Encode decode base64 in simple kubernetes secrets yaml files

k8s-secret-encode-decode.md

Goal

These scripts encode-decode yaml files, e.g. from

secret:
  greeting: aGVsbG8=

using ksd test.yaml it will overwrite the file contents to

secret:
  greeting: hello

using kse test.yaml will convert it back.

Code

Prerequisites:

• yq

Place this code into your .bash_profile or .zshrc or into the rc file of your terminal of choice.

function ksd() {
    file=$1

    if [ -z "$file" ]; then
        echo "decodes base64 string in kubernetes secrets like file"
        echo 
        echo "Usage: $0 <file>"
        echo
        return 1
    fi

    yq -y -i '.secret[] |= @base64d' $file
}

function kse() {
    file=$1

    if [ -z "$file" ]; then
        echo "encodes strings to base64 in kubernetes config map like file"
        echo 
        echo "Usage: $0 <file>"
        echo
        return 1
    fi

    yq -y -i '.secret[] |= @base64' $file
}