local k = import "ksonnet.beta.1/k.libsonnet";
local util = import "ksonnet.beta.1/util.libsonnet";

local container = k.core.v1.container;
local deployment = k.apps.v1beta1.deployment;

local nginxContainer =
  container.default("nginx", "nginx:1.13.0") +
  container.helpers.namedPort("http", 80);

util.prune(
  deployment.default("nginx-deployment", nginxContainer) +
    deployment.mixin.spec.template({metadata: {labels: {app: "nginx"}}}) +
    deployment.mixin.spec.replicas(2))

jsonnet -J ksonnet-lib/ deployment.jsonnet > deployment.yaml

deployment.yaml

ls

kubectl apply -f deployment.yaml

local k = import "ksonnet-lib/ksonnet.beta.1/k.libsonnet";

local container = k.core.v1.container;
local deployment = k.apps.v1beta1.deployment;

local nginxContainer =
  container.default("nginx", "nginx:1.7.9") +
  container.helpers.namedPort("http", 80);

deployment.default("nginx-deployment", nginxContainer) + deployment.mixin.spec.replicas(2)

jsonnet -J ksonnet-lib/ deployment.jsonnet

deployment.yaml

local k = import "ksonnet.beta.1/k.libsonnet";
local container = k.core.v1.container;
local deployment = k.apps.v1beta1.deployment;
local prune = k.util.prune;

local myDeployment(name, tag) =
  prune(deployment.default("%s-%s" % [name, tag],
    container.default("web", "%s:%s" % [name, tag]) +
    container.helpers.namedPort("www", 80)) +
    deployment.mixin.spec.template({metadata: {labels: {app: "nginx"}}}) +
    deployment.mixin.spec.replicas(2)
  );

[myDeployment("nginx", "v1.13.0"), myDeployment("nginx", "v1.12.0")]

jsonnet -J ksonnet-lib/ deployment.jsonnet

deployment.yaml