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0 Environmental description

Two centos At least two CentOS machines are required, one as the master node and the other as the worker node. The installed k8s version is 1.23.7.

There will be a comment like #master in front of each bash command, which is used to indicate which type of machine the command is used on.  If there is no comment, the bash command needs to be executed on both types of machines

This document contains the operation and execution process, you can compare the screenshots of the document during the installation process.

1 Basic environment preparation

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Preparing the basic environment to ensure the normal execution of subsequent operations.

1.1 Confirm your OS

Confirm that the operating system of the current machine is CentOS 7  .

Execute command

cat /etc/redhat-release

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If the name is long, it is recommended to use a combination of letters and dashes, such as "aa-bb-cc", here directly set to master and worker1.

Execute command

# master
hostnamectl set-hostname master
hostnamectl
# worker 
hostnamectl set-hostname worker1
hostnamectl 

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The changed host name needs to take effect after reboot.

Execute command

reboot

1.3 Set address mappinmapping

Set address mapping, and test the network.

Execute command

cat <<EOF>> /etc/hosts
${YOUR IP} master
${YOUR IP} worker1
EOF
ping master
ping worker1

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The main content is to install docker-ce, and configure the cgroup driver of docker as systemd, confirm the driver.

2.1 Uninstall old docker

Execute command

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It is worth noting that /root/.kube/config is Kubernetes host config and the /etc/karmada/karmada-apiserver.config is Karmada's configkarmada-apiserver config

Execute command

kubectl karmada --kubeconfig /etc/karmada/karmada-apiserver.config  joinjoin ${YOUR MEMBER NAME} --cluster-kubeconfig=${YOUR MEMBER CONFIG PATH} --cluster-context=${YOUR CLUSTER CONTEXT}

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Here is example command for your information: kubectl karmada --kubeconfig /etc/karmada/karmada-apiserver.config  join member1 --cluster-kubeconfig=/root/.kube/192.168.30.22_member1-config --cluster-context=kubernetes-admin@kubernetes

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