Kubernetes Commands
Kubernetes Master Node Commands
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1 history
2 ifconfig
3 sudo apt install net-tools
4 ifconfig
5 getmac
6 swapoff -a
7 sudo swapoff -a
8 sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
9 cat $$EOF | sudo tee /etc/modules-load.d/k8s.conf -----> $$ used here is wrong see Page Source commented correct symbol
10 overlay
11 br_netfilter
12 EOF
13 sudo modprobe overlay
14 sudo modprobe br_netfilter
15 # sysctl params required by setup, params persist across reboots
16 cat $$EOF | sudo tee /etc/sysctl.d/k8s.conf -----> $$ used here is wrong see Page Source commented correct symbol
17 net.bridge.bridge-nf-call-iptables = 1
18 net.bridge.bridge-nf-call-ip6tables = 1
19 net.ipv4.ip_forward = 1
20 EOF
21 # Apply sysctl params without reboot
22 sudo sysctl --system
23 # Verify that the br_netfilter, overlay modules are loaded by running the following commands:
24 lsmod | grep br_netfilter
25 lsmod | grep overlay
26 # Verify that the net.bridge.bridge-nf-call-iptables, net.bridge.bridge-nf-call-ip6tables, and net.ipv4.ip_forward system variables are set to 1 in your sysctl config by running the following command:
27 sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
28 curl -LO https://github.com/containerd/containerd/releases/download/v1.7.14/containerd-1.7.14-linux-amd64.tar.gz
29 sudo tar Cxzvf /usr/local containerd-1.7.14-linux-amd64.tar.gz
30 ls -lrt
31 sudo apt install curl
32 curl -LO https://github.com/containerd/containerd/releases/download/v1.7.14/containerd-1.7.14-linux-amd64.tar.gz
33 sudo tar Cxzvf /usr/local containerd-1.7.14-linux-amd64.tar.gz
34 ls -lrt
35 curl -LO https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
36 sudo mkdir -p /usr/local/lib/systemd/system/
37 sudo mv containerd.service /usr/local/lib/systemd/system/
38 sudo mkdir -p /etc/containerd
39 containerd config default | sudo tee /etc/containerd/config.toml
40 sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
41 sudo systemctl daemon-reload
42 sudo systemctl enable --now containerd
43 systemctl status containerd
44 curl -LO https://github.com/opencontainers/runc/releases/download/v1.1.12/runc.amd64
45 sudo install -m 755 runc.amd64 /usr/local/sbin/runc
46 curl -LO https://github.com/containernetworking/plugins/releases/download/v1.5.0/cni-plugins-linux-amd64-v1.5.0.tgz
47 sudo mkdir -p /opt/cni/bin
48 sudo tar Cxzvf /opt/cni/bin cni-plugins-linux-amd64-v1.5.0.tgz
49 sudo apt-get update
50 sudo apt-get install -y apt-transport-https ca-certificates curl gpg
51 curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.29/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
52 echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.29/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
53 sudo apt-get update
54 sudo apt-get install -y kubelet=1.29.6-1.1 kubeadm=1.29.6-1.1 kubectl=1.29.6-1.1 --allow-downgrades --allow-change-held-packages
55 sudo apt-mark hold kubelet kubeadm kubectl
56 kubeadm version
57 kubelet --version
58 kubectl version --client
59 sudo crictl config runtime-endpoint unix:///var/run/containerd/containerd.sock
60 crictl ps
61 crictl ps -a
62 sudo kubeadm init --pod-network-cidr=192.168.0.0/16 --apiserver-advertise-address=192.168.1.17 --node-name master
63 kubectl get pod
64 mkdir -p $HOME/.kube
65 kubectl get pod
66 kubectl get pod -all
67 kubectl get pod -a
68 kubectl get pod -n default
69 kubectl get ns
70 kubectl get pod -n kube-system
71 kubectl get nodes
72 kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/tigera-operator.yaml
73 curl https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/custom-resources.yaml -O
74 kubectl apply -f custom-resources.yaml
75 kubectl get nodes
76 kubectl get pods -A
77 kubectl get nodes
78 history
79 kubectl get nodes
80 ifconfig
81 systemctl status containerd
82 kubectl get nodes
83 systemctl status kubelet
84 kubectl get pods -A
85 sudo systemctl status kubelet --no-pager
86 sudo systemctl restart containerd
87 sudo systemctl restart kubelet
88 sudo journalctl -u kubelet -b --no-pager -n 200
89 sudo swapoff -a
90 sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
91 free -h
92 sudo systemctl restart kubelet
93 sudo systemctl status kubelet
94 kubectl get nodes
95 sudo kubectl run nginx-pod --image=nginx:latest --port=80
96 sudo kubectl get pod
97 sudo systemctl restart containerd
98 sudo systemctl restart kubelet
99 sudo systemctl status kubelet --no-pager
100 sudo journalctl -u kubelet -n 200 --no-pager
101 sudo ss -ltnp | grep 6443 || sudo netstat -ltnp | grep 6443
102 kubectl get pods -A
103 sudo kubectl run nginx-pod --image=nginx:latest --port=80
104 kubectl run nginx-pod --image=nginx:latest --port=80
105 kubectl get pods -O
106 kubectl get pods -A
107 kubectl get pods -O wide
108 kubectl get pods -o wide
109 kubectl expose pod nginx-pod --type=NodePort --port=80 --target-port=80 --name=nginx-service
110 kubectl get pods
111 kubectl get svc -o wide
112 kubectl get pods
113 kubectl get pod
114 cd $HOME/.kube/
115 ls
116 cd config
117 cat config
118 cd .
