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Script using jq and yq to upgrade kubernetes ingress version from networking.k8s.io/v1beta1 to networking.k8s.io/v1
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| #!/usr/bin/env bash | |
| # Upgrade ingress resource api version to v1. | |
| # | |
| # USAGE: | |
| # convert-ingress-version.sh [OPTIONS] <FILE> | |
| # | |
| # OPTIONS: | |
| # -i update the yaml file inplace. | |
| # | |
| # ------------------------------------------------------------ | |
| # apiVersion: networking.k8s.io/v1beta1 -> networking.k8s.io/v1` | |
| # spec.backend -> spec.defaultBackend | |
| # serviceName -> service.name | |
| # servicePort -> service.port.name (for string values) | |
| # servicePort -> service.port.number (for numeric values) | |
| # pathType: ImplementationSpecific (no longer has a default value in v1; "Exact", "Prefix", or "ImplementationSpecific" must be specified) | |
| # ------------------------------------------------------------ | |
| set -euo pipefail | |
| options=() | |
| file=$1 | |
| if [ "$file" == "-i" ]; then | |
| options=(--inplace) | |
| file=$2 | |
| echo "Converting inline: $2..." | |
| fi | |
| if ! yq eval -e '.apiVersion == "networking.k8s.io/v1beta1"' "$file" >/dev/null 2>&1; then | |
| echo "error: wrong apiVersion" | |
| exit 1 | |
| fi | |
| # spec modifications | |
| modified_spec=$( | |
| yq eval -j '.spec' "$file" | | |
| jq ' | |
| def get_port: | |
| if .servicePort|type == "number" then | |
| {number: .servicePort} | |
| else | |
| {name: .servicePort} | |
| end; | |
| def convert_backend: {service: {name: .serviceName, port: get_port}}; | |
| with_entries(if .key == "backend" | |
| then (.key = "defaultBackend" | .value |= convert_backend) | |
| else . | |
| end) | | |
| .rules[].http.paths[] |= { | |
| path, | |
| pathType: (.pathType // "ImplementationSpecific"), | |
| backend: (.backend | convert_backend) | |
| } | |
| ' | |
| ) | |
| export modified_spec | |
| # root level modifications, preserving annotations and comments | |
| yq -P "${options[@]}" eval '.apiVersion = "networking.k8s.io/v1" | .spec = env(modified_spec)' "$file" |
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