history-26sep24.txt

    1  sudo apt install ubuntu-desktop
    2  sudo systemctl get-default
    3  sudo systemctl disable pd-mapper.service 
    4  sudo systemctl disable systemd-networkd-wait-online
    5  sudo apt update -y
    6  ip a
    7  ping nu.nl
    8  sudo apt update
    9  sudo apt upgrade
   10  sudo dpkg --configure -a
   11  sudo reboot
   12  sudo -i
   13  sudo poweroff
   14  ./countdown 1
   15  ./countdown 12
   16  minikube start
   17  minikube stop
   18  minikube start --help
   19  free -m
   20  minikube start --memory=3g --cni=calico
   21  minikube delete
   22  minikube start --memory=3g --cni=calico
   23  minikube status
   24  kubectl get all
   25  docker
   26  ls
   27  cd dockerfile/
   28  ls
   29  vim Dockerfile 
   30  docker build -t countdown .
   31  docker images
   32  docker run countdown
   33  docker run countdown 2
   34  history
   35  cat Dockerfile 
   36  docker run --name customweb -it nginx sh
   37  docker commit customweb nginx:custom
   38  docker images
   39  docker run -it nginx:custom ls -l /tmp/testfile
   40  kubectl get ns
   41  source <(kubectl completion bash)
   42  kubectl completion --help | less
   43  kubectl get pods
   44  kubectl run -h | less
   45  kubectl run appone --image=nginx
   46  kubectl get pods
   47  kubectl get pods -A
   48  kubectl create ns secret
   49  kubectl run secretpod --image=nginx -n secret
   50  kubectl get pods
   51  kubectl get pods -n secret
   52  history
   53  cd ..
   54  vim 25init.yaml
   55  kubectl apply -f 25init.yaml 
   56  kubectl get all
   57  vim 25init.yaml
   58  kubectl apply -f 25init.yaml 
   59  kubectl get pods
   60  cat 25init.yaml 
   61  kubectl get pods
   62  history
   63  cat 25init.yaml 
   64  vim docs.yaml
   65  kubectl apply -f docs.yaml
   66  kubectl get pods
   67  kubectl delete -f docs.yaml
   68  kubectl get pods
   69  kubectl run nginx1 --image=nginx
   70  kubectl get pods nginx1 -o yaml | less
   71  kubectl delete pods nginx1
   72  kubectl get pods
   73  kubectl run nginx2 --image=nginx
   74  minikube ssh
   75  kubectl get pods
   76  grep centos *
   77  vim sidecar.yaml 
   78  kubectl apply -f sidecar.yaml 
   79  kubectl get pods
   80  kubectl describe pod sidecar-pod 
   81  kubectl logs sidecar-pod 
   82  kubectl logs sidecar-pod -c sidecar
   83  arch
   84  kubectl get pods
   85  kubectl delete pod sidecar-pod 
   86  kubectl explain jobs.spec | less
   87  kubectl create job onejob --image=busybox -- date
   88  kubectl get jobs,pods
   89  kubectl get pods onejob-w69wh -o yaml | less
   90  kubectl get jobs onejob -o yaml | less
   91  kubectl get jobs,pods
   92  kubectl delete job onejob 
   93  kubectl get jobs,pods
   94  kubectl create job twojob --image=busybox --dry-run=client -o yaml -- sleep 5 > twojob.yaml
   95  vim twojob.yaml 
   96  kubectl apply -f twojob.yaml 
   97  kubectl get jobs,pods
   98  kubectl explain pod.spec | less
   99  kubectl explain pod.spec.containers | less
  100  kubectl get jobs,pods
  101  kubectl delete pod initdemo
  102  kubectl create cronjob -h | less
  103  kubectl create cronjob runme --image=busybox --schedule="*/2 * * * *" -- echo greetings from the cluster
  104  kubectl get cronjobs,jobs,pods
  105  date
  106  kubectl create job runme --from=cronjob/runme
  107  kubectl get cronjobs,jobs,pods
  108  kubectl logs runme-tkpj2 
  109  kubectl delete cronjobs.batch runme 
  110  history
  111  vim twojob.yaml 
  112  kubectl apply -f twojob.yaml 
  113  vim twojob.yaml 
  114  kubectl create job threejob --image=busybox --dry-run=client -o yaml -- false > threejob.yaml
  115  vim threejob.yaml 
  116  kubectl apply -f threejob.yaml 
  117  kubectl get jobs,pods
  118  vim frontend-resources.yaml 
  119  kubectl create -f frontend-resources.yaml 
  120  kubectl get pods
  121  kubectl get jobs
  122  kubectl delete job threejob 