119 cd ..
120 kubectl create namespace argocd
121 kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
122 kubectl port-forward svc/argocd-server -n argocd 8080:443
123 kubectl get pod -n argocd
124 kubectl port-forward svc/argocd-server -n argocd 8080:443
125 kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath=”{.data.password}” | base64 -d; echo
126 kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d; echo
127 kubectl port-forward svc/argocd-server -n argocd 8080:443
128 history
Kubernetes Worker Node Commands
1 sudo apt-get install open-vm-tools-desktop -y
2 free -h
3 swapoff -a
4 sudo swapoff -a
5 sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
6 free -h
7 cat $$EOF | sudo tee /etc/modules-load.d/k8s.conf -----> $$ used here is wrong see Page Source commented correct symbol
overlay
br_netfilter
EOF
8 sudo modprobe overlay
9 sudo modprobe br_netfilter
10 # sysctl params required by setup, params persist across reboots
11 cat $$EOF | sudo tee /etc/sysctl.d/k8s.conf -----> $$ used here is wrong see Page Source commented correct symbol
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
12 # Apply sysctl params without reboot
13 sudo sysctl --system
14 # Verify that the br_netfilter, overlay modules are loaded by running the following commands:
15 lsmod | grep br_netfilter
16 lsmod | grep overlay
17 # Verify that the net.bridge.bridge-nf-call-iptables, net.bridge.bridge-nf-call-ip6tables, and net.ipv4.ip_forward system variables are set to 1 in your sysctl config by running the following command:
18 sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
19 curl -LO https://github.com/containerd/containerd/releases/download/v1.7.14/containerd-1.7.14-linux-amd64.tar.gz
20 sudo tar Cxzvf /usr/local containerd-1.7.14-linux-amd64.tar.gz
21 curl -LO https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
22 sudo mkdir -p /usr/local/lib/systemd/system/
23 sudo mv containerd.service /usr/local/lib/systemd/system/
24 sudo mkdir -p /etc/containerd
25 containerd config default | sudo tee /etc/containerd/config.toml
26 sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
27 sudo systemctl daemon-reload
28 sudo systemctl enable --now containerd
29 # Check that containerd service is up and running
30 systemctl status containerd
31 sudo apt install curl
32 curl -LO https://github.com/containerd/containerd/releases/download/v1.7.14/containerd-1.7.14-linux-amd64.tar.gz
33 sudo tar Cxzvf /usr/local containerd-1.7.14-linux-amd64.tar.gz
34 curl -LO https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
35 sudo mkdir -p /usr/local/lib/systemd/system/
36 sudo mv containerd.service /usr/local/lib/systemd/system/
37 sudo mkdir -p /etc/containerd
38 containerd config default | sudo tee /etc/containerd/config.toml
39 sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
40 sudo systemctl daemon-reload
41 sudo systemctl enable --now containerd
42 # Check that containerd service is up and running
43 systemctl status containerd
44 curl -LO https://github.com/opencontainers/runc/releases/download/v1.1.12/runc.amd64
45 sudo install -m 755 runc.amd64 /usr/local/sbin/runc
46 curl -LO https://github.com/containernetworking/plugins/releases/download/v1.5.0/cni-plugins-linux-amd64-v1.5.0.tgz
47 sudo mkdir -p /opt/cni/bin
48 sudo tar Cxzvf /opt/cni/bin cni-plugins-linux-amd64-v1.5.0.tgz
49 sudo apt-get update
50 sudo apt-get install -y apt-transport-https ca-certificates curl gpg
51 curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.29/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
52 echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.29/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
53 sudo apt-get update
54 sudo apt-get install -y kubelet=1.29.6-1.1 kubeadm=1.29.6-1.1 kubectl=1.29.6-1.1 --allow-downgrades --allow-change-held-packages
55 sudo apt-mark hold kubelet kubeadm kubectl
56 kubeadm version
57 kubelet --version
58 kubectl version --client
59 sudo crictl config runtime-endpoint unix:///var/run/containerd/containerd.sock
60 sudo crictl ps
61 ping 192.168.1.17
62 kubeadm join 192.168.1.17:6443 --token m2nkd9.l1ir7saoqjktw1d0 --discovery-token-ca-cert-hash sha256:776608160328af88861f5b3215012d99d0cdb03b31ebb4e7aa532750c0c219ee
63 sudo kubeadm join 192.168.1.17:6443 --token m2nkd9.l1ir7saoqjktw1d0 --discovery-token-ca-cert-hash sha256:776608160328af88861f5b3215012d99d0cdb03b31ebb4e7aa532750c0c219ee
64 sudo kubectl run nginx-pod --image=nginx:latest --port=80
65 kubectl get node
66 sudo kubectl run nginx-pod --image=nginx:latest --port=80
67 kubelet get pod
68 kubectl get pod
69 cd /etc/
70 cd kubernetes/
71 ls
72 cat kubelet.conf
73 sudo cat kubelet.conf
74 history
GIT Terraform Bitbucket Deployment Steps
Step 1: