Full Code of thockin/micro-demos for AI

Repository: thockin/micro-demos
Branch: master
Commit: 893dccfb54b6
Files: 66
Total size: 63.4 KB

Directory structure:
gitextract_gkio4orz/

├── .github/
│   └── workflows/
│       └── assign.yaml
├── .gitignore
├── .travis.yml
├── LICENSE
├── README.md
├── cleanup.sh
├── config_maps/
│   ├── configmap.yaml
│   ├── demo.sh
│   └── pod.yaml
├── daemon_sets/
│   ├── daemon.yaml
│   ├── demo.sh
│   ├── split1_color_nodes.sh
│   ├── split1_hit_svc.sh
│   └── svc.yaml
├── demo-namespace.yaml
├── deployments/
│   ├── demo.sh
│   ├── deployment.yaml
│   ├── split1_control.sh
│   ├── split1_hit_svc.sh
│   ├── split1_watch.sh
│   └── svc.yaml
├── example.sh
├── graceful_termination/
│   ├── demo.sh
│   └── pod.yaml
├── init-containers/
│   ├── demo.sh
│   └── pod.yaml
├── jobs/
│   ├── demo.sh
│   └── job.yaml
├── mcs/
│   ├── demo.sh
│   ├── deploy1.yaml
│   ├── deploy2.yaml
│   ├── export.yaml
│   ├── reset.sh
│   ├── svc.yaml
│   ├── udemo.sh
│   └── vars.sh
├── pod_autoscalers/
│   └── demo.sh
├── pods/
│   ├── demo.sh
│   └── pod.yaml
├── pv-provisioning/
│   ├── claim.yaml
│   ├── demo.sh
│   └── pod.yaml
├── quota/
│   ├── demo.sh
│   ├── limits.yaml
│   ├── pod1.yaml
│   ├── pod2.yaml
│   └── quota.yaml
├── replicasets/
│   ├── demo.sh
│   └── rs.yaml
├── replication_controllers/
│   └── demo.sh
├── reset.sh
├── rolling_update/
│   ├── demo.sh
│   ├── rc-v1.yaml
│   ├── rc-v2.yaml
│   ├── split1_hit_svc.sh
│   ├── split1_update.sh
│   └── svc.yaml
├── secrets/
│   ├── demo.sh
│   ├── pod.yaml
│   └── secret.yaml
├── services/
│   ├── demo.sh
│   ├── service.yaml
│   ├── split1_hit_svc.sh
│   └── split1_scale.sh
├── setup.sh
└── util.sh

================================================
FILE CONTENTS
================================================

================================================
FILE: .github/workflows/assign.yaml
================================================
name: Assign

on:
  issues:
    types: [opened, reopened]
  pull_request_target:
    types: [opened, reopened]

jobs:
  assign:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v6
        with:
          script: |
            github.rest.issues.addAssignees({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              assignees: ['thockin']
            })


================================================
FILE: .gitignore
================================================
# OSX leaves these everywhere on SMB shares
._*

# OSX trash
.DS_Store

# Eclipse files
.classpath
.project
.settings/**

# Emacs save files
*~
\#*\#
.\#*

# Vim-related files
[._]*.s[a-w][a-z]
[._]s[a-w][a-z]
*.un~
Session.vim
.netrwhist



================================================
FILE: .travis.yml
================================================
sudo: required

services:
  - docker

language: go

matrix:
  include:
    - go: 1.9

install:
  - mkdir -p $HOME/gopath/src/k8s.io
  - mv $TRAVIS_BUILD_DIR $HOME/gopath/src/k8s.io/contrib
  - hack/install-verify-tools.sh
  - export PATH=$GOPATH/bin:$PATH
  - hack/for-go-proj.sh install

script:
  - hack/verify-all.sh -v
  - hack/for-go-proj.sh test

notifications:
  irc: "chat.freenode.net#kubernetes-dev"


================================================
FILE: LICENSE
================================================

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================================================
FILE: README.md
================================================
# Kubernetes micro-demos

This is a collection of highly-targetted demonstrations of Kubernetes features.
The demos are all text-based and automated, making them perfect for customer
meetings, meetups, or just showing off to your colleagues.

## Running the demos

To run these demos you need `pv` and `tmux` installed, and you need `kubectl`
in your PATH.

Some of the demos try to act in faster-than-real time.  For best results:
  * SSH to your kubernetes-master and set the following flags (in this order):
    * kube-controllermanager: --pod-eviction-timeout=10s

Before running a demo, make sure your cluster is demo-ready.  The `reset.sh`
script is provided for that.

## Writing new demos

Each demo lives in its own directory.  The bulk of the logic lives in
`util.sh`.

Demos should be small and focused - 2 to 3 minutes each.

Demos should be repeatable.  Make sure you are not relying on timing effects.
If you need to `sleep`, you might have a problem.

Demos should be self-contained.  If you are depending on something being done
before-hand, don't.  Do it in the demo script.

Demos should be single-terminal.  Use `tmux` to split the window to show
multiple parallel things.



