CKAD march23 all days

student@student-virtual-machine:~/ckad$ history
    1  history
    2  minikube start --vm-driver=docker --cni=calico
    3  kubectl get all
    4  history
    5  minikube status
    6  minikube ssh
    7  kubectl get all
    8  minikube --help | less
    9  minikube dashboard
   10  kubectl get all
   11  kubectl create deploy firstnginx --image=nginx --replicas=3
   12  kubectl get all
   13  history
   14  kubectl -h | less
   15  kubectl completion -h | less
   16  source <(kubectl completion bash)
   17  vim ~/.kube/config
   18  kubectl get pods
   19  kubectl get ns
   20  kubectl config view
   21  kubectl config set-context minikube --namespace=kube-system
   22  kubectl get pods
   23  kubectl config set-context --current --namespace=default
   24  ls *file
   25  cd dockerfile/
   26  vim Dockerfile
   27  docker build -t centmap .
   28  docker images
   29  docker save --help
   30  docker save centmap
   31  docker save centmap -o centmap.tar
   32  ls -l centmap.tar
   33  history
   34  kubectl get pods
   35  kubectl delete pod dontuseme-5dc7b7f996-dph5m
   36  kubectl get pods
   37  kubectl run -h | less
   38  kubectl run nginxxxx --image=nginx
   39  kubectl get pods
   40  history
   41  kubectl get pods
   42  kubectl delete pod nginxxxx
   43  kubectl get pods
   44  kubectl explain pods
   45  kubectl explain pods.spec | less
   46  history
   47  kubectl get pods
   48  kubectl get pods firstnginx-5444786b89-m48zg -o yaml | less
   49  kubectl describe pod firstnginx-5444786b89-wh24c | less
   50  vim ex1.txt
   51  history
   52  kubectl describe pod firstnginx-5444786b89-wh24c | less
   53  kubectl get pods -o wide
   54  cd
   55  kubectl run nginxxxx --image=nginx --dry-run=client -o yaml
   56  kubectl run nginxxxx --image=nginx --dry-run=client -o yaml > nginxxxx.yaml
   57  vim nginxxxx.yaml
   58  kubectl apply -f nginxxxx.yaml
   59  vim nginxxxx.yaml
   60  kubectl apply -f nginxxxx.yaml
   61  vim nginxxxx.yaml
   62  kubectl apply -f nginxxxx.yaml
   63  history
   64  vim nginxxxx.yaml
   65  kubectl delete -f nginxxxx.yaml
   66  kubectl apply -f nginxxxx.yaml
   67  vim nginxxxx.yaml
   68  kubectl apply -f nginxxxx.yaml
   69  cd ckad/
   70  vim sidecar.yaml
   71  kubectl apply -f sidecar.yaml
   72  kubectl get pods
   73  kubectl exec -it sidecar-pod -c sidecar -- /bin/bash
   74  kubectl apply -f sidecar.yaml
   75  vim sidecar.yaml
   76  vim morevolumes.yaml
   77  vim init-example1.yaml
   78  kubectl create -f init-example1.yaml
   79  kubectl get pods
   80  vim init-example2.yaml
   81  kubectl apply -f init-example2.yaml
   82  kubectl get pods
   83  kubectl get ns
   84  kubectl get pods -n kube-system
   85  kubectl get pods -n kubernetes-dashboard
   86  kubectl describe ns default
   87  kubectl get pods
   88  kubectl get pods -A
   89  kubectl create ns secret
   90  kubectl config set-context --current --namespace=secret
   91  kubectl get pods
   92  kubectl run busybox --image=busybox -n secret
   93  kubectl get pods
   94  vim busybox-ns.yaml
   95  kubectl create -f busybox-ns.yaml
   96  kubectl get pods
   97  kubectl describe pod busybox
   98  kubectl delete pod busybox
   99  kubectl run busybox --image=busybox -n secret -- sleep 3600
  100  kubectl get pods
  101  kubectl config set-context --current --namespace=default
  102  kubectl run nginx-lab --image=nginx
  103  kubectl get pods
  104  k get pods
  105  ./countdown 12
  106  kubectl run faildb --image=mariadb
  107  kubectl get pods
  108  kubectl describe pod init-demo2
  109  kubectl describe pod faildb
  110  kubectl logs faildb
  111  kubectl delete pod faildb
  112  kubectl run -h | less
  113  kubectl run mydb --image=mariadb --env=MARIADB_ROOT_PASSWORD=password
