nmtui
exit
systemctl disable --now firewalld
ssh worker1
ssh worker2
ssh worker3
vim /etc/fstab
yum install -y git
git clone https://github.com/sandervanvugt/cka
cd cka
ls
vim setup-docker.sh 
./setup-docker.sh 
vim setup-kubetools.sh 
./setup-kubetools.sh 
./counter.sh 10
kubeadm init
ls
vim join-net.sh
su - student
usermod -aG wheel student
su - student
ls
scp join-net worker1:/root
scp join-net.sh worker1:/root
scp join-net.sh worker2:/root
scp join-net.sh worker3:/root
ssh worker1
kubectl get nodes
history
su - student
./counter.sh 20
vim ex1.yaml
kubectl api-resources
exit
vim /etc/hosts
vi /etc/hosts
yum install -y vim; yum update -y
systemctl status firewalld
systemctl disable --now firewalld
ppppppoweroff
poweroff
cd /etc/yum.repos.d/
ls
vim kubernetes.repo 
yum repolist
yum provides */etcdctl
rpm -qa | grep etcd
yum install -y etcd
etcdctl -h
etcdctl backup -h
etcdctl snapshot -h
etcdctl snapshot save -h
etcdctl snapshot save --help
ETCDCTL_API=3 etcdctl snapshot save --help
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
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/snapshot.db
history
ps aux | grep etcd
history
ETCDCTL_API=3 etcdctl -h
cd
history
exit
systemctl status kubelet
exit
cd /etc/kubernetes/manifests/
ls
exit