CKAD Oct22 all days

#####MINIKUBE COMMANDSstudent@student-virtual-machine:~/Downloads$ history
    1  sudo apt install vim git
    2  cd ckad
    3  ./countdown 15
    4  ./countdown 13
    5  ./countdown 1
    6  git clone https://github.com/sandervanvugt/ckad
    7  sudo apt install git vim -y
    8  git clone https://github.com/sandervanvugt/ckad
    9  cd ckad
   10  ls
   11  ./minikube-docker-setup.sh
   12  minikube start --vm-driver=docker --cni=calico
   13  kubectl get all
   14  minikube ssh
   15  kubectl get all
   16  minikube status
   17  minikube dashboard
   18  kubectl get all
   19  kubectl create deployment firstginx --image=nginx --replicas=3
   20  kubectl get all
   21  history
   22  source <(kubectl completion bash)
   23  sudo apt install bash-completion
   24  kubectl -h
   25  kubectl create -h | less
   26  kubectl create deploy -h | less
   27  history
   28  cd
   29  cd .kube/
   30  cat config
   31  kubectl config view
   32  kubectl config set-context --current --namespace=mynamespace
   33  kubectl config set-context --current --namespace=default
   34  cd
   35  cd ckad
   36  ls
   37  cd dockerfile/
   38  ls
   39  vim Dockerfile
   40  docker build -t nmap .
   41  docker images
   42  docker save --help | less
   43  docker save -o nmap.tar nmap
   44  ls -l
   45  cd ..
   46  history
   47  ./countdown 1
   48  kubectl get pods
   49  kubectl get pods firstginx-7c4fcf6b55-bk2c5 -o yaml| less
   50  kubectl get all
   51  kubectl delete deploy dashginx
   52  kubectl get all
   53  kubectl delete pod firstginx-7c4fcf6b55-bk2c5
   54  kubectl get all
   55  kubectl run -h | less
   56  kubectl run nginx --image=nginx
   57  kubectl get all
   58  kubectl delete pod nginx
   59  kubectl get all
   60  kubectl describe pod firstginx-7c4fcf6b55-t4grh
   61  history
   62  kubectl get pods firstginx-7c4fcf6b55-bk2c5 -o yaml| less
   63  kubectl get pods firstginx-7c4fcf6b55-t4grh -o yaml | less
   64  kubectl explain pods
   65  kubectl explain pods.spec | less
   66  kubectl explain pods.spec.affinity | less
   67  kubectl explain --recursive pods.spec
   68  kubectl explain --recursive pods.spec | wc
   69  kubectl run mynginx --image=nginx --dry-run=client -o yaml
   70  kubectl run mynginx --image=nginx --dry-run=client -o yaml > mynginx.yaml
   71  vim sidecar.yaml
   72  kubectl apply -f sidecar.yaml
   73  kubectl exec -it sidecar-pod -c sidecar -- /bin/bash
   74  kubectl get pods
   75  vim sidecar.yaml
   76  docker search httpd | grep centos
   77  kubectl exec -it sidecar-pod -c sidecar -- /bin/bash
   78  kubectl delete pod sidecar-pod
   79  vim sidecard2.yaml
   80  kubectl create -f sidecard2.yaml
   81  vim sidecard2.yaml
   82  kubectl create -f sidecard2.yaml
   83  vim sidecard2.yaml
   84  kubectl create -f sidecard2.yaml
   85  kubectl get pods
   86  kubectl describe pods two-containers
   87  kubectl exec -it two-containers -c nginx-container -- sh
   88  history
   89  vim init-example1.yaml
   90  kubectl apply -f init-example1.yaml
   91  kubectl get pods
   92  kubectl describe pods init-demo1
   93  kubectl get pods
   94  vim init-example2.yaml
   95  kubectl create -f init-example2.yaml
   96  kubectl get pods
   97  sudo reboot
   98  sudo -i
   99  history | less
  100  minikube start --vm-driver=docker --cni=calico
  101  cd ckad
  102  vim init-example1.yaml
  103  kubectl get pods
  104  kubectl delete pod init-demo1
  105  vim init-example1.yaml
  106  kubectl create -f init-example1.yaml
  107  kubectl get pods
  108  wget -O http://info.cern.ch
  109  wget -O /tmp/index.html http://info.cern.ch
  110  cat /tmp/index.html
  111  source <(kubectl completion bash)