================================================
FILE: cleanup.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/util.sh

desc "Nuke it all"
run "kubectl delete namespace demos"
while kubectl get namespace demos >/dev/null 2>&1; do
  run "kubectl get namespace demos"
done
run "kubectl get namespace demos"
run "kubectl get namespaces"
tmux kill-session -t my-session >/dev/null 2>&1


================================================
FILE: config_maps/configmap.yaml
================================================
apiVersion: v1
kind: ConfigMap
metadata:
  namespace: demos
  name: my-app-config
data:
  cfg-version: "93"
  min-power: "1"
  max-power: "100"
  objective: "world domination"


================================================
FILE: config_maps/demo.sh
================================================
#!/bin/bash

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a config map"
run "cat $(relative configmap.yaml)"
run "kubectl --namespace=demos create -f $(relative configmap.yaml)"

desc "Create a pod which uses that config map"
run "cat $(relative pod.yaml)"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

while true; do
    run "kubectl --namespace=demos get pod configmaps-demo-pod"
    status=$(kubectl --namespace=demos get pod configmaps-demo-pod | tail -1 | awk '{print $3}')
    if [ "$status" == "Running" ]; then
        break
    fi
done
run "kubectl --namespace=demos exec --tty -i configmaps-demo-pod sh"


================================================
FILE: config_maps/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: configmaps-demo-pod
spec:
  containers:
  - name: busybox
    image: busybox
    command:
    - sh
    - -c
    - while true; do sleep 3600; done
    volumeMounts:
    - name: my-config
      mountPath: /etc/config
  volumes:
  - name: my-config
    configMap:
      name: my-app-config


================================================
FILE: daemon_sets/daemon.yaml
================================================
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  namespace: demos
  name: daemons-demo
spec:
  template:
    metadata:
      labels:
        demo: daemons
    spec:
      nodeSelector:
        color: red
      containers:
      - name: hostname
        image: k8s.gcr.io/serve_hostname:1.1


================================================
FILE: daemon_sets/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

for NODE in $(kubectl get nodes -o name | cut -f2 -d/); do
    kubectl label node $NODE color- --overwrite >/dev/null 2>&1
done

desc "No labels on nodes"
run "kubectl get nodes \\
    -o go-template='{{range .items}}{{.metadata.name}}{{\"\t\"}}{{.metadata.labels}}{{\"\n\"}}{{end}}'"

desc "Run a service to front our daemon"
run "cat $(relative svc.yaml)"
run "kubectl --namespace=demos create -f $(relative svc.yaml)"

desc "Run our daemon"
run "cat $(relative daemon.yaml)"
run "kubectl --namespace=demos create -f $(relative daemon.yaml) --validate=false"
run "kubectl --namespace=demos describe ds daemons-demo"

tmux new -d -s my-session \
    "$(dirname ${BASH_SOURCE})/split1_color_nodes.sh" \; \
    split-window -v -d "$(dirname $BASH_SOURCE)/split1_hit_svc.sh" \; \
    attach \;


================================================
FILE: daemon_sets/split1_color_nodes.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

run "" # wait for first input
desc "Color each node"
for NODE in $(kubectl get nodes -o name | grep -v master | cut -f2 -d/); do
    run "kubectl label node $NODE color=red"
    run "kubectl --namespace=demos describe ds daemons-demo | head"
done


================================================
FILE: daemon_sets/split1_hit_svc.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

IP=$(kubectl --namespace=demos get svc daemon-demo \
        -o go-template='{{.spec.clusterIP}}')

run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    while true; do \\
        curl --connect-timeout 1 -s $IP && echo || echo \"(timeout)\"; \\
        sleep 1; \\
    done \\
    '"


================================================
FILE: daemon_sets/svc.yaml
================================================
apiVersion: v1
kind: Service
metadata:
  namespace: demos
  name: daemon-demo
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 9376
  selector:
    demo: daemons


================================================
FILE: demo-namespace.yaml
================================================
apiVersion: v1
kind: Namespace
metadata:
  name: demos


================================================
FILE: deployments/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a service that fronts any version of this demo"
run "cat $(relative svc.yaml)"
run "kubectl --namespace=demos apply -f $(relative svc.yaml)"

desc "Deploy v1 of our app"
run "cat $(relative deployment.yaml)"
run "kubectl --namespace=demos apply -f $(relative deployment.yaml)"

# The output of describe is too wide, uncomment the following if needed.
# desc "Check it"
# run "kubectl --namespace=demos describe deployment deployment-demo"

tmux new -d -s my-session \
    "$(dirname $BASH_SOURCE)/split1_control.sh" \; \
    split-window -v -p 66 "$(dirname ${BASH_SOURCE})/split1_hit_svc.sh" \; \
    split-window -v "$(dirname ${BASH_SOURCE})/split1_watch.sh v1" \; \
    split-window -h -d "$(dirname ${BASH_SOURCE})/split1_watch.sh v2" \; \
    select-pane -t 0 \; \
    attach \;


================================================
FILE: deployments/deployment.yaml
================================================
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: deployment-demo
  namespace: demos
spec:
  selector:
    matchLabels:
      demo: deployment
  replicas: 5
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      labels:
        demo: deployment
        version: v1
    spec:
      containers:
      - name: busybox
        image: busybox
        command: [ "sh", "-c", "while true; do echo $(hostname) v1 > /data/index.html; sleep 60; done" ]
        volumeMounts:
        - name: content
          mountPath: /data
      - name: nginx
        image: nginx
        volumeMounts:
          - name: content
            mountPath: /usr/share/nginx/html
            readOnly: true
      volumes:
      - name: content


================================================
FILE: deployments/split1_control.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

run "" # wait for first input
desc "Update the deployment"
run "cat $(relative deployment.yaml) | sed 's/ v1/ v2/g' | kubectl --namespace=demos apply -f-"
desc "Rollback the deployment"
run "kubectl --namespace=demos rollout undo deployment deployment-demo"


================================================
FILE: deployments/split1_hit_svc.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

IP=$(kubectl --namespace=demos get svc deployment-demo \
        -o go-template='{{.spec.clusterIP}}')

run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    while true; do \\
        curl --connect-timeout 1 -s $IP; \\
        sleep 0.5; \\
    done \\
    '"


