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 ================================================ Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] 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. ================================================ 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 ${BASH_SOURCE})/util.sh desc "This is a comment. It will be printed, but not through the typing simulator." desc "After this it will run a command." desc "After each command, it will wait for to proceed." run "date" run "sleep 1" desc_type "This one will be printed through the typing simulator." run "date" desc "If you set \$DEMO_RUN_FAST=1, the typing will go faster" DEMO_RUN_FAST=1 run "echo \"this is a long command which would have taken a while to type out\"" desc "If you set \$DEMO_RUN_SPEED to a value between 1 and 1000, the typing will go slower or faster" DEMO_RUN_SPEED=5 run "echo \"this is DEMO_RUN_SPEED=5\"" DEMO_RUN_SPEED=25 run "echo \"this is DEMO_RUN_SPEED=25, which is the default\"" DEMO_RUN_SPEED=100 run "echo \"this is DEMO_RUN_SPEED=100, which is fast enough to need more text here\"" desc "If you set \$DEMO_AUTO_RUN=1 it will not wait for input between commands" DEMO_AUTO_RUN=1 run "echo \"This is the first command\"" run "echo \"This is the second command\"" run "echo \"This is the third command\"" unset DEMO_AUTO_RUN desc "The output of the last command is in \$DEMO_RUN_STDOUT if you need it" run "date" run "echo \"$DEMO_RUN_STDOUT\"" desc "At the end it will wait for one last ." ================================================ 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