CKA may23 day2

student@control:~/cka$ history
    1  sudo apt install vim git -y
    2  vim /etc/hosts
    3  sudo -i
    4  git clone https://github.com/sandervanvugt/cka
    5  ip a
    6  ip route show
    7  sudo -i
    8  top
    9  ./cka/
   10  ./cka/counter.sh 10
   11  exit
   12  history
   13  git clone https://github.com/sandervanvugt/cka
   14  cd cka
   15  ls *sh
   16  sudo ./setup-container.sh
   17  ls *sh
   18  sudo ./setup-kubetools.sh
   19  history
   20  sudo kubeadm init
   21  kubectl get all
   22  kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.26.0/manifests/tigera-operator.yaml
   23  kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.26.0/manifests/custom-resources.yaml
   24  kubectl get ns
   25  kubectl get pods
   26  kubectl get pods -n tigera-operator
   27  kubectl get pods -n kube-system
   28  kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.26.0/manifests/custom-resources.yaml
   29  kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.26.0/manifests/custom-resources.yaml
   30  kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.25.0/manifests/calico.yaml
   31  kubectl get ns
   32  kubectl get pods
   33  kubectl get pods -n kube-system
   34  kubectl get nodes
   35  kubectl create deploy testginx --image=nginx
   36  kubectl get pods
   37  kubectl get nodes
   38  history
   39  kubectl get pods -n kube-system
   40  source <(kubectl completion bash)
   41  kubectl create ns mynamespace
   42  kubectl run task2pod --image=alpine -- sleep 3600
   43  kubectl run -n mynamespace task2pod --image=alpine -- sleep 3600
   44  kubectl get pods -n mynamespace
   45  kubectl edit -n mynamespace pod task2pod
   46  history
   47  vim lab3.yaml
   48  kubectl apply -f lab3.yaml
   49  kubectl get pods
   50  kubectl describe pod task3pod
   51  kubectl run failingbox --image=busybox
   52  kubectl get pods
   53  kubectl delete pod failingbox
   54  kubectl run succesfulbox --image=busybox -- sleep 3600
   55  kubectl get pods
   56  kubectl get pods -o yaml
   57  kubectl get pods succesfulbox -o yaml | less
   58  kubectl create quota -h | less
   59  kubectl create ns limited
   60  kubectl create quota qtest --hard pods=3,cpu=100m.memory=500Mi -n limited
   61  kubectl create quota qtest --hard pods=3,cpu=100m,memory=500Mi -n limited
   62  kubectl describe quota -n limited
   63  kubectl create deploy nginx --image=nginx:latest --replicas=3 -n limited
   64  kubectl get all -n limited
   65  kubectl describe -n limited rs/nginx-7bf8c77b5b
   66  kubectl set -h
   67  kubectl set resources -h
   68  kubectl set resources -n limited --requests cpu=100m,memory=5Mi --limits cpu=200m,memory=20Mi
   69  kubectl set resources -n limited --requests cpu=100m,memory=5Mi --limits cpu=200m,memory=20Mi deploy nginx
   70  kubectl get all -n limited
   71  kubectl describe -n limited
   72  kubectl describe ns limited
   73  kubectl edit ns limited
   74  kubectl edit -n limited quota qtest
   75  kubectl get all -n limited
   76  kubectl scale -n limited deploy nginx --replicas=3
   77  kubectl get all -n limited
   78  ./counter.sh 8
   79  history
   80  cat /etc/os-release
   81  history | less
   82  vim nwpolicy-complete-example.yaml
   83  kubectl apply -f nwpolicy-complete-example.yaml
   84  kubectl expose pod nginx --port=80
   85  kubectl describe svc nginx
   86  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
   87  kubectl label pod busybox access=true
   88  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
   89  kubectl create ns nwp-namespace
   90  vim nwp-lab9-1.yaml
   91  kubectl create -f nwp-lab9-1.yaml
   92  kubectl expose pod nwp-nginx --port=80
   93  kubectl exec -it newp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx
   94  kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx
   95  kubectl exec -it nwp-busybox -n nwp-namespace -- nslookup nwp-nginx
   96  kubectl exec -it nwp-busybox -n nwp-namespace -- nslookup nwp-nginx.default.svc.cluster.local
