21.2. bastion 가상 머신으로 OpenShift Container Platform 설치

Red Hat Virtualization에서 bastion 가상 머신을 사용하여 OpenShift Container Platform을 설치합니다.

절차

rhel-bastion 에 로그인합니다.

다음 내용이 포함된 install_ocp.yaml 파일을 생성합니다.

---
- name: Openshift on RHV
  hosts: localhost
  connection: local
  gather_facts: false

  vars_files:
    - vars.yaml
    - secure_vars.yaml

  pre_tasks:
    - ovirt_auth:
        url:      "{{ engine_url }}"
        username: "{{ engine_user }}"
        password: "{{ engine_password }}"
        insecure: "{{ engine_insecure }}"
        ca_file:  "{{ engine_cafile | default(omit) }}"

  roles:
    - role: openshift_ovirt

- import_playbook: setup_dns.yaml
- import_playbook: /usr/share/ansible/openshift-ansible/playbooks/prerequisites.yml
- import_playbook: /usr/share/ansible/openshift-ansible/playbooks/openshift-node/network_manager.yml
- import_playbook: /usr/share/ansible/openshift-ansible/playbooks/deploy_cluster.yml

다음 내용이 포함된 setup_dns.yaml 파일을 생성합니다.

- hosts: masters
  strategy: free
  tasks:
    - shell: "echo {{ ansible_default_ipv4.address }} {{ inventory_hostname }} etcd.{{ inventory_hostname.split('.', 1)[1] }} openshift-master.{{ inventory_hostname.split('.', 1)[1] }} openshift-public-master.{{ inventory_hostname.split('.', 1)[1] }} docker-registry-default.apps.{{ inventory_hostname.split('.', 1)[1] }} webconsole.openshift-web-console.svc registry-console-default.apps.{{ inventory_hostname.split('.', 1)[1] }} >> /etc/hosts"
      when: openshift_ovirt_all_in_one is defined | ternary((openshift_ovirt_all_in_one | bool), false)

다음 콘텐츠를 포함하는 /etc/ansible/openshift_3_11.hosts Ansible 인벤토리 파일을 생성합니다.

[workstation]
localhost ansible_connection=local

[all:vars]
openshift_ovirt_dns_zone="{{ public_hosted_zone }}"
openshift_web_console_install=true
openshift_master_overwrite_named_certificates=true
openshift_master_cluster_hostname="openshift-master.{{ public_hosted_zone }}"
openshift_master_cluster_public_hostname="openshift-public-master.{{ public_hosted_zone }}"
openshift_master_default_subdomain="{{ public_hosted_zone }}"
openshift_public_hostname="{{openshift_master_cluster_public_hostname}}"
openshift_deployment_type=openshift-enterprise
openshift_service_catalog_image_version="{{ openshift_image_tag }}"

[OSEv3:vars]
# General variables
debug_level=1
containerized=false
ansible_ssh_user=root
os_firewall_use_firewalld=true
openshift_enable_excluders=false
openshift_install_examples=false
openshift_clock_enabled=true
openshift_debug_level="{{ debug_level }}"
openshift_node_debug_level="{{ node_debug_level | default(debug_level,true) }}"
osn_storage_plugin_deps=[]
openshift_master_bootstrap_auto_approve=true
openshift_master_bootstrap_auto_approver_node_selector={"node-role.kubernetes.io/master":"true"}
osm_controller_args={"experimental-cluster-signing-duration": ["20m"]}
osm_default_node_selector="node-role.kubernetes.io/compute=true"
openshift_enable_service_catalog=false

# Docker
container_runtime_docker_storage_type=overlay2
openshift_docker_use_system_container=false

[OSEv3:children]
nodes
masters
etcd
lb

[masters]
[nodes]
[etcd]
[lb]

Red Hat Enterprise Linux KVM 게스트 이미지 다운로드 링크를 가져옵니다.
1. Red Hat 고객 포털로 이동합니다. Red Hat Enterprise Linux 다운로드.
2. Product Software(제품 소프트웨어 ) 탭에서 Red Hat Enterprise Linux KVM 게스트 이미지를 찾습니다.
3. 지금 다운로드를 마우스 오른쪽 버튼으로 클릭하고 링크를 복사한 다음 저장합니다.
  bastion 가상 시스템을 생성할 때 복사한 링크를 사용하지 마십시오. 다운로드 링크는 시간에 민감하며 설치 플레이북을 실행하기 전에 복사해야 합니다.

