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Verify Kubernetes Plantform Binaries

Directory Check and Listing

  • Change directory to the location where the binaries are stored.
  • List the files in the directory using ls

SHA-512 Sum Generation

  • Use sha512sum to generate the SHA-512 checksum for each binary

    1. sha512sum kube-apiserver
    2. sha512sum kube-controller-manager
    3. sha512sum kube-proxy
    4. sha512sum kubelet

Verification

  • Compare the generated checksums with the provided ones to ensure they match.
  • Identify any discrepancies.

Detailed Comparison for Verification

  • For a closer look at the kube-controller-manager checksum, redirect the output to a file: sha512sum kube-controller-manager > compare
  • Open the compare file in Vim: vim compare
  • Edit the file to ensure that each line contains only the checksum value.

  • Use cat and uniq to compare the contents of the compare file and ensure that there are no duplicate lines indicating a discrepancy:

    cat compare | uniq

Cleanup

  • Remove the binaries (kubelet and kube-controller-manager) that showed discrepancies in the checksums: rm kubelet kube-controller-manager

This process ensures that the binaries in the Kubernetes cluster match the expected checksums, helping to verify their integrity and authenticity.

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