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2023-12-01

Inventory

Ansible inventory 文件描述了有关集群中主机的详细信息以及 OpenShift 安装过程的详细配置。OpenShift 安装 playbooks 会读取该 inventory 文件,以了解在何处以及如何在一组主机上安装 OpenShift。

本部分说明如何在 Master 节点编辑 /etc/ansible/hosts,主要通过变量控制安装。

集群变量

名称作用域描述

ansible_ssh_user

General

Ansible SSH 登录用户,默认 root,且需要免密登录。

debug_level

General

Ansible 输出日志级别,可能的值 0, 2, 4, 6, 8,默认 2,输出 INFO 日志,4 为 DEBUG 日志

openshift_clock_enabled

General

是否开启网络时钟 NTP,默认值 true

openshift_master_cluster_method

General

部署多个 Master 时定义 HA 的方法,支持 native 方法

openshift_master_identity_providers

General

配置认证提供者,

openshift_hosted_registry_cert_expire_days

General

默认自动生成的证书过期时间

os_firewall_use_firewalld

General

3.9 及以后的版本安装推荐使用 firewalld,设定为 true 默认使用 firewalld,而不是直接使用 iptables。

openshift_router_selector

General

设定部署 router Pod 的节点

openshift_registry_selector

General

设定部署 Registry Pod 的节点

openshift_template_service_broker_namespaces

General

Enables the template service broker by specifying one or more namespaces whose templates will be served by the broker.

openshift_master_bootstrap_auto_approve

General

Enables TLS bootstrapping auto approval, which allows nodes to automatically join the cluster when provided a bootstrap credential. 默认值为 false

template_service_broker_selector

General

设定部署 Service Broker Pod 的节点

osm_default_node_selector

General

设定默认应用 Pod 部署的计算节点

openshift_docker_insecure_registries

General

设定一个非安全 Docker 仓库,Ansible 运行会将其配置到 Docker。

openshift_image_tag

General

设定一个全局镜像 TAG

openshift_pkg_version

General

设定一个全局的 RPM 包版本号

openshift_master_default_subdomain

Networking

设定路由使用的子域名地址

os_sdn_network_plugin_name

Networking

设定默认网络插件名称,默认 redhat/openshift-ovs-subnet

osm_cluster_network_cidr

Networking

This variable overrides the SDN cluster network CIDR block. This is the network from which pod IPs are assigned. Specify a private block that does not conflict with existing network blocks in your infrastructure to which pods, nodes, or the master might require access.

openshift_portal_net

Networking

配置子网的范围,默认 172.30.0.0/16

openshift_use_openshift_sdn

Networking

设定为 false 使 OpenShift SDN 插件失效

示例 - 全局集群变量
ansible_ssh_user=root
debug_level=2
openshift_clock_enabled=true
openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

openshift_hosted_registry_cert_expire_days=3650
os_firewall_use_firewalld=true

openshift_router_selector='node-role.kubernetes.io/infra=true'
openshift_registry_selector='node-role.kubernetes.io/infra=true'
template_service_broker_selector='node-role.kubernetes.io/infra=true'
osm_default_node_selector='node-role.kubernetes.io/compute=true'

openshift_template_service_broker_namespaces=['openshift','tsb']

openshift_docker_insecure_registries="registry.example.com"

openshift_metrics_hawkular_hostname=hawkular-metrics.apps.example.com

openshift_image_tag=v3.11.16
示例 - 网络变量
openshift_master_default_subdomain=apps.example.com

os_sdn_network_plugin_name='redhat/openshift-ovs-subnet'
#os_sdn_network_plugin_name='redhat/openshift-ovs-multitenant'
#os_sdn_network_plugin_name='redhat/openshift-ovs-networkpolicy'

osm_cluster_network_cidr=10.244.0.0/16
openshift_portal_net=172.30.0.0/16

部署类型

确保部署类型为 openshift-enterprise
openshift_deployment_type=openshift-enterprise

外部镜像仓库位置

如果不使用默认红帽提供的镜像仓库 registry.redhat.io,而使用一个外部镜像仓库,需要定义如下变量
oreg_url=registry.example.com/openshift3/ose-${component}:${version}
openshift_examples_modify_imagestreams=true
#oreg_auth_user=admin
#oreg_auth_password=admin

内部镜像仓库路径

为了允许用户向内部镜像仓库推送/拉取镜像,需要添加如下配置
openshift_hosted_registry_routehost=registry.apps.example.com
openshift_hosted_registry_routetermination=reencrypt
openshift_hosted_registry_routecertificates= "{'certfile': '/etc/crts/com-example-cert.pem', 'keyfile': '/etc/crts/com-example-privkey.pem', 'cafile': '/etc/crts/com-example-chain.pem'}"

Web Console

openshift_web_console_install=true
openshift_web_console_prefix=registry.example.com/openshift3/ose-
openshift_web_console_version=v3.11.16

