Red Hat Training

A Red Hat training course is available for OpenShift Container Platform

8.3. 安装 OpenShift Container Registry

  1. 参阅 规划您的安装开。安装 OCR 使用相同的过程，但需要在清单文件中进行一些特定的设置。安装文档包含清单文件可用 Ansible 变量的完整列表。
  2. 完成主机准备步骤。

  3. 在 /etc/ansible/hosts 目录中创建 清单文件:

    重要

    要安装独立 OCR，您必须在 [OSEv3:vars] 部分的清单文件中设置 deployment_subtype=registry。

    为不同的系统拓扑使用以下示例清单文件：

    All-in-one 独立 OpenShift Container Registry 清单文件

    # Create an OSEv3 group that contains the masters and nodes groups
[OSEv3:children]
masters
nodes
etcd

# Set variables common for all OSEv3 hosts
[OSEv3:vars]
# SSH user, this user should allow ssh based auth without requiring a password
ansible_ssh_user=root

openshift_master_default_subdomain=apps.test.example.com

# If ansible_ssh_user is not root, ansible_become must be set to true
#ansible_become=true

openshift_deployment_type=openshift-enterprise
deployment_subtype=registry 1
openshift_hosted_infra_selector="" 2

# uncomment the following to enable htpasswd authentication; defaults to DenyAllPasswordIdentityProvider
#openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

# host group for masters
[masters]
registry.example.com

# host group for etcd
[etcd]
registry.example.com

# host group for nodes
[nodes]
registry.example.com openshift_node_group_name='node-config-all-in-one'

    1
    设置 deployment_subtype=registry 以确保安装独立 OCR 而不是完整的 OpenShift Container Platform 环境。
    2
    允许 registry 及其 Web 控制台调度到单一主机上。

    多个 master（高可用性）独立 OpenShift Container Registry 清单文件

    # Create an OSEv3 group that contains the master, nodes, etcd, and lb groups.
# The lb group lets Ansible configure HAProxy as the load balancing solution.
# Comment lb out if your load balancer is pre-configured.
[OSEv3:children]
masters
nodes
etcd
lb

# Set variables common for all OSEv3 hosts
[OSEv3:vars]
ansible_ssh_user=root
openshift_deployment_type=openshift-enterprise
deployment_subtype=registry 1

openshift_master_default_subdomain=apps.test.example.com

# Uncomment the following to enable htpasswd authentication; defaults to
# DenyAllPasswordIdentityProvider.
#openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

# Native high availability cluster method with optional load balancer.
# If no lb group is defined installer assumes that a load balancer has
# been preconfigured. For installation the value of
# openshift_master_cluster_hostname must resolve to the load balancer
# or to one or all of the masters defined in the inventory if no load
# balancer is present.
openshift_master_cluster_method=native
openshift_master_cluster_hostname=openshift-internal.example.com
openshift_master_cluster_public_hostname=openshift-cluster.example.com

# apply updated node-config-compute group defaults
openshift_node_groups=[{'name': 'node-config-compute', 'labels': ['node-role.kubernetes.io/compute=true'], 'edits': [{'key': 'kubeletArguments.pods-per-core','value': ['20']}, {'key': 'kubeletArguments.max-pods','value': ['250']}, {'key': 'kubeletArguments.image-gc-high-threshold', 'value':['90']}, {'key': 'kubeletArguments.image-gc-low-threshold', 'value': ['80']}]}]

# enable ntp on masters to ensure proper failover
openshift_clock_enabled=true

# host group for masters
[masters]
master1.example.com
master2.example.com
master3.example.com

# host group for etcd
[etcd]
etcd1.example.com
etcd2.example.com
etcd3.example.com

# Specify load balancer host
[lb]
lb.example.com

# host group for nodes, includes region info
[nodes]
master[1:3].example.com openshift_node_group_name='node-config-master-infra'
node1.example.com       openshift_node_group_name='node-config-compute'
node2.example.com       openshift_node_group_name='node-config-compute'

    1
    设置 deployment_subtype=registry 以确保安装独立 OCR 而不是完整的 OpenShift Container Platform 环境。

  4. 安装独立 OCR。这个过程与完整集群安装过程类似。

    重要

    运行 Ansible playbook 的主机，对于清单（inventory）文件中的每个主机都至少需要有 75MiB 可用内存。

    1. 在部署新集群前，请切换到集群目录，并运行 prerequisites.yml playbook: 

      $ cd /usr/share/ansible/openshift-ansible
$ ansible-playbook  [-i /path/to/inventory] \ 1
    playbooks/prerequisites.yml
      1
      如果您的清单文件不在 /etc/ansible/hosts 目录中，使用 -i 指定清单文件的路径。

      您必须只运行此 playbook 一次。

    2. 要启动安装，切换到 playbook 目录并运行 deploy_cluster.yml playbook: 

      $ cd /usr/share/ansible/openshift-ansible
$ ansible-playbook  [-i /path/to/inventory] \ 1
    playbooks/deploy_cluster.yml
      1
      如果您的清单文件不在 /etc/ansible/hosts 目录中，使用 -i 指定清单文件的路径。