================================================
FILE: deployments/split1_watch.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

target="$1"

while true; do
  kubectl --namespace=demos get rs -l demo=deployment \
      -o go-template='{{range .items}}{{.metadata.name}} {{.metadata.labels}}{{"\n"}}{{end}}' \
      | while read NAME LABELS; do
    if echo "$LABELS" | grep -q "$target"; then
      trap "exit" INT
      while true; do
        kubectl --namespace=demos get rs "$NAME" \
            -o go-template="$target Desired: {{.spec.replicas}} Running: {{.status.replicas}}{{\"\n\"}}"
        sleep 0.3
      done
      exit 0
    fi
  done
done


================================================
FILE: deployments/svc.yaml
================================================
apiVersion: v1
kind: Service
metadata:
  namespace: demos
  name: deployment-demo
spec:
  ports:
  - port: 80
    protocol: TCP
  selector:
    demo: deployment


================================================
FILE: example.sh
================================================
#!/bin/bash
# Copyright 2024 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/util.sh

desc "This is a comment.  It will be printed, but not through the typing simulator."
desc "After this it will run a command."
desc "After each command, it will wait for <enter> to proceed."
run "date"
run "sleep 1"
desc_type "This one will be printed through the typing simulator."
run "date"
desc "If you set \$DEMO_RUN_FAST=1, the typing will go faster"
DEMO_RUN_FAST=1
run "echo \"this is a long command which would have taken a while to type out\""
desc "If you set \$DEMO_RUN_SPEED to a value between 1 and 1000, the typing will go slower or faster"
DEMO_RUN_SPEED=5
run "echo \"this is DEMO_RUN_SPEED=5\""
DEMO_RUN_SPEED=25
run "echo \"this is DEMO_RUN_SPEED=25, which is the default\""
DEMO_RUN_SPEED=100
run "echo \"this is DEMO_RUN_SPEED=100, which is fast enough to need more text here\""
desc "If you set \$DEMO_AUTO_RUN=1 it will not wait for input between commands"
DEMO_AUTO_RUN=1
run "echo \"This is the first command\""
run "echo \"This is the second command\""
run "echo \"This is the third command\""
unset DEMO_AUTO_RUN
desc "The output of the last command is in \$DEMO_RUN_STDOUT if you need it"
run "date"
run "echo \"$DEMO_RUN_STDOUT\""
desc "At the end it will wait for one last <enter>."


================================================
FILE: graceful_termination/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a pod"
run "cat $(relative pod.yaml)"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

desc "Hey look, a pod!"
run "kubectl --namespace=demos get pods"

desc "Get the pod's logs"
run "kubectl --namespace=demos logs graceful-demo --follow"

desc "Delete the pod"
run "kubectl --namespace=demos delete pod graceful-demo"
run "kubectl --namespace=demos get pods graceful-demo"

desc "Get the pod's logs"
run "kubectl --namespace=demos logs graceful-demo --follow"


================================================
FILE: graceful_termination/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: graceful-demo
  labels:
    demo: graceful-termination
spec:
  terminationGracePeriodSeconds: 15
  containers:
  - name: busybox
    image: busybox
    command:
    - sh
    - -c
    - "trap \"while true; do echo 'self destructing'; sleep 1; done\" SIGTERM; while true; do date; sleep 1; done"


================================================
FILE: init-containers/demo.sh
================================================
#!/bin/bash
# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a Pod with init containers"
run "cat $(relative pod.yaml)"
run "kubectl -n demos create -f $(relative pod.yaml)"

desc "See what happened"
run "kubectl -n demos exec -ti init-ctr-demo -c busybox cat /data/file"

desc "Clean up"
run "kubectl -n demos delete pod init-ctr-demo"


================================================
FILE: init-containers/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  name: init-ctr-demo
  namespace: demos
spec:
  volumes:
  - name: data
    emptyDir: {}
  initContainers:
  - name: init-1
    image: busybox
    command: [ "sh", "-c", "echo start 1 >> /data/file" ]
    volumeMounts:
    - name: data
      mountPath: /data
  - name: init-2
    image: busybox
    command: [ "sh", "-c", "echo start 2 >> /data/file" ]
    volumeMounts:
    - name: data
      mountPath: /data
  containers:
  - name: busybox
    image: busybox
    command: [ "sh", "-c", "sleep 1000" ]
    volumeMounts:
    - name: data
      mountPath: /data


================================================
FILE: jobs/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Run some pods in a job"
run "cat $(relative job.yaml)"
run "kubectl --namespace=demos create -f $(relative job.yaml)"

desc "See what we did"
run "kubectl --namespace=demos describe job jobs-demo"

desc "See pods run"
while [ "$(kubectl --namespace=demos get job jobs-demo -o go-template='{{.status.succeeded}}')" != 15 ]; do
	run "kubectl --namespace=demos get pods -l demo=jobs"
	run "kubectl --namespace=demos describe job jobs-demo"
done

desc "Final status"
run "kubectl --namespace=demos get pods --show-all -l demo=jobs --sort-by='{.status.phase}'"


================================================
FILE: jobs/job.yaml
================================================
apiVersion: extensions/v1beta1
kind: Job
metadata:
  name: jobs-demo
  namespace: demos
spec:
  selector:
    matchLabels:
      demo: jobs
  parallelism: 5
  completions: 15
  template:
    metadata:
      labels:
        demo: jobs
    spec:
      containers:
      - name: sleep
        image: busybox
        command: ["sh", "-c", "sleep 5; if [ $((RANDOM % 4)) -eq 0 ]; then exit 1; fi"]
      restartPolicy: Never


