kube3weeks april22 day1

### CONTROL
student@control:~/cka$ history
    1  sudo vim /etc/hosts
    2  cat /etc/hosts
    3  cat /etc/os-release
    4  free -m
    5  lscpu
    6  lsblk
    7  sudo nano /etc/fstab
    8  sudo swapoff -a
    9  free
   10  git clone https://github.com/sandervanvugt/cka
   11  cd cka
   12  history
   13  ls
   14  vim setup-container.sh
   15  ./setup-container.sh
   16  ls
   17  ./setup-kubetools.sh
   18  vim setup-kubetools
   19  vim setup-kubetools.sh
   20  sudo setup-kubetools.sh
   21  sudo ./setup-kubetools.sh
   22  history
   23  sudo -i
   24  mkdir -p $HOME/.kube
   25  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   26  sudo chown $(id -u):$(id -g) $HOME/.kube/config
   27  kubectl get all
   28  kubectl apply -f https://docs.calico.org/manifests/calico.yaml
   29  kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
   30  kubectl get nodes
   31  history
   32  ./counter.sh 15
   33  kubectl get all
   34  source <(kubectl completion bash)
   35  kubectl completion -h | less
   36  kubectl create deployment myfirstapp --image=nginx --replicas=3
   37  kubectl get all
   38  history
   39  kubectl get all
   40  kubectl delete pod myfirstapp-ff65c646c-xshns
   41  kubectl get all
   42  kubectl run lonelypod --image=nginx
   43  kubectl get all
   44  kubectl delete pod lonelypod
   45  kubectl get all
   46  history
   47  less ~/.kube/config
   48  ip a
   49  history

###WORKER1

tudent@worker1:~/cka$ history
    1  sudo vim /etc/hosts
    2  sudo nano /etc/fstab
    3  sudo swapoff -a
    4  git clone https://github.com/sandervanvugt/cka
    5  cd cka
    6  ./setup-container.sh
    7  sudo ./setup-kubetools.sh
    8  history
student@worker1:~/cka$ sudo -i
root@worker1:~# kubeadm join 192.168.29.153:6443 --token r0zybl.zjdawcrzbw2s4z2l \
> --discovery-token-ca-cert-hash sha256:2c26d79254c1a23bfcd6bf1bfd142b8127980e8f13a15b4d83f39fcb48126674
[preflight] Running pre-flight checks
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
W0408 14:01:46.806272   14063 utils.go:69] The recommended value for "resolvConf" in "KubeletConfiguration" is: /run/systemd/resolve/resolv.conf; the provided value is: /run/systemd/resolve/resolv.conf
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Starting the kubelet
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...

This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.

Run 'kubectl get nodes' on the control-plane to see this node join the cluster.

root@worker1:~# history
    1  kubeadm join 192.168.29.153:6443 --token r0zybl.zjdawcrzbw2s4z2l --discovery-token-ca-cert-hash sha256:2c26d79254c1a23bfcd6bf1bfd142b8127980e8f13a15b4d83f39fcb48126674
    2  history
root@worker1:~#

### WORKSTATION

    1  cd cka
    2  git clone https://github.com/sandervanvugt/cka
    3  sudo apt install git
    4  cd cka
    5  git clone https://github.com/sandervanvugt/cka
    6  cka/counter.sh 15
    7  ssh [email protected]
    8  ssh [email protected]
    9  ssh [email protected]
   10  ssh [email protected]
   11  ssh [email protected]
   12  ssh [email protected]
   13  ssh [email protected]
   14  ssh [email protected]
   15  ssh [email protected]
   16  kubectl get all
   17  ssh [email protected]
   18  ssh [email protected]
   19  sudo poweroff
   20  ssh [email protected]
   21  ssh [email protected]
   22  git clone https://github.com/sandervanvugt/cka
   23  cd cka
   24  ls
   25  sudo ./setup-kubetools.sh
   26  kubectl get all
   27  cd
   28  mkdir .kube
   29  scp 192.168.29.153:~.kube/config .kube
   30  scp 192.168.29.153:~/.kube/config .kube
   31  ls -l .kube/
   32  kubectl get all
   33  history
   34  kubectl api-resources | less
   35  kubectl explain pods.spec | less
   36  kubectl explain deployment.spec | less
   37  kubectl api-resources
   38  kubectl explain ippools.spec
   39  history
   40  kubectl get pods
   41  source <(kubectl completion bash)
   42  kubectl get pods myfirstapp-ff65c646c-2pmkn -o yaml | less
   43  kubectl run mynginx --image=nginx --dry-run=client -o yaml > mynginx.yaml
   44  vim mynginx.yaml
   45  sudo apt install vim
   46  vim mynginx.yaml
   47  kubectl explain pods.spec | less
   48  vim mynginx.yaml
   49  kubectl create -f  mynginx.yaml
   50  kubectl get pods
   51  kubectl exec -it mynginx bash
   52  kubectl exec -it mynginx -- sh
   53  kubectl get pods
   54  kubectl delete pod mynginx
   55  kubectl exec -it myfirstapp-ff65c646c-2pmkn -- sh
   56  kubectl get pods
   57  kubectl get pods -A
   58  git clone https://github.com/sandervanvugt/kube3weeks
   59  cd kube3weeks/
   60  vim multicontainer.yaml
   61  kubectl create -f multicontainer.yaml
   62  kubectl get pods
   63  vim initcontainer.yaml
   64  kubectl create -f initcontainer.yaml
   65  kubectl get pods
   66  kubectl create ns secret
   67  kubectl run secret --image=nginx -n secret
   68  kubectl get pods
   69  kubectl get pods -n secret
   70  kubectl get pods -n kube-system
   71  history