CKA day2 june22

student@control:~/cka$ history
    1  sudo -i
    2  ls -l .kube/config
    3  kubectl get all
    4  kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
    5  kubectl get ns
    6  kubectl get all -n kube-system
    7  kubectl get nodes
    8  kubectl create deploy testginx --image=nginx --replicas=3
    9  kubectl get pods -o wide
   10  sudo -i
   11  history
   12  kubectl get pods -n kube-system
   13  kubectl describe etcd-control
   14  kubectl describe etcd-control -n kube-system
   15  kubectl -n kube-system describe deploy
   16  cd cka
   17  git clone https://github.com/sandervanvugt/cka
   18  cd cka/
   19  vim kubeadm-config.yaml
   20  kubectl version
   21  vim kubeadm-config.yaml
   22  source <(kubectl completion bash)
   23  kubectl create ns mynamespace
   24  kubectl run mypod --image=alpine -n mynamespace -- sleep 3600
   25  kubectl get pods -n mynamespace
   26  kubectl get pods -n mynamespace -o yaml
   27  sudo -i
   28  kubectl get pods -n kube-system
   29  kubectl get pods -n kube-system -o wide
   30  kubectl get nodes
   31  kubectl get all -n kube-system
   32  kubectl describe daemonsets.apps calico-node
   33  kubectl describe daemonsets.apps calico-node -n kube-system
   34  kubectl get pods -n kube-system
   35  kubectl describe -n kube-system pod calico-node-8kxht
   36  kubectl logs -n kube-system calico-node-m4mj5
   37  history
   38  ./counter.sh 12
   39  ./counter.sh 5
   40  vim multi.yaml
   41  kubectl create -f multi.yaml
   42  kubectl get pods
   43  kubectl describe pods three-containers
   44  kubectl delete -f multi.yaml
   45  vim multi.yaml
   46  kubectl create -f multi.yaml
   47  kubectl get pods
   48  cat multi.yaml
   49  vim wg.yaml
   50  kubectl create -f wg.yaml
   51  kubectl get pods
   52  cat wg.yaml
   53  ./counter.sh 18
   54  kubectl create quota -h | less
   55  kubectl set resources -h | less
   56  ./counter.sh 7
   57  cd
   58  kubectl create ns restricted
   59  kubectl get ns
   60  kubectl create quota qtest --hard pods=3,cpu=100m,memory=500Mi -n restricted
   61  kubectl describe quota -n restricted
   62  kubectl create deploy rginx --image=nginx --replicas=3 -n restricted
   63  kubectl describe quota -n restricted
   64  kubectl get all -n restricted
   65  kubectl describe deployments.apps rginx -n restricted
   66  kubectl describe deployments.apps rginx-95d54596d -n restricted
   67  kubectl describe -n restricted replicasets.apps rginx-95d54596d
   68  kubectl set resources deploy rginx --requests cpu=100m,memory=5Mi --limits cpu=200m,memory=20Mi -n restricted
   69  kubectl get all -n restricted
   70  kubectl describe -n restricted quota
   71  kubectl -n restricted edit quota
   72  kubectl describe -n restricted quota
   73  kubectl edit deployments.apps -n restricted rginx
   74  kubectl describe -n restricted quota
   75  kubectl run -n restricted busybox -- sleep 3600
   76  kubectl run bbox -n restricted --image=busybox -- sleep 3600
   77  kubectl run -h
   78  kubectl -n restricted get pods -o yaml
   79  kubectl run bbox -n restricted --image=busybox --dry-run=client -o yaml -- sleep 3600 > bbox.yaml
   80  vim bbox.yaml
   81  kubectl create -f bbox.yaml
   82  vim bbox.yaml
   83  kubectl explain pod.spec --recursive | less
   84  kubectl explain pod.spec | less
   85  vim bbox.yaml
   86  kubectl create -f bbox.yaml
   87  history
   88  cka/counter.sh 8
   89  cka/counter.sh 12
   90  vim rs.yaml
   91  kubectl api-resources | less
   92  vim rs.yaml
   93  kubectl create -f rs.yaml
   94  kubectl get pvc,pv
   95  cd cka/
   96  vim nwpolicy-complete-example.yaml
   97  kubectl create -f nwpolicy-complete-example.yaml
   98  kubectl get all
   99  kubectl get nwp
  100  kubectl get networkpolicy
  101  kubectl expose pod nginx --port=80
