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Added knative scripts for automated tests
Signed-off-by: David-Marian Buzatu <[email protected]> Removed redundant logging Signed-off-by: David-Marian Buzatu <[email protected]> Updated readme and removed sudo from script runs Signed-off-by: David-Marian Buzatu <[email protected]> Signed-off-by: davidbuzatu-marian <[email protected]>
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‎.github/workflows/stargz_tests.yml‎

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@@ -22,19 +22,46 @@ env:
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jobs:
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stargz-container-test:
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name: Test running stargz-based image using kn
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env:
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KIND_VERSION: v0.14.0
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K8S_VERSION: v1.23
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YAML_DIR: workloads/container
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runs-on: ubuntu-20.04
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steps:
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strategy:
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fail-fast: false
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matrix:
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service:
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[
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trace_func_go,
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]
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steps:
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- name: Set up Go 1.18
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uses: actions/setup-go@v3
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with:
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go-version: 1.18
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- name: Check out code into the Go module directory
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uses: actions/checkout@v3
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- name: Create k8s Kind Cluster
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run: bash ./scripts/stargz/01-kind.sh
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- name: Install Serving
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run: bash ./scripts/stargz/02-serving.sh
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- name: Install Kourier
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run: bash ./scripts/stargz/02-kourier.sh
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- name: Setup domain and autoscaler
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run: |
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INGRESS_HOST="127.0.0.1"
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KNATIVE_DOMAIN=$INGRESS_HOST.sslip.io
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kubectl patch configmap -n knative-serving config-domain -p "{\"data\": {\"$KNATIVE_DOMAIN\": \"\"}}"
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kubectl patch configmap -n knative-serving config-autoscaler -p "{\"data\": {\"allow-zero-initial-scale\": \"true\"}}"
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- name: Setup stock-only node
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run: sudo ./scripts/cloudlab/setup_node.sh stock-only use-stargz
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run: ./scripts/cloudlab/setup_node.sh stock-only use-stargz
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- name: Check containerd service is running
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run: sudo screen -list | grep "containerd"
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run: sudo systemctl is-active --quiet stargz-snapshotter
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- name: Setup single-node cluster
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run: sudo ./scripts/cluster/create_one_node_cluster.sh stock-only
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run: ./scripts/cluster/create_one_node_cluster.sh stock-only
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- name: Run test container with kn
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run: sudo kn service apply stargz-test -f ./configs/knative_workloads/stargz-node.yaml --concurrency-target 1
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run: kn service apply stargz-test -f ./configs/knative_workloads/stargz-node.yaml --concurrency-target 1
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- name: Curl container
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run: curl http://stargz-test.default.192.168.1.240.sslip.io | grep "Hello World"
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run: curl http://stargz-test.default.192.168.1.240.sslip.io | grep "Hello World"

‎docs/stargz/stargz_guide.md‎

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@@ -5,6 +5,8 @@ This guide describes how to run stargz images on a single-cluster node using Kna
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## Creating stargz images
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[eStargz](https://github.com/containerd/stargz-snapshotter/tree/cmd/v0.12.1) is a lazily-pullable image format developed to improve the performance of container boot-ups by making better usage of the layering structure of container images. The image format is compatible to [OCI](https://github.com/opencontainers/image-spec/)/[Docker](https://github.com/moby/moby/blob/master/image/spec/v1.2.md) images, therefore it allows pushing images to standard container registries.
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Standard docker images store their layers as individual tars, one for each layer. This format does not allow to locate individual files without first unzipping the whole layer, which implies sending the tar layer first, and then unzipping it and finding the file. This inefficiency is resolved by the `stargz` format for layers, which instead takes each file and tars it on its own (with the exception of big files, which get split into chunks that get a tar on their own) and finally zips all the tars into a big tar, therefore ensuring it remains a valid tar. With the aid of an index file at the end of the list of files, one can use the stargz format to seek a specific file without going through all the files in the layer.
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To build stargz images, we recommend following the [stargz snapshotter and stargz store guide](https://github.com/containerd/stargz-snapshotter/blob/cmd/v0.12.1/docs/INSTALL.md) and building images using the [ctr-remote](https://github.com/containerd/stargz-snapshotter/tree/cmd/v0.12.1#creating-estargz-images-using-ctr-remote) CLI tool. We recommend serving images through DockerHub.
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## Cluster setup for stargz

