1 git clone https://github.com/sandervanvugt/cka 2 cd cka 3 ls 4 ./setup-container.sh 5 ls 6 ./setup-kubetools.sh 7 history 8 sudo kubeadm init 9 cd 10 mkdir -p $HOME/.kube 11 kubectl get all 12 kubectl get pods -n kube-system 13 source <(kubectl completion bash) 14 kubectl describe -n kube-system pod coredns-7c65d6cfc9-z5rsc 15 kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml 16 kubectl get pods -n kube-system 17 history 18 kubectl get nodes 19 kubectl describe node control 20 history 21 cd cka/ 22 ./counter.sh 12 23 kubectl get nodes 24 sudo apt install helm 25 helm 26 cd .. 27 ls 28 tar xvf helm-v3.16.2-linux-arm64.tar.gz 29 sudo cp linux-arm64/helm /usr/local/bin 30 helm upgrade --install ingress-nginx ingress-nginx --repo https://kubernetes.github.io/ingress-nginx --namespace ingress-nginx --create-namespace 31 kubectl get all -n ingress-nginx 32 history 33 kubectl create deploy nginxsvc --image=nginx --port=80 34 kubectl expose deploy nginxsvc 35 kubectl get all --selector app=nginxsvc 36 kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info/*=nginxsvc:80 37 kubectl port-forward -n ingress-nginx svc/ingress-nginx-controller 8080:80 38 bg 39 sudo sh -c 'echo "127.0.0.1 nginxsvc.info" >> /etc/hosts' 40 cat /etc/hosts 41 curl nginxsvc.info:8080 42 kubectl create ing -h | less 43 history 44 kubectl get all -n ingress-nginx 45 kubectl edit -n ingress-nginx svc ingress-nginx-controller 46 kubectl get all -n ingress-nginx 47 cd cka 48 ./counter.sh 1 49 history 50 kubectl edit svc nginxsvc 51 kubectl describe ingress nginxsvc 52 kubectl describe svc nginxsvc 53 kubectl edit svc nginxsvc 54 kubectl describe svc nginxsvc 55 kubectl describe node control | less 56 df -h 57 kubectl create ns limited 58 kubectl create quota qtest --hard pods=3,cpu=100m,memory=500Mi 59 kubectl get pods 60 kubectl scale deploy nginxsvc --replicas=5 61 kubectl get all 62 kubectl delete quota qtest 63 kubectl scale deploy nginxsvc --replicas=5 -n limited 64 kubectl create quota qtest --hard pods=3,cpu=100m,memory=500Mi -n limited 65 kubectl describe quota -n limited 66 kubectl create deploy nginx --image=nginx --replicas=3 -n limited 67 kubectl get all -n limited 68 kubectl describe rs nginxsvc-7f8cdcb4db 69 kubectl get all -n limited 70 kubectl -n limited describe rs nginx-676b6c5bbc 71 history 72 kubectl -n limited set resources deploy nginx --requests cpu=100m,memory=5Mi --limits cpu=200m,memory=20m 73 kubectl -n limited set resources deploy nginx --requests cpu=100m,memory=20Mi --limits cpu=200m,memory=40m 74 kubectl -n limited set resources deploy nginx --requests cpu=100m,memory=20Mi --limits cpu=200m,memory=40Mi 75 kubectl get pods -n limited 76 kubectl get all -n limited 77 kubectl scale -n limited deploy nginx --replicas=4 78 kubectl scale -n limited deploy nginx --replicas=3 79 kubectl get all -n limited 80 kubectl describe -n limited quota qtest 81 kubectl edit quota -n limited qtest 82 kubectl get all -n limited 83 kubectl scale -n limited deploy nginx --replicas=3 84 kubectl get all -n limited 85 kubectl describe -n limited quota qtest 86 kubectl scale -n limited deploy nginx --replicas=2 87 kubectl get all -n limited 88 kubectl scale -n limited deploy nginx --replicas=3 89 kubectl get all -n limited 90 history 91 kubectl create ns limited 92 vim limitrange.yaml 93 kubectl apply -f limitrange.yaml -n limited 94 kubectl describe ns limited 95 kubectl run limitpod --image=nginx -n limited 96 kubectl -n limited delete quota 97 kubectl -n limited delete quota qtest 98 kubectl run limitpod --image=nginx -n