  102  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  103  kubectl get pods --show-labels
  104  kubectl get networkpolicy -o yaml
  105  kubectl label pod busybox access=true
  106  kubectl exec -it busybox -- wget --spider --timeout=1 nginx
  107  rm ~/.kube/config
  108  kubectl get all
  109  ls ~/.kube/
  110  sudo cp -i /etc/kubernetes/admin.conf ~/.kube/config
  111  ls -l ~/.kube
  112  kubectl get all
  113  sudo chown student:student ~/.kube/config
  114  kubectl get all
  115  kubectl get pods -n kube-system
  116  ps aux | grep apiserver
  117  kubectl config view
  118  less ~/.kube/config
  119  history
  120  sudo -i
  121  exit
  122  vim wg.yaml
  123  kubectl create -f wg.yaml
  124  kubectl get svc
  125  kubectl get pods -n nwp-namespace
  126  kubectl exec -it nwp-busybox -n nwp-namespace -- curl 10.98.168.234
  127  kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 10.98.168.234
  128  kubectl get pods
  129  kubectl exec -it busybox -- wget --spider --timeout=1 10.98.168.234
  130  kubectl exec -it busybox -- wget --spider --timeout=1 10.96.137.90
  131  cp wg.yaml wgnwp.yaml
  132  vim wgnwp.yaml
  133  kubectl get networkpolicy
  134  kubectl delete -f wgnwp.yaml
  135  kubectl exec -it busybox -- wget --spider --timeout=1 10.96.137.90
  136  kubectl exec -it busybox -- wget --spider --timeout=1 10.98.168.234
  137  cd cka/
  138  vim nwp-lab11-1.yaml
  139  vim nwp-lab11-2.yaml
  140  vim ../wgnwp.yaml
  141  vim nwp-lab11-2.yaml
  142  vim ../wgnwp.yaml
  143  kubectl create -f nwp-lab11-2.yaml
  144  kubectl get networkpolicy
  145  kubectl create -f nwp-lab11-2.yaml
  146  kubectl exec -it busybox -- wget --spider --timeout=1 10.98.168.234
  147  kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 10.98.168.234
  148  kubectl get svc
  149  curl 10.96.137.90
  150  source <(kubectl completion bash)
  151  kubectl describe svc nginx
  152  kubectl delete networkpolicy access-nginx
  153  kubectl delete networkpolicies deny-from-other-namespaces
  154  curl 10.96.137.90
  155  kubectl get svc
  156  kubectl edit svc nginx
  157  kubectl get svc
  158  kubectl edit svc nginx
  159  kubectl get svc
  160  kubectl get networkpolicy
  161  kubectl get networkpolicy -A
  162  kubectl get networkpolicies -A
  163  ip a | less
  164  kubectl get svc,pods --show-labels
  165  kubectl describe svc nginx
  166  kubectl edit svc nginx
  167  kubectl describe svc nginx
  168  history
  169  ./counter.sh 5
  170  kubectl -h | less
  171  kubectl drain -h | less
  172  kubectl cordon -h | less
  173  kubectl drain worker2
  174*
  175  kubectl get nodes
  176  kubectl get pods -A -o wide
  177  kubectl uncordon worker2
  178  kubectl get nodes
  179  kubectl -h | less
  180  kubectl get pods -o wide
  181  kubectl get deploy
  182  kubectl scale deployment testginx --replicas=4
  183  kubectl get pods -o wide
  184  ./counter.sh 20
  185  kubectl top pods
  186  kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
  187  kubectl top pods
  188  kubectl get pods -n kube-system
  189  kubectl describe -n kube-system pod metrics-server-678f4bf65b-htllm
  190  kubectl logs -n kube-system metrics-server-678f4bf65b-htllm
  191  kubectl -n kube-system edit deployments.apps metrics-server
  192  kubectl get pods -n kube-system
  193  kubectl -n kube-system edit deployments.apps metrics-server
  194  kubectl get pods -n kube-system
  195  kubectl top pods
  196  kubectl top pods --sort-by=cpu
  197  ./counter.sh 5
  198  kubectl taint -h | less
  199  kubectl edit node control
  200  kubectl create ttest --image=nginx --replicas=3
  201  kubectl create deploy ttest --image=nginx --replicas=3
  202  kubectl get pods -o wide
  203  kubectl run nametest --image=nginx --dry-run=client -o yaml > nametest.yaml
  204  kubectl explain pod.spec | less