  112  kubectl describe pod init-demo1
  113  kubectl logs init-demo1
  114  kubectl logs init-demo1 -c install
  115  wget -O /tmp/index.html http://info.cern.ch
  116  kubectl exec -it init-demo1 -c install -- bash
  117  kubectl exec -it init-demo1 -c install -- sh
  118  kubectl run mydb --image=mariadb
  119  kubectl get pods
  120  kubectl describe pod mydb
  121  kubectl logs mydb
  122  kubectl delete pod mydb
  123  kubectl run -h | less
  124  kubectl run mydb --image=mariadb --env MARIADB_ROOT_PASSWORD=password
  125  kubectl get pods
  126  kubectl run busy --image=busybox
  127  kubectl get pods
  128  kubectl describe pod busy
  129  kubectl get pods busy -o yaml
  130  kubectl get pods
  131  kubectl get ns
  132  kubectl get pods -n default
  133  kubectl get pods -n kube-system
  134  kubectl get all -n kubernetes-dashboard
  135  kubectl describe ns kube-system
  136  kubectl get all -A
  137  kubectl get pods -A
  138  kubectl create ns secret
  139  kubectl run secretpod --image=nginx -n secret
  140  kubectl get pods
  141  kubectl get pods -n secret
  142  kubectl config set-context --current --namespace=secret
  143  kubectl get all
  144  kubectl config set-context --current --namespace=default
  145  history
  146  sudo poweroff
  147  minikube start
  148  kubectl explain pod.spec | less
  149  kubectl explain pod.spec.securityContext | less
  150  kubectl explain pod.spec.containers.securityContext | less
  151  cd ckad/
  152  ls
  153  vim securitycontextdemo2.yaml
  154  kubectl apply -f securitycontextdemo2.yaml
  155  kubectl get pods
  156  kubectl exec -it security-context-demo -- sh
  157  vim securitycontextdemo.yaml
  158  kubectl apply -f securitycontextdemo.yaml
  159  kubectl get pods
  160  kubectl describe nginxsecure
  161  kubectl describe pod nginxsecure
  162  kubectl create job onejob --image=busybox -- date
  163  kubectl get jobs,pods
  164  kubectl get jobs onejob -o yaml | less
  165  kubectl get jobs,pods
  166  kubectl delete job onejob
  167  kubectl get jobs,pods
  168  kubectl create job mynewjob --image=busybox --dry-run=client -o yaml -- sleep 5 > mynewjob.yaml
  169  vim mynewjob.yaml
  170  kubectl apply -f mynewjob.yaml
  171  kubectl get jobs,pods
  172  kubectl explain jobs.spec | less
  173  kubectl explain --recursive jobs.spec  | less
  174  kubectl get jobs,pods
  175  kubectl create cronjob -h | less
  176  kubectl create cronjob runme --image=busybox --schedule="*/10 * * * *" -- echo greetings from the cluster
  177  kubectl get cronjobs,jobs,pods
  178  date
  179  kubectl creat job --from=cronjob/runme
  180  kubectl create job --from=cronjob/runme
  181  kubectl create job testjob --from=cronjob/runme
  182  kubectl get cronjobs,jobs,pods
  183  kubectl logs testjob-6ckzk
  184  source <(kubectl completion bash)
  185  history
  186  kubectl create cronjob sayhello --image=busybox --schedule="* * * * *" -- logger hello world
  187  date
  188  kubectl get jobs,cronjobs,pods
  189  kubectl logs sayhello-27759758-zxwzg
  190  kubectl exec -it sayhello-27759758-zxwzg -- journalctl
  191  vim frontend-resources.yaml
  192  kubectl apply -f frontend-resources.yaml
  193  kubectl get pods
  194  kubectl describe pod frontend
  195  kubectl delete -f frontend.yaml
  196  kubectl delete -f frontend-resources.yaml
  197  vim frontend-resources.yaml
  198  kubectl apply -f frontend-resources.yaml
  199  kubectl get pods
  200  kubectl describe pods frontend
  201  kubectl delete -f frontend-resources.yaml
  202  vim frontend-resources.yaml
  203  kubectl apply -f frontend-resources.yaml
  204  kubectl get pods
  205  kubectl describe pod frontend