  123  kubectl get pods
  124  kubectl delete -f frontend-resources.yaml 
  125  vim frontend-resources.yaml 
  126  kubectl apply -f frontend-resources.yaml 
  127  kubectl get pods
  128  kubectl get pods -n kube-system 
  129  kubectl describe pod frontend 
  130  vim frontend-resources.yaml 
  131  kubectl apply -f frontend-resources.yaml 
  132  kubectl delete -f frontend-resources.yaml 
  133  kubectl create -f frontend-resources.yaml 
  134  kubectl delete -f frontend-resources.yaml 
  135  vim frontend-resources.yaml 
  136  kubectl create -f frontend-resources.yaml 
  137  kubectl get pods
  138  kubectl describe pod frontend 
  139  kubectl logs frontend -c db
  140  kubectl delete -f frontend-resources.yaml 
  141  kubectl create deploy upapp --image=nginx:1.17 --replicas=5
  142  kubectl get all
  143  kubectl get deployments.apps upapp -o yaml | grep -A5 strategy
  144  kubectl set -h | less
  145  kubectl set image -h | less
  146  #kubectl set image deploy/upapp nginx=nginx:1.18
  147  #kubectl get all --selector app=upapp
  148  kubectl set image deploy/upapp nginx=nginx:1.18
  149  kubectl get all --selector app=upapp
  150  kubectl get all --show-labels
  151  kubectl edit deploy upapp
  152  kubectl set image deploy/upapp nginx=nginx:1.19
  153  kubectl get all --show-labels
  154  vim rolling.yaml 
  155  kubectl create -f rolling.yaml 
  156  kubectl rollout history deployment 
  157  kubectl edit deployments.apps rolling-nginx 
  158  kubectl rollout history deployment 
  159  kubectl describe deployments.apps rolling-nginx 
  160  kubectl describe deployments.apps rolling-nginx --revision=2
  161  kubectl rollout history deployment rolling-nginx --revision=2
  162  kubectl rollout history deployment rolling-nginx --revision=1
  163  kubectl rollout undo deployment rolling-nginx --to-revision=1
  164  kubectl rollout -h
  165  history
  166  kubectl get all
  167  kubectl get deploy --show-labels
  168  kubectl get all
  169  kubectl describe pod rolling-nginx-6bd86fdcfb-nghnm 
  170  kubectl get pods
  171  kubectl get pods rolling-nginx-59f94dfcb4-8snhs 
  172  kubectl get pods rolling-nginx-59f94dfcb4-8snhs -o yaml | less
  173  kubectl delete -f rolling.yaml 
  174  kubectl get all
  175  kubectl apply -f rolling.yaml 
  176  kubectl get pods
  177  kubectl logs rolling-nginx-6bd86fdcfb-2kxzm 
  178  kubectl describe rolling-nginx-6bd86fdcfb-2kxzm 
  179  kubectl describe pod rolling-nginx-6bd86fdcfb-2kxzm 
  180  kubectl delete -f rolling.yaml 
  181  vim rolling.yaml 
  182  kubectl create -f rolling.yaml 
  183  kubectl get all
  184  kubectl delete -f rolling.yaml 
  185  kubectl get deploy
  186  kubectl delete deploy upapp 
  187  kubectl create deploy nginxsvc --image=nginx
  188  kubectl get all
  189  kubectl get all --selector app=nginxsvc
  190  kubectl get all --selector app=nginxsvc --show-labels
  191  kubectl get all --selector app=nginxsvc 
  192  kubectl scale deployment nginxsvc --replicas=3
  193  kubectl get all --selector app=nginxsvc 
  194  kubectl expose deployment nginxsvc --port=80
  195  kubectl get all --selector app=nginxsvc 
  196  kubectl describe svc nginxsvc 
  197  kubectl get svc
  198  curl 10.98.84.17
  199  minikube ssh
  200  kubectl edit svc nginxsvc 
  201  kubectl get svc
  202  minikube ip
  203  curl 192.168.49.2:31161
  204  kubectl edit svc nginxsvc 
  205  curl 192.168.49.2:31161
  206  kubectl get svc
  207  kubectl describe svc nginxsvc 
  208  kubectl edit svc nginxsvc 
  209  curl 192.168.49.2:31161
  210  kubectl edit svc nginxsvc 
  211  kubectl describe svc nginxsvc 
  212  kubectl edit svc nginxsvc 
  213  kubectl describe svc nginxsvc 
  214  history
  215  history > /tmp/history-25sep24.txt
  216  ip a
  217  ls
  218  sudo poweroff
  219  git clone https://github.com/sandervanvugt/ckad
  220  cd ckad
  221  ls
  222  ls *sh
  223  ./minikube-docker-setup.sh 
  224  minikube delete