   97  kubectl get svc
   98  kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local
   99  vim nwp-lab9-1.yaml
  100  vim nwp-lab9-2.yaml
  101  kubectl create -f nwp-lab9-2.yaml
  102  kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local
  103  kubectl create deployment busybox --image=busybox --sleep 3600
  104  kubectl create deployment busybox --image=busybox -- sleep 3600
  105  kubectl exec -it busybox-c95495658-ljctl -- wget --spider --timeout=1 nwp-nginx
  106  kubectl delete -f nwp-lab9-2.yaml
  107  echo google for ahmetdb
  108  ./counter.sh 20
  109  vim rh.yaml
  110  ./counter.sh 5
  111  vim rh.yaml
  112  vim wz.yaml
  113  history
  114  vim wz-lab6.yaml
  115  kubectl get pods
  116  kubectl get pods busybox -o yaml | less
  117  vim wz-lab6.yaml
  118  kubectl apply -f wz-lab6.yaml
  119  vim wz-lab6.yaml
  120  kubectl apply -f wz-lab6.yaml
  121  kubectl expose pod task6pod --port=80
  122  kubectl get svc
  123  kubectl edit svc task6pod
  124  kubectl get svc
  125  curl 192.168.29.81:31761
  126  kubectl get pods task6pod -o yaml | less
  127  kubectl exec -it task6pod -- sh
  128  kubectl exec -it task6pod -c nginx -- sh
  129  curl 192.168.29.81:31761
  130  kubectl delete -f wz-lab6.yaml
  131  vim wz-lab6.yaml
  132  kubectl apply -f wz-lab6.yaml
  133  kubectl expose pod task6podsvv --type=NodePort
  134  kubectl expose pod task6podsvv --type=NodePort --port=80
  135  kubectl get svc
  136  curl 192.168.29.81:30130
  137  history
  138  history -d 134
  139  ./counter.sh 5
  140  vim task4pod.yaml
  141  kubectl apply -f task4pod.yaml
  142  vim task4pod.yaml
  143  kubectl apply -f task4pod.yaml
  144  kubectl get pods
  145  vim wz4.yaml
  146  kubectl apply -f wz4.yaml
  147  kubectl get pods
  148  cd
  149  ls
  150  tar -xvf helm-v3.12.0-linux-amd64.tar.gz
  151  sudo cp linux-amd64/helm /usr/local/bin/
  152  helm --version
  153  helm version
  154  helm upgrade --install ingress-nginx ingress-nginx --repo https://kubernetes.github.io/ingress-nginx --namespace ingress-nginx --create-namespace
  155  kubectl get pods -n ingress-nginx
  156  kubectl get ns
  157  kubectl create deploy nginxsvc --image=nginx --port=80 --replicas=3
  158  kubectl get all --selector app=nginxsvc
  159  kubectl get all --selector app=nginxsvc -o wide
  160  kubectl expose deploy nginxsvc
  161  kubectl get all --selector app=nginxsvc -o wide
  162  kubectl describe svc nginxsvc
  163  kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info/*=nginxsvc:80
  164  kubectl port-forward -n ingress-nginx svc/ingress-nginx-controller 8080:80
  165  bg
  166  sudo vim /etc/hosts
  167  curl nginxsvc.info:8080
  168  kubectl edit svc nginxsvc
  169  curl nginxsvc.info:8080
  170  kubectl get ingress
  171  kubectl describe ingress nginxsvc
  172  kubectl describe svc nginxsvc
  173  kubectl edit svc nginxsvc
  174  kubectl describe svc nginxsvc
  175  kubectl describe ingress nginxsvc
  176  curl nginxsvc.info:8080
  177  history
  178  kubectl get pods
  179  kubectl get pods busybox -o yaml | less
  180  kubectl get pods -n kube-system
  181  kubectl get pods -n kube-system calico-node-5pmxr -o yaml | less
  182  kubectl get roles
  183  kubectl get clusterroles
  184  kubectl get clusterroles | grep calico
  185  kubectl get clusterrole calico-node -o yaml | less
  186  kubectl get clusterrolebinding
  187  kubectl get clusterrolebinding | grep calic
  188  kubectl get clusterrolebinding calico-node -o yaml | less
  189  kubectl create role --help | less
  190  history
  191  vim wz10.txt
  192  kubectl create sa mysa
  193  kubectl get sa
  194  kubectl run mypod --dry-run=client -o yaml > mypod.yaml
  195  kubectl run mypod --dry-run=client --image=nginx -o yaml > mypod.yaml
  196  vim mypod.yaml
  197  kubectl apply -f mypod.yaml
  198  kubectl get pod mypod -o yaml | less
  199  history
  200  kubectl get pods -o wide
  201  kubectl get pods -n kube-system -o wide