================================================
FILE: mcs/demo.sh
================================================
#!/bin/bash

. $(dirname ${BASH_SOURCE})/udemo.sh
. $(dirname ${BASH_SOURCE})/vars.sh

GCLOUD="gcloud --project=$PRJ"
K1="kubectl --context=$CTX1"
K2="kubectl --context=$CTX2"

desc "look ma, clusters!"
run "$GCLOUD container clusters list"
desc "they are registered in an environ"
run "$GCLOUD container hub memberships list"

desc "but they are empty"
run "$K1 get ns"
run "$K2 get ns"

desc "make namespaces for the demo"
run "$K1 create ns demo"
run "$K2 create ns demo"

desc "let's deploy a service"
run "cat $(relative deploy1.yaml)"
run "$K1 -n demo apply -f $(relative deploy1.yaml)"
run "$K1 -n demo expose deploy msg --port=80 --target-port=9376"

desc "prove it"
run "$K1 -n demo run -ti --rm --restart=Never --image=busybox shell-$RANDOM -- wget -qO- msg"

desc "now for some fun"
run "$K1 get crd"
desc "export the service and import it into demo2"
run "cat $(relative export.yaml)"
run "$K1 -n demo apply -f $(relative export.yaml)"

desc "see - it got imported"
run "$K1 -n demo get importedservice"
desc "even in the other cluster"
run "$K2 -n demo get importedservice"
desc "here's the WOW"
run "$K2 -n demo run -ti --rm --restart=Never --image=busybox shell-$RANDOM -- wget -qO- 10.255.255.254"
desc "even better"
run "$K2 -n demo run -ti --rm --restart=Never --image=busybox shell-$RANDOM -- wget -qO- msg.demo.svc.supercluster.local"

desc "let's go even farther"
run "cat $(relative deploy2.yaml)"
run "$K2 -n demo apply -f $(relative deploy2.yaml)"
run "$K2 -n demo expose deploy msg --port=80 --target-port=9376"
run "$K2 -n demo apply -f $(relative export.yaml)"

desc "and the coup de grace"
run "$K2 -n demo run -ti --rm --restart=Never --image=busybox shell-$RANDOM -- sh -c \"for i in \\\$(seq 1 10); do wget -qO- msg.demo.svc.supercluster.local; done\""


================================================
FILE: mcs/deploy1.yaml
================================================
apiVersion: apps/v1
kind: Deployment
metadata:
  name: msg
  namespace: demo
spec:
  replicas: 1
  selector:
    matchLabels:
      app: msg
  template:
    metadata:
      labels:
        app: msg
    spec:
      containers:
      - name: serve-msg
        image: thockin/serve-msg
        args: [ "hello from cluster 1" ]


================================================
FILE: mcs/deploy2.yaml
================================================
apiVersion: apps/v1
kind: Deployment
metadata:
  name: msg
  namespace: demo
spec:
  replicas: 1
  selector:
    matchLabels:
      app: msg
  template:
    metadata:
      labels:
        app: msg
    spec:
      containers:
      - name: serve-msg
        image: thockin/serve-msg
        args: [ "hello from cluster 2" ]


================================================
FILE: mcs/export.yaml
================================================
kind: ServiceExport
apiVersion: net.gke.io/v1alpha1
metadata:
  name: msg
  namespace: demo
spec:
  superclusterIP: 10.255.255.254


================================================
FILE: mcs/reset.sh
================================================
#!/bin/bash

. $(dirname ${BASH_SOURCE})/vars.sh

kubectl --context=$CTX1 delete namespace demo --wait=false
kubectl --context=$CTX2 delete namespace demo --wait=false


================================================
FILE: mcs/svc.yaml
================================================
apiVersion: v1
kind: Service
metadata:
  name: msg
  namespace: demo
spec:
  ports:
  - port: 80
    targetPort: 9376
  selector:
    app: msg


================================================
FILE: mcs/udemo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

readonly  reset=$(tput sgr0)
readonly  green=$(tput bold; tput setaf 2)
readonly yellow=$(tput bold; tput setaf 3)
readonly   blue=$(tput bold; tput setaf 6)
readonly timeout=$(if [ "$(uname)" == "Darwin" ]; then echo "1"; else echo "0.1"; fi) 

function desc() {
    maybe_first_prompt
    echo "$blue# $@$reset"
    prompt
}

function prompt() {
    echo
    echo -n "$yellow\$ $reset"
}

started=""
function maybe_first_prompt() {
    if [ -z "$started" ]; then
        prompt
        started=true
    fi
}

# After a `run` this variable will hold the stdout of the command that was run.
# If the command was interactive, this will likely be garbage.
DEMO_RUN_STDOUT=""

function run() {
    maybe_first_prompt
    rate=25
    if [ -n "$DEMO_RUN_FAST" ]; then
      rate=1000
    fi
    echo "$green$1$reset" | pv -qL $rate
    if [ -n "$DEMO_RUN_FAST" ]; then
      sleep 0.5
    fi
    OFILE="$(mktemp -t $(basename $0).XXXXXX)"
    script -eq -c "$1" -f "$OFILE"
    r=$?
    read -d '' -t "${timeout}" -n 10000 # clear stdin
    prompt
    if [ -z "$DEMO_AUTO_RUN" ]; then
      read -s
    fi
    DEMO_RUN_STDOUT="$(tail -n +2 $OFILE | sed 's/\r//g')"
    return $r
}

function relative() {
    for arg; do
        echo "$(realpath $(dirname $(which $0)))/$arg" | sed "s|$(realpath $(pwd))|.|"
    done
}

trap "echo" EXIT


================================================
FILE: mcs/vars.sh
================================================
#!/bin/bash

