Tips for kubespray deployment (7 nodes)

1. On all nodes
   apt install python-minimal echo '127.0.0.1 hostname' >> /etc/hosts
2. On kubespray machine
   apt-get update apt-get install software-properties-common apt-add-repository ppa:ansible/ansible apt-get update apt-get install ansible apt install python-netaddr git clone https://github.com/kubernetes-incubator/kubespray.git
3. cd kubespray; cp -rfp inventory/sample inventory/mycluster
4. declare -a IPS=(IP1_master IP2_master2 IP3_compute1 IP4_compute2 IP5_etcd1 IP6_etcd2 IP7_etcd3)
5. CONFIG_FILE=inventory/mycluster/hosts.ini python3 contrib/inventory_builder/inventory.py ${IPS[@]}
6. Reconfigure inventory/mycluster/hosts.ini file if needed
7. configure inventory/mycluster/group_vars/* if needed
   all.yaml k8s-cluster.yaml Also, I recommend before deployment to look on these vars:
   cat inventory/mycluster/group_vars/k8s-cluster.yml
   docker_dns_servers_strict: false
   cat roles/kubernetes/node/defaults/main.yml
   kube_cadvisor_port: 4194
   kubelet_bind_address: 0.0.0.0
   If you are planning to use Calioco on virtual environment with host mtu < 1500 do not forget to correct this one too:
   cat roles/network_plugin/calico/defaults/main.yml
   calico_mtu: 1400
8. ansible-playbook -i inventory/mycluster/hosts.ini cluster.yml
9. If you are experiencing timeouts, you should check that in /etc/hosts on every host exists correct localhost line. It happens cause sudo cant resolve localhost.
   for i in IP1 IP2 IP3 IP4 IP5 IP6 IP7; do ssh -x $i 'echo 127.0.0.1 hostname >> /etc/hosts'
10. If you are planning to use nfs pv, then you should to install nfs-common package on all computes/masters
    for i in IP1 IP2 IP3 IP4; do ssh -x $i 'apt update; apt -y install nfs-common'
11. After deploy you can find your credentials in inventory/mycluster/credentials/kube_user, and kube/config on all masters
12. If you want to change stuff in kubelets after deploying, go to /etc/kubernetes/kubelet.env and restart kubelet service
    If you want to use prometheus / grafana do stuff that mentioned in Cheats