  202  kubectl edit node control
  203  kubectl get pods -n kube-system etcd-control -o yaml | less
  204  cd cka/
  205  ./counter.sh 5
  206  kubectl edit
  207  kubectl edit node control
  208  kubectl create deploy taintdeploy --image=nginx --replicas=3
  209  kubectl get pods -o wide | grep taintd
  210  kubectl taint -h | less
  211  kubectl get nodes
  212  kubectl cordon -h | less
  213  kubectl drain -h | less
  214  kubectl cordon worker1
  215  kubectl get nodes
  216  kubectl edit node worker1
  217  kubectl uncordon worker1
  218  kubectl edit node worker1
  219  top
  220  kubectl top
  221  kubectl top pod
  222  kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
  223  kubectl -n kube-system get pods
  224  kubectl -n kube-system edit deployments.apps metrics-server
  225  kubectl -n kube-system get pods
  226  kubectl top pods
  227  history
  228  kubectl -n kube-system get pods
  229  kubectl top pod
  230  cd /etc/kubernetes/manifests/
  231  ls
  232  vim etcd.yaml
  233  sudo vim etcd.yaml
  234  cd
  235  sudo apt install etcd-client
  236  sudo reboot
  237  kubectl get all
  238  sudo etcdctl --help
  239  sudo ETCDCTL_API=3 etcdctl --help
  240  sudo ETCDCTL_API=3 etcdctl snapshot save --help
  241  sudo ls -l /etc/kubernetes/pki/etcd/
  242  ps aux | grep etcd
  243  sudo ETCDCTL_API=3 etcdctl --endpoints=localhost:2379 --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key get / --prefix --keys-only
  244  sudo ETCDCTL_API=3 etcdctl --endpoints=localhost:2379 --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key get snapshot save /tmp/etcdbackup.db
  245  sudo ETCDCTL_API=e etcdctl --write-out=table snapshot status /tmp/etcdbackup.db
  246  sudo ETCDCTL_API=3 etcdctl --write-out=table snapshot status /tmp/etcdbackup.db
  247  ls -l /tmp/
  248  sudo ETCDCTL_API=3 etcdctl --endpoints=localhost:2379 --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key snapshot save /tmp/etcdbackup.db
  249  sudo ETCDCTL_API=3 etcdctl --write-out=table snapshot status /tmp/etcdbackup.db
  250  cp /tmp/etcdbackup.db /tmp/etcdbackup.db.2
  251  cp /tmp/etcdbackup.db /tmp/etcdbackup.db.3
  252  history
  253  kubectl get deploy
  254  kubectl delete --all deploy
  255  cd /etc/kubernetes/manifests/
  256  ls
  257  sudo mv * ..
  258  sudo crictl ps
  259  sudo ETCDCTL_API=3 etcdctl snapshot restore /tmp/etcdbackup.db --data-dir /var/lib/etcd-backup
  260  ls -l /var/lib/etcd-backup/
  261  sudp ls -l /var/lib/etcd-backup/
  262  sudo ls -l /var/lib/etcd-backup/
  263  sudo vi /etc/kubernetes/etcd.yaml
  264  sudo mv ../*.yaml .
  265  sudo crictl ps
  266  kubectl get deploy
  267  history
  268  cd
  269  cd cka/
  270  ./counter.sh 22
  271  kubectl --version
  272  kubectl version
  273  ./counter.sh 12
  274  vim je.yaml
  275  kubectl taint nodes worker1 nosched=true:NoSchedule
  276  kubectl get nodes
  277  kubectl create deploy tt image=nginx --replicas=3
  278  kubectl create deploy tt --image=nginx --replicas=3
  279  kubectl get pods --selector app=tt
  280  kubectl get pods --selector app=tt -o wide
  281  kubect get nodes
  282  kubectl get nodes
  283  kubectl get nodes -o wide
  284  kubectl edit node worker1
  285  vim je.yaml
  286  kubectl apply -f je.yaml
  287  kubectl get pod nginxtaint -o wide
  288  kubectl edit node worker1
  289  kubectl get nodes
  290  kubectl describe node worker2
  291  kubectl describe node worker2 | less
  292  kubect get nodes
  293  kubectl get nodes
  294  kubectl label nodes worker2 disktype=ssd
  295  vim selector-pod.yaml
  296  kubectl apply -f selector-pod.yaml
  297  kubectl get pods nginx -o wide
  298  vim selector-pod.yaml
  299  kubectl apply -f selector-pod.yaml
  300  kubectl get pods nginxxxx
  301  source <(kubectl completion bash)
  302  kubectl describe pod nginxxxx
  303  kubectl label nodes worker1 disktype=xxd
  304  kubectl get pods nginxxxx -w
  305  ./counter.sh 5
  306  kubectl get pods
  307  kubectl get pods -o wide
  308  history