다음 콘텐츠를 사용하여 vars.yaml 파일을 생성하고 매개 변수 값을 업데이트합니다.

---
# For detailed documentation of variables, see
# openshift_ovirt: https://github.com/openshift/openshift-ansible/tree/master/roles/openshift_ovirt#role-variables
# openshift installation: https://github.com/openshift/openshift-ansible/tree/master/inventory
engine_url: https://<Manager_FQDN>/ovirt-engine/api 1
engine_user: admin@internal
engine_password: "{{ engine_password }}"
engine_insecure: false
engine_cafile: /etc/pki/ovirt-engine/ca.pem

openshift_ovirt_vm_manifest:
  - name: 'master'
    count: 1
    profile: 'master_vm'
  - name: 'compute'
    count: 0
    profile: 'node_vm'
  - name: 'lb'
    count: 0
    profile: 'node_vm'
  - name: 'etcd'
    count: 0
    profile: 'node_vm'
  - name: infra
    count: 0
    profile: node_vm

# Currently, only all-in-one installation (`openshift_ovirt_all_in_one: true`) is supported.
# Multi-node installation (master and node VMs installed separately) will be supported in a future release.
openshift_ovirt_all_in_one: true
openshift_ovirt_cluster: Default
openshift_ovirt_data_store: data
openshift_ovirt_ssh_key: "{{ lookup('file', '/root/.ssh/id_rsa_ssh_ocp_admin.pub') }}"

public_hosted_zone:
# Uncomment to disable install-time checks, for smaller scale installations
#openshift_disable_check: memory_availability,disk_availability,docker_image_availability

qcow_url: <RHEL_KVM_guest_image_download_link> 2
image_path: /var/tmp
template_name: rhelguest7
template_cluster: "{{ openshift_ovirt_cluster }}"
template_memory: 4GiB
template_cpu: 1
template_disk_storage: "{{ openshift_ovirt_data_store }}"
template_disk_size: 100GiB
template_nics:
  - name: nic1
    profile_name: ovirtmgmt
    interface: virtio

debug_vm_create: false
wait_for_ip: true
vm_infra_wait_for_ip_retries: 30
vm_infra_wait_for_ip_delay: 20

node_item: &node_item
  cluster: "{{ openshift_ovirt_cluster }}"
  template: "{{ template_name }}"
  memory: "8GiB"
  cores: "2"
  high_availability: true
  disks:
    - name: docker
      size: 15GiB
      interface: virtio
      storage_domain: "{{ openshift_ovirt_data_store }}"
    - name: openshift
      size: 30GiB
      interface: virtio
      storage_domain: "{{ openshift_ovirt_data_store }}"
  state: running
  cloud_init:
    root_password: "{{ root_password }}"
    authorized_ssh_keys: "{{ openshift_ovirt_ssh_key }}"
    custom_script: "{{ cloud_init_script_node | to_nice_yaml }}"

openshift_ovirt_vm_profile:
  master_vm:
    <<: *node_item
    memory: 16GiB
    cores: "{{ vm_cores | default(4) }}"
    disks:
      - name: docker
        size: 15GiB
        interface: virtio
        storage_domain: "{{ openshift_ovirt_data_store }}"
      - name: openshift_local
        size: 30GiB
        interface: virtio
        storage_domain: "{{ openshift_ovirt_data_store }}"
      - name: etcd
        size: 25GiB
        interface: virtio
        storage_domain: "{{ openshift_ovirt_data_store }}"
    cloud_init:
      root_password: "{{ root_password }}"
      authorized_ssh_keys: "{{ openshift_ovirt_ssh_key }}"
      custom_script: "{{ cloud_init_script_master | to_nice_yaml }}"
  node_vm:
    <<: *node_item
  etcd_vm:
    <<: *node_item
  lb_vm:
    <<: *node_item