  206  kubectl delete -f frontend-resources.yaml
  207  kubectl run httpd --image=httpd:2/4/54-alpine --dry-run=client -o yaml | kubectl set resources -f --limits "memory=512Mi" --requests "memory=512Mi" --local -o yaml | kubectl create -f -
  208  kubectl run httpd --image=httpd:2.4.54-alpine --dry-run=client -o yaml | kubectl set resources -f - --limits "memory=512Mi" --requests "memory=512Mi" --local -o yaml | kubectl create -f -
  209  kubectl get pods httpd -o yaml | less
  210  vim lab6.yaml
  211  kubectl create -f lab6.yaml
  212  kubectl get pods
  213  kubectl get pods webserver -o yaml
  214  history
  215  vim busybox-ready.yaml
  216  kubectl creat -f busybox-ready.yaml
  217  kubectl create -f busybox-ready.yaml
  218  kubectl get pods
  219  kubectl edit pods busybox-ready
  220  kubectl get pods
  221  kubectl exec -it busybox-ready -- touch /tmp/nothing
  222  kubectl get pods
  223  vim nginx-probes.yaml
  224  kubectl create -f nginx-probes.yaml
  225  kubectl get pods
  226  kubectl create deploy -h | less
  227  kubectl create deploy myweb --image=nginx --replicas=3
  228  kubectl describe deploy myweb | less
  229  kubectl get deploy myweb -o yaml | less
  230  kubectl get all
  231  kubectl get all --selector app=myweb
  232  kubectl delete pods myweb-d5b9458bc-5wc98
  233  kubectl get all --selector app=myweb
  234  kubectl run blahpod --image=nginx
  235  kubectl delete pod blahpod
  236  vim redis-deploy.yaml
  237  kubectl create -f redis-deploy.yaml
  238  vim redis-deploy.yaml
  239  kubectl api-versions
  240  vim redis-deploy.yaml
  241  kubectl create -f redis-deploy.yaml
  242  kubectl api-resources | less
  243  kubectl edit deploy redis
  244  kubectl get all --selector app=redis
  245  kubectl delete rs redis-6467896d84
  246  kubectl get all --selector app=redis
  247  kubectl create -h | less
  248  kubectl create deploy -h | less
  249  kubectl create deploy nginxup --image=nginx:1.14 --replicas=7
  250  kubectl get all --selector app=nginxup
  251  kubectl set -h | less
  252  kubectl set image deploy nginxup nginx=nginx:1.17
  253  kubectl get all --selector app=nginxup
  254  kubectl get all --show-labels
  255  kubectl get deploy redis -o yaml | less
  256  history | grep redis
  257  history | grep apply
  258  vim redis-deploy.yaml
  259  kubectl apply -f redis-deploy.yaml
  260  kubectl get deploy redis2 -o yaml | less
  261  kubectl create deploy bluelabel --image=nginx --replicas=2
  262  kubectl label deployments.apps bluelabel state=demo
  263  kubectl get deploy --show-labels
  264  kubectl get deploy --selector state=demo
  265  kubectl get all --selector state=demo
  266  kubectl get all --selector app=bluelabel
  267  kubectl describe deployments.apps bluelabel
  268  kubectl get pods | grep blue
  269  kubectl label pod bluelabel-d7894847c-c2vb5 app-
  270  kubectl get pods | grep blue
  271  kubectl create deploy -h | less
  272  kubectl create deploy blah --image=nginx --label "state=demo"
  273  kubectl get pods --show-labels
  274  kubectl get pods -l run
  275  kubectl get pods -l run --show-labels
  276  kubectl get pods --show-labels | grep run
  277  kubectl get pods --show-labels | grep run=
  278  ./countdown 14
  279  vim lab9.yaml
  280  kubectl apply -f lab9.yaml
  281  kubectl get all
  282  kubectl get jobs,cronjobs,pods --show-labels
  283  kubectl get jobs,cronjobs,pods | grep kill
  284  vim lab9.yaml
  285  kubectl get -h | less
  286  kubectl get deploy bluelabel -o yaml
  287  oc get deploy
  288  kubectl get deploy
  289  kubectl scale deploy bluelabel --replicas=8
  290  kubectl set env deploy bluelabel type=blended
  291  kubectl get all --selector app=bluelabel