  225  minikube start --memory=6g --cni=calico
  226  minikube start
  227  kubectl get all
  228  source <(kubectl completion bash)
  229  minikube status
  230  kubectl create deploy nginxsvc
  231  kubectl create deploy nginxsvc --image=nginx --replicas=3
  232  kubectl expose deploy nginxsvc --port=80
  233  kubectl describe svc -n kube-system kube-dns
  234  kubectl create ns elsewhere
  235  kubectl run nginxpod -n elsewhere 
  236  kubectl run nginxpod -n elsewhere --image=nginx
  237  kubectl expose -n elsewhere nginxpod --port=80
  238  kubectl expose -n elsewhere pod nginxpod --port=80
  239  kubectl get svc,pods -n elsewhere 
  240  kubectl run testpod --image=busybox -- sleep infinity
  241  kubectl exec -it testpod -- cat /etc/resolv.conf
  242  kubectl exec -it testpod -- wget --spider --timeout=1 nginxpod
  243  kubectl exec -it testpod -- wget --spider --timeout=1 nginxpod.elsewhere.svc.cluster.local
  244  minikube addons list
  245  minikube addons enable ingress
  246  kubectl get ns
  247  kubectl get all -n ingress-nginx 
  248  kubectl create ingress -h | less
  249  kubectl get all
  250  kubectl create ing nginx-ingress --rule="/=nginxsvc:80" --rule="/hello=newdep:8080"
  251  kubectl describe ing nginx-ingress 
  252  minikube ip
  253  sudo vim /etc/hosts
  254  curl nginxsvc.info
  255  curl nginxsvc.info/hello
  256  kubectl create deploy newdep --image=gcr.io/google-samples/hello-app:2.0
  257  kubectl expose deploy newdep --port=8080
  258  curl nginxsvc.info/hello
  259  kubectl get pods
  260  kubectl logs newdep-5bd57cc949-5zdqp 
  261  kubectl get pods -n kube-system | grep -i calico
  262  cd ckad/
  263  vim nwpolicy-complete-example.yaml 
  264  kubectl apply -f nwpolicy-complete-example.yaml 
  265  kubectl expose pod nginx --port=80
  266  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  267  kubectl get pods --show-labels
  268  kubectl label pod busybox access=true
  269  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  270  kubectl get networkpolicy
  271  kubectl describe networkpolicy
  272  kubectl get pods --show-labels
  273  vim simplenwp.yaml
  274  kubectl get pods
  275  kubectl get pods busybox -o yaml | less
  276  kubectl api-resources | less
  277  vim simplenwp.yaml
  278  kubectl api-resources | less
  279  vim redis-deploy.yaml 
  280  kubectl create -f redis-deploy.yaml 
  281  kubectl api-resources | less
  282  vim redis-deploy.yaml 
  283  kubectl create -f redis-deploy.yaml 
  284  vim crd-object.yaml 
  285  kubectl api-resources | grep -i back
  286  kubectl create -f crd-object.yaml 
  287  kubectl api-resources | grep -i back
  288  cat crd-backup.yaml 
  289  kubectl create -f crd-backup.yaml 
  290  kubectl get backups -o yaml
  291  kubectl api-resources
  292  /ingress
  293  kubectl api-resources | less
  294  history
  295  vim redis.yaml 
  296  vim redis2.yaml
  297  kubectl apply -f redis2.yaml 
  298  kubectl describe pods redis
  299  kubectl exec -it redis -- touch /data/redis/helloworld
  300  minikube ssh
  301  kubectl get pods
  302  kubectl exec -it redis -- ls -l /data/redis
  303  minikube ssh
  304  kubectl delete --force pod redis
  305  minikube ssh
  306  kubectl explain pod.spec.volumes | less
  307  kubectl apply -f https://k8s.io/examples/pods/storage/pv-volume.yaml
  308  kubectl describe pv task-pv-volume 
  309  minikube addons list
  310  kubectl get storageclass
  311  kubectl describe storageclasses.storage.k8s.io 
  312  kubectl apply -f https://k8s.io/examples/pods/storage/pv-claim.yaml
  313  kubectl get pvc task-pv-claim -o yaml
  314  kubectl get pvc,pv
  315  kubectl api-resources | less
  316  kubectl apply -f https://k8s.io/examples/pods/storage/pv-pod.yaml
  317  kubectl describe pod task-pv-pod 
  318  kubectl exec task-pv-pod -- touch /usr/share/nginx/html/testfile
  319  kubectl describe pv pv-volume
  320  kubectl describe pv task-pv-volume 