示例

Inventory说明

hosts-3.11.16-2

OpenShift 3.11.16

hosts-3.11.16

OpenShift 3.11.16

hosts-3.10.45

OpenShift 3.10.45

hosts-3.10.14

OpenShift 3.10.14

hosts-3.9.30

OpenShift 3.9.30

hosts-3.9.25

OpenShift 3.9.25

hosts-3.9.14

OpenShift 3.9.14

hosts-3.6

OpenShift 3.6

安装

1. Master 上执行 prerequisites 验证
# ansible-playbook -i hosts-3.11.16 /usr/share/ansible/openshift-ansible/playbooks/prerequisites.yml
2. Master 上执行 ansible 脚本
# ansible-playbook -i hosts-3.11.16 /usr/share/ansible/openshift-ansible/playbooks/deploy_cluster.yml

安装成功验证

1 - 查看 INSTALLER STATUS(ansible 脚本运行的结尾)
INSTALLER STATUS *****************************************************************************************************************************************************************************
Initialization              : Complete (0:00:27)
Health Check                : Complete (0:00:03)
Node Bootstrap Preparation  : Complete (0:11:25)
etcd Install                : Complete (0:00:42)
NFS Install                 : Complete (0:00:09)
Master Install              : Complete (0:03:43)
Master Additional Install   : Complete (0:01:02)
Node Join                   : Complete (0:03:48)
Hosted Install              : Complete (0:00:58)
Web Console Install         : Complete (0:00:41)
Metrics Install             : Complete (0:02:03)
Prometheus Install          : Complete (0:01:10)
Service Catalog Install     : Complete (0:07:20)
2 - 查看所有 Nodes
# oc get nodes
NAME                 STATUS    ROLES     AGE       VERSION
infra.example.com    Ready     infra     1h        v1.11.0+d4cacc0
master.example.com   Ready     master    1h        v1.11.0+d4cacc0
node1.example.com    Ready     compute   1h        v1.11.0+d4cacc0
node2.example.com    Ready     compute   1h        v1.11.0+d4cacc0
3 - 查看所有 Projects
# oc projects
You have access to the following projects and can switch between them with 'oc project <projectname>':

  * default
    kube-public
    kube-service-catalog
    kube-system
    management-infra
    openshift
    openshift-ansible-service-broker
    openshift-console
    openshift-infra
    openshift-logging
    openshift-metrics
    openshift-metrics-server
    openshift-monitoring
    openshift-node
    openshift-sdn
    openshift-template-service-broker
    openshift-web-console