  292  kubectl delete all --all
  293  kubectl get all
  294  vim rolling.yaml
  295  kubectl apply -f rolling.yaml
  296  kubectl rollout history deploy
  297  kubectl edit deploy rolling-nginx
  298  kubectl rollout history deploy
  299  kubectl describe deployments.apps rolling-nginx
  300  kubectl rollout history deployment rolling-nginx --revision=2
  301  kubectl rollout history deployment rolling-nginx --revision=1
  302  kubectl rollout undo deployment rolling-nginx --to-revision=1
  303  kubectl rollout history deploy
  304  ./countdown 1
  305  ./countdown 13
  306  kubectl create deploy nginxsvc --image=nginx
  307  kubectl get all --selector app=nginxsvc
  308  kubectl scale deployment nginxsvc --replicas=3
  309  kubectl expose deploy nginxsvc --port=80
  310  kubectl describe svc nginxsvc
  311  kubectl get svc nginxsvc -o yaml
  312  kubectl get svc
  313  kubectl get endpoints
  314  curl 10.106.169.198
  315  minikube ssh
  316  kubectl edit svc nginxsvc
  317  kubectl get svc
  318  minikube ip
  319  curl 192.168.49.2:31486
  320  kubectl run testpod --image=busybox -- sleep 3600
  321  kubectl get svc
  322  kubectl get svc,pods -n kube-system
  323  kubectl exec -it testpod -- cat /etc/resolv.conf
  324  kubectl exec -it testpod -- nslookup nginxsvc
  325  vim nwpolicy-complete-example.yaml
  326  kubectl expose pod nginx --port=80
  327  kubectl create -f nwpolicy-complete-example.yaml
  328  kubectl expose pod nginx --port=80
  329  kubectl get svc,pods,networkpolicy
  330  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  331  history
  332  minikube status
  333  minikube addons list
  334  minikube addon enable ingress
  335  minikube addons enable ingress
  336  kubectl get ns
  337  kubectl get pods -n ingress-nginx
  338  source <(kubectl completion bash)
  339  kubectl get deploy
  340  kubectl delete deployments.apps rolling-nginx
  341  kubectl get svc
  342  curl http://192.168.49.2:31486
  343  kubectl create ingress -h | less
  344  kubectl create ingress nginxsvc-ingress --rule="/=nginxsvc:80" --rule="/hello=newdep:8080"
  345  sudo vim /etc/hosts
  346  kubectl get ingress
  347  curl nginxsvc.info
  348  kubectl describe ingress
  349  kubectl describe svc nginxsvc
  350  kubectl create deployment newdep --image=gcr.io/google-samples/hello-app:2.0
  351  kubectl expose deployment newdep --port=8080
  352  kubectl describe ingress
  353  curl nginxsvc.info/hello
  354  history
  355  kubectl explain pod.spec.volumes | less
  356  vim morevolumes.yaml
  357  kubectl create -f morevolumes.yaml
  358  kubectl get pods morevol2
  359  kubectl describe pods morevol2
  360  kubectl get pods morevol2
  361  kubectl exec -it morevol2 -c centos1 -- touch /centos1/test
  362  kubectl exec -it morevol2 -c centos2 -- ls -l /centos2
  363  date
  364  kubectl exec -it morevol2 -c centos1 -- touch /centos1/testingaain
  365  kubectl exec -it morevol2 -c centos2 -- ls -l /centos2
  366  history
  367  vim pv.yaml
  368  kubectl create -f pv.yaml
  369  kubectl get pv
  370  vim pvc.yaml
  371  kubectl create -f pvc.yaml
  372  kubectl get pvc,pv
  373  kubectl get storageclass
  374  kubectl describe pv pvc-cd6e6d2f-0b74-4dfd-801c-9a515d60cc00
  375  kubectl get pvc,pv
  376  vim pvc-pod.yaml
  377  kubectl create -f pvc-pod.yaml
  378  kubectl get pvc,pv
  379  kubectl describe pv pvc-4d989416-4fcf-494a-9709-7dcbfc96cdce
  380  kubectl exec -it nginx-pvc-pod -- touch /usr/share/nginx/html/testfileZ
  381  minikube ssh
  382  ./countdown 1
  383  kubectl explain persistentvolume.spec.csi
  384  ./countdown 13
  385  kubectl create deploy mydb --image=mariadb
  386  kubectl get all