‎scripts/stargz/01-kind.sh‎

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#!/usr/bin/env bash
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set -eo pipefail
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kindVersion=$(kind version);
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K8S_VERSION=${k8sVersion:-v1.23.4@sha256:0e34f0d0fd448aa2f2819cfd74e99fe5793a6e4938b328f657c8e3f81ee0dfb9}
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KIND_BASE=${KIND_BASE:-kindest/node}
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CLUSTER_NAME=${KIND_CLUSTER_NAME:-knative}
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echo "KinD version is ${kindVersion}"
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if [[ ! $kindVersion =~ "${KIND_VERSION}." ]]; then
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echo "WARNING: Please make sure you are using KinD version ${KIND_VERSION}.x, download from https://github.com/kubernetes-sigs/kind/releases"
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fi
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REPLY=continue
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KIND_EXIST="$(kind get clusters -q | grep ${CLUSTER_NAME} || true)"
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if [[ ${KIND_EXIST} ]] ; then
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echo "WARNING: Knative Cluster kind-${CLUSTER_NAME} already installed -> delete"
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kind delete cluster --name ${CLUSTER_NAME}
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fi
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echo "Using image ${KIND_BASE}:${K8S_VERSION}"
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KIND_CLUSTER=$(mktemp)
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cat <<EOF | kind create cluster --name ${CLUSTER_NAME} --wait 120s --config=-
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kind: Cluster
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apiVersion: kind.x-k8s.io/v1alpha4
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nodes:
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- role: control-plane
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image: ${KIND_BASE}:${K8S_VERSION}
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extraPortMappings:
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- containerPort: 31080 # expose port 31380 of the node to port 80 on the host, later to be use by kourier or contour ingress
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listenAddress: 127.0.0.1
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hostPort: 80
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EOF

‎scripts/stargz/02-contour.sh‎

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#!/usr/bin/env bash
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set -eo pipefail
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set -u
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KNATIVE_NET_CONTOUR_VERSION=${KNATIVE_NET_CONTOUR_VERSION:-1.4.0}
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## INSTALL CONTOUR
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n=0
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until [ $n -ge 2 ]; do
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kubectl apply -f https://github.com/knative-sandbox/net-contour/releases/download/knative-v${KNATIVE_NET_CONTOUR_VERSION}/contour.yaml && break
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n=$[$n+1]
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sleep 5
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done
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kubectl wait --for=condition=Established --all crd
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n contour-internal
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n contour-external
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## INSTALL NET CONTOUR
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n=0
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until [ $n -ge 2 ]; do
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kubectl apply -f https://github.com/knative-sandbox/net-contour/releases/download/knative-v${KNATIVE_NET_CONTOUR_VERSION}/net-contour.yaml && break
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n=$[$n+1]
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sleep 5
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done
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# deployment for net-contour gets deployed to namespace knative-serving
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n knative-serving
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# Configure Knative to use this ingress
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kubectl patch configmap/config-network \
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--namespace knative-serving \
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--type merge \
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--patch '{"data":{"ingress.class":"contour.ingress.networking.knative.dev"}}'
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cat <<EOF | kubectl apply -f -
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apiVersion: v1
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kind: Service
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metadata:
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name: contour-ingress
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namespace: contour-external
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labels:
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networking.knative.dev/ingress-provider: contour
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spec:
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type: NodePort
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selector:
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app: envoy
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ports:
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- name: http
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nodePort: 31080
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port: 80
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targetPort: 8080
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EOF

‎scripts/stargz/02-kourier.sh‎

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#!/usr/bin/env bash
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set -eo pipefail
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set -u
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KNATIVE_NET_KOURIER_VERSION=${KNATIVE_NET_KOURIER_VERSION:-1.4.0}
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## INSTALL KOURIER
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n=0
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until [ $n -ge 3 ]; do
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kubectl apply -f https://github.com/knative-sandbox/net-kourier/releases/download/knative-v${KNATIVE_NET_KOURIER_VERSION}/kourier.yaml && break
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echo "Kourier failed to install on first try"
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n=$[$n+1]
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sleep 10
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done
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n kourier-system
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n knative-serving
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# Configure Knative to use this ingress
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kubectl patch configmap/config-network \
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--namespace knative-serving \
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--type merge \
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--patch '{"data":{"ingress.class":"kourier.ingress.networking.knative.dev"}}'
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cat <<EOF | kubectl apply -f -
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apiVersion: v1
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kind: Service
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metadata:
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name: kourier-ingress
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namespace: kourier-system
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labels:
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networking.knative.dev/ingress-provider: kourier
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spec:
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type: NodePort
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selector:
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app: 3scale-kourier-gateway
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ports:
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- name: http2
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nodePort: 31080
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port: 80
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targetPort: 8080
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EOF

‎scripts/stargz/02-serving.sh‎

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#!/usr/bin/env bash
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set -eo pipefail
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set -u
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KNATIVE_VERSION=${KNATIVE_VERSION:-1.4.0}
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wget -q https://github.com/knative/client/releases/download/knative-v${KNATIVE_VERSION}/kn-linux-amd64
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mv kn-linux-amd64 kn && chmod +x kn
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mv kn /usr/local/bin
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n=0
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set +e
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until [ $n -ge 2 ]; do
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kubectl apply -f https://github.com/knative/serving/releases/download/knative-v${KNATIVE_VERSION}/serving-crds.yaml && break
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echo "Serving CRDs failed to install on first try"
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n=$[$n+1]
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sleep 5
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done
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set -e
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kubectl wait --for=condition=Established --all crd
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n=0
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set +e
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until [ $n -ge 2 ]; do
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kubectl apply -f https://github.com/knative/serving/releases/download/knative-v${KNATIVE_VERSION}/serving-core.yaml && break
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echo "Serving Core failed to install on first try"
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n=$[$n+1]
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sleep 5
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done
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set -e
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kubectl wait pod --timeout=-1s --for=condition=Ready -l '!job-name' -n knative-serving
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