limited 99 kubectl describe -n limited pod limitpod 100 history 101 kubectl get pods -A -o wide 102 kubectl get pods -o wide 103 kubectl create deploy testdeploy --image=nginx --replicas=6 104 kubectl get pods -o wide 105 kubectl drain worker2 106 kubectl drain worker2 --ignore-daemonsets --force 107 kubectl get pods 108 kubectl get pods -o wide 109 kubectl get nodes 110 kubectl describe node worker2 111 kubectl edit node worker2 112 kubectl uncordon worker2 113 kubectl get pods -o wide 114 kubectl create newweb --image=nginx --replicas=20 115 kubectl create deploy newweb --image=nginx --replicas=20 116 kubectl get pods -o wide 117 kubectl delete deploy newweb 118 history 119 sudo ls -l /etc/kubernetes/manifests 120 kubectl run staticpod --image=nginx --dry-run=client -o yaml 121 kubectl get pods 122 sudo -i 123 history >> /tmp/history-14Oct24.txt 124 vim /tmp/history-14Oct24.txt 125 kubectl config view 126 kubectl api-resources | grep -i networkp 127 vim nwpolicy-complete-example.yaml 128 kubectl apply -f nwpolicy-complete-example.yaml 129 kubectl expose pod nginx --port=80 130 kubectl get svc 131 kubectl exec -it busybox -- wget --spider --timeout=1 nginx 132 vim nwpolicy-complete-example.yaml 133 kubectl lab pod busybox access=true 134 kubectl label pod busybox access=true 135 kubectl exec -it busybox -- wget --spider --timeout=1 nginx 136 history 137 kubectl create ns new-namespace 138 kubectl create ns nwp-namespace 139 vim nwp-lab9-1.yaml 140 kubectl create -f nwp-lab9-1.yaml 141 kubectl expose pod nwp-nginx --port=80 142 kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx 143 kubectl exec -it nwp-busybox -n nwp-namespace -- nslookup nwp-nginx 144 kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local 145 vim nwp-lab9-2.yaml 146 kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local 147 kubectl apply -f nwp-lab9-2.yaml 148 kubectl exec -it nwp-busybox -n nwp-namespace -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local 149 kubectl create deploy busybox --image=busybox --sleep 3600 150 kubectl create deploy busybox --image=busybox -- sleep 3600 151 kubectl exec -it busybox-75cd85d546-wd6wq -- wget --spider --timeout=1 nwp-nginx 152 kubectl get netpol 153 kubectl delete netpol access-nginx 154 kubectl delete netpol deny-from-other-namespaces 155 history 156 kubectl top pods 157 kubectl top node 158 kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml 159 kubectl -n kube-system get pods 160 kubectl edit -n kube-system deployments.apps metrics-server 161 kubectl -n kube-system get pods 162 kubectl top pods 163 history 164 kubectl get quota 165 kubectl create quota -h | less 166 #kubectl create quota my-quota --hard=cpu=1,memory=1G,pods=2,services=3,replicationcontrollers=2,resourcequotas=1,secrets=5,persistentvolumeclaims=10 167 kubectl create quota one --hard=cpu=1 168 kubectl create quota two --hard=memory=4G 169 kubectl create quota three --hard=cpu=2 170 kubectl describe ns default 171 kubectl delete quota one two three 172 kubectl top -h | less 173 kubectl top pod -h | less 174 kubectl top pod -A --sort-by="memory" 175 history 176 kubectl run testpox --image=nginx --dry-run=client -o yaml 177 kubectl get pods 178 history 179 kubectl get pods 180 sudo apt install etcd-client 181 sudo etcdctl --help 182 sudo ETCDCTL_API=2 etcdctl --help 183 sudo ETCDCTL_API=3 etcdctl --help 184 ps aux | grep 2379 185 sudo etcdctl --endpoints=localhost:2379 --cacert /etc/kubernetes/pki/etcd/ca.rt --cert /etc/kubernetes/pki/etcd/server.crt --key /etc/kubernetes/pki/etcd/server.key get / --prefix --keys-only 186 sudo 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 187 sudo 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 188 ls -l /tmp/etcdbackup.db 189 sudo etcdctl --write-out=table snapshot status /tmp/etcdbackup.db 190 cp /tmp/etcdbackup.db /tmp/etcdbackup.db.2 191 sudo cp /tmp/etcdbackup.db /tmp/etcdbackup.db.2 192 history 193 kubectl get deploy 194 kubectl delete deploy --all 195 kubectl get deploy 196 cd /etc/kubernetes/manifests/ 197 ls 198 sudo mv * .. 