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april-2024-history.txt
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april-2024-history.txt
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1 ip a
2 sudo apt install git vim -y
3 git clone https://github.com/sandervanvugt/cka
4 cd cka
5 ls *sh
6 ./setup-container.sh
7 ls
8 ls *sh
9 ./setup-kubetools-previousversion.sh
10 sudo apt install jq -y
11 history
12 sudo kubeadm init
13 history
14 mkdir ~/.kube
15 sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
16 sudo chown $(id -u):$(id -g) $HOME/.kube/config
17 kubectl get all
18 #kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
19 kubectl get pods -n kube-system
20 kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
21 kubectl get pods -n kube-system
22 kubectl get ds -n kube-system
23 kubectl get nodes
24 history
25 kubectl create testapp --image=nginx --replicas=3
26 kubectl create deploy testapp --image=nginx --replicas=3
27 kubectl get all -o wide
28 history
29 cd ..
30 ls
31 tar xvf helm-v3.14.4-linux-amd64.tar.gz
32 sudo mv linux-amd64/helm /usr/local/bin
33 helm upgrade --install ingress-nginx ingress-nginx --repo https://kubernetes.github.io/ingress-nginx --namespace ingress-nginx --create-namespace
34 source <(kubectl completion bash)
35 kubectl get pods -n ingress-nginx
36 kubectl create deploy nginxsvc --image=nginx --replicas=3
37 kubectl get all --selector app=nginxsvc
38 kubectl expose deploy nginxsvc
39 kubectl expose deploy nginxsvc --port=80
40 kubectl get all --selector app=nginxsvc
41 kubectl describe svc nginxsvc
42 kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info/*=nginxsvc:80
43 kubectl describe ing nginxsvc
44 sudo vim /etc/hosts
45 kubectl port-forward -n ingress-nginx svc/ingress-nginx-controller 8080:80
46 bg
47 curl nginxsvc.info
48 curl nginxsvc.info:8080
49 history
50 curl nginxsvc.info:8080
51 kubectl edit svc nginxsvc
52 curl nginxsvc.info:8080
53 kubectl describe ing nginxsvc
54 kubectl describe svc nginxsvc
55 kubectl edit svc nginxsvc
56 curl nginxsvc.info:8080
57 history
58 kubectl create ns limited
59 kubectl create quota -h | less
60 kubectl create quota qtest --hard pods=3,cpu=100m,memory=500Mi --namespace=limited
61 kubectl describe quota -n limited
62 kubectl describe ns limited
63 kubectl create deploy nginx --image=nginx --replicas=3 -n limited
64 kubectl get all -n limited
65 kubectl describe -n limited rs nginx-7854ff8877
66 kubectl describe ns limited
67 kubectl set resources -h | less
68 kubectl set -n limited resources deploy nginx --requests cpu=100m,memory=5Mi --limits cpu=200m,memory=20Mi
69 kubectl get all -n limited
70 kubectl describe ns limited
71 kubectl edit quota -n limited qtest
72 kubectl describe ns limited
73 kubectl scale -n limited deployment nginx --replicas=2
74 kubectl scale -n limited deployment nginx --replicas=3
75 kubectl describe ns limited
76 history
77 kubectl edit node control
78 kubectl cordon worker1
79 kubectl edit node worker1
80 kubectl get nodes
81 kubectl uncordon worker1
82 kubectl get pods -n kube-system
83 kubectl drain node worker1
84 kubectl drain worker1
85 kubectl get nodes
86 kubectl edit node worker1
87 kubectl get nodes
88 kubectl get pods -o wide
89 kubectl drain worker1
90 kubectl get nodes
91 kubectl drain worker1 --ignore-daemonsets
92 kubectl edit node worker1
93 kubectl get pods -o wide
94 kubectl get nodes
95 kubectl create deploy ready --image=nginx --replicas=3
96 kubectl get pods -o wide --selector app=ready
97 kubectl get nodes
98 kubectl scale deploy ready --replicas=0
