment variable.
+To be able to run secure containers using Kata Containers, it is required to
+change the CRI runtime to containerd.
 
 ```
 $ git clone https://github.com/onap/multicloud-k8s.git && cd multicloud-k8s
-$  docker build  --rm \
+$ docker build  --rm \
 	--build-arg http_proxy=${http_proxy} \
 	--build-arg HTTP_PROXY=${HTTP_PROXY} \
 	--build-arg https_proxy=${https_proxy} \
 	--build-arg HTTPS_PROXY=${HTTPS_PROXY} \
 	--build-arg no_proxy=${no_proxy} \
 	--build-arg NO_PROXY=${NO_PROXY} \
-        --build-arg KUD_ENABLE_TESTS=true \
-        --build-arg KUD_PLUGIN_ENABLED=true \
+	--build-arg KUD_ENABLE_TESTS=true \
+	--build-arg KUD_PLUGIN_ENABLED=true \
+	--build-arg CONTAINER_RUNTIME=docker \
 	-t github.com/onap/multicloud-k8s:latest . -f kud/build/Dockerfile
 ```
 Let's create a cluster-101 and cluster-102 hosts.ini as follows
@@ -66,7 +71,7 @@ Let's create a cluster-101 and cluster-102 hosts.ini as follows
 $ mkdir -p /opt/kud/multi-cluster/{cluster-101,cluster-102}
 ```
 
-Create hosts.ini as follows in the direcotry cluster-101(c01 IP address 10.10.10.3) and cluster-102(c02 IP address 10.10.10.5). If user used Vagrant setup as mentioned in the above steps, replace the IP address with vagrant IP address
+Create the hosts.ini as follows in the directory cluster-101(c01 IP address 10.10.10.3) and cluster-102(c02 IP address 10.10.10.5). If the user used a Vagrant setup as mentioned in the above steps, replace the IP address with the vagrant IP address.
 
 ```
 $ cat /opt/kud/multi-cluster/cluster-101/hosts.ini
@@ -97,7 +102,7 @@ kube-master
 ```
 Do the same for the cluster-102 with c01 and IP address 10.10.10.5.
 
-Create the ssh secret for Baremetal or VM based on your deployment. and Launch the kubernetes job as follows
+Create the ssh secret for Baremetal or VM based on your deployment. Launch the kubernetes job as follows.
 ```
 $ kubectl create secret generic ssh-key-secret --from-file=id_rsa=/root/.ssh/id_rsa --from-file=id_rsa.pub=/root/.ssh/id_rsa.pub
 $ CLUSTER_NAME=cluster-101
diff --git a/kud/hosting_providers/containerized/installer.sh b/kud/hosting_providers/containerized/installer.sh
index 74c031dc..427850ab 100755
--- a/kud/hosting_providers/containerized/installer.sh
+++ b/kud/hosting_providers/containerized/installer.sh
@@ -14,7 +14,6 @@ set -o pipefail
 set -ex
 
 INSTALLER_DIR="$(readlink -f "$(dirname "${BASH_SOURCE[0]}")")"
-KUD_ADDONS=""
 
 function install_prerequisites {
 #install package for docker images
@@ -78,17 +77,35 @@ function install_kubespray {
     fi
 }
 
-# install_k8s() - Install Kubernetes using kubespray tool
+# install_k8s() - Install Kubernetes using kubespray tool including Kata
 function install_k8s {
     local cluster_name=$1
     ansible-playbook $verbose -i \
         $kud_inventory $kud_playbooks/preconfigure-kubespray.yml \
         --become --become-user=root | \
         tee $cluster_log/setup-kubernetes.log
-    ansible-playbook $verbose -i \
-        $kud_inventory $dest_folder/kubespray-$version/cluster.yml \
-        -e cluster_name=$cluster_name --become --become-user=root | \
-        tee $cluster_log/setup-kubernetes.log
+    if [ "$container_runtime" == "docker" ]; then
+        echo "Docker will be used as the container runtime interface"
+        ansible-playbook $verbose -i \
+            $kud_inventory $dest_folder/kubespray-$version/cluster.yml \
+            -e cluster_name=$cluster_name --become --become-user=root | \
+            tee $cluster_log/setup-kubernetes.log
+    elif [ "$container_runtime" == "containerd" ]; then
+        echo "Containerd will be used as the container runtime interface"
+        ansible-playbook $verbose -i \
+            $kud_inventory $dest_folder/kubespray-$version/cluster.yml \
+            -e $kud_kata_override_variables -e cluster_name=$cluster_name \
+            --become --become-user=root | \
+            tee $cluster_log/setup-kubernetes.log
+        #Install Kata Containers in containerd scenario
+        ansible-playbook $verbose -i \
+            $kud_inventory -e "base_dest=$HOME" \
+            $kud_playbooks/configure-kata.yml | \
+            tee $cluster_log/setup-kata.log
+    else
+        echo "Only Docker or Containerd are supported container runtimes"
+        exit 1
+    fi
 