  114  kubectl get pods
  115  kubectl exec mydb -- set
  116  kubectl exec mydb -- env
  117  kubectl run busybox
  118  kubectl run busybox --image=busbox
  119  kubectl get pods
  120  kubectl describe pod busybox
  121  kubectl get pods
  122  kubectl delete pod busybox
  123  kubectl run busybox --image=busybox
  124  kubectl get pods
  125  kubectl describe pod busybox
  126  minikube ssh
  127  kubectl get pods
  128  kubectl delete pod busybox
  129  history
  130  kubectl explain pod.spec | less
  131  kubectl explain pod.spec.securityContext | less
  132  vim securitycontextdemo2.yaml
  133  kubectl apply -f securitycontextdemo2.yaml
  134  kubectl exec -it security-context-demo -- sh
  135  vim securitycontextdemo.yaml
  136  kubectl create -f securitycontextdemo.yaml
  137  kubectl get pods
  138  kubectl describe pod nginxsecure
  139  kubectl delete -f securitycontextdemo.yaml
  140  kubectl create job -h | less
  141  kubectl create job onejob --image=busybox -- date
  142  kubectl get pods,jobs
  143  kubectl get jobs onejob -o yaml | less
  144  kubectl get pods,jobs
  145  kubectl delete job onejob
  146  kubectl get pods,jobs
  147  kubectl create job mynewjob --image=busybox --dry-run=client -o yaml -- sleep 5 > mynewjob.yaml
  148  vim mynewjob.yaml
  149  kubectl create -f mynewjob.yaml
  150  vim mynewjob.yaml
  151  kubectl create -f mynewjob.yaml
  152  kubectl get pods,jobs
  153  history
  154  kubectl create cronjob
  155  kubectl create cronjob -h | less
  156  kubectl create cronjob runme --image=busybox --schedule="* * * * *" -- echo greetings from the cluster
  157  kubectl get cronjobs,jobs,pods
  158  kubectl logs runme-27971466-wnnj8
  159  kubectl get cronjobs,jobs,pods
  160  kubectl create job --from=cronjob runme
  161  kubectl create job myjob --from=cronjob runme
  162  kubectl create job -h
  163  kubectl create job myjob --from=cronjob/runme
  164  kubectl get cronjobs,jobs,pods
  165  kubectl create cronjob -h | less
  166  create create quota -h | less
  167  kubectl create quota -h | less
  168  kubectl create deploy myapp --image=nginx
  169  kubectl set resources -h | less
  170  kubectl set resources deploy myapp --limits=cpu=200m,memory=512Mi --requests=cpu=100m,memory=256Mi
  171  kubectl get deploy myapp -o yaml
  172  vim frontend-resources.yaml
  173  kubectl apply -f frontend-resources.yaml
  174  kubectl get pods
  175  kubectl describe pod frontend
  176  sudo reboot
  177  cd ckad/
  178  ./countdown 2
  179  ./countdown 12
  180  cat dockerfile/ex1.txt
  181  ./countdown 15
  182  sudo apt install vim git -y
  183  free -m
  184  lscpu | less
  185  df -h
  186  git clone https://github.com/sandervanvugt/ckad
  187  cd ckad
  188  ls
  189  ./minikube-docker-setup.sh
  190  cd ckad/
  191  ./countdown 3
  192  kubectl explain pod.spec | less
  193  cd dockerfile/
  194  vim ex2.txt
  195  kubectl explain pod.spec | less
  196  minikube start
  197  df -h
  198  sudo lsblk
  199  sudo poweroff
  200  df -h
  201  sudo gdisk /dev/sda
  202  sudo reboot
  203  cd ckad
  204  ./countdown 12
  205  source <(kubectl completion bash)
  206  df -h
  207  mount | grep sda3
  208  sudo resize2fs /dev/sda3
  209  df -h
  210  history
  211  minikube start
  212  kubectl get pods
  213  minikube ssh
  214  kubectl get pods
  215  kubectl describe pods frontend
  216  kubectl get pods
  217  kubectl describe pod frontend | less
  218  cd ckad
  219  kubectl delete -f frontend.yaml
  220  kubectl delete -f frontend-resources.yaml
  221  vim frontend-resources.yaml
  222  kubectl apply -f frontend-resources.yaml
  223  kubectl get pods
  224  source <(kubectl completion bash)
  225  kubectl describe pod frontend
  226  vim frontend-resources.yaml
