Prepare the Hosts

The following packages have to be installed. If the tdnf command returns “Nothing to do,” the package is already installed.

  • Install Kubernetes on all hosts (both photon-master and photon-node).

    tdnf install kubernetes
    
  • Install iptables on photon-master and photon-node:

    tdnf install iptables
    
  • Open the tcp port 8080 (api service) on the photon-master in the firewall

    iptables -A INPUT -p tcp --dport 8080 -j ACCEPT
    
  • Open the tcp port 10250 (api service) on the photon-node in the firewall

    iptables -A INPUT -p tcp --dport 10250 -j ACCEPT
    
  • Install Docker on photon-node:

    tdnf install docker
    
  • Add master and node to /etc/hosts on all machines (not needed if the hostnames are already in DNS). Make sure that communication works between photon-master and photon-node by using a utility such as ping.

    echo "192.168.121.9	photon-master
    192.168.121.65	photon-node" >> /etc/hosts
    
  • Edit /etc/kubernetes/config, which will be the same on all the hosts (master and node), so that it contains the following lines:

    # Comma separated list of nodes in the etcd cluster
    KUBE_MASTER="--master=http://photon-master:8080"
    
    # logging to stderr routes it to the systemd journal
    KUBE_LOGTOSTDERR="--logtostderr=true"
    
    # journal message level, 0 is debug
    KUBE_LOG_LEVEL="--v=0"
    
    # Should this cluster be allowed to run privileged docker containers
    KUBE_ALLOW_PRIV="--allow_privileged=false"
    
Last modified March 24, 2021: big docs v4 cleanup (80869a1a7)