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K8's : Observing connectivity issue between Working Node and Master Node - Post running Kubeadm init #92

Closed ramoct15 closed 4 years ago

ramoct15 commented 4 years ago

Unable to map Working node to Master Node in the kubectl cluster

Steps : (Master & Working Node) sudo apt-get update sudo apt-get install docker.io sudo apt-get update && sudo apt-get install -y apt-transport-https curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list deb https://apt.kubernetes.io/ kubernetes-xenial main EOF sudo apt-get update sudo apt-get install -y kubelet kubeadm kubectl sudo apt-mark hold kubelet kubeadm kubectl

Master Node (Root User) : Kubeadm init

Master Node (Normal User) : mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config

MasterNode (Normal User) : Pod Network connectivity kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

Working Node (Root User) : Executed below command

kubeadm join 10.0.0.7:6443 --token 4l2gx7.q82xnl79v339hyyf \ --discovery-token-ca-cert-hash sha256:e2b4454d23feec2a8184fd1c3c6c1b71ff3c3e8c39f2963a20a983f5feb16b7d

Note : Tried reset kubeadm reset -f (Master Node) and performed kubeadm init ---> but below issue still exists Issue : root@node:~# kubeadm join 10.0.0.7:6443 --token 4l2gx7.q82xnl79v339hyyf \

--discovery-token-ca-cert-hash sha256:e2b4454d23feec2a8184fd1c3c6c1b71ff3c3e8c39f2963a20a983f5feb16b7d

W0711 19:03:46.103485 19848 join.go:346] [preflight] WARNING: JoinControlPane.controlPlane settings will be ignored when control-plane flag is not set. [preflight] Running pre-flight checks error execution phase preflight: couldn't validate the identity of the API Server: Get https://10.0.0.7:6443/api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers) To see the stack trace of this error execute with --v=5 or higher

Kindly check and update.

srmanikanta commented 4 years ago

open port 6443 in network security rules

ramoct15 commented 4 years ago

Got the issue resolved already.

Thank you

On Sat, 8 Aug, 2020, 7:00 pm srmanikanta, notifications@github.com wrote:

open port 6443 in network security

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