Login on Kubernetes with credentials Jenkinsfile

internet_example.groovy

node {
    def creds

    stage('Sandbox') {
        withCredentials([usernamePassword(credentialsId: 'my-creds', passwordVariable: 'C_PASS', usernameVariable: 'C_USER')]) {
            creds = "\nUser: ${C_USER}\nPassword: ${C_PASS}\n"
        }

        println creds
    }
}

Jenkinsfilev1

node {
    def creds
    stage('Iniciando o Deploy') {
        withCredentials([usernamePassword(credentialsId: 'admin_kube_dev', passwordVariable: 'C_PASS', usernameVariable: 'C_USER')]) {
            creds = "${C_PASS}"
        println creds
        sh '''
        echo 'Inciando o deploy'
	    echo "Passowrd: ${C_PASS}"
	    kubectl config set-credentials k8s.dev.renato.io --username=admin --password=${C_PASS}
	    kubectl config set-cluster k8s.dev.renato.io --insecure-skip-tls-verify=true --server=https://api.k8s.dev.renato.io
	    kubectl config set-context k8s.dev.renato.io --user=k8s.dev.renato.io --namespace=default --cluster=k8s.dev.renato.io
	    kubectl config use-context k8s.dev.renato.io
	    kubectl get pods -n jenkins
        '''
        }
    }    
    
}