  227  kubectl delete pod frontend
  228  kubectl apply -f frontend-resources.yaml
  229  kubectl get pods
  230  kubectl delete pods frontend
  231  history
  232  minikube ssh
  233  vim zs.yaml
  234  kubectl apply -f zs.yaml
  235  kubectl get pods
  236  kubectl describe pod my-webserver-pod
  237  minikube ssh
  238  kubectl get pods
  239  minikube ssh
  240  kubectl run sanderdb --image=mariadb
  241  minikube ssh
  242  kubectl get pods
  243  minikube ssh
  244  kubectl delete pod sanderdb
  245  sudo -i
  246  minikube ssh
  247  ./countdown 7
  248  kubectl get pods
  249  kubectl run sanderpod --image=mariadb
  250  kubectl logs sanderpod
  251  minikube ssh
  252  kubectl delete pod sanderpod
  253  minikube ssh
  254  vim busybox-ready.yaml
  255  kubectl create -f busybox-ready.yaml
  256  kubectl get pods
  257  kubectl describe pod busybox-ready
  258  kubectl edit pod busybox-ready
  259  kubectl exec -it busybox-ready -- sh
  260  kubectl get pods
  261  kubectl get deploy,jobs,pods
  262  for i in $(kubectl get deploy,jobs,pods); do kubectl delete $i; done
  263  for i in $(kubectl get deploy,jobs,pods | awk '{ print $1 }'); do kubectl delete $i; done
  264  kubectl get pods
  265  vim nginx-probes.yaml
  266  kubectl create -f nginx-probes.yaml
  267  kubectl get pods
  268  kubectl create deploy myweb --image=nginx --replicas=3
  269  kubectl describe deployments.apps myweb | less
  270  kubectl get all
  271  kubectl delete cronjob runme
  272  kubectl get all
  273  kubectl get all --selector app=myweb
  274  kubectl delete pod myweb-5b7f574f7f-vs788
  275  kubectl get all --selector app=myweb
  276  vim redis-deploy.yaml
  277  kubectl apply -f redis-deploy.yaml
  278  vim redis-deploy.yaml
  279  kubectl api-versions | less
  280  kubectl api-resources
  281  kubectl api-resources | less
  282  kubectl api-versions
  283  vim redis-deploy.yaml
  284  kubectl apply -f redis-deploy.yaml
  285  kubectl edit deployments.apps redis
  286  kubectl get all
  287  kubectl edit replicasets.apps redis-6dc855767d
  288  kubectl get all
  289  kubectl delete rs redis-6dc855767d
  290  kubectl get all
  291  kubectl scale deployment redis --replicas=0
  292  kubectl get all
  293  kubectl create deploy nginx-lab7 --replicas=3 --image=nginx
  294  kubectl get all
  295  kubectl api-resources | less
  296  kubectl create deploy nginxup --image=nginx:1.14
  297  kubectl scale deployment nginxup --replicas=4
  298  kubectl get all --selector app=nginxup
  299  kubectl set image deploy nginxup nginx=nginx:1.17
  300  kubectl get all --selector app=nginxup
  301  kubectl get deployments.apps nginxup -o yaml | less
  302  kubectl create deploy example -h | less
  303  kubectl create deploy example --image=nginx -o yaml --dry-run=client > example.yaml
  304  vim example.yaml
  305  kubectl apply -f example.yaml
  306  kubectl get all --selector app=example
  307  kubectl set image deploy example bob=nginx:1.17
  308  kubectl get all --selector app=example
  309  history
  310  kubectl get all
  311  kubectl get deployments.apps redis -o yaml | less
  312  kubectl create deploy bluelabel --image=nginx
  313  kubectl label deploy bluelabel state=demo
  314  kubectl get deploy --show-labels
  315  kubectl get all --selector state=demo
  316  kubectl get all --selector app=bluelabel
  317  kubectl describe deploy bluelabel | less
  318  kubectl get all | grep b lue
  319  kubectl get all | grep blue
  320  kubectl get all
  321  kubectl delete deploy example nginxup nginx-lab7 redis myweb
  322  kubectl get all
  323  kubectl scale deployment bluelabel --replicas 3
  324  kubectl get all
  325  kubectl label pod bluelabel-5cdb7645b5-pjvf8 app-
  326  kubectl get all
  327  kubectl get pods --show-labels
