(Created page with "==Create Pod== Create pod with the following command:<syntaxhighlight lang="bash"> kubectl apply -f pod.yaml #apply the config in the .yaml file </syntaxhighlight>inspect the pods conents:<syntaxhighlight lang="bash"> ps auxf </syntaxhighlight>use ctl command to see base info:<syntaxhighlight lang="bash"> sudo ctr --namespace=k8s.io containers ls </syntaxhighlight>") |
|||
| (2 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
== Install Kubeadm == | |||
Install Kubeadm with the following steps: | |||
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/ | |||
=== Error with running kubeadm init === | |||
Error can be caused by containerd running. | |||
Error seen: "[ERROR CRI]: container runtime is not running: output: time="2024-05-27T17:40:33+01:00" level=fatal msg="validate service connection: validate CRI v1 runtime API for endpoint \"unix:///var/run/containerd/containerd.sock\": rpc error: code = Unimplemented desc = unknown service " | |||
fix by deleting the containerd config file and restarting containerd:<syntaxhighlight lang="bash"> | |||
rm /etc/containerd/config.toml | |||
systemctl restart containerd | |||
kubeadm init | |||
</syntaxhighlight>You may need to open the following ports to allow nodes to communicate with the control plane:<syntaxhighlight lang="bash"> | |||
sudo firewall-cmd --permanent --add-port=6443/tcp | |||
sudo firewall-cmd --permanent --add-port=2379-2380/tcp | |||
sudo firewall-cmd --permanent --add-port=10250/tcp | |||
sudo firewall-cmd --permanent --add-port=10251/tcp | |||
sudo firewall-cmd --permanent --add-port=10252/tcp | |||
sudo firewall-cmd --permanent --add-port=10255/tcp | |||
sudo firewall-cmd –reload | |||
</syntaxhighlight>Then open the following ports on the worker nodes:<syntaxhighlight lang="bash"> | |||
sudo firewall-cmd --permanent --add-port=10251/tcp | |||
sudo firewall-cmd --permanent --add-port=10255/tcp | |||
firewall-cmd --reload | |||
</syntaxhighlight> | |||
==Create Pod== | ==Create Pod== | ||
Create pod with the following command:<syntaxhighlight lang="bash"> | Create pod with the following command:<syntaxhighlight lang="bash"> | ||
| Line 8: | Line 36: | ||
</syntaxhighlight>use ctl command to see base info:<syntaxhighlight lang="bash"> | </syntaxhighlight>use ctl command to see base info:<syntaxhighlight lang="bash"> | ||
sudo ctr --namespace=k8s.io containers ls | sudo ctr --namespace=k8s.io containers ls | ||
</syntaxhighlight>See running containers in the pod using ctl:<syntaxhighlight lang="bash"> | |||
sudo crictl ps | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 17:50, 27 May 2024
Install Kubeadm
Install Kubeadm with the following steps:
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
Error with running kubeadm init
Error can be caused by containerd running.
Error seen: "[ERROR CRI]: container runtime is not running: output: time="2024-05-27T17:40:33+01:00" level=fatal msg="validate service connection: validate CRI v1 runtime API for endpoint \"unix:///var/run/containerd/containerd.sock\": rpc error: code = Unimplemented desc = unknown service "
fix by deleting the containerd config file and restarting containerd:
rm /etc/containerd/config.toml
systemctl restart containerd
kubeadm init
You may need to open the following ports to allow nodes to communicate with the control plane:
sudo firewall-cmd --permanent --add-port=6443/tcp
sudo firewall-cmd --permanent --add-port=2379-2380/tcp
sudo firewall-cmd --permanent --add-port=10250/tcp
sudo firewall-cmd --permanent --add-port=10251/tcp
sudo firewall-cmd --permanent --add-port=10252/tcp
sudo firewall-cmd --permanent --add-port=10255/tcp
sudo firewall-cmd –reload
Then open the following ports on the worker nodes:
sudo firewall-cmd --permanent --add-port=10251/tcp
sudo firewall-cmd --permanent --add-port=10255/tcp
firewall-cmd --reload
Create Pod
Create pod with the following command:
kubectl apply -f pod.yaml #apply the config in the .yaml file
inspect the pods conents:
ps auxf
use ctl command to see base info:
sudo ctr --namespace=k8s.io containers ls
See running containers in the pod using ctl:
sudo crictl ps