22.3. 使用 OpenShift Ansible Playbook 置备 OpenShift Container Platform 实例

all.yml 文件有许多选项，可以修改以符合您的特定需求。此文件中收集的信息适用于成功部署 OpenShift Container Platform 所需的实例的调配部分。务必要仔细审阅。本文档将提供所有 YAML 文件的精简版本，并专注于为成功部署而需要设置的最关键参数。

$ cat ~/inventory/group_vars/all.yml
---
openshift_openstack_clusterid: "openshift"
openshift_openstack_public_dns_domain: *"example.com"*
openshift_openstack_dns_nameservers: *["10.19.115.228"]*
openshift_openstack_public_hostname_suffix: "-public"
openshift_openstack_nsupdate_zone: "{{ openshift_openstack_public_dns_domain }}"

openshift_openstack_keypair_name: *"openshift"*
openshift_openstack_external_network_name: *"public"*

openshift_openstack_default_image_name: *"rhel75"*

## Optional (Recommended) - This removes the need for floating IPs
## on the OpenShift Cluster nodes
openshift_openstack_node_subnet_name: *<deployment-subnet-name>*
openshift_openstack_router_name: *<deployment-router-name>*
openshift_openstack_master_floating_ip: *false*
openshift_openstack_infra_floating_ip: *false*
openshift_openstack_compute_floating_ip: *false*
## End of Optional Floating IP section

openshift_openstack_num_masters: *3*
openshift_openstack_num_infra: *3*
openshift_openstack_num_cns: *0*
openshift_openstack_num_nodes: *2*

openshift_openstack_master_flavor: *"m1.master"*
openshift_openstack_default_flavor: *"m1.node"*

openshift_openstack_use_lbaas_load_balancer: *true*

openshift_openstack_docker_volume_size: "15"

# # Roll-your-own DNS
*openshift_openstack_external_nsupdate_keys:*
  public:
    *key_secret: '/alb8h0EAFWvb4i+CMA12w=='*
    *key_name: "update-key"*
    *key_algorithm: 'hmac-md5'*
    *server: '<ip-of-DNS>'*
  private:
    *key_secret: '/alb8h0EAFWvb4i+CMA12w=='*
    *key_name: "update-key"*
    *key_algorithm: 'hmac-md5'*
    *server: '<ip-of-DNS>'*

ansible_user: openshift

## cloud config
openshift_openstack_disable_root: true
openshift_openstack_user: openshift

以上以星号(*)括起的值需要根据您的 OpenStack 环境和 DNS 服务器进行修改。

要正确修改 All YAML 文件的 DNS 部分，登录到 DNS 服务器并执行以下命令捕获密钥名称、密钥算法和密钥 secret：

$ ssh <ip-of-DNS>
$ sudo -i
# cat /etc/named/<key-name.key>
key "update-key" {
	algorithm hmac-md5;
	secret "/alb8h0EAFWvb4i+CMA02w==";
};

以下 all.yml 文件启用 Kuryr SDN 而不是默认的 OpenShiftSDN。请注意，以下示例是密度的版本，务必要仔细检查默认模板。

$ cat ~/inventory/group_vars/all.yml
---
openshift_openstack_clusterid: "openshift"
openshift_openstack_public_dns_domain: *"example.com"*
openshift_openstack_dns_nameservers: *["10.19.115.228"]*
openshift_openstack_public_hostname_suffix: "-public"
openshift_openstack_nsupdate_zone: "{{ openshift_openstack_public_dns_domain }}"

openshift_openstack_keypair_name: *"openshift"*
openshift_openstack_external_network_name: *"public"*

openshift_openstack_default_image_name: *"rhel75"*

## Optional (Recommended) - This removes the need for floating IPs
## on the OpenShift Cluster nodes
openshift_openstack_node_subnet_name: *<deployment-subnet-name>*
openshift_openstack_router_name: *<deployment-router-name>*
openshift_openstack_master_floating_ip: *false*
openshift_openstack_infra_floating_ip: *false*
openshift_openstack_compute_floating_ip: *false*
## End of Optional Floating IP section

openshift_openstack_num_masters: *3*
openshift_openstack_num_infra: *3*
openshift_openstack_num_cns: *0*
openshift_openstack_num_nodes: *2*

openshift_openstack_master_flavor: *"m1.master"*
openshift_openstack_default_flavor: *"m1.node"*