  205  vim nametest.yaml
  206  kubectl create -f nametest.yaml
  207  kubectl get pods
  208  kubectl describe pod nametest
  209  kubectl get poids
  210  kubectl get pods
  211  kubectl create -f nametest.yaml
  212  kubectl describe pod nametest
  213  kubectl label nodes worker2 disktype=ssd
  214  vim selector-pod.yaml
  215  kubectl create -f selector-pod.yaml
  216  kubectl get pods -o wide
  217  kubectl taint nodes worker1 example-key=value1:NoSchedule
  218  kubectl describe nodes worker1
  219  kubectl create deploy nginx-taint --image=nginx
  220  kubectl scale deployment nginx-taint --replicas=3
  221  kubectl get pods -o wide
  222  vim taint-toleration.yaml
  223  kubectl create -f taint-toleration.yaml
  224  kubectl get pods -o wide | grep tolera
  225  vim counter.sh
  226  ./counter.sh 20
  227  vim rs.yaml
  228  kubectl get nodes --show-labels
  229  kubectl create -f rs.yaml
  230  vim rs.yaml
  231  kubectl create -f rs.yaml
  232  kubectl get pods -o wide | grep rsn
  233  kubectl get nodes
  234  grep -i nodename *
  235  vim nametest.yaml
  236  kubectl create -f nametest.yaml
  237  kubectl get pods nametest2
  238  kubectl describe pod nametest2
  239  kubectl get pods nametest2 -o yaml | less
  240  kubectl get nodes
  241  kubectl describe node worker1 | less
  242  vim counter.sh
  243  ./counter.sh 5
  244  kubectl get ds -A
  245  kubectl create deploy dsginx --image=nginx --dry-run=client -o yaml > dsginx.yaml
  246  vim dsginx.yaml
  247  kubectl create -f dsginx.yaml
  248  vim dsginx.yaml
  249  kubectl create -f dsginx.yaml
  250  kubectl get ds
  251  kubectl get all --selector app=dsginx
  252  kubectl get pods --selector app=dsginx -o wide
  253  kubectl get nodes
  254  kubectl edit node worker1
  255  kubectl get pods --selector app=dsginx -o wide
  256  kubectl create deploy upgrademe --image=nginx:1.14 --replicas=3
  257  kubectl get all --selector app=upgrademe
  258  kubectl get deployments.apps upgrademe -o yaml | less
  259  kubectl get all --selector app=upgrademe
  260  kubectl set image --help | less
  261  #kubectl set image deployment/nginx busybox=busybox nginx=nginx:1.9.1
  262  kubectl set image deployment/upgrademe nginx=nginx:latest
  263  kubectl get all --selector app=upgrademe
  264  kubectl rollout history deployment upgrademe
  265  kubectl rollout undo deployment upgrademe
  266  kubectl get all --selector app=upgrademe
  267  vim counter.sh
  268  ./counter.sh 26
  269  sudo -i
  270  ls -lrt
  271  cat nametest.yaml
  272  kubectl get pods
  273  vim counter.sh
  274  ./counter.sh 8
  275  sudo ETCDCTL_API=3 etcdctl snapshot save snapshot.db --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key
  276  sudo apt install etcd-client
  277  sudo ETCDCTL_API=3 etcdctl snapshot save snapshot.db --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key
  278  ls -l snapshot.db
  279  sudo ETCDCTL_API=3 etcdctl snapshot save snapshot2.db --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key --endpoints=https://127.0.0.1:2379
  280  ls -l snap*
  281  ps aux | grep apiserver
  282  cd /etc/kubernetes/pki/etcd/
  283  ls
  284  sudo ETCDCTL_API=3 etcdctl get / --prefix --keys-only --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key --endpoints=https://127.0.0.1:2379
  285  sudo ETCDCTL_API=3 etcdctl get / --prefix --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key --endpoints=https://127.0.0.1:2379
  286  cd
  287  cd cka/
  288  vim counter.sh
  289  ./counter.sh 10
  290  sudo useradd -m -s /bin/bash -G sudo anna
  291  sudo passwd anna
  292  su - anna
  293  vim podaccessrole.yaml
  294  kubectl create -f podaccessrole.yaml
  295  vim rolebinding.yaml
  296  kubectl create -f rolebinding.yaml
  297  kubectl run rolepod --image=nginx
  298  kubectl get pods
  299  su - anna
  300  history