Reorg TOC to match class; added alias+refs; added exploring-images

This commit is contained in:
Gerry S
2022-07-29 09:53:55 -04:00
parent 0863210811
commit 663e56bc1d
9 changed files with 329 additions and 23 deletions

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```bash
$ docker run -it debian
root@ef22f9437171:/# apt-get update
root@ef22f9437171:/# apt-get install skopeo
root@ef22f9437171:/# apt-get wget curl jq
root@ef22f9437171:/# skopeo login docker.io -u containertraining -p testaccount
$ docker commit $(docker ps -lq) skop
```
```bash
root@0ab665194c4f:~# skopeo copy docker://docker.io/containertraining/test-image-0 dir:/root/test-image-0
root@0ab665194c4f:~# cd /root/test-image-0
root@0ab665194c4f:~# jq <manifest.json .layers[].digest
```
Stuff in Exploring-images
image-test-0/1/2 + jpg

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FROM busybox
ADD verifyImageFiles.sh /
WORKDIR /play
RUN echo "== LAYER 0 ==" && \
echo "A is for Aardvark" >A && \
echo "B is for Beetle" >B && \
mkdir C/ && \
echo "A is for Cowboy Allan" >C/CA && \
mkdir -p C/CB && \
echo "A is for Cowboy Buffalo Alex" >C/CB/CBA && \
echo "B is for Cowboy Buffalo Bill" >C/CB/CBB && \
echo "Z is for Cowboy Zeke" >> C/CZ && \
mkdir D/ && \
echo "A is for Detective Alisha" >D/DA && \
echo "B is for Detective Betty" >D/DB && \
echo "E is for Elephant" >E && \
find . >../state.layer-0

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FROM test-image-0
WORKDIR /play
RUN echo "== LAYER 1 == Change File B, Create File C/CC, Add Dir C/CD, Remove File E, Create Dir F, Add File G, Create Empty Dir H" && \
echo "B is for Butterfly" >B && \
echo "C is for Cowboy Chuck">C/CC && \
mkdir -p C/CD && \
echo "A is for Cowboy Dandy Austin" >C/CD/CDA && \
rm E && \
mkdir F && \
echo "A is for Ferret Albert" >F/FA && \
echo "G is for Gorilla" >G && \
mkdir H && \
find . >../state.layer-1

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FROM test-image-1
WORKDIR /play
RUN echo "== LAYER 2 == Remove File C/CA, Remove Dir G, Remove Dir D / Replace with new Dir D, Remove Dir C/CB, Remove Dir C/CB, Remove Dir F, Add File G, Remove Dir H / Create File H" && \
rm C/CA && \
rm -rf C/CB && \
echo "Z is for Cowboy Zoe" >> CZ && \
rm -rf D && \
mkdir -p D && \
echo "A is for Duplicitous Albatros" >D/DA && \
rm -rf F && \
rm G && \
echo "G is for Geccos" >G && \
rmdir H \
echo "H is for Human" >H && \
find . >../state.layer-2

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clear
baseDir=$(pwd)
rm -rf /tmp/exploringImags
mkdir -p /tmp/exploringImags
cd /tmp/exploringImags
echo "== LAYER 0 =="
echo "A is for Aardvark" >A
echo "B is for Beetle" >B
mkdir C/
echo "A is for Cowboy Allan" >C/CA
mkdir -p C/CB
echo "A is for Cowboy Buffalo Alex" >C/CB/CBA
echo "B is for Cowboy Buffalo Bill" >C/CB/CBB
echo "Z is for Cowboy Zeke" >C/CZ
mkdir D/
echo "A is for Detective Alisha" >D/DA
echo "B is for Detective Betty" >D/DB
echo "E is for Elephant" >E
find . >../state.layer-0
tree | grep -v directories | tee ../tree.layer-0
$baseDir/verifyImageFiles.sh 0 $(pwd)
echo "== LAYER 1 == Change File B, Create File C/CC, Add Dir C/CD, Remove File E, Create Dir F, Add File G, Create Empty Dir H"
echo "B is for Butterfly" >B
echo "C is for Cowboy Chuck">C/CC
mkdir -p C/CD