## Kuryr configuration
openshift_use_kuryr: True
openshift_use_openshift_sdn: False
use_trunk_ports: True
os_sdn_network_plugin_name: cni
openshift_node_proxy_mode: userspace
kuryr_openstack_pool_driver: nested
openshift_kuryr_precreate_subports: 5

kuryr_openstack_public_net_id: *<public_ID>*

# To disable namespace isolation, comment out the next 2 lines
openshift_kuryr_subnet_driver: namespace
openshift_kuryr_sg_driver: namespace
# If you enable namespace isolation, `default` and `openshift-monitoring` become the
# global namespaces. Global namespaces can access all namespaces. All
# namespaces can access global namespaces.
# To make other namespaces global, include them here:
kuryr_openstack_global_namespaces: default,openshift-monitoring

# If OpenStack cloud endpoints are accessible over HTTPS, provide the CA certificate
kuryr_openstack_ca: *<path-to-ca-certificate>*

openshift_master_open_ports:
- service: dns tcp
  port: 53/tcp
- service: dns udp
  port: 53/udp
openshift_node_open_ports:
- service: dns tcp
  port: 53/tcp
- service: dns udp
  port: 53/udp

# To set the pod network CIDR range, uncomment the following property and set its value:
#
# openshift_openstack_kuryr_pod_subnet_prefixlen: 24
#
# The subnet prefix length value must be smaller than the CIDR value that is
# set in the inventory file as openshift_openstack_kuryr_pod_subnet_cidr.
# By default, this value is /24.

# openshift_portal_net is the range that OpenShift services and their associated Octavia
# load balancer VIPs use. Amphora VMs use Neutron ports in the range that is defined by
# openshift_openstack_kuryr_service_pool_start and openshift_openstack_kuryr_service_pool_end.
#
# The value of openshift_portal_net in the OSEv3.yml file must be within the range that is
# defined by openshift_openstack_kuryr_service_subnet_cidr. This range must be half
# of openshift_openstack_kuryr_service_subnet_cidr's range. This practice ensures that
# openshift_portal_net does not overlap with the range that load balancers' VMs use, which is
# defined by openshift_openstack_kuryr_service_pool_start and openshift_openstack_kuryr_service_pool_end.
#
# For reference only, copy the value in the next line from OSEv3.yml:
# openshift_portal_net: *"172.30.0.0/16"*

openshift_openstack_kuryr_service_subnet_cidr: *"172.30.0.0/15"*
openshift_openstack_kuryr_service_pool_start: *"172.31.0.1"*
openshift_openstack_kuryr_service_pool_end: *"172.31.255.253"*

# End of Kuryr configuration

openshift_openstack_use_lbaas_load_balancer: *true*

openshift_openstack_docker_volume_size: "15"

# # Roll-your-own DNS
*openshift_openstack_external_nsupdate_keys:*
  public:
    *key_secret: '/alb8h0EAFWvb4i+CMA12w=='*
    *key_name: "update-key"*
    *key_algorithm: 'hmac-md5'*
    *server: '<ip-of-DNS>'*
  private:
    *key_secret: '/alb8h0EAFWvb4i+CMA12w=='*
    *key_name: "update-key"*
    *key_algorithm: 'hmac-md5'*
    *server: '<ip-of-DNS>'*

ansible_user: openshift

## cloud config
openshift_openstack_disable_root: true
openshift_openstack_user: openshift

OSEv3 YAML 文件指定与 OpenShift 安装相关的所有不同参数和自定义。

以下是文件的一个精简版本，其中包含成功部署所需的所有变量。根据特定 OpenShift Container Platform 部署所需的自定义，可能需要额外的变量。