  328  kubectl run testpod --image=busybox -- sleep infinity
  329  kubectl get pods --show-labels
  330  kubectl get pods --show-labels | grep run
  331  kubectl get deploy bluelabel -o yaml
  332  kubectl get all
  333  kubectl scale deployment bluelabel --replicas 4
  334  kubectl get all
  335  kubectl set env deploy bluelabel type=blended
  336  kubectl get all
  337  kubectl delete pod bluelabel-5cdb7645b5-pjvf8
  338  kubectl get all
  339  kubectl get deployments.apps bluelabel -o yaml | less
  340  vim rolling.yaml
  341  kubectl apply -f rolling.yaml
  342  kubectl rollout history deployment
  343  kubectl edit deployments.apps rolling-nginx
  344  kubectl rollout history deployment
  345  kubectl rollout history deployment rolling-nginx --revision=2
  346  kubectl rollout history deployment rolling-nginx --revision=1
  347  kubectl rollout undo deployment rolling-nginx --to-revision=1
  348  kubectl rollout history deployment
  349  kubectl get all
  350  ./countdown 12
  351  kubectl create deployment nginxsvc --image=nginx --replicas=3
  352  kubectl get all --selector app=nginxsvc
  353  kubectl get all --selector app=nginxsvc -o wide
  354  kubectl expose deployment nginxsvc --port=80
  355  kubectl get all --selector app=nginxsvc -o wide
  356  kubectl describe svc nginxsvc
  357  kubectl get endpoints
  358  kubectl get svc
  359  curl 10.106.84.96
  360  minikube ssh
  361  kubectl edit svc nginxsvc
  362  kubectl get svc
  363  minikube ip
  364  curl 192.168.49.2:30089
  365  kubectl describe svc nginxsvc
  366  kubectl edit svc nginxsvc
  367  kubectl get svc
  368  kubectl get endpoints
  369  kubectl edit svc nginxsvc
  370  kubectl get endpoints
  371  kubectl get all
  372  kubectl run testpod --image=busybox -- sleep infinity
  373  kubectl get testpod
  374  kubectl get pods
  375  kubectl get svc
  376  kubectl exec -it testpod -- cat /etc/resolv.conf
  377  kubectl exec -it testpod -- nslookup nginxsvc
  378  kubectl get ns
  379  kubectl get pods -n secret
  380  kubectl run secretweb --image=nginx -n secret
  381  kubectl expose -n secret pod secretweb
  382  kubectl expose -n secret pod secretweb --port=80
  383  kubectl exec -it testpod -- nslookup secretweb
  384  kubectl exec -it testpod -- nslookup secretweb.secret.svc.cluster.local
  385  kubectl exec -it testpod -- cat /etc/resolv.conf
  386  vim nwpolicy-complete-example.yaml
  387  kubectl apply -f nwpolicy-complete-example.yaml
  388  kubectl expose pod nginx --port=80
  389  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  390  kubectl label pod busybox access=true
  391  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  392  vim nwpolicy-complete-example.yaml
  393  kubectl describe networkpolicy access-nginx
  394  kubectl get pods --show-label
  395  kubectl get pods --show-labels
  396  kubectl create -h | less
  397  kubectl autoscale -h | less
  398  minikube addons lists
  399  minikube addons list
  400  minikube addons enable metrics-server
  401  kubectl top pods
  402  history
  403  sudo poweroff
  404  cd ckad
  405  ./countdown 1
  406  ./countdown 5
  407  ./countdown 1
  408  cd ../Downloads/
  409  ls
  410  tar xvf helm-v3.11.2-linux-amd64.tar.gz
  411  sudo mv linux-amd64/helm /usr/local/bin/
  412  helm version
  413  exit
  414  minikube start
  415  kubectl get all
  416  kubectl top pods
  417  minikube addons list
  418  minikube addons enable ingress
  419  kubectl get ns
  420  source <(kubectl completion bash)
  421  kubectl get all -n ingress-nginx
  422  kubectl get svc
  423  curl 192.168.49.2:30089
  424  kubectl create ingress -h | less
  425  kubectl create ingress nginxsvc-ingress --rule="/=nginsvc:80" --rule=/hello=newdep:8080"
