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Signed-off-by: Sergio Gonzalez <[email protected]>
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| name: multus-cni | ||
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| image: cgr.dev/chainguard/multus-cni | ||
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| logo: https://storage.googleapis.com/chainguard-academy/logos/multus-cni.svg | ||
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| endoflife: "" | ||
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| console_summary: "" | ||
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| short_description: A CNI meta-plugin for multi-homed pods in Kubernetes | ||
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| compatibility_notes: "" | ||
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| readme_file: README.md | ||
| upstream_url: | ||
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| upstream_url: | ||
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| keywords: [] | ||
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| #!/usr/bin/env bash | ||
| #!/bin/bash | ||
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| set -o errexit -o nounset -o errtrace -o pipefail -x | ||
| # Function to check pod status | ||
| check_pod_status() { | ||
| local pod_name="$1" | ||
| local namespace="$2" | ||
| kubectl get pod "$pod_name" -n "$namespace" &>/dev/null | ||
| } | ||
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| # Replace "multus-cni" with the name of your Helm release | ||
| HELM_RELEASE="multus-cni" | ||
| # Function to delete the pod if it exists | ||
| delete_pod_if_exists() { | ||
| local pod_name="$1" | ||
| local namespace="$2" | ||
| if check_pod_status "$pod_name" "$namespace"; then | ||
| kubectl delete pod "$pod_name" -n "$namespace" &>/dev/null | ||
| fi | ||
| } | ||
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| POD_SPEC='apiVersion: v1 | ||
| # Apply the Multus CNI DaemonSet manifest | ||
| kubectl apply -f https://raw.githubusercontent.com/k8snetworkplumbingwg/multus-cni/master/deployments/multus-daemonset-thick.yml &>/dev/null | ||
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| NAMESPACE="multus" | ||
| kubectl create namespace "$NAMESPACE" &>/dev/null | ||
| kubectl create serviceaccount multus -n "$NAMESPACE" &>/dev/null | ||
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| cat <<EOF > multus-pod.yaml | ||
| apiVersion: v1 | ||
| kind: Pod | ||
| metadata: | ||
| name: test-pod | ||
| name: multus-test-pod | ||
| namespace: $NAMESPACE | ||
| annotations: | ||
| k8s.v1.cni.cncf.io/networks: '[{"name":"flannel-network"},{"name":"default-network"}]' | ||
| spec: | ||
| serviceAccountName: multus | ||
| containers: | ||
| - name: test-container | ||
| - name: multus-test-container | ||
| image: busybox | ||
| command: | ||
| - /bin/sh | ||
| - -c | ||
| - "trap : TERM INT; (while true; do sleep 1; done) & wait" | ||
| - sleep | ||
| - "3600" | ||
| stdin: true | ||
| tty: true | ||
| ' | ||
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| # Create the test pod | ||
| kubectl apply -f - <<< "$POD_SPEC" | ||
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| # Wait until the pod is in "Running" state | ||
| echo "Waiting for pod to be in 'Running' state..." | ||
| while true; do | ||
| POD_STATUS=$(kubectl get pod test-pod -o jsonpath='{.status.phase}') | ||
| if [ "$POD_STATUS" = "Running" ]; then | ||
| break | ||
| fi | ||
| sleep 1 | ||
| done | ||
| echo "Pod is now in 'Running' state." | ||
| resources: | ||
| requests: | ||
| memory: "64Mi" | ||
| cpu: "250m" | ||
| limits: | ||
| memory: "128Mi" | ||
| cpu: "500m" | ||
| EOF | ||
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| kubectl apply -f multus-pod.yaml &>/dev/null | ||
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| # Total time to wait in seconds (3 minutes) | ||
| TOTAL_WAIT_TIME=$((3 * 60)) | ||
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| # Waiting time between checks in seconds (5 seconds) | ||
| WAIT_INTERVAL=5 | ||
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| # Get the IP address of the pod | ||
| POD_IP=$(kubectl get pod test-pod -o jsonpath='{.status.podIPs[0].ip}') | ||
| # Total expected time | ||
| TOTAL_WAITED=0 | ||
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| # Test network connectivity | ||
| echo "Testing connectivity to Google..." | ||
| ping -c 3 google.com | ||
| # pod name | ||
| POD_NAME="multus-test-pod" | ||
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| # Delete the test pod | ||
| kubectl delete pod test-pod | ||
| while [ $TOTAL_WAITED -lt $TOTAL_WAIT_TIME ]; do | ||
| # Get pod status | ||
| POD_STATUS=$(kubectl get pod "$POD_NAME" -n "$NAMESPACE" -o jsonpath='{.status.phase}') | ||
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| # Check if the status is 'Running' | ||
| if [ "$POD_STATUS" == "Running" ]; then | ||
| echo "The pod is in Running state." | ||
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| # Test connectivity from the pod to another resource within the cluster | ||
| kubectl exec "$POD_NAME" -n "$NAMESPACE" -- sh -c "ping -c 3 google.com" | ||
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| # Check if the pod still exists before trying to delete it | ||
| if check_pod_status "$POD_NAME" "$NAMESPACE"; then | ||
| delete_pod_if_exists "$POD_NAME" "$NAMESPACE" | ||
| fi | ||
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| # Delete the Multus CNI DaemonSet | ||
| kubectl delete -f https://raw.githubusercontent.com/k8snetworkplumbingwg/multus-cni/master/deployments/multus-daemonset-thick.yml &>/dev/null | ||
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| exit 0 | ||
| fi | ||
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| # Increase total expected time | ||
| TOTAL_WAITED=$((TOTAL_WAITED + WAIT_INTERVAL)) | ||
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| # Wait before next check | ||
| sleep "$WAIT_INTERVAL" | ||
| done | ||
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| exit 0 | ||
| # If the pod is not in 'Running' state after 3 minutes, exit with exit code 1 | ||
| echo "The pod is not in Running state after 3 minutes." | ||
| exit 1 |
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