gcloud-nslookup.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\n",
      "All components are up to date.\n",
      "yes: standard output: Broken pipe\n",
      "\n",
      "All components are up to date.\n",
      "yes: standard output: Broken pipe\n",
      "\n",
      "All components are up to date.\n",
      "yes: standard output: Broken pipe\n"
     ]
    }
   ],
   "source": [
    "yes | gcloud components update\n",
    "yes | gcloud components install kubectl\n",
    "yes | gcloud components install beta"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "PROJECT_ID  NAME      PROJECT_NUMBER\n",
      "tmbgpu      tmbgpu    534830068186\n",
      "tmbmicro    tmbmicro  577226705806\n"
     ]
    }
   ],
   "source": [
    "gcloud projects list"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "set -e\n",
    "[email protected]\n",
    "project=tmbmicro\n",
    "zone=us-central1-b\n",
    "cluster=testcluster\n",
    "image=gcr.io/$project/testimage"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "The following clusters will be deleted.\n",
      " - [testcluster] in [us-central1-a]\n",
      "\n",
      "Do you want to continue (Y/n)?  \n",
      "\u001b[1;31mERROR:\u001b[0m (gcloud.container.clusters.delete) Some requests did not succeed:\n",
      " - args: [u\"ResponseError: code=404, message=Not found: projects/tmbgpu/zones/us-central1-a/clusters/testcluster.\\nNo cluster named 'testcluster' in tmbgpu.\"]\n",
      "   exit_code: 1\n",
      "   message: ResponseError: code=404, message=Not found: projects/tmbgpu/zones/us-central1-a/clusters/testcluster.\n",
      "No cluster named 'testcluster' in tmbgpu.\n",
      "\n",
      "yes: standard output: Broken pipe\n"
     ]
    }
   ],
   "source": [
    "yes | gcloud container clusters delete $cluster || true"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Updated property [core/project].\n",
      "Updated property [compute/zone].\n",
      "\u001b[1;33mWARNING:\u001b[0m Starting in 1.12, new clusters will have basic authentication disabled by default. Basic authentication can be enabled (or disabled) manually using the `--[no-]enable-basic-auth` flag.\n",
      "\u001b[1;33mWARNING:\u001b[0m Starting in 1.12, new clusters will not have a client certificate issued. You can manually enable (or disable) the issuance of the client certificate using the `--[no-]issue-client-certificate` flag.\n",
      "\u001b[1;33mWARNING:\u001b[0m Currently VPC-native is not the default mode during cluster creation. In the future, this will become the default mode and can be disabled using `--no-enable-ip-alias` flag. Use `--[no-]enable-ip-alias` flag to suppress this warning.\n",
      "\u001b[1;33mWARNING:\u001b[0m Starting in 1.12, default node pools in new clusters will have their legacy Compute Engine instance metadata endpoints disabled by default. To create a cluster with legacy instance metadata endpoints disabled in the default node pool, run `clusters create` with the flag `--metadata disable-legacy-endpoints=true`.\n",
      "This will enable the autorepair feature for nodes. Please see https://cloud.google.com/kubernetes-engine/docs/node-auto-repair for more information on node autorepairs.\n",
      "Creating cluster testcluster in us-central1-b...done.                          \n",
      "Created [https://container.googleapis.com/v1/projects/tmbmicro/zones/us-central1-b/clusters/testcluster].\n",
      "To inspect the contents of your cluster, go to: https://console.cloud.google.com/kubernetes/workload_/gcloud/us-central1-b/testcluster?project=tmbmicro\n",
      "kubeconfig entry generated for testcluster.\n",
      "NAME         LOCATION       MASTER_VERSION  MASTER_IP        MACHINE_TYPE   NODE_VERSION  NUM_NODES  STATUS\n",
      "testcluster  us-central1-b  1.9.7-gke.11    104.197.152.208  n1-standard-1  1.9.7-gke.11  4          RUNNING\n"
     ]
    }
   ],
   "source": [
    "gcloud config set project $project\n",
    "gcloud config set compute/zone us-central1-b\n",
    "\n",
    "gcloud container clusters create $cluster --num-nodes=4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NAME                                        ZONE           MACHINE_TYPE   PREEMPTIBLE  INTERNAL_IP  EXTERNAL_IP      STATUS\n",
      "gke-testcluster-default-pool-34cd877f-7f7q  us-central1-b  n1-standard-1               10.128.0.5   104.198.50.125   RUNNING\n",
      "gke-testcluster-default-pool-34cd877f-d67d  us-central1-b  n1-standard-1               10.128.0.2   35.239.64.14     RUNNING\n",
      "gke-testcluster-default-pool-34cd877f-h0hw  us-central1-b  n1-standard-1               10.128.0.3   104.197.114.110  RUNNING\n",
      "gke-testcluster-default-pool-34cd877f-zs6m  us-central1-b  n1-standard-1               10.128.0.4   35.226.126.220   RUNNING\n"
     ]
    }
   ],
   "source": [
    "gcloud compute instances list"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "pod \"busybox\" created\n"
     ]
    }
   ],
   "source": [
    "kubectl create -f - <<EOF\n",
    "---\n",
    "apiVersion: v1\n",
    "kind: Pod\n",
    "metadata:\n",
    "  name: busybox\n",
    "  labels:\n",
    "    app: busybox\n",
    "spec:\n",
    "  containers:\n",
    "  - name: busybox\n",
    "    image: busybox\n",
    "    command: [\"sleep\"]\n",
    "    args: [\"1000000\"]\n",
    "  restartPolicy: Always\n",
    "  hostname: \"busybox\"\n",
    "EOF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "pod \"busybox2\" created\n"
     ]
    }
   ],
   "source": [
    "kubectl create -f - <<EOF\n",
    "---\n",
    "apiVersion: v1\n",
    "kind: Pod\n",
    "metadata:\n",
    "  name: busybox2\n",
    "  labels:\n",
    "    app: busybox2\n",
    "spec:\n",
    "  containers:\n",
    "  - name: busybox2\n",
    "    image: busybox\n",
    "    command: [\"sleep\"]\n",
    "    args: [\"1000000\"]\n",
    "  restartPolicy: Always\n",
    "  hostname: \"busybox2\"\n",
    "EOF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NAME       READY     STATUS    RESTARTS   AGE\n",
      "busybox    1/1       Running   0          56s\n",
      "busybox2   1/1       Running   0          55s\n"
     ]
    }
   ],
   "source": [
    "kubectl get pods"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Server:\t\t10.39.240.10\n",
      "Address:\t10.39.240.10:53\n",
      "\n",
      "** server can't find busybox2: NXDOMAIN\n",
      "\n",
      "*** Can't find busybox2: No answer\n",
      "\n"
     ]
    }
   ],
   "source": [
    "kubectl exec busybox -- nslookup busybox2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Server:\t\t10.39.240.10\n",
      "Address:\t10.39.240.10:53\n",
      "\n",
      "** server can't find kubernetes.default: NXDOMAIN\n",
      "\n",
      "*** Can't find kubernetes.default: No answer\n",
      "\n"
     ]
    }
   ],
   "source": [
    "kubectl exec busybox -- nslookup kubernetes.default"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "nameserver 10.39.240.10\n",
      "search default.svc.cluster.local svc.cluster.local cluster.local c.tmbmicro.internal google.internal\n",
      "options ndots:5\n"
     ]
    }
   ],
   "source": [
    "kubectl exec busybox -- cat /etc/resolv.conf"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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