  426  kubectl create ingress nginxsvc-ingress --rule="/=nginsvc:80" --rule="/hello=newdep:8080"
  427  sudo vim /etc/hosts
  428  kubectl get ingress
  429  curl nginxsvc.indo
  430  cat /etc/hosts
  431  curl nginxsvc.info
  432  kubectl describe ingress nginxsvc-ingress
  433  kubectl edit ing nginxsvc-ingress
  434  kubectl describe ingress nginxsvc-ingress
  435  curl nginxsvc.info
  436  curl nginxsvc.info/hello
  437  kubectl create deploy newdep --image=gcr.io/google-samples/hello-app:2.0
  438  kubectl expose deploy newdep --port=8080
  439  curl nginxsvc.info/hello
  440  kubectl explain pod.spec.volumes | less
  441  cd ckad
  442  cat morevolumes.yaml
  443  kubectl apply -f morevolumes.yaml
  444  kubectl get pods
  445  kubectl describe pods morevol2 | less
  446  kubectl -it morevol2 -c centos1 -- touch /centos1/test
  447  kubectl exec -it morevol2 -c centos1 -- touch /centos1/test
  448  kubectl exec -it morevol2 -c centos2 -- ls /centos2/
  449  vim pv.yaml
  450  kubectl apply -f pv.yaml
  451  kubectl describe pv pv-volume
  452  vim pvc.yaml
  453  kubectl apply -f pvc.yaml
  454  kubectl get pvc,pv
  455  kubectl get storageclass
  456  kubectl describe pvc pv-claim
  457  kubectl describe pv pvc-43d5aaf1-0a7c-419a-8624-ae8edabcd20c
  458  vim pvc-pod.yaml
  459  kubectl apply -f pvc-pod.yaml
  460  kubectl get pvc,pv
  461  kubectl describe pv pvc-3961ac15-1dd6-4393-9fe3-979a8faeac97
  462  kubectl exec nginx-pvc-pod -- touch /usr/share/nginx/html/testfile
  463  minikube ssh
  464  kubectl get pvc
  465  kubect delete pvc pv-claim
  466  kubectl delete pvc pv-claim
  467  kubectl explain pvc.spec | less
  468  vim pvc.yaml
  469  kubectl delete -f pv.yaml
  470  vim pv.yaml
  471  kubectl apply -f pv.yaml
  472  kubectl apply -f pvc.yaml
  473  kubectl get pvc,pv
  474  history
  475  kubectl get deploy
  476  kubectl create deploy mydb --image=mariadb
  477  kubectl describe pods mydb-7978c6b495-fc8k9
  478  kubectl log mydb-7978c6b495-fc8k9
  479  kubectl logs mydb-7978c6b495-fc8k9
  480  kubectl set env deploy mydb MARIADB_ROOT_PASSWORD=password
  481  kubectl get all --selector app=mydb
  482  kubectl get deployments.apps mydb -o yaml > mydb.yaml
  483  vim mydb.yaml
  484  ./countdown 12
  485  vim varsfile
  486  kubectl create cm mydbvars --from-env-file=varsfile
  487  rm -f varsfile
  488  kubectl describe cm mydbvars
  489  kubectl delete deploy mydb
  490  kubectl create deploy mydb --image=mariadb --replicas=3
  491  kubectl get all --selector app=mydb
  492  kubectl set env deploy mydb --from=configmap/mydbvars
  493  kubectl get all --selector app=mydb
  494  kubectl get deploy mydb -o yaml
  495  kubectl set env -h | less
  496  echo hello world > index.html
  497  kubectl create cm myindex --from-file=index.html
  498  kubectl describe cm myindex
  499  kubectl create cm mypasswd --from-file=/etc/passwd
  500  kubectl describe cm mypasswd
  501  kubectl create deployment myweb --image=nginx --dry-run=client -o yaml >myweb.yaml
  502  vim myweb.yaml
  503  kubectl apply -f myweb.yaml
  504  kubectl expose deployment myweb --type=NodePort --port=80
  505  kubectl get svc
  506  curl 192.168.49.2:32111
  507  history
  508  kubectl create secret -h | less
  509  kubectl create secret docker-registry -h | less
  510  kubectl create secret generic dbpw --from-literal=ROOT_PASSWORD=password
  511  kubectl describe secret dbpw
  512  kubectl get secret dbpw -o yaml
  513  echo cGFzc3dvcmQ= | base64 -d
  514  kubectl create deployment mynewdb --image=mariadb
  515  kubectl set env deploy mynewdb --from=secret/dbpw --prefix=MARIADB_
  516  kubectl get all
  517  ./countdown 12
  518  kubectl api-resources | less
  519  kubectl proxy --port=8001 &
  520  kubectl create deploy curlginx --image=nginx --replicas=3