$ cat ~/inventory/group_vars/OSEv3.yml
---

openshift_deployment_type: openshift-enterprise
openshift_release: v3.11
oreg_url: registry.access.redhat.com/openshift3/ose-${component}:${version}
openshift_examples_modify_imagestreams: true
oreg_auth_user: <oreg_auth_user>
oreg_auth_password: <oreg_auth_pw>
# The following is required if you want to deploy the Operator Lifecycle Manager (OLM)
openshift_additional_registry_credentials: [{'host':'registry.connect.redhat.com','user':'REGISTRYCONNECTUSER','password':'REGISTRYCONNECTPASSWORD','test_image':'mongodb/enterprise-operator:0.3.2'}]

openshift_master_default_subdomain: "apps.{{ (openshift_openstack_clusterid|trim == '') | ternary(openshift_openstack_public_dns_domain, openshift_openstack_clusterid + '.' + openshift_openstack_public_dns_domain) }}"

openshift_master_cluster_public_hostname: "console.{{ (openshift_openstack_clusterid|trim == '') | ternary(openshift_openstack_public_dns_domain, openshift_openstack_clusterid + '.' + openshift_openstack_public_dns_domain) }}"

#OpenStack Credentials:
openshift_cloudprovider_kind: openstack
openshift_cloudprovider_openstack_auth_url: "{{ lookup('env','OS_AUTH_URL') }}"
openshift_cloudprovider_openstack_username: "{{ lookup('env','OS_USERNAME') }}"
openshift_cloudprovider_openstack_password: "{{ lookup('env','OS_PASSWORD') }}"
openshift_cloudprovider_openstack_tenant_name: "{{ lookup('env','OS_PROJECT_NAME') }}"
openshift_cloudprovider_openstack_blockstorage_version: v2
openshift_cloudprovider_openstack_domain_name: "{{ lookup('env','OS_USER_DOMAIN_NAME') }}"
openshift_cloudprovider_openstack_conf_file: <path_to_local_openstack_configuration_file>

#Use Cinder volume for Openshift registry:
openshift_hosted_registry_storage_kind: openstack
openshift_hosted_registry_storage_access_modes: ['ReadWriteOnce']
openshift_hosted_registry_storage_openstack_filesystem: xfs
openshift_hosted_registry_storage_volume_size: 30Gi


openshift_hosted_registry_storage_openstack_volumeID: d65209f0-9061-4cd8-8827-ae6e2253a18d
openshift_hostname_check: false
ansible_become: true

#Setting SDN (defaults to ovs-networkpolicy) not part of OSEv3.yml
#For more info, on which to choose, visit:
#https://docs.openshift.com/container-platform/3.11/architecture/networking/sdn.html#overview
networkPluginName: redhat/ovs-networkpolicy
#networkPluginName: redhat/ovs-multitenant

#Configuring identity providers with Ansible
#For initial cluster installations, the Deny All identity provider is configured
#by default. It is recommended to be configured with either htpasswd
#authentication, LDAP authentication, or Allowing all authentication (not recommended)
#For more info, visit:
#https://docs.openshift.com/container-platform/3.10/install_config/configuring_authentication.html#identity-providers-ansible
#Example of Allowing All
#openshift_master_identity_providers: [{'name': 'allow_all', 'login': 'true', 'challenge': 'true', 'kind': 'AllowAllPasswordIdentityProvider'}]


#Optional Metrics (uncomment below lines for installation)

#openshift_metrics_install_metrics: true
#openshift_metrics_cassandra_storage_type: dynamic
#openshift_metrics_storage_volume_size: 25Gi
#openshift_metrics_cassandra_nodeselector: {"node-role.kubernetes.io/infra":"true"}
#openshift_metrics_hawkular_nodeselector: {"node-role.kubernetes.io/infra":"true"}
#openshift_metrics_heapster_nodeselector: {"node-role.kubernetes.io/infra":"true"}

#Optional Aggregated Logging (uncomment below lines for installation)

#openshift_logging_install_logging: true
#openshift_logging_es_pvc_dynamic: true
#openshift_logging_es_pvc_size: 30Gi
#openshift_logging_es_cluster_size: 3
#openshift_logging_es_number_of_replicas: 1
#openshift_logging_es_nodeselector: {"node-role.kubernetes.io/infra":"true"}
#openshift_logging_kibana_nodeselector: {"node-role.kubernetes.io/infra":"true"}
#openshift_logging_curator_nodeselector: {"node-role.kubernetes.io/infra":"true"}

有关列出的任何变量的更多详情，请参阅 OpenShift-Ansible 主机清单示例。