echo "A is for Cowboy Dandy Austin" >C/CD/CDA
rm E
mkdir F
echo "A is for Ferret Albert" >F/FA
echo "G is for Gorilla" >G
mkdir H
find . >../state.layer-1
tree | grep -v directories | tee ../tree.layer-1
$baseDir/verifyImageFiles.sh 1 $(pwd)
echo "== LAYER 2 == Remove File C/CA, Remove Dir G, Remove Dir D Replace with new Dir D, Remove Dir C/CB, Remove Dir C/CB, Add File H/HA, Add File, Create Dir I"
rm C/CA
rm -rf C/CB
echo "Z is for Cowboy Zoe" >C/CZ
rm -rf D
mkdir -p D
echo "A is for Duplicitous Albatros" >D/DA
rm -rf F
rm -rf G
echo "G is for Geccos" >G
rmdir H
echo "H is for Human" >H
find . >../state.layer-2
tree | grep -v directories | tee ../tree.layer-2
$baseDir/verifyImageFiles.sh 2 $(pwd)

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fileContentsCompare() {
layer=$1
text=$2
file=$(pwd)/$3
if [ -f "$file" ]; then
fileContents=$(cat $file)
if [ "$fileContents" != "$text" ]; then
echo In Layer $layer Unexpected contents in file: $file
echo -- Contents: $fileContents
echo -- Expected: $text
fi
else
echo Missing File $file in Layer $layer
fi
}
checkLayer() {
layer=$1
find . >/tmp/state
if [[ $(diff /tmp/state $targetDir/../state.layer-$layer) ]]; then
echo Directory Structure mismatch in layer: $layer
diff /tmp/state $targetDir/../state.layer-$layer
fi
case $layer in
0)
fileContentsCompare $layer "A is for Aardvark" A
fileContentsCompare $layer "B is for Beetle" B
fileContentsCompare $layer "A is for Cowboy Allan" C/CA
fileContentsCompare $layer "A is for Cowboy Buffalo Alex" C/CB/CBA
fileContentsCompare $layer "B is for Cowboy Buffalo Bill" C/CB/CBB
fileContentsCompare $layer "Z is for Cowboy Zeke" C/CZ
fileContentsCompare $layer "A is for Detective Alisha" D/DA
fileContentsCompare $layer "B is for Detective Betty" D/DB
fileContentsCompare $layer "E is for Elephant" E
;;
# echo "== LAYER 1 == Change File B, Create File C/CC, Add Dir C/CD, Remove File E, Create Dir F, Add File G, Create Empty Dir H"
1)
fileContentsCompare $layer "A is for Aardvark" A
fileContentsCompare $layer "B is for Butterfly" B ## CHANGED FILE B
fileContentsCompare $layer "A is for Cowboy Allan" C/CA
fileContentsCompare $layer "A is for Cowboy Buffalo Alex" C/CB/CBA
fileContentsCompare $layer "B is for Cowboy Buffalo Bill" C/CB/CBB
fileContentsCompare $layer "C is for Cowboy Chuck" C/CC ## ADDED FILE C/CC
fileContentsCompare $layer "A is for Cowboy Dandy Austin" C/CD/CDA ## ADDED DIR C/CD, ADDED FILE C/CD/CDA
fileContentsCompare $layer "Z is for Cowboy Zeke" C/CZ
fileContentsCompare $layer "A is for Detective Alisha" D/DA
fileContentsCompare $layer "B is for Detective Betty" D/DB
## REMOVED FILE E
fileContentsCompare $layer "A is for Ferret Albert" F/FA ## ADDED DIR F, ADDED FILE F/A
fileContentsCompare $layer "G is for Gorilla" G ## ADDED G
## CREATED EMPTY DIR H
;;
# echo "== LAYER 2 == Remove File C/CA, Remove Dir C/CB, Remove Dir C/CB, Remove Dir D Replace with new Dir D, Delete and Recreatee File G, Add File H/HA Create Dir I"
2)
fileContentsCompare $layer "A is for Aardvark" A
fileContentsCompare $layer "B is for Butterfly" B
## REMOVED FILE C/CA
## REMOVED DIR C/CB
fileContentsCompare $layer "C is for Cowboy Chuck" C/CC
fileContentsCompare $layer "A is for Cowboy Dandy Austin" C/CD/CDA
fileContentsCompare $layer "Z is for Cowboy Zoe" C/CZ ## CHANGED FILE C/CZ
