openshift 容器云从入门到崩溃之三《安装openshift》

准备好环境，在安装之前请先了解openshift提供的ansible有大量的安装选项

文档地址：https://docs.okd.io/latest/install/configuring_inventory_file.html

1、配置/etc/ansible/hosts

[OSEv3:children]
masters
nodes
etcd
[OSEv3:vars]
openshift_deployment_type=origin
ansible_ssh_user=root
openshift_master_cluster_hostname=m1.example.com
openshift_master_cluster_public_hostname=www.oc.example.com
openshift_hosted_registry_cert_expire_days=
openshift_ca_cert_expire_days=
openshift_node_cert_expire_days=
openshift_master_cert_expire_days=
etcd_ca_default_days=
openshift_master_api_port=
openshift_master_default_subdomain=oc.example.com
openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]
openshift_disable_check=memory_availability,disk_availability,package_availability,package_update,dexampleker_image_availability,dexampleker_storage_driver,dexampleker_storage

[masters]
m1.example.com
m2.example.com
m3.example.com
[etcd]
m1.example.com
m2.example.com
m3.example.com
[nodes]
m1.example.com openshift_node_group_name='node-config-master-infra'
m2.example.com openshift_node_group_name='node-config-master-infra'
m3.example.com openshift_node_group_name='node-config-master-infra'
n1.example.com openshift_node_group_name='node-config-compute'
n2.example.com openshift_node_group_name='node-config-compute'
n3.example.com openshift_node_group_name='node-config-compute'

注意系统组件默认安装在node-config-master-infra节点上

2、运行安装程序

运行检查脚本

# ansible-playbook /root/openshift-ansible/playbooks/prerequisites.yml

没有问题运行安装脚本，如果想省事可以打开openshift_disable_check

ansible-playbook  /root/openshift-ansible/playbooks/deploy_cluster.yml

如果太慢可以试着网络加速（你懂得），或者提前把需要的镜像下载好

安装号以后验证一下节点是否都正常

# oc get node

看一下STATUS是否为Ready

浏览器打开https://www.oc.example.cn:8443/console/ 看是否正常