說明：本文主要介紹通過Ansible來部署Openshift 3.9

一、準備

系統準備

節點類型說明

Masters	物理主機或者虛擬機 系統：Fedora 21, CentOS 7.3, 7.4或者7.5 最少4vCPU 最少16GB內存 /var/最少40GB空間 /usr/local/bin最少1GB空間 容器臨時目錄最少1GB空間 ?
Nodes	物理主機或者虛擬機 系統：Fedora 21, CentOS 7.3, 7.4或者7.5 NetworkManager版本1.0以上 最少1vCPU 最少8GB內存 /var/最少15GB空間 /usr/local/bin最少1GB空間 容器臨時目錄最少1GB空間 ?
額外的etcd節點	最少20GB用來存儲etcd數據 ?

注：在安裝時可以通過ansible_inventory的配置忽略以上系統要求
擴展：對于生產部署時，Master的配置要求計算規則如下：每1000個pods需要額外的1核CPU和1.5GB內存。因此如果要滿足支持2000個pods的話，Master節點需要在最低配置2核CPU和16GB內存的基礎上再加2核CPU和3GB內存，共4核CPU 19GB內存。

安裝準備

關閉防火墻及selinux

systemctl disable firewalld systemctl stop firewalld sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/config setenforce 0

更改yum源 base74 、 openshift-3.9 、 epel 、 updates 和 extras。

#/etc/yum.repos.d/all.repo [base] name=CentOS-$releasever - Base baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/os/$basearch/ gpgcheck=0 [updates] name=CentOS-$releasever - Updates baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/updates/$basearch/ gpgcheck=0 [extras] name=CentOS-$releasever - Extras baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/extras/$basearch/ gpgcheck=0 [openshift-3.9] name=Openshift 3.9 baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/paas/$basearch/openshift-origin39/ gpgcheck=0 [epel] name=Centos EPEL baseurl=http://mirrors.ustc.edu.cn/epel/7/$basearch/ gpgcheck=0

清除緩存

yum makecache

二、安裝

安裝需要的軟件包

yum install vim git ansible wget java-1.8.0-openjdk httpd-tools python-passlib docker -y

下載openshift ansible部署腳本

git clone https://github.com/openshift/openshift-ansible.git -b release-3.9

禁用ansible腳本中的指定repo

sed -i 's/enabled=1/enabled=0/g' ./roles/openshift_repos/templates/CentOS-OpenShift-Origin.repo.j2

設置hostsname
a. 在 /etc/hosts 添加ip映射

# /etc/hosts 192.168.2.3 openshift

b. 更新本機hostname

hostnamectl set-hostname --static openshift

設置本地ssh無密鑰登錄

ssh-keygen -t rsassh-copy-id -i ~/.ssh/id_rsa.pub root@openshift#或將id_rsa.pub內容添加到~/.ssh/authorized_keys中

配置ansible hosts

[OSEv3:children] masters nodes etcd nfs[OSEv3:vars] ansible_ssh_user=root openshift_deployment_type=origin deployment_type=origin openshift_release=v3.9#如果使用自己的鏡像的話/etc/sysconfig/docker中會添加ADD_REGISTRY='--add-registry harbor.apps.com' #oreg_url=harbor.apps.com/openshift/origin-${component}:${version} #system_images_registry=harbor.apps.com #openshift_examples_modify_imagestreams=true #openshift_docker_additional_registries=harbor.apps.com #openshift_service_catalog_image_prefix=harbor.apps.com/openshift/origin- #openshift_metrics_image_prefix=harbor.apps.com/openshift/origin- #openshift_logging_image_prefix=harbor.apps.com/openshift/origin- #ansible_service_broker_image_prefix=harbor.apps.com/openshift/origin- #ansible_service_broker_etcd_image_prefix=harbor.apps.com/openshift/origin- #openshift_metrics_image_version=v3.9openshift_enable_service_catalog=false template_service_broker_install=false ansible_service_broker_install=falseopenshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login':'true','challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}] openshift_master_htpasswd_file=/etc/origin/master/htpasswd openshift_enable_unsupported_configurations=True openshift_docker_options="-l warn --ipv6=false --insecure-registry=0.0.0.0/0 --registry-mirror=https://docker.mirrors.ustc.edu.cn --log-opt max-size=1M --log-opt max-file=3" openshift_disable_check=memory_availability,disk_availability,package_availability,package_update,docker_image_availability,docker_storage_driver,docker_storage openshift_master_default_subdomain=apps.openshiftopenshift_metrics_install_metrics=true openshift_hosted_metrics_public_url=https://hawkular-metrics.apps.openshift/hawkular/metricsopenshift_logging_install_logging=true openshift_hosted_etcd_storage_kind=nfs openshift_hosted_etcd_storage_nfs_options="*(rw,root_squash,sync,no_wdelay)" openshift_hosted_etcd_storage_nfs_directory=/nfs-data openshift_hosted_etcd_storage_volume_name=etcd-vol2 openshift_hosted_etcd_storage_access_modes=["ReadWriteOnce"] openshift_hosted_etcd_storage_volume_size=1G openshift_hosted_etcd_storage_labels={'storage': 'etcd'}ansible_service_broker_image_prefix=registry.access.redhat.com/openshift3/ose- ansible_service_broker_registry_url=registry.access.redhat.com ansible_service_broker_registry_user=<user_name> ansible_service_broker_registry_password=<password> ansible_service_broker_registry_organization=<organization>[masters] openshift [etcd] openshift [nfs] openshift [nodes] openshift openshift_node_labels="{'region': 'infra', 'zone':'default'}" openshift_schedulable=true

如果要修改為自己的鏡像倉庫的話，還需要更改幾個yaml文件

# roles/openshift_web_console/defaults/main.yml（去掉docker.io/） openshift_web_console_image_dict:origin:prefix: "openshift/origin-"version: "{{ openshift_image_tag }}"image_name: "web-console"

執行安裝腳本

ansible-playbook playbooks/prerequisites.yml ansible-playbook playbooks/deploy_cluster.yml

創建管理員賬號

htpasswd -b /etc/origin/master/htpasswd admin admin oc adm policy add-cluster-role-to-user cluster-admin admin

三、展示

首頁展示

項目主頁展示

鏡像倉庫頁展示

參考文章
Openshift 3.9官方高級安裝手冊

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