rasp3.1

#to enable dhcp
   11  vi /etc/dhcpcd.conf 
  #line..47,48
   12  sudo reboot
#to get the latest Buster
   15  sudo apt-get update
   48  sudo apt-get full-upgrade
   50  sudo apt-get dist-update
   51  sudo apt-get dist-upgrade
#to change keyboard gb to us
   52  sudo vi /etc/default/keyboard
   53  reboot
#to install iptables
   57  sudo apt install iptables-persistent -y
   58  journactl -xe -u docker
   59  sudo apt purge docker docker-ce docker-engine docker.io containerd runc
   60  sudo systemctl list-jobs
   61  /var/lib/containerd/
   63  ls /var/lib/containerd/
   64  sudo ls /var/lib/containerd/
   65  sudo apt install iptables-persistent -y
   66  sudo iptables -F
   69  sudo apt-get update
   71  apt list --upgradable
   72  sudo apt list --upgradable
   73  lsblk
   78  sudo apt-get dist-upgrade
   81  sudo apt-get dist-upgrade --allow-releaseinfo-change update
   82  sudo apt-get full-upgrade --allow-releaseinfo-change update
   83  sudo apt-get --allow-releaseinfo-change update full-upgrade
   84  sudo apt-get --allow-releaseinfo-change update
   85  sudo apt dist-upgrade -y
   86  sudo apt update
   87  sudo rpi-update
   88  sudo vi /etc/apt/sources.list
   89  sudo apt dist-upgrade -y
   90  vi /etc/apt/sources.list.d/raspi.list 
   91  sudo vi /etc/apt/sources.list.d/raspi.list 
   92  sudo apt update
   93  sudo apt update --allow-releaseinfo-change
   94  sudo vi /etc/apt/sources.list.d/raspi.list 
   95  sudo vi /etc/apt/sources.list
   96  sudo apt update --allow-releaseinfo-change
   97  sudo apt update -y
#to install k3s 
  124  sudo curl -sfL https://get.k3s.io | K3S_KUBECONFIG_MODE=”644” sh -
  125  sudo kubectl get nodes
  126  reboot
  127  sudo reboot
  128  sudo su -
  129  sudo iptables -F
  130  sudo kubectl get nodes
  131  env | grep -i kube
  132  systemctl status docker
  133  netstat -pnlt | grep 6443
  134  sudo netstat -pnlt | grep 6443
  135  sudo firewall-cmd --list-all
  136  cd /var/log/journal
  137  id -u www-data
  138  sudo mkdir -p /var/lib/{pihole,wireguard}
  139  $ sudo kubectl get nodes
  140  sudo kubectl version

  142  strace -eopenat kubectl version
  
  144  sudo kubectl get nodes
  146  sudo netstat -pnlt | grep 6443
#change fw rule
  148  sudo iptables -A INPUT -p tcp --dport 6443 -j ACCEPT
  149  vi /etc/fstab 
 
  
 #to install docker
  162  sudo apt purge docker.io
  163  sudo apt autoremove
  164  sudo apt install docker.io
 
  168  sudo docker pull portainer/portainer-ce:linux-arm
  169  sudo docker run -d -p 9000:9000 --name=portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce:linux-arm
  170  netstat -tulpn
  #to fix k3s on pi error - cgroup_memory=1 cgroup_enable=memory #2067 
  175  cat /boot/cmdline.txt 
 console=serial0,115200 console=tty1 root=PARTUUID=6c586e13-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait cgroup_enable=cpuset cgroup_enable=memory cgroup_memory=1
 
  177  set -o vi
  178  sudo kubectl get nodes
  179  sudo cat /var/lib/rancher/k3s/server/node-token
  180  kubectl get svc -n kube-system
  181  sudo kubectl get svc -n kube-system

#to fix iptables
    3  swapoff -a
#to enable journalctl
    7  vi  /etc/systemd/journald.conf 
    8  sudo mkdir -p /var/log/journal
    9  journalctl --list-boots
   10  id -u www-data
   
   11  kubectl version
   12  kubectl cluster-info
root@raspberrypi:~# kubectl cluster-info 
Kubernetes control plane is running at https://127.0.0.1:6443
CoreDNS is running at https://127.0.0.1:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
Metrics-server is running at https://127.0.0.1:6443/api/v1/namespaces/kube-system/services/https:metrics-server:/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.   
   
   13  vi /etc/ssh/sshd_config
   14  kubectl get nodes
#to run docker as pi
   38  sudo usermod -aG docker pi
   39  cat /etc/group