  387  kubectl describe pods mydb-c8bddc94c-nb8mv
  388  kubectl logs mydb-c8bddc94c-nb8mv
  389  kubectl set env deploy mydb MARIADB_ROOT_PASSWORD=password
  390  kubectl get all
  391  kubectl get deploy mydb -o yaml > mydb.yaml
  392  vim mydb.yaml
  393  vim varsfile
  394  kubectl create cm mydbvars --from-env-file=varsfile
  395  kubectl describe cm mydbvars
  396  kubectl delete deploy mydb
  397  kubectl create deploy mydb --image=mariadb --replicas=3
  398  kubectl get all --selector app=mydb
  399  kubectl set env deploy mydb --from=configmap/mydbvars
  400  kubectl get all --selector app=mydb
  401  kubectl get deploy mydb -o yaml
  402  echo hello world > index.html
  403  kubectl create cm myindex --from-file=index.html
  404  kubectl describe cm myindex
  405  kubectl create cm mypasswd --from-file=/etc/passwd
  406  kubectl describe cm mypasswd
  407  kubectl create deployment myweb --image=nginx
  408  kubectl edit deploy myweb
  409  kubectl get all
  410  kubectl exec -it myweb -- cat /usr/share/nginx/html/index.html
  411  kubectl exec -it myweb-859f554699-jqng6 -- cat /usr/share/nginx/html/index.html
  412  kubectl create secret -h
  413  kubectl create secret generic dbpw --from-literal=ROOT_PASSWORD=password
  414  kubectl describe secret dbpw
  415  kubectl get secret dbpw -o yaml
  416  echo cGFzc3dvcmQ= | base64 -d
  417  kubectl delete deployments.apps mydb
  418  kubectl create deployment mynewdb --image=mariadb
  419  kubectl set env deploy mynewdb --from=secret/dbpw --prefix=MYSQL_
  420  history
  421  ./countdown 1
  422  kubectl api-resources | less
  423  vim redis-deploy.yaml
  424  kubectl config view
  425  kubectl proxy --port=8001 &
  426  kubectl create deploy curlginx --image=nginx --replicas=3
  427  curl http://localhost:8001/version
  428  curl http://localhost:8001/api/v1/namespaces/default/pods
  429  curl http://localhost:8001/api/v1/namespaces/default/pods/testpod
  430  curl h-XDELETE ttp://localhost:8001/api/v1/namespaces/default/pods/testpod
  431  curl h-XDELETE http://localhost:8001/api/v1/namespaces/default/pods/testpod
  432  curl -XDELETE http://localhost:8001/api/v1/namespaces/default/pods/testpod
  433  kubectl get pods
  434  kubectl auth can-i get pods
  435  kubectl auth can-i get pods --as bob
  436  ./countdown 13
  437  vim mypod.yaml
  438  kubectl apply -f mypod.yaml
  439  kubectl get pods mypod -o yaml | grep ervice
  440  kubectl get sa
  441  kubectl get sa -A
  442  kubectl exec -it mypod -- sh
  443  cd
  444  cd Downloads/
  445  ls
  446  tar xvf helm-v3.10.1-linux-amd64.tar.gz
  447  sudo mv linux-amd64/helm /usr/local/bin/
  448  helm version
  449  kubectl get ns
  450  history

####AIO COMMANDS
student@student-virtual-machine:~/ckad$ history
    1  history
    2  sudo apt install vim git -y
    3  git clone https://github.com/sandervanvugt/cka
    4  cd cka
    5  ls
    6  sudo ./setup-container.sh
    7  sudo ./setup-kubetools.sh
    8  sudo kubeadm init
    9  mkdir -p $HOME/.kube
   10  kubectl get all
   11  kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
   12  kubectl get pods -n kube-system
   13  source <(kubectl completion bash)
   14  kubectl edit nodes student-virtual-machine
   15  kubectl get pods -n kube-system
   16  kubectl create deploy --image=nginx
   17  kubectl create deploy testdep --image=nginx
   18  kubectl get all
   19  history
   20  sudo poweroff
   21  history
   22  cd ckad
   23  ls
   24  git clone https://github.com/sandervanvugt/ckad
   25  cd ckad
   26  kubectl apply -f mypod.yaml
   27  kubectl exec -it mypod -- sh
   28  kubectl get pods -n kube-system
   29  ping dl-cdn.alpinelinux.org