  321  minikube ssh
  322  kubectl create deploy mydb --image=mariadb
  323  kubectl get pods
  324  kubectl logs mydb-7d665fb947-9q44f 
  325  kubectl set env deploy mydb MYSQL_ROOT_PASSWORD=password
  326  kubectl get all --selector app=mydb
  327  kubectl get deploy mydb -o yaml | less
  328  kubectl get deploy
  329  kubectl delete deploy mydb newdep redis 
  330  kubectl create deployment mydb --image=mariadb --replicas=3
  331  kubectl create cm mydbvars --from-literal=ROOT_PASSWORD=password
  332  kubectl describe cm mydbvars 
  333  kubectl set env deploy/mydb --from configmap/mydbvars --prefix=MARIADB_
  334  kubectl get deployments.apps mydb -o yaml | grep env -A 5
  335  history
  336  echo hello world > index.html
  337  kubectl create cm myindex --from-file=index.html
  338  kubectl describe cm myindex
  339  kubectl create deploy myweb --image=nginx
  340  kubectl edit deploy myweb
  341  kubectl expose deploy myweb --port=80
  342  kubectl edit svc myweb
  343  kubectl get svc
  344  curl 192.168.49.2:31873
  345  kubectl create secret generic dbpw --from-literal=ROOT_PASSWORD=password
  346  kubectl describe secrets dbpw 
  347  kubectl get secret dbpw -o yaml
  348  echo cGFzc3dvcmQ= | base64 -d
  349  kubectl create deploy mynewdb --image=mariadb
  350  kubectl set env deploy mynewdb --from=secret/dbpw --prefix=MYSQL_
  351  kubectl get deploy -o yaml | grep -A 5 env
  352  history
  353  echo old nginx > index.html
  354  kubectl create cm old --from-file=index.html
  355  echo new nginx > index.html
  356  kubectl create cm new --from-file=index.html
  357  vim canary.yaml 
  358  kubectl apply -f canary.yaml 
  359  sed -i -e 's/old/new/' canary.yaml 
  360  vim canary.yaml 
  361  kubectl apply -f canary.yaml 
  362  kubectl get all --selector type=canary
  363  kubectl expose deployment old-version --name=theapp --port=80 --selector type=canary --type=NodePort
  364  kubectl expose deployment old-nginx --name=theapp --port=80 --selector type=canary --type=NodePort
  365  kubectl describe svc theapp 
  366  curl 192.168.49.2:31597
  367  history
  368  kubectl get pods
  369  kubectl get pods testpod -o yaml | less
  370  kubectl get roles -A
  371  kubectl get clusterroles 
  372  kubectl get clusterrolebindings 
  373  kubectl get clusterrolebindings | grep -v ':'
  374  kubectl get pods -n kube-system
  375  kubectl get pods -n kube-system calico-node-6tvh5 -o yaml | less
  376  kubectl create ns bellevue
  377  kubectl create role -h | less
  378  kubectl create role viewer --verb=get --verb=list --verb=watch --resource=pods -n bellevue
  379  kubectl describe role viewer
  380  kubectl describe role viewer -n bellevue
  381  kubectl create sa viewer -n bellevue
  382  kubectl create rolebinding --serviceaccount=bellevue:viewer --role=viewer -n bellevue
  383  kubectl create rolebinding viewer --serviceaccount=bellevue:viewer --role=viewer -n bellevue
  384  kubectl create deploy viewginx --image=nginx --replicas=3 -n bellevue
  385  kubectl set serviceaccount deployment viewginx viewer -n bellevue
  386  kubectl auth can-i get pods --as=system:serviceaccount:bellevue:viewer -n bellevue
  387  kubectl auth can-i get deploy --as=system:serviceaccount:bellevue:viewer -n bellevue
  388  kubectl auth can-i -h | less
  389  kubectl describe serviceaccounts coredns -n kube-system 
  390  kubectl describe clusterrolebindings.rbac.authorization.k8s.io system:coredns
  391  kubectl describe clusterrole system:coredns
  392  kubectl get sa -n bellevue
  393  vim securitycontextdemo2.yaml 
  394  kubectl apply -f securitycontextdemo2.yaml 
  395  kubectl exec -it security-context-demo -- sh
  396  vim securitycontextdemo.yaml 
  397  kubectl apply -f securitycontextdemo.yaml 
  398  kubectl get pods
  399  kubectl describe pod nginxsecure 
  400  ls
  401  cat RESOURCE.TXT 
  402  history > /tmp/history-26sep24.txt