OpenShift Node 증설 > OpenShift 자료실

* Platform Version : Redhat OpenShift 3.11

Node unschdule 작업
 > new node openshift_schedulable=false

Node list
 worker4.ocp311.lds.kr 192.168.45.230

dns 등록 ip 정보 확인
  dig worker4.ocp311.lds.kr
    > worker4.ocp311.lds.kr 120 IN A 192.168.45.230

  신규 노드 사전 작업
  hostname 정의
  # hostname set-hostname [FQDN]

  bastion curl : 5000 // Docker registry
  # curl http://bastion.ocp311.lds.kr:5000

  bastion curl : 80 // Yum repository
  # curl http://bastion.ocp311.lds.kr:80

  NetworkManager 동작 확인
  # /etc/sysconfig/network-scripts
  # systemctl enable NetworkManager
  # systemctl status NetworkManager
 
  Selinux 동작 확인
  # /etc/selinux/config
    SELINUX=enforcing
  # sestatus
  # touch /.autorelabel

  기본 패키지 설치
  # yum install wget git net-tools bind-utils yum-utils iptables-services bridge-utils bash-completion kexec-tools sos psacct
  # yum update
  # reboot

  docker 설치
  # yum install docker-1.13.1
  # systemctl enable docker && systemctl start docker && systemctl status docker
 
  ssh key 복사
  # ssh-copy-id worker4.ocp311.lds.kr

  ansible 배포
  == bastion Node ==
  vi /etc/ansible/hosts.ocp311.fqdn.newnode
  [OSEv3:children]
  ...
  new_nodes
  worker4.ocp311.lds.kr openshift_node_group_name='node-config-compute' openshift_schedulable=false
 
  scaleup 실행
  # cd /usr/share/ansible/openshift-ansible
  # ansible-playbook -i /etc/ansible/hosts.ocp311.fqdn.newnode \
    /usr/share/ansible/openshift-ansible/playbooks/openshift-node/scaleup.yml \
-vvvv

  # oc get nodes -w
 
  신규노드 schedule
  == master node ==
  oc adm manage-node worker4.ocp311.lds.kr --schedulable=true
  oc get node

참고 URL
https://docs.openshift.com/container-platform/3.11/install/host_preparation.html
https://docs.openshift.com/container-platform/3.11/install/host_preparation.html#ensuring-host-access
https://docs.openshift.com/container-platform/3.11/install_config/adding_hosts_to_existing_cluster.html
https://docs.openshift.com/container-platform/3.11/install_config/adding_hosts_to_existing_cluster.htm