   30  kubectl get pods -o wide
   31  kubectl exec -it mypod -- sh
   32  vim list-pods.yaml
   33  vim list-pods-mysa-binding.yaml
   34  kubectl create sa mysa
   35  vim mysapod.yaml
   36  kubectl get sa
   37  kubectl get sa -n secret
   38  vim mysapod.yaml
   39  ./countdown 1
   40  cd ../Downloads/
   41  ls
   42  tar xvf helm-v3.10.1-linux-amd64.tar.gz
   43  sudo cp linux-amd64/helm /usr/local/bin/
   44  kubectl get ns
   45  helm repo add kubernetes-dashboard https://kubernetes.github.io/dashboard/
   46  helm install kubernetes-dashboard kubernetes-dashboard/kubernetes-dashboard
   47  export POD_NAME=$(kubectl get pods -n default -l "app.kubernetes.io/name=kubernetes-dashboard,app.kubernetes.io/instance=kubernetes-dashboard" -o jsonpath="{.items[0].metadata.name}")
   48  echo $POD_NAME
   49  kubectl get pods
   50  kubectl -n default port-forward $POD_NAME 8443:8443
   51  bg
   52  cp ~/.kube/config ~/
   53  cd
   54  kubectl get all
   55  history | less
   56  ls -l .kube/config
   57  mkdir .dummy
   58  sudo /etc/kubernetes/admin.conf .dummy/
   59  sudo cp /etc/kubernetes/admin.conf .dummy/
   60  chown student:student .dummy/admin.conf
   61  sudo chown student:student .dummy/admin.conf
   62  cd .dummy/
   63  ls -l
   64  mv admin.conf config
   65  cd
   66  helm repo add bitnami https://charts.bitnami.com/bitnami
   67  helm repo list
   68  helm search repo bitnami
   69  helm repo update
   70  helm install bitnami/mysql --generate-name
   71  kubectl get all
   72  helm show chart bitnami/mysql
   73  helm show all bitnami/mysql
   74  helm list
   75  helm status mysql-1665680527
   76  helm show values bitnami/nginx
   77  helm pull bitnami/nginx
   78  ls
   79  tar xvf nginx-13.2.10.tgz
   80  vim nginx/values.yaml
   81  helm template --debug nginx
   82  helm install -f nginx/values.yaml my-nginx nginx/
   83  cd ckad/
   84  ./countdown 12
   85  kubectl create deploy blue-nginx --image=nginx:1.14 --replicas=3
   86  kubectl expose deploy blue-nginx --port=80 --name=bgnginx
   87  source <(kubectl completion bash)
   88  kubectl get deploy blue-nginx -o yaml > green-nginx.yaml
   89  vim green-nginx.yaml
   90  kubectl create -f green-nginx.yaml
   91  kubectl get pods
   92  kubectl delete svc bgnginx; kubectl expose deploy green-nginx --port=80 --name=bgnginx
   93  kubectl get endpoints
   94  kubectl get pods -o wide
   95  kubectl scale deploy blue-nginx --replicas=0
   96  kubectl get deploy green-nginx -o yaml > green.yaml
   97  vim green.yaml
   98  kubectl create deploy old-nginx --image=nginx:1.14 --replicas=3 --dry-run=client -o yaml > ~/oldnginx.yaml
   99  vim ~/oldnginx.yaml
  100  kubectl create -f ~/oldnginx.yaml
  101  kubectl expose deploy old-nginx --name=oldnginx --port=80 --selector type=canary
  102  kubectl get svc,endpoints
  103  minikube ssh
  104  curl 10.103.42.159
  105  kubectl cp old-nginx-9b8576459-cwpc2:/usr/share/nginx/html/index.html index.html
  106  vim index.html
  107  kubectl create cm canary --from-file=index.html
  108  kubectl describe cm canary
  109  vim canary.yaml
  110  kubectl create -f canary.yaml
  111  kubectl get svc,endpoints
  112  curl 10.103.42.159
  113  kubectl scale deployment new-nginx --replicas=3
  114  curl 10.103.42.159
  115  kubectl scale deployment old-nginx --replicas=0
  116  curl 10.103.42.159
  117  ./countdown 1
  118  history
  119  cat crd-object.yaml
  120  kubectl create -f crd-object.yaml
  121  kubectl api-resources | grep backup
  122  cat crd-backup.yaml
  123  kubectl create -f crd-backup.yaml
  124  kubectl get backups
  125  kubectl get backups -o yaml
  126  kubectl api-resources | grep crd
  127  history