199 sudo dnf install tree 200 sudo apt install tree 201 sudo tree /var/lib/etcd 202 sudo mv /var/lib/etcd /var/lib/etcd-backup 203 sudo tree /var/lib/etcd 204 sudo etcdctl snapshot restore /tmp/etcdbackup.db --data-dir /var/lib/etcd 205 sudo tree /var/lib/etcd 206 sudo mv ../*.yaml . 207 sudo crictl ps 208 kubectl get deploy 209 kubectl get pods 210 kubectl delete deploy testdeploy 211 history 212 kubectl get nodes 213* 214 cd 215 vim nodesel.yam;l 216 vim nodesel.yaml 217 kubectl apply -f nodesel.yaml 218 kubectl get pods -o yaml 219 kubectl get pods -o wide 220 vim nodesel.yaml 221 kubectl apply -f nodesel.yaml 222 kubectl get pods 223 kubectl describe pod islectnginxxxxxx 224 kubectl get deploy 225 kubectl get pods 226 kubectl delete pods --force --timeout=0 testdeploy-7cd7d7ddc8-28mcq testdeploy-7cd7d7ddc8-fqh6v testdeploy-7cd7d7ddc8-ftk48 testdeploy-7cd7d7ddc8-pd7sd testdeploy-7cd7d7ddc8-stj67 testdeploy-7cd7d7ddc8-stxsx 227 kubectl get pods 228 history 229 kubectl get node control -o yaml | less 230 kubectl get ds -A 231 kubectl get ds -n kube-system kube-proxy -o yaml | less 232 kubectl get ds -n kube-system calico-node -o yaml | less 233 history 234 kubectl taint nodes worker1 storage=ssd:NoSchedule 235 kubectl describe node worker1 236 kubectl create deploy nginx-taint --image=nginx --replicas=3 237 kubectl get pods -o wide 238 cd cka/ 239 vim taint-toleration.yaml 240 kubectl apply -f taint-toleration.yaml 241 kubectl get pods -o wide | grep tole 242 vim taint-toleration2.yaml 243 kubectl apply -f taint-toleration2.yaml 244 kubectl get pods -o wide | grep hdd 245 vim taint-toleration2.yaml 246 kubectl apply -f taint-toleration2.yaml 247 vim taint-toleration2.yaml 248 kubectl apply -f taint-toleration2.yaml 249 kubectl get pods -o wide | grep exists 250 history 251 vim ~/.kube/config 252 kubectl get sa 253 kubectl get sa -n kube-system 254 kubectl create role -h | less 255 kubectl create rolebinding -h | less 256 kubectl run mypod --image=alpine -- sleep 3600 257 kubectl get pods mypod -o yaml | less 258 kubectl exec -it mypod -- sh 259 historyt 260 history 261 kubectl create sa mysa 262 kubectl create role list-pods --resource=pods --verbs=list 263 kubectl create role list-pods --resource=pods --verb=list 264 kubectl describe role list-pods 265 kubectl create rolebinding list-pods --role=list-pods --serviceaccount=default:default 266 vim mysapod.yaml 267 kubectl apply -f mysapod.yaml 268 kubectl exec -it mysapod -- sh 269 ls *role* 270 grep -li 'type=role' * 271 kubectl get rolebindings 272 kubectl create rolebinding list-pods --role=list-pods --serviceaccount=default:mysa 273 kubectl delete rolebindings.rbac.authorization.k8s.io list-pods 274 kubectl create rolebinding list-pods --role=list-pods --serviceaccount=default:mysa 275 kubectl exec -it mysapod -- sh 276 kubectl get pods 277 kubectl delete pod mysapod 278 kubectl delete pod mysapod --force --timeout=1 279 kubectl delete pod mysapod --force --timeout=0 280 kubectl apply -f mysapod.yaml 281 kubectl exec -it mysapod -- sh 282 history > /tmp/history-15Oct24.txt