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Update create_deployment notebook
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‎examples/notebooks/create_deployment.ipynb

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"How to create a Deployment\n",
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"==========================\n",
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"\n",
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"In this notebook, we show you how to create a Deployment with 3 ReplicaSets. These ReplicaSets are owned by the Deployment and are managed by the Deployment controller. We would also learn how to carry out RollingUpdate and RollBack to new and older versions of the deployment."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"from kubernetes import client, config"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Load config from default location"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"config.load_kube_config()\n",
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"extension = client.ExtensionsV1beta1Api()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Create Deployment object"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"deployment = client.ExtensionsV1beta1Deployment()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Fill required Deployment fields (apiVersion, kind, and metadata)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"deployment.api_version = 'extensions/v1beta1'\n",
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"deployment.kind = 'Deployment'\n",
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"deployment.metadata = client.V1ObjectMeta(name='nginx-deployment')"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### A Deployment also needs a .spec section"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"spec = client.ExtensionsV1beta1DeploymentSpec()\n",
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"spec.replicas = 3"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Add Pod template in .spec.template section"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"client.Configuration().host=\"http://localhost:8080\""
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"spec.template = client.V1PodTemplateSpec()\n",
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"spec.template.metadata = client.V1ObjectMeta(labels={'app': 'nginx'})\n",
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"spec.template.spec = client.V1PodSpec()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Pod template container description"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"container = client.V1Container()\n",
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"container.name='nginx'\n",
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"container.image='nginx:1.7.9'\n",
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"container. ports = [client.V1ContainerPort(container_port=80)]"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"spec.template.spec.containers = [container]\n",
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"deployment.spec = spec"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Create Deployment"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"extension.create_namespaced_deployment(namespace='default', body=deployment)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Update container image "
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]
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},
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{
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},
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"outputs": [],
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"source": [
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"extensions = client.ExtensionsV1beta1Api()"
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"deployment.spec.template.spec.containers[0].image = 'nginx:1.9.1'"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Apply update (RollingUpdate)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"extension.replace_namespaced_deployment(name='nginx-deployment', namespace='default', body=deployment)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Create DeploymentRollback object\n",
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"This object is used to rollback to a previous version of the deployment."
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]
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},
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{
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},
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"outputs": [],
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"source": [
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"body = extensions.V1beta1Deployment()\n",
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"namespace = \"default\"\n",
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"\n",
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"deployment = client.V1beta1Deployment()\n",
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"deployment.metadata = client.V1ObjectMeta(name=\"jupyter\")\n",
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"spec = client.V1beta1DeploymentSpec()\n",
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"spec.template = client.V1PodTemplateSpec()\n",
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"spec.template.metadata = client.V1ObjectMeta()\n",
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"spec.template.spec = client.V1PodSpec()\n",
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"\n",
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"\n",
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"extensions.create_namespaced_deployment(namespace, body)"
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"rollback = client.ExtensionsV1beta1DeploymentRollback()\n",
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"rollback.api_version = 'extensions/v1beta1'\n",
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"rollback.kind = 'DeploymentRollback'\n",
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"rollback.rollback_to = client.ExtensionsV1beta1RollbackConfig()\n",
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"rollback.rollback_to.revision = 0\n",
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"rollback.name = 'nginx-deployment'"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Execute RollBack"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"extension.create_namespaced_deployment_rollback_rollback(name='nginx-deployment', namespace='default', body=rollback)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {
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"deletable": true,
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"editable": true
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},
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"source": [
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"### Delete Deployment"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": [
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"extension.delete_namespaced_deployment(name='nginx-deployment', namespace='default', body=client.V1DeleteOptions(propagation_policy='Foreground', grace_period_seconds=5))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true,
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"deletable": true,
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"editable": true
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},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython2",
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"version": "2.7.12"
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"version": "2.7.6"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 1
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"nbformat_minor": 2
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}

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