99 kubectl scale deploy ready --replicas=3
100 kubectl get pods -o wide --selector app=ready
101 cd cka/
102 vim networkpolicy-example.yaml
103 git pull
104 vim nwpolicy-complete-example.yaml
105 kubectl apply -f nwpolicy-complete-example.yaml
106 kubectl expose pod nginx --port=80
107 kubectl exec -it busybox -- wget --spider --timeout=1 nginx
108 kubectl label pod busybox access=true
109 kubectl exec -it busybox -- wget --spider --timeout=1 nginx
110 kubectl create ns nwp-namespace
111 vim nwp-lab9-1.yaml
112 kubectl apply -f nwp-lab9-1.yaml
113 kubectl expose pod nwp-nginx --port=80
114 kubectl exec -n nwp-namespace nwp-busybox -- wget --spider --timeout=1 nwp-nginx
115 kubectl exec -n nwp-namespace nwp-busybox -- nslookup nwp-nginx
116 kubectl exec -n nwp-namespace nwp-busybox -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local
117 vim nwp-lab9-2.yaml
118 kubectl apply -f nwp-lab9-2.yaml
119 kubectl exec -n nwp-namespace nwp-busybox -- wget --spider --timeout=1 nwp-nginx.default.svc.cluster.local
120 kubectl create deploy busybox --image=busybox -- sleep 3600
121 kubectl exec -it busybox-6fc6c44c5b-x5vrx -- wget --spider --timeput=1 nwp-nginx
122 kubectl exec -it busybox-6fc6c44c5b-x5vrx -- wget --spider --timeout=1 nwp-nginx
123 kubectl delete -f nwp-lab9-2.yaml
124 history
125 kubectl top
126 kubectl top pod
127 cd
128 git clone https://github.com/kubernetes-sigs/metrics-server.git
129 cd metrics-server/
130 ls
131 kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
132 kubectl -n kube-system get pods
133 kubectl logs -n kube-system metrics-server-6d94bc8694-76vzc
134 kubectl -n kube-system get deploy
135 kubectl -n kube-system edit deployments.apps metrics-server
136 kubectl get pods -n kube-system
137 kubectl top pods
138 cd /etc/kubernetes/manifests/
139 ls
140 cd
141 cd -
142 less kube-scheduler.yaml
143 sudo less kube-scheduler.yaml
144 cd
145 kubectl run auto-web --image=nginx --dry-run=client -o yaml > auto-web.yaml
146 cat auto-web.yaml
147 kubectl get pods
148 cd /etc/kubernetes/manifests/
149 ls -l
150 sudo apt install etcd-client
151 sudo etcdctl --help
152 sudo ETCDCTL_API=3 etcdctl --help
153 ps aux | grep etcd
154 cd ../pki/
155 ls
156 cd etcd/
157 ls
158 cd
159 sudo 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
160 sudo 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/etcdbackup.db
161 ls -l /tmp/etcdbackup.db
162 sudo 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/etcdbackup-$(date +%d-%m-%y).db
163 cd /etc/kubernetes/manifests/
164 ls
165 sudo vim etcd.yaml
166 cd
167 history
168 sudo ETCDCTL_API=3 etcdctl --write-out=table snapshot status /tmp/etcdbackup.db
169 cp /tmp/etcdbackup.db /tmp/etcdbackup.db.2
170 kubectl get deploy
171 kubectl delete deploy --all
172 cd /etc/kubernetes/manifests/
173 ls
174 ls ..
175 sudo mv * ..
176 ls
177 sudo crictl ps
178 sudo mkdir /var/lib/etcd-backup
179 sudo ETCDCTL_API=3 etcdctl snapshot restore /tmp/etcdbackup.db --data-dir /var/lib/etcd-backup
180 sudo rmdir /var/lib/etcd-backup/
181 sudo ETCDCTL_API=3 etcdctl snapshot restore /tmp/etcdbackup.db --data-dir /var/lib/etcd-backup
182 sudo ls -l /var/lib/etcd-backup/
183 sudo ls -l /var/lib/etcd-backup/member
184 sudo ls -l /var/lib/etcd/member
185 sudo vim /etc/kubernetes/etcd.yaml
186 sudo mv ../*.yaml .
187 ls
188 sudo crictl ps
189 kubectl get deploy -A
190 sudo mv ../*.yaml .
191 sudo mv *.yaml ..
192 ls
193 vim ../etcd.yaml
194 sudo vim ../etcd.yaml
195 sudo mv /var/lib/etcd /var/lib/etcd.old
196 sudo mv /var/lib/etcd-backup /var/lib/etcd
197 sudo vim ../etcd.yaml
198 mv ../*.yaml .
