kelseyhightower

Creating and Scheduling a Pod Manually

This tutorial demonstrates how to create a Pod and manually schedule it to a node using cURL. This guide assumes you don't have a scheduler running in your Kubernetes cluster.

Create a Pod

The following pod will run version 1.10.0 of nginx with a 100m CPU limit.

Create the nginx pod manifest and name it pod.json:

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gcloud compute instance-groups unmanaged create taiwan \
  --zone asia-east1-a
 
gcloud compute instance-groups unmanaged add-instances taiwan \
  --instances $(kubectl get nodes \
    --context taiwan \
    --output=jsonpath='{range .items[*]}{.metadata.name},{end}') \
  --zone asia-east1-a
 
gcloud compute instance-groups set-named-ports taiwan \

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apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: vault-tokenreview-binding
  namespace: default
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:auth-delegator
subjects:

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kind: Service
apiVersion: v1
metadata:
  name: "nginx"
spec:
  selector:
    app: "nginx"
  ports:
    - protocol: "TCP"
      port: 80

kelseyhightower

A Gopher Rising

Inspired by Maya Angelou's Still I Rise

You may walk through my GitHub history,
With it’s non idiomatic and fragal lines,
You may value me less than dirt,
But still, like dust, I’ll rise.

kelseyhightower

INFO: 2020/06/10 09:16:26 [xds-bootstrap] Got bootstrap file location from GRPC_XDS_BOOTSTRAP environment variable: xds-bootstrap.json
INFO: 2020/06/10 09:16:26 [xds-bootstrap] Bootstrap content: {
  "xds_servers": [
    {
      "server_uri": "trafficdirector.googleapis.com:443",
      "channel_creds": [
        {
          "type": "google_default"
        }
      ]

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#!/bin/bash

CLUSTERS=$(gcloud container clusters list \
  --format 'value(name)[terminator=" "]')
NODE_PORT=32080

gcloud compute health-checks create tcp hello-kubernetes-health-check --port ${NODE_PORT}
 
gcloud compute backend-services create hello-kubernetes-backend-services \
  --connection-draining-timeout 3600 \

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// Compile with:
//   GOOS=linux go build -a --ldflags '-extldflags "-static"' -tags netgo -installsuffix netgo -o dns-example main.go
//
// Run on Kubernetes. Example resolv.conf
//
// # /etc/reslov.conf
// search default.svc.cluster.local svc.cluster.local cluster.local google.internal c.hightowerlabs.internal
// nameserver 10.179.240.10
// options ndots:5
//

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apiVersion: v1
kind: Service
metadata:
  labels:
    app: helloworld-uwsgi
  name: helloworld-uwsgi
spec:
  ports:
    - port: 80
      protocol: TCP

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static_resources:
  listeners:
    - name: health_check_listener
      address:
        socket_address:
          address: 0.0.0.0
          port_value: 80
      filter_chains:
        - filters:
            - name: envoy.http_connection_manager