PRJ=thockin-dev-2
CTX1="demo1"
CTX2="demo2"


================================================
FILE: pod_autoscalers/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Run some pods under a replication controller"
run "kubectl --namespace=demos run yes-autoscaler-demo \\
    --image=busybox \\
    --replicas=1 \\
    --limits=cpu=100m \\
    -o name \\
    -- sh -c 'sleep 5; yes > /dev/null'"
WHAT_WAS_RUN="$DEMO_RUN_STDOUT"

desc "Look what I made!"
run "kubectl --namespace=demos describe $WHAT_WAS_RUN"

desc "One pod was created"
run "kubectl --namespace=demos get pods -l run=yes-autoscaler-demo"

desc "Create a pod autoscaler"
run "kubectl --namespace=demos autoscale $WHAT_WAS_RUN --min=1 --max=10 --cpu-percent=25"

desc "Watch pods get created"
while true; do
    run "kubectl --namespace=demos describe hpa yes-autoscaler-demo"
    run "kubectl --namespace=demos get pods -l run=yes-autoscaler-demo"
done


================================================
FILE: pods/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "There are no running pods"
run "kubectl --namespace=demos get pods"

desc "Create a pod"
run "cat $(relative pod.yaml)"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

desc "Hey look, a pod!"
run "kubectl --namespace=demos get pods"

desc "Get the pod's IP"
run "kubectl --namespace=demos get pod pods-demo -o yaml | grep podIP"

IP=$(kubectl --namespace=demos get pod pods-demo -o yaml \
        | grep podIP \
        | cut -f2 -d:)
desc "SSH into my cluster and access the pod"
run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    for i in \$(seq 1 10); do \\
        curl --connect-timeout 1 -s $IP; \\
        sleep 1; \\
    done\\
    '"


================================================
FILE: pods/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: pods-demo
  labels:
    demo: pods
spec:
  containers:
  - name: busybox
    image: busybox
    command:
    - sh
    - -c
    - while true; do (hostname; date) > /data/index.html; sleep 1; done
    volumeMounts:
    - name: content
      mountPath: /data
  - name: nginx
    image: nginx
    volumeMounts:
      - name: content
        mountPath: /usr/share/nginx/html
        readOnly: true
  volumes:
  - name: content


================================================
FILE: pv-provisioning/claim.yaml
================================================
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  namespace: demos
  name: pv-provisioning-demo
  labels:
    demo: pv-provisioning
  annotations:
    volume.alpha.kubernetes.io/storage-class: anything
spec:
  accessModes: [ "ReadWriteOnce" ]
  resources:
    requests:
      storage: 10Gi



================================================
FILE: pv-provisioning/demo.sh
================================================
#!/bin/bash
# Copyright 2015 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


. $(dirname ${BASH_SOURCE})/../util.sh

desc "There are no claims"
run "kubectl --namespace=demos get pvc"

desc "Create a claim"
run "cat $(relative claim.yaml)"
run "kubectl --namespace=demos create -f $(relative claim.yaml)"

desc "Check it out"
run "kubectl --namespace=demos describe pvc pv-provisioning-demo"

desc "Wait for it to be satisfied"
run "while true; do
    X=\$(kubectl --namespace=demos get pvc pv-provisioning-demo);
    echo \"\$X\";
    echo \$X | grep Bound >/dev/null && break;
    sleep 1;
    done"

desc "You can see it in gcloud"
run "gcloud compute disks list | grep kubernetes-dynamic"

desc "Create a pod using the claim"
run "cat $(relative pod.yaml)"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

desc "Here's the pod"
run "kubectl --namespace=demos describe pods -l demo=pv-provisioning"

desc "Wait for it to be running"
run "while true; do
    X=\$(kubectl --namespace=demos get pods -l demo=pv-provisioning);
    echo \"\$X\";
    echo \$X | grep Running >/dev/null && break;
    sleep 1;
    done"

POD=$(kubectl --namespace=demos get pods -l demo=pv-provisioning -o name | cut -d/ -f2)
desc "Shell into it"
run "kubectl --namespace=demos exec --tty -i $POD sh"

desc "Kill the pod"
run "kubectl --namespace=demos delete pods -l demo=pv-provisioning"
run "kubectl --namespace=demos get pods -l demo=pv-provisioning"

desc "The claim still exists"
run "kubectl --namespace=demos describe pvc pv-provisioning-demo"

desc "The disk still exists"
run "gcloud compute disks list | grep kubernetes-dynamic"

desc "Run another pod using the same claim"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

desc "Wait for it to be running"
run "while true; do
    X=\$(kubectl --namespace=demos get pods -l demo=pv-provisioning);
    echo \"\$X\";
    echo \$X | grep Running >/dev/null && break;
    sleep 1;
    done"

POD=$(kubectl --namespace=demos get pods -l demo=pv-provisioning -o name | cut -d/ -f2)
desc "Shell into the new one"
run "kubectl --namespace=demos exec --tty -i $POD sh"

desc "Tear it down"
run "kubectl --namespace=demos delete pods -l demo=pv-provisioning"
run "kubectl --namespace=demos get pods -l demo=pv-provisioning"
run "kubectl --namespace=demos delete pvc -l demo=pv-provisioning"
run "kubectl --namespace=demos get pvc -l demo=pv-provisioning"
run "kubectl --namespace=demos get pv"