  521  curl http://localhost:8001/version
  522  curl http:/localhost:8001/api/v1/namespaces/default/pods
  523  kubectl get pods
  524  curl http:/localhost:8001/api/v1/namespaces/default/pods/nginx/
  525  curl -XDELETE http:/localhost:8001/api/v1/namespaces/default/pods/nginx/
  526  kubectl get pods
  527  history
  528  kubectl auth can-i get pods
  529  kubectl auth can-i get pods --as bob@example.com
  530  kubectl get pods nginx-probes -o yaml | less
  531  kubectl get sa
  532  kubectl get pods -n kube-system
  533  kubectl get pods -n kube-system storage-provisioner -o yaml | grep -i serviceacc
  534  kubectl get roles
  535  kubectl get roles -A
  536  kubectl get clusterroles
  537  kubectl get clusterroles | less
  538  kubectl get clusterrolebindings.rbac.authorization.k8s.io
  539  kubectl get clusterrolebindings.rbac.authorization.k8s.io | less
  540  vim mypod.yaml
  541  kubectl apply -f mypod.yaml
  542  kubectl get pods mypod -o yaml | less
  543  kubectl exec -it mypod --sh
  544  kubectl exec -it mypod -- sh
  545  cat mysa.yaml
  546  kubectl apply -f mysa.yaml
  547  vim list-pods.yaml
  548  kubectl apply -f list-pods.yaml
  549  vim list-pods-mysa-binding.yaml
  550  kubectl apply -f list-pods-mysa-binding.yaml
  551  vim mysapod.yaml
  552  kubectl apply -f mysapod.yaml
  553  apk add --update curl
  554  kubectl exec -it mysapod -- sh
  555  exit
  556  helm version
  557  helm repo add bitnami https://charts.bitnami.com/bitnami
  558  helm repo list
  559  helm search repo bitnami
  560  helm repo update
  561  helm install bitnami/mysql --generate-name
  562  kubectl get all
  563  helm show chart bitnami/mysql
  564  helm show all bitnami/mysql
  565  helm list
  566  helm status mysql-1678384898
  567  helm show values bitnami/nginx
  568  helm pull bitnami/nginx
  569  tar xvf nginx-13.2.29.tgz
  570  vim nginx/values.yaml
  571  helm template --debug nginx
  572  helm install -f nginx/values.yaml mynginx nginx/
  573  helm list
  574  cd ckad
  575  ./countdown 12
  576  kubectl create deploy blue-nginx --image=nginx:1.14 --replicas=3
  577  kubectl expose deploy blue-nginx --port=80 --name=bgnginx
  578  kubectl get all --selector app=blue-nginx
  579  source <(kubectl completion bash)
  580  kubectl get deployments.apps blue-nginx -o yaml > green-nginx.yaml
  581  vim green-nginx.yaml
  582  kubectl create -f green-nginx.yaml
  583  kubectl get all --selector app=blue-nginx --selector app=green-nginx
  584  kubectl get all --selector app=blue-nginx,app=green-nginx
  585  kubectl get deploy
  586  kubectl describe svc bgnginx
  587  kubectl edit svc bgnginx
  588  kubectl describe svc bgnginx
  589  kubectl get pods -o wide
  590  kubectl create deploy old-nginx --image=nginx:1.14 --replicas=3 --dry-run=client -o yaml > ~/oldnginx.yaml
  591  vim ~/oldnginx.yaml
  592  kubectl create -f ~/oldnginx.yaml
  593  kubectl expose deploy old-nginx --name=oldnginx --port=80 --type=NodePort --selector type=canary
  594  kubectl get svc
  595  kubectl get endpoints
  596  curl 192.168.49.2:32462
  597  kubectl cp old-nginx-654f595c5-vlsnm:/usr/share/nginx/html/index.html ./index.html
  598  vim index.html
  599  kubectl create cm canary --from-file=index.html
  600  vim canary.yaml
  601  kubectl create -f canary.yaml
  602  kubectl describe svc oldnginx
  603  curl 192.168.49.2:32462
  604  kubectl scale deployment new-nginx --replicas 3
  605  kubectl scale deployment old-nginx --replicas 0
  606  history
  607  kubectl api-resources | less
  608  vim crd-object.yaml
  609  kubectl apply -f crd-object.yaml
  610  kubectl api-resources | grep backup
  611  vim crd-backup.yaml
  612  kubectl apply -f crd-backup.yaml
  613  kubectl get backups
  614  history