## REMOVE DIR D
fileContentsCompare $layer "A is for Duplicitous Albatros" D/DA ## RECREATE DIR D, ADD FILE D/DA
fileContentsCompare $layer "G is for Geccos" G ## DELETED FILE G, ADDED FILE G (Implicit CHANGED)
fileContentsCompare $layer "H is for Human" H ## ADDED FILE H
;;
esac
}
layer=$1
targetDir=$2
echo VERIFYING LAYER $layer
checkLayer $layer

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# External References && kubectl Aliases
Class Slides: https://2022-07-proofpoint.container.training/
Kubectl Cheat Sheet: https://kubernetes.io/docs/reference/kubectl/cheatsheet/
Kubernetes API Object and kubectl Explorers
- https://github.com/GerrySeidman/Kubernetes-Explorer
Gerry Kubernetes Storage Converence Talks
- Vault '20: https://www.usenix.org/conference/vault20/presentation/seidman
- Data and Dev '21: https://www.youtube.com/watch?v=k_8rWPwJ_38
Gerry Seidmans Info
- gerry.seidman@ardanlabs.com
- https://www.linkedin.com/in/gerryseidman/
---
## Kubectl Aliases
```bash
alias k='kubectl'
alias kg='kubectl get'
alias kl='kubctl logs'
alias ka='kubectl apply -f'
alias kd='kubectl delete'
alias kdf='kubectl delete -f'
alias kb='kubectl describe'
alias kex='kubectl explain'
alias ke='kubectl edit'
alias kx='kubectl exec -it $1 -- /bin/sh'
```
Note the below is only because of a quirk in how the lab VMs were installed:
```bash
echo 'kubectl exec -it $1 -- /bin/sh' >kx
chmod +x kx
sudo mv kx /usr/local/bin/kx
```

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@@ -39,42 +39,36 @@ content:
- containers/Dockerfile_Tips.md
- containers/Multi_Stage_Builds.md
- containers/Exercise_Dockerfile_Advanced.md
- # DAY 2
- # DAY Actually Day 3
- |
# Kubernetes
- shared/connecting.md
#- shared/webssh.md
#- k8s/versions-k8s.md
- shared/sampleapp.md
#- shared/composescale.md
#- shared/hastyconclusions.md
- shared/composedown.md
- k8s/concepts-k8s.md
- k8s/kubectlget.md
- k8s/kubectl-run.md
- k8s/kubenet.md
- k8s/kubectlexpose.md
- k8s/shippingimages.md
#- k8s/buildshiprun-selfhosted.md
- k8s/buildshiprun-dockerhub.md
- exercises/k8sfundamentals-details.md
- # DAY 3
- k8s/ourapponkube.md
- k8s/labels-annotations.md
- k8s/kubectl-logs.md
- k8s/logs-cli.md
- k8s/namespaces.md
- k8s/yamldeploy.md
- shared/declarative.md
- k8s/declarative.md
#- shared/hastyconclusions.md
- k8s/concepts-k8s.md
- k8s/deploymentslideshow.md
- k8s/shippingimages.md
- k8s/kubectlget.md
- k8s/kubectl-run.md
#- k8s/buildshiprun-selfhosted.md
- k8s/yamldeploy.md
- k8s/alias-and-references.md
- # DAY Actually Day 4
- k8s/kubectl-logs.md
- k8s/logs-cli.md
- k8s/labels-annotations.md
- k8s/namespaces.md
- k8s/authoring-yaml.md
- k8s/scalingdockercoins.md
- shared/hastyconclusions.md
- k8s/daemonset.md
- k8s/rollout.md
- k8s/healthchecks.md
- # DAY 4
- # DAY Actually Day 5
- k8s/kubenet.md
- k8s/kubectlexpose.md
- k8s/volumes.md
- k8s/configuration.md
- k8s/secrets.md
@@ -83,6 +77,16 @@ content:
- k8s/helm-create-basic-chart.md
- k8s/helm-create-better-chart.md
- shared/thankyou.md
- # DockerCoins
- |
# (Docker Coins Example)
- shared/sampleapp.md
- k8s/buildshiprun-dockerhub.md
- exercises/k8sfundamentals-details.md
- k8s/ourapponkube.md
- k8s/scalingdockercoins.md
- shared/hastyconclusions.md
- shared/composedown.md
- # EXTRA
- |
# (Extra Docker content)