================================================
FILE: pv-provisioning/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  generateName: pv-provisioning-demo-
  labels:
    demo: pv-provisioning
spec:
  terminationGracePeriodSeconds: 0
  containers:
  - name: busybox
    image: busybox
    command:
    - sh
    - -c
    - touch /pv/`hostname`; while true; do sleep 3600; done
    volumeMounts:
    - name: pv
      mountPath: /pv
  volumes:
  - name: pv
    persistentVolumeClaim:
      claimName: pv-provisioning-demo


================================================
FILE: quota/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "There is no quota"
run "kubectl --namespace=demos get quota"

desc "Install quota"
run "cat $(relative quota.yaml)"
run "kubectl --namespace=demos create -f $(relative quota.yaml)"
run "kubectl --namespace=demos describe quota demo-quota"

desc "Create a large pod - should fail"
run "cat $(relative pod1.yaml)"
run "kubectl --namespace=demos create -f $(relative pod1.yaml)"
run "kubectl --namespace=demos describe quota demo-quota"

desc "Create a pod with no limits - should fail"
run "cat $(relative pod2.yaml)"
run "kubectl --namespace=demos create -f $(relative pod2.yaml)"
run "kubectl --namespace=demos describe quota demo-quota"

desc "There are no default limits"
run "kubectl --namespace=demos get limits"

desc "Set default limits"
run "cat $(relative limits.yaml)"
run "kubectl --namespace=demos create -f $(relative limits.yaml)"
run "kubectl --namespace=demos describe limits demo-limits"

desc "Create a pod with no limits - should succeed now"
run "cat $(relative pod2.yaml)"
run "kubectl --namespace=demos create -f $(relative pod2.yaml)"
run "kubectl --namespace=demos describe quota demo-quota"


================================================
FILE: quota/limits.yaml
================================================
apiVersion: v1
kind: LimitRange
metadata:
  name: demo-limits
  namespace: demos
spec:
  limits:
  - type: Container
    defaultRequest:
      cpu: 100m
      memory: 256Mi


================================================
FILE: quota/pod1.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: quota-demo-large
spec:
  containers:
  - name: hostname
    image: k8s.gcr.io/serve_hostname:1.1
    resources:
      limits:
        cpu: 4.1
        memory: 4.1Gi


================================================
FILE: quota/pod2.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: quota-demo-unspecified
spec:
  containers:
  - name: hostname
    image: k8s.gcr.io/serve_hostname:1.1


================================================
FILE: quota/quota.yaml
================================================
apiVersion: v1
kind: ResourceQuota
metadata:
  name: demo-quota
  namespace: demos
spec:
  hard:
    cpu: 4
    memory: 4Gi


================================================
FILE: replicasets/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Run some pods under a replica set"
run "cat $(relative rs.yaml)"
run "kubectl --namespace=demos create -f $(relative rs.yaml) --validate=false"
desc "Look what I made!"
run "kubectl --namespace=demos get replicasets"

desc "These are the pods that were created"
run "kubectl --namespace=demos get pods -l run=hostnames"

trap "" SIGINT

desc "Kill a pod"
VICTIM=$(kubectl --namespace=demos get pods -o name -l run=hostnames | tail -1)
run "kubectl --namespace=demos delete $VICTIM"
run "kubectl --namespace=demos get pods -l run=hostnames"

desc "Check on which nodes the pods are running"
run "kubectl --namespace=demos get pods -l run=hostnames -o wide"
desc "Kill a node"
NODE=$(kubectl --namespace=demos get pods -l run=hostnames -o wide \
               | tail -1 \
               | awk '{print $NF}')

run "gcloud compute ssh --zone=us-central1-b $NODE --command '\\
    sudo shutdown -r now; \\
    '"
while true; do
    run "kubectl --namespace=demos get node $NODE"
    # TODO: It's possible the two runs get different results. Need to get the output of run.
    status=$(kubectl --namespace=demos get node $NODE | tail -1 | awk '{print $2}')
    if [ "$status" == "NotReady" ]; then
        break
    fi
done

while true; do
    run "kubectl --namespace=demos get pods -l run=hostnames -o wide"
    pods_on_restarting_node=$(kubectl --namespace=demos get pods -l run=hostnames -o wide | grep $NODE)
    if [ -z "${pods_on_restarting_node}" ]; then
        break
    fi
done


================================================
FILE: replicasets/rs.yaml
================================================
apiVersion: extensions/v1beta1
kind: ReplicaSet
metadata:
  name: hostnames 
spec:
  replicas: 5 
  selector:
    matchLabels:
      run: hostnames
  template:
    metadata:
      labels:
        run: hostnames
    spec:
      containers:
      - name: demo 
        image: k8s.gcr.io/serve_hostname:1.1


================================================
FILE: replication_controllers/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Run some pods under a replication controller"
run "kubectl --namespace=demos run hostnames \\
    --image=k8s.gcr.io/serve_hostname:1.1 \\
    --replicas=5 \\
    -o name"
WHAT_WAS_RUN="$DEMO_RUN_STDOUT"

desc "Look what I made!"
run "kubectl --namespace=demos describe $WHAT_WAS_RUN"

desc "These are the pods that were created"
run "kubectl --namespace=demos get pods -l run=hostnames"