199 sudo mv ../*.yaml .
200 sudo crictl ps
201 kubectl get deploty
202 kubectl get deploy
203 cd
204 history
205 sudo apt update
206 sudo apt-cache madison kubeadm
207 kubeadm version
208 sudo apt update
209 sudo apt-cache madison kubeadm
210 sudo apt-mark unhold kubeadm
211 udo apt-get update && sudo apt-get install -y kubeadm='1.29.3-*'
212 sudo apt-get update && sudo apt-get install -y kubeadm='1.29.3-*'
213 pager /etc/apt/sources.list.d/kubernetes.list
214 vim /etc/apt/sources.list.d/kubernetes.list
215 sudo vim /etc/apt/sources.list.d/kubernetes.list
216 history
217 sudo apt update
218 sudo apt-cache madison kubeadm
219 sudo apt-get update && sudo apt-get install -y kubeadm='1.29.3-1'
220 sudo apt-get update && sudo apt-get install -y kubeadm='1.29.3-1.1'
221 sudo apt-mark hold kubeadm
222 kubeadm version
223 sudo kubeadm upgrade plan
224 sudo kubeadm upgrade apply v1.29.3
225 sudo apt-mark unhold kubelet kubectl
226 sudo apt-get update && sudo apt-get install -y kubelet='1.29.3-1.1' kubectl='1.29.3-1.1'
227 sudo apt-mark hold kubelet kubectl
228 sudo systemctl daemon-reload
229 sudo systemctl restart kubelet
230 kubectl get nodes
231 kubectl get pods
232 history
233 kubectl edit node control
234 kubectl get pods -A -o wide
235 kubectl explain pod.spec.nodeSelector
236 cd cka/
237 vim selector-pod.yaml
238 kubectl apply -f selector-pod.yaml
239 kubectl delete pods --all
240 kubectl apply -f selector-pod.yaml
241 kubectl get pods
242 kubectl describe pods nginx
243 kubectl label nodes worker2 disktype=ssd
244 kubectl get pods
245 kubectl taint nodes worker1 example-key=value1:NoSchedule
246 kubectl describe nodes worker1
247 kubectl cordon worker2
248 kubectl create deploy nginx-taint --image=nginx
249 kubectl scale deploy nginx-taint --replicas=3
250 kubectl get pods -o wide
251 vim taint-toleration.yaml
252 kubectl apply -f taint-toleration.yaml
253 kubectl get pods
254 kubectl get pods -o wide
255 kubectl edit node worker1
256 kubectl edit node worker2
257 kubectl get nodes
258 kubectl get pods -o wide
259 vim pod-with-node-affinity.yaml
260 vim pod-with-node-anti-affinity.yaml
261 vim pod-with-node-antiaffinity.yaml
262 vim pod-with-pod-affinity.yaml
263 history
264 kubectl create role -h | less
265 #kubectl create role pod-reader --verb=get --verb=list --verb=watch --resource=pods
266 kubectl create ns roles
267 kubectl create role viewers --verb=get --verb=list --verb=watch --resource=pods -n roles
268 kubectl run viewpod --image=nginx --dry-run=client -o yaml > viewpod.yaml
269 kubectl create sa viewers
270 kubectl explain pod.spec.serviceaccount
271 kubectl explain pod.spec.serviceAccount
272 vim viewpod.yaml
273 kubectl get sa -n roles
274 kubectl create sa viewers -n roles
275 kubectl get sa -n roles
276 vim viewpod.yaml
277 kubectl explain pod.metadata
278 vim viewpod.yaml
279 kubectl get roles -n roles
280 kubectl create rolebinding -h | less
281 #kubectl create rolebinding admin-binding --role=admin --serviceaccount=monitoring:sa-dev
282 kubectl -n roles create rolebinding viewers --role=viewers --serviceaccount=roles:viewers
283 kubectl get roles,rolebindings,sa -n roles
284 history
285 kubectl api-resources | less
286 kubectl get roles,rolebindings,sa -n roles
287 kubectl get pods -n kube-system
288 kubectl get -n kube-system pod metrics-server-67fc4df55-9ddb8 -o yaml | grep -i serviceacc
289 kubectl config view
290 history