custom-node-list

#!/usr/bin/env python3

import os

from kubernetes import client, config
from kubernetes.client.rest import ApiException
from prettytable import PrettyTable

kubeconfig = os.getenv("K8S_AUTH_KUBECONFIG") or os.getenv("KUBECONFIG")
config.load_kube_config(kubeconfig)

def get_items():
    t = PrettyTable(['Name', 'Status', 'Roles'])
    t.align['Name'] = 'l'                                                                                                       
    t.align['Status'] = 'l'
    t.align['Roles'] = 'l'
    t.border = False
    t.right_padding_width = 3
    t.left_padding_width = 0

    v1 = client.CoreV1Api()
    out = v1.list_node()
    for item in out.items:
        cMap = {}
        for cond in item.status.conditions:
            cMap[cond.type] = cond
        status = ""
        if cMap.get('Ready'):
            if cMap['Ready'].status:
                status = "Ready"
            else:
                status = "NotReady"
        else:
            status = "Unknown"
        if item.spec.unschedulable:
            status += ",SchedulingDisabled"
        role = ''
        for k,v in item.metadata.labels.items():
            if "node-role.kubernetes.io" in k:
                if role:
                    role += ","
                role += k.split("/")[1]
        t.add_row([item.metadata.name, status, role])
    print(t)

if __name__ == "__main__":
    get_items()