IPS=($(kubectl --namespace=demos get pods -l run=hostnames \
          -o go-template='{{range .items}}{{.status.podIP}}{{"\n"}}{{end}}'))
desc "SSH into my cluster and access the pods"
run "kubectl --namespace=demos get pods -l run=hostnames \\
    -o go-template='{{range .items}}{{.status.podIP}}{{\"\\n\"}}{{end}}'"
run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    for IP in ${IPS[*]}; do \\
        curl --connect-timeout 1 -s \$IP:9376 && echo; \\
    done \\
    '"

desc "Kill a pod"
VICTIM=$(kubectl --namespace=demos get pods -o name -l run=hostnames | tail -1)
run "kubectl --namespace=demos delete $VICTIM"
run "kubectl --namespace=demos get pods -l run=hostnames"
run "kubectl --namespace=demos describe $WHAT_WAS_RUN"

desc "Kill a node"
NODE=$(kubectl --namespace=demos get pods -l run=hostnames -o wide \
               | tail -1 \
               | awk '{print $NF}')
run "kubectl --namespace=demos get pods -l run=hostnames -o wide"
run "gcloud compute ssh --zone=us-central1-b $NODE --command '\\
    sudo shutdown -r now; \\
    '"
while true; do
    run "kubectl --namespace=demos get node $NODE"
    status=$(kubectl --namespace=demos get node $NODE | tail -1 | awk '{print $2}')
    if [ "$status" == "NotReady" ]; then
        break
    fi
done
run "kubectl --namespace=demos get pods -l run=hostnames -o wide"
run "kubectl --namespace=demos describe $WHAT_WAS_RUN"


================================================
FILE: reset.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/util.sh
kubectl delete namespace demos
while kubectl get namespace demos >/dev/null 2>&1; do
   kubectl get namespace demos
done
kubectl apply -f $(relative demo-namespace.yaml)
tmux kill-session -t my-session


================================================
FILE: rolling_update/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a service that fronts any version of this demo"
run "cat $(relative svc.yaml)"
run "kubectl --namespace=demos create -f $(relative svc.yaml)"

desc "Run v1 of our app"
run "cat $(relative rc-v1.yaml)"
run "kubectl --namespace=demos create -f $(relative rc-v1.yaml)"

tmux new -d -s my-session \
    "sleep 10; $(dirname ${BASH_SOURCE})/split1_update.sh" \; \
    split-window -h -d "$(dirname $BASH_SOURCE)/split1_hit_svc.sh" \; \
    attach \;


================================================
FILE: rolling_update/rc-v1.yaml
================================================
apiVersion: v1
kind: ReplicationController
metadata:
  namespace: demos
  name: update-demo-v1
spec:
  replicas: 5
  selector:
    demo: update
    demo-version: v1
  template:
    metadata:
      labels:
        demo: update
        demo-version: v1
    spec:
      containers:
      - name: busybox
        image: busybox
        command:
        - sh
        - -c
        - while true; do echo "$(hostname) v1" > /data/index.html; sleep 60; done
        volumeMounts:
        - name: content
          mountPath: /data
      - name: nginx
        image: nginx
        volumeMounts:
          - name: content
            mountPath: /usr/share/nginx/html
            readOnly: true
      volumes:
      - name: content


================================================
FILE: rolling_update/rc-v2.yaml
================================================
apiVersion: v1
kind: ReplicationController
metadata:
  namespace: demos
  name: update-demo-v2
spec:
  replicas: 5
  selector:
    demo: update
    demo-version: v2
  template:
    metadata:
      labels:
        demo: update
        demo-version: v2
    spec:
      containers:
      - name: busybox
        image: busybox
        command:
        - sh
        - -c
        - while true; do echo "$(hostname) v2" > /data/index.html; sleep 60; done
        volumeMounts:
        - name: content
          mountPath: /data
      - name: nginx
        image: nginx
        volumeMounts:
          - name: content
            mountPath: /usr/share/nginx/html
            readOnly: true
      volumes:
      - name: content


================================================
FILE: rolling_update/split1_hit_svc.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

IP=$(kubectl --namespace=demos get svc update-demo \
        -o go-template='{{.spec.clusterIP}}')

run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    while true; do \\
        curl --connect-timeout 1 -s $IP; \\
        sleep 0.5; \\
    done \\
    '"


================================================
FILE: rolling_update/split1_update.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Do a rolling update to v2"
run "cat $(relative rc-v2.yaml)"
run "kubectl --namespace=demos rolling-update \\
    update-demo-v1 -f $(relative rc-v2.yaml) --update-period=5s"


================================================
FILE: rolling_update/svc.yaml
================================================
apiVersion: v1
kind: Service
metadata:
  namespace: demos
  name: update-demo
spec:
  ports:
  - port: 80
    protocol: TCP
  selector:
    demo: update


================================================
FILE: secrets/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Create a secret"
run "cat $(relative secret.yaml)"
run "kubectl --namespace=demos create -f $(relative secret.yaml)"

desc "Create a pod which uses that secret"
run "cat $(relative pod.yaml)"
run "kubectl --namespace=demos create -f $(relative pod.yaml)"

while true; do
    run "kubectl --namespace=demos get pod secrets-demo"
    status=$(kubectl --namespace=demos get pod secrets-demo | tail -1 | awk '{print $3}')
    if [ "$status" == "Running" ]; then
        break
    fi
done
run "kubectl --namespace=demos exec --tty -i secrets-demo sh"


================================================
FILE: secrets/pod.yaml
================================================
apiVersion: v1
kind: Pod
metadata:
  namespace: demos
  name: secrets-demo
spec:
  containers:
  - name: busybox
    image: busybox
    command:
    - sh
    - -c
    - while true; do sleep 3600; done
    volumeMounts:
    - name: my-password
      mountPath: /data
  volumes:
  - name: my-password
    secret:
      secretName: my-secret-password


================================================
FILE: secrets/secret.yaml
================================================
apiVersion: v1
kind: Secret
metadata:
  namespace: demos
  name: my-secret-password
type: opaque
data:
  username: dGhvY2tpbgo=
  password: eW91IHdpc2gK