cloud_init_script_node: &cloud_init_script_node
  packages:
    - ovirt-guest-agent
  runcmd:
    - sed -i 's/# ignored_nics =.*/ignored_nics = docker0 tun0 /' /etc/ovirt-guest-agent.conf
    - systemctl enable ovirt-guest-agent
    - systemctl start ovirt-guest-agent
    - mkdir -p /var/lib/docker
    - mkdir -p /var/lib/origin/openshift.local.volumes
    - /usr/sbin/mkfs.xfs -L dockerlv /dev/vdb
    - /usr/sbin/mkfs.xfs -L ocplv /dev/vdc
  mounts:
    - [ '/dev/vdb', '/var/lib/docker', 'xfs', 'defaults,gquota' ]
    - [ '/dev/vdc', '/var/lib/origin/openshift.local.volumes', 'xfs', 'defaults,gquota' ]
  power_state:
    mode: reboot
    message: cloud init finished - boot and install openshift
    condition: True
cloud_init_script_master:
  <<: *cloud_init_script_node
  runcmd:
    - sed -i 's/# ignored_nics =.*/ignored_nics = docker0 tun0 /' /etc/ovirt-guest-agent.conf
    - systemctl enable ovirt-guest-agent
    - systemctl start ovirt-guest-agent
    - mkdir -p /var/lib/docker
    - mkdir -p /var/lib/origin/openshift.local.volumes
    - mkdir -p /var/lib/etcd
    - /usr/sbin/mkfs.xfs -L dockerlv /dev/vdb
    - /usr/sbin/mkfs.xfs -L ocplv /dev/vdc
    - /usr/sbin/mkfs.xfs -L etcdlv /dev/vdd
  mounts:
    - [ '/dev/vdb', '/var/lib/docker', 'xfs', 'defaults,gquota' ]
    - [ '/dev/vdc', '/var/lib/origin/openshift.local.volumes', 'xfs', 'defaults,gquota' ]
    - [ '/dev/vdd', '/var/lib/etcd', 'xfs', 'defaults,gquota' ]

1: 관리자 시스템의 FQDN.
2: <qcow_url> 은 Red Hat Enterprise Linux KVM 게스트 이미지의 다운로드 링크입니다. Red Hat Enterprise Linux KVM 게스트 이미지 에는 이 플레이북에 필요한 cloud-init 패키지가 포함되어 있습니다. Red Hat Enterprise Linux를 사용하지 않는 경우, 이 플레이북을 실행하기 전에 cloud-init 패키지를 다운로드하여 수동으로 설치합니다.

OpenShift Container Platform을 설치합니다.

# export ANSIBLE_ROLES_PATH="/usr/share/ansible/roles/:/usr/share/ansible/openshift-ansible/roles"
# export ANSIBLE_JINJA2_EXTENSIONS="jinja2.ext.do"
# ansible-playbook -i /etc/ansible/openshift_3_11.hosts install_ocp.yaml -e @vars.yaml -e @secure_vars.yaml --ask-vault-pass

각 인프라 인스턴스에 대해 라우터의 DNS 항목을 만듭니다.
라우터에서 애플리케이션에 트래픽을 전달할 수 있도록 라운드 로빈 라우팅을 구성합니다.
OpenShift Container Platform 웹 콘솔의 DNS 항목을 생성합니다.
로드 밸런서 노드의 IP 주소를 지정합니다.

21.2. bastion 가상 머신으로 OpenShift Container Platform 설치

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