Kubernetics

Kubernetics used for docker orchestration

Day 1-2 code: First Command : vagrant@node1:`$ sudo kubeadm init --apiserver-advertise-address 172.19.50.11 --pod-network-cidr 10.244.0.0/24 cmd on worker node: kubeadm join 172.19.50.11:6443 --token 9whwkv.remb2jav79cmav48 --discovery-token-ca-cert-hash sha256:dc64b91335ee24b15b4eaadc432afa36db8298e45c9553bafc17acaae903e6ed #----------below cmd on node1------------- mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config #-------------------------------- kubectl config view sudo kubectl delete sudo kubeadm reset [2.50]kubectl version kubectl api-resources #### Day 2+++++++++++++++++++++ kubectl create -f pod1.yml kubectl get pods kubectl describe pod pod-1 alias k=kubectl k get pods k describe pod pod-1 ------------------------------------------ # to create config map # Advantage for using config map k create cm db-config --from-literal=user=root --from-literal= host=localhost k get cm k decribe cm db-config #------------------------------ k create -f pod_cm_2.yml k get pod k delete pod pod-cm #------------------------------ k create cm db-config --from-literal=user=root --from-literal=host=localhost --------------------------------------- vim db-config.yml k describe cm db-config k exec -it pod-cm -- /bin/sh #----------------------------------- # Update this file with command sudo vim /etc/systemd/system/kubelet.service.d/10-kubeadm.conf sudo kubectl k exec -it pod-cm -- /bin/sh +++++++++++++++++++++++++++++++++++++++++++++++++++++++ secret vim pod_secret.yml k get pod k exec -it pod-secret -- bin/sh # common file: config.yml ------------------------------------------ vim rs.yml k create -f rs.yml k get rs kubectl get pods -------multiple terminal tmux cnt+v enter $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ @Service k get deplyment k get svc k delete svc website.......(name of service) ----------------- vim website-deploy.yml k create -f website-deploy.yml # Till now we are in inside deployment folder ---------------------------------- #nodeport service # now we are inside service folder cd ../service/ vim node_port.yml k create -f node_port.yml k get svc ---------------------------------- #now check on browser 192.168.1.110:31012 This is very nice website # this shld be shown on browser ------------------------------------------------------