     # Configure environment
     # Requires kubeconfig_localhost and kubectl_localhost to be true
@@ -116,21 +133,37 @@ function install_addons {
         $kud_infra_folder/galaxy-requirements.yml --ignore-errors
 
     ansible-playbook $verbose -i \
-        $kud_inventory -e "base_dest=$HOME" $kud_playbooks/configure-kud.yml | \
-        tee $cluster_log/setup-kud.log
-    # The order of KUD_ADDONS is important: some plugins (sriov, qat)
-    # require nfd to be enabled.
-    for addon in $KUD_ADDONS $plugins_name; do
+        $kud_inventory -e "base_dest=$HOME" $kud_playbooks/configure-kud.yml \
+        | tee $cluster_log/setup-kud.log
+
+    kud_addons="${KUD_ADDONS:-} ${plugins_name}"
+
+    for addon in ${kud_addons}; do
         echo "Deploying $addon using configure-$addon.yml playbook.."
         ansible-playbook $verbose -i \
-            $kud_inventory -e "base_dest=$HOME" $kud_playbooks/configure-${addon}.yml | \
+            $kud_inventory -e "base_dest=$HOME" \
+            $kud_playbooks/configure-${addon}.yml | \
             tee $cluster_log/setup-${addon}.log
     done
 
     echo "Run the test cases if testing_enabled is set to true."
     if [[ "${testing_enabled}" == "true" ]]; then
         failed_kud_tests=""
-        for addon in $KUD_ADDONS $plugins_name; do
+        # Run Kata test first if Kata was installed
+        if [ "$container_runtime" == "containerd" ]; then
+            #Install Kata webhook for test pods
+            ansible-playbook $verbose -i $kud_inventory -e "base_dest=$HOME" \
+                -e "kata_webhook_runtimeclass=$kata_webhook_runtimeclass" \
+                $kud_playbooks/configure-kata-webhook.yml \
+                --become --become-user=root | \
+                sudo tee $cluster_log/setup-kata-webhook.log
+            kata_webhook_deployed=true
+            pushd $kud_tests
+            bash kata.sh || failed_kud_tests="${failed_kud_tests} kata"
+            popd
+        fi
+        #Run other plugin tests
+        for addon in ${kud_addons}; do
             pushd $kud_tests
             bash ${addon}.sh || failed_kud_tests="${failed_kud_tests} ${addon}"
             case $addon in
@@ -150,11 +183,30 @@ function install_addons {
             esac
             popd
         done
+        # Remove Kata webhook if user didn't want it permanently installed
+        if ! [ "$enable_kata_webhook" == "true" ] && [ "$kata_webhook_deployed" == "true" ]; then
+            ansible-playbook $verbose -i $kud_inventory -e "base_dest=$HOME" \
+                -e "kata_webhook_runtimeclass=$kata_webhook_runtimeclass" \
+                $kud_playbooks/configure-kata-webhook-reset.yml \
+                --become --become-user=root | \
+                sudo tee $cluster_log/kata-webhook-reset.log
+            kata_webhook_deployed=false
+        fi
         if [[ ! -z "$failed_kud_tests" ]]; then
             echo "Test cases failed:${failed_kud_tests}"
             return 1
         fi
     fi
+
+    # Check if Kata webhook should be installed and isn't already installed
+    if [ "$enable_kata_webhook" == "true" ] && ! [ "$kata_webhook_deployed" == "true" ]; then
+        ansible-playbook $verbose -i $kud_inventory -e "base_dest=$HOME" \
+            -e "kata_webhook_runtimeclass=$kata_webhook_runtimeclass" \
+            $kud_playbooks/configure-kata-webhook.yml \
+            --become --become-user=root | \
+            sudo tee $cluster_log/setup-kata-webhook.log
+    fi
+
     echo "Add-ons deployment complete..."
 }
 
@@ -230,6 +282,15 @@ kud_playbooks=$kud_infra_folder/playbooks
 kud_tests=$kud_folder/../../tests
 k8s_info_file=$kud_folder/k8s_info.log
 testing_enabled=${KUD_ENABLE_TESTS:-false}
+container_runtime=${CONTAINER_RUNTIME:-docker}
+enable_kata_webhook=${ENABLE_KATA_WEBHOOK:-false}
+kata_webhook_runtimeclass=${KATA_WEBHOOK_RUNTIMECLASS:-kata-qemu}
+kata_webhook_deployed=false
+# For containerd the etcd_deployment_type: docker is the default and doesn't work.
+# You have to use either etcd_kubeadm_enabled: true or etcd_deployment_type: host
+# See https://github.com/kubernetes-sigs/kubespray/issues/5713
+kud_kata_override_variables="container_manager=containerd \
+    -e etcd_deployment_type=host -e kubelet_cgroup_driver=cgroupfs"
 
 mkdir -p /opt/csar
 export CSAR_DIR=/opt/csar
@@ -336,6 +397,7 @@ if [ "$1" == "--cluster" ]; then
     exit 0
 fi
 
+
 echo "Error: Refer the installer usage"
 usage
 exit 1