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alekonko/setLoadbalancerIP.sh

Created June 7, 2024 09:12
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  1. alekonko created this gist Jun 7, 2024.
    60 changes: 60 additions & 0 deletions setLoadbalancerIP.sh
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,60 @@
    #!/bin/bash

    usage() {
    echo "Usage: $0 -s <service-name> [-n <namespace>]"
    exit 1
    }

    check_service_exists() {
    if [ -z "$NAMESPACE" ]; then
    kubectl get service "$SERVICE_NAME" > /dev/null 2>&1
    else
    kubectl get service "$SERVICE_NAME" -n "$NAMESPACE" > /dev/null 2>&1
    fi
    return $?
    }

    while getopts ":s:n:" opt; do
    case ${opt} in
    s )
    SERVICE_NAME=$OPTARG
    ;;
    n )
    NAMESPACE=$OPTARG
    ;;
    \? )
    usage
    ;;
    esac
    done

    if [ -z "$SERVICE_NAME" ]; then
    echo "Errore: il nome del servizio è obbligatorio."
    usage
    fi

    if ! check_service_exists; then
    echo "Errore: il servizio '$SERVICE_NAME' non esiste."
    exit 1
    fi

    if [ -z "$NAMESPACE" ]; then
    allocated_ip=$(kubectl get service $SERVICE_NAME -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
    else
    allocated_ip=$(kubectl get service $SERVICE_NAME -n $NAMESPACE -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
    fi

    if [ -z "$allocated_ip" ]; then
    echo "Errore: IP non trovato nel campo status.loadBalancer.ingress[0].ip"
    exit 1
    fi

    patch_content="{\"spec\": {\"loadBalancerIP\": \"$allocated_ip\"}}"

    if [ -z "$NAMESPACE" ]; then
    kubectl patch service $SERVICE_NAME --patch "$patch_content"
    else
    kubectl patch service $SERVICE_NAME -n $NAMESPACE --patch "$patch_content"
    fi

    echo "Patch applicata con successo: $allocated_ip"