================================================
FILE: services/demo.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

desc "Run some pods"
run "kubectl --namespace=demos run hostnames-svc \\
    --image=k8s.gcr.io/serve_hostname:1.1 \\
    --replicas=5 \\
    -o name"
WHAT_WAS_RUN="$DEMO_RUN_STDOUT"

desc "Expose the result as a service"
run "kubectl --namespace=demos expose $WHAT_WAS_RUN \\
    --port=80 --target-port=9376"

desc "Have a look at the service"
run "kubectl --namespace=demos describe svc hostnames-svc"

IP=$(kubectl --namespace=demos get svc hostnames-svc \
    -o go-template='{{.spec.clusterIP}}')
desc "See what happens when you access the service's IP"
run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    for i in \$(seq 1 10); do \\
        curl --connect-timeout 1 -s $IP && echo; \\
    done \\
    '"
run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    for i in \$(seq 1 500); do \\
        curl --connect-timeout 1 -s $IP && echo; \\
    done | sort | uniq -c; \\
    '"

tmux new -d -s my-session \
    "sleep 10; $(dirname ${BASH_SOURCE})/split1_scale.sh $WHAT_WAS_RUN" \; \
    split-window -h -d "$(dirname $BASH_SOURCE)/split1_hit_svc.sh $WHAT_WAS_RUN" \; \
    attach \;


================================================
FILE: services/service.yaml
================================================
apiVersion: v1
kind: Service
metadata:
  name: hostnames 
spec:
  ports:
    - port: 80
      targetPort: 9376
  selector:
    run: hostnames


================================================
FILE: services/split1_hit_svc.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

IP=$(kubectl --namespace=demos get svc hostnames-svc \
        -o go-template='{{.spec.clusterIP}}')

run "gcloud compute ssh --zone=us-central1-b $SSH_NODE --command '\\
    while true; do \\
        curl --connect-timeout 1 -s $IP && echo; \\
        sleep 0.5; \\
    done \\
    '"


================================================
FILE: services/split1_scale.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/../util.sh

WHAT_WAS_RUN="$1"

desc "Resize the RC and watch the service backends change"
run "kubectl --namespace=demos scale $WHAT_WAS_RUN --replicas=1"
run "kubectl --namespace=demos scale $WHAT_WAS_RUN --replicas=2"
run "kubectl --namespace=demos scale $WHAT_WAS_RUN --replicas=5"

desc "Fire up a cloud load-balancer"
run "kubectl --namespace=demos get svc hostnames-svc -o yaml \\
    | sed 's/ClusterIP/LoadBalancer/' \\
    | kubectl replace -f -"
while true; do
    run "kubectl --namespace=demos get svc hostnames -o yaml | grep loadBalancer -A 4"
    if kubectl --namespace=demos get svc hostnames \
        -o go-template='{{index (index .status.loadBalancer.ingress 0) "ip"}}' \
        >/dev/null 2>&1; then
        break
    fi
done


================================================
FILE: setup.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. $(dirname ${BASH_SOURCE})/util.sh

desc "The demo namespace does not exist"
run "kubectl get namespaces"

desc "Create a namespace for these demos"
run "cat $(relative demo-namespace.yaml)"
run "kubectl apply -f $(relative demo-namespace.yaml)"

desc "Hey look, a namespace!"
run "kubectl get namespaces"


================================================
FILE: util.sh
================================================
#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

readonly  reset=$(tput sgr0)
readonly  green=$(tput bold; tput setaf 2)
readonly yellow=$(tput bold; tput setaf 3)
readonly   blue=$(tput bold; tput setaf 6)
readonly timeout=$(if [ "$(uname)" == "Darwin" ]; then echo "1"; else echo "0.1"; fi) 

function desc() {
    maybe_first_prompt
    echo -e "$blue# $@$reset"
    prompt
}

function desc_type() {
    maybe_first_prompt
    rate=25
    if [ -n "$DEMO_RUN_FAST" ]; then
      rate=1000
    fi
    if [ -n "$DEMO_RUN_SPEED" ]; then
      rate=$DEMO_RUN_SPEED
    fi
    echo -e "$blue# $@$reset" | pv -qL $rate

    prompt
}

function prompt() {
    echo -n "$yellow\$ $reset"
}

started=""
function maybe_first_prompt() {
    if [ -z "$started" ]; then
        prompt
        started=true
    fi
}

# After a `run` this variable will hold the stdout of the command that was run.
# If the command was interactive, this will likely be garbage.
DEMO_RUN_STDOUT=""

function run() {
    maybe_first_prompt
    rate=25
    if [ -n "$DEMO_RUN_FAST" ]; then
      rate=1000
    fi
    if [ -n "$DEMO_RUN_SPEED" ]; then
      rate=$DEMO_RUN_SPEED
    fi
    echo "$green$1$reset" | pv -qL $rate
    if [ -n "$DEMO_RUN_FAST" ]; then
      sleep 0.5
    fi
    OFILE="$(mktemp)"
    script -eq -c "$1" -f "$OFILE"
    r=$?
    read -d '' -t "${timeout}" -n 10000 # clear stdin
    prompt
    if [ -z "$DEMO_AUTO_RUN" ]; then
      read -s
    fi
    DEMO_RUN_STDOUT="$(tail -n +2 $OFILE | head -n -2 | sed 's/\r//g')"
    rm $OFILE
    return $r
}

function relative() {
    for arg; do
        echo "$(realpath $(dirname $(which $0)))/$arg" | sed "s|$(realpath $(pwd))|.|"
    done
}

SSH_NODE=$(kubectl get nodes | tail -1 | cut -f1 -d' ')

trap "echo" EXIT