systemvm/debian/opt/cloud/bin/setup/cksnode.sh

#!/bin/bash
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. /opt/cloud/bin/setup/common.sh

setup_k8s_node() {
    log_it "Setting up k8s node"

    update-alternatives --set iptables /usr/sbin/iptables-legacy
    update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
    update-alternatives --set arptables /usr/sbin/arptables-legacy
    update-alternatives --set ebtables /usr/sbin/ebtables-legacy

    # set default ssh port and restart sshd service
    sed -i 's/3922/22/g' /etc/ssh/sshd_config
    systemctl restart ssh

    # Prevent root login
    > /root/.ssh/authorized_keys
    passwd -l root
    #sed -i 's#root:x:0:0:root:/root:/bin/bash#root:x:0:0:root:/root:/sbin/nologin#' /etc/passwd

    swapoff -a
    sudo sed -i '/ swap / s/^/#/' /etc/fstab
    log_it "Swap disabled"

    log_it "Setting up interfaces"
    setup_system_rfc1918_internal

    log_it "Setting up entry in hosts"
    sed -i  /$NAME/d /etc/hosts
    echo "$ETH0_IP $NAME" >> /etc/hosts

    public_ip=`getPublicIp`
    echo "$public_ip $NAME" >> /etc/hosts

    echo "export PATH='$PATH:/opt/bin/'">> ~/.bashrc

    disable_rpfilter
    enable_fwding 1
    enable_irqbalance 0
    setup_ntp
    dhclient -1

    rm -f /etc/logrotate.d/cloud

    log_it "Starting cloud-init services"
    systemctl enable --now --no-block containerd
    if [ -f /home/cloud/success ]; then
      systemctl stop cloud-init cloud-config cloud-final
      systemctl disable cloud-init cloud-config cloud-final
    else
      systemctl start --no-block cloud-init
      systemctl start --no-block cloud-config
      systemctl start --no-block cloud-final
    fi
}

setup_k8s_node