Using project "default" on server "https://master.example.com:8443".
4 - 查看所有 Pods
# oc get pods --all-namespaces
NAMESPACE                           NAME                                           READY     STATUS      RESTARTS   AGE
default                             docker-registry-1-vj4q5                        1/1       Running     0          1h
default                             registry-console-1-wvm5x                       1/1       Running     0          1h
default                             router-1-kkxtz                                 1/1       Running     0          1h
kube-service-catalog                apiserver-wvpfb                                1/1       Running     0          33m
kube-service-catalog                controller-manager-wlhjp                       1/1       Running     0          33m
kube-system                         master-api-master.example.com                  1/1       Running     0          1h
kube-system                         master-controllers-master.example.com          1/1       Running     0          1h
kube-system                         master-etcd-master.example.com                 1/1       Running     0          1h
openshift-ansible-service-broker    asb-1-br294                                    1/1       Running     0          33m
openshift-console                   console-5896bbb547-v624t                       1/1       Running     0          1h
openshift-infra                     hawkular-cassandra-1-9mjqp                     1/1       Running     0          1h
openshift-infra                     hawkular-metrics-9wcns                         1/1       Running     0          1h
openshift-infra                     hawkular-metrics-schema-pg6x8                  0/1       Completed   0          1h
openshift-infra                     heapster-xw7jj                                 1/1       Running     0          1h
openshift-logging                   logging-es-data-master-ilrkj84i-2-2ddqb        0/2       Pending     0          2m
openshift-logging                   logging-es-data-master-ilrkj84i-2-deploy       1/1       Running     0          2m
openshift-logging                   logging-fluentd-5g9jm                          1/1       Running     0          35m
openshift-logging                   logging-fluentd-9r9tn                          1/1       Running     0          35m
openshift-logging                   logging-fluentd-j7tgr                          1/1       Running     0          35m
openshift-logging                   logging-fluentd-wgxpq                          1/1       Running     0          35m
openshift-logging                   logging-kibana-1-glrhs                         2/2       Running     0          36m
openshift-metrics-server            metrics-server-845b478887-jgv84                1/1       Running     0          1h
openshift-metrics                   prometheus-0                                   0/6       Pending     0          25m
openshift-metrics                   prometheus-node-exporter-4bbpn                 1/1       Running     0          25m
openshift-metrics                   prometheus-node-exporter-ftc8r                 1/1       Running     0          25m
openshift-metrics                   prometheus-node-exporter-j2gtd                 1/1       Running     0          25m
openshift-metrics                   prometheus-node-exporter-vhc2h                 1/1       Running     0          25m
openshift-monitoring                alertmanager-main-0                            3/3       Running     0          1h
openshift-monitoring                alertmanager-main-1                            3/3       Running     0          1h
openshift-monitoring                alertmanager-main-2                            3/3       Running     0          1h
openshift-monitoring                cluster-monitoring-operator-674969789d-5bjqw   1/1       Running     0          1h
openshift-monitoring                grafana-7594d8dd75-cjf4f                       2/2       Running     0          1h
openshift-monitoring                kube-state-metrics-787f69cf4d-2nbxh            3/3       Running     0          1h
openshift-monitoring                node-exporter-7zmvq                            2/2       Running     0          1h
openshift-monitoring                node-exporter-cpn62                            2/2       Running     0          1h
openshift-monitoring                node-exporter-gt64r                            2/2       Running     0          1h
openshift-monitoring                node-exporter-nxxsq                            2/2       Running     0          1h
openshift-monitoring                prometheus-k8s-0                               4/4       Running     1          1h
openshift-monitoring                prometheus-k8s-1                               4/4       Running     1          1h
openshift-monitoring                prometheus-operator-8544897d54-hwgxq           1/1       Running     0          1h
openshift-node                      sync-6f88d                                     1/1       Running     0          1h
openshift-node                      sync-ds586                                     1/1       Running     0          1h
openshift-node                      sync-tnqs7                                     1/1       Running     0          1h
openshift-node                      sync-wdjct                                     1/1       Running     0          1h
openshift-sdn                       ovs-72dd9                                      1/1       Running     0          1h
openshift-sdn                       ovs-kq695                                      1/1       Running     0          1h
openshift-sdn                       ovs-nnm8d                                      1/1       Running     0          1h
openshift-sdn                       ovs-rlt5j                                      1/1       Running     0          1h
openshift-sdn                       sdn-f5fjv                                      1/1       Running     0          1h
openshift-sdn                       sdn-jmfw9                                      1/1       Running     0          1h
openshift-sdn                       sdn-rkstw                                      1/1       Running     0          1h
openshift-sdn                       sdn-zq5ms                                      1/1       Running     0          1h
openshift-template-service-broker   apiserver-dtns4                                1/1       Running     0          32m
openshift-web-console               webconsole-5db89b6cd4-2p9sc                    1/1       Running     2          1h
5 - 查看不同类型节点的镜像
# for i in master infra node1 node2 ; do ssh $i.example.com 'docker images ; echo' ; done
REPOSITORY                                                    TAG                 IMAGE ID            CREATED             SIZE
registry.example.com/openshift3/ose-logging-fluentd           v3.11.16            715c3499714d        4 months ago        286 MB
registry.example.com/openshift3/ose-node                      v3.11.16            074bf04571e2        4 months ago        1.15 GB
registry.example.com/openshift3/ose-control-plane             v3.11.16            1f23828b535b        4 months ago        794 MB
registry.example.com/openshift3/ose-deployer                  v3.11.16            a6b0077a8dd8        4 months ago        357 MB
registry.example.com/openshift3/ose-kube-rbac-proxy           v3.11.16            5c1087872e66        4 months ago        482 MB
registry.example.com/openshift3/ose-console                   v3.11.16            325013035116        4 months ago        250 MB
registry.example.com/openshift3/ose-template-service-broker   v3.11.16            4bb11311e3eb        4 months ago        308 MB
registry.example.com/openshift3/ose-web-console               v3.11.16            81206d80b8cb        4 months ago        318 MB
registry.example.com/openshift3/ose-pod                       v3.11.16            751ff215ba5d        4 months ago        234 MB
registry.example.com/openshift3/ose-service-catalog           v3.11.16            07094eebb54e        4 months ago        306 MB
registry.example.com/openshift3/registry-console              v3.11.16            26eb64a24c85        4 months ago        268 MB
registry.example.com/openshift3/prometheus-node-exporter      v3.11.16            82e339558772        4 months ago        222 MB
registry.example.com/rhel7/etcd                               3.2.22              fef709cdf7bf        4 months ago        256 MB

REPOSITORY                                                        TAG                 IMAGE ID            CREATED             SIZE
registry.example.com/openshift3/ose-logging-fluentd               v3.11.16            715c3499714d        4 months ago        286 MB
registry.example.com/openshift3/ose-node                          v3.11.16            074bf04571e2        4 months ago        1.15 GB
registry.example.com/openshift3/ose-haproxy-router                v3.11.16            d69159fc58ec        4 months ago        374 MB
registry.example.com/openshift3/ose-deployer                      v3.11.16            a6b0077a8dd8        4 months ago        357 MB
registry.example.com/openshift3/ose-prometheus-operator           v3.11.16            4dca7b8e24af        4 months ago        577 MB
registry.example.com/openshift3/ose-kube-rbac-proxy               v3.11.16            5c1087872e66        4 months ago        482 MB
registry.example.com/openshift3/ose-prometheus-config-reloader    v3.11.16            70da44d1047a        4 months ago        505 MB
registry.example.com/openshift3/grafana                           v3.11.16            b8e75c0c5919        4 months ago        496 MB
registry.example.com/openshift3/ose-cluster-monitoring-operator   v3.11.16            8f24257f39b5        4 months ago        450 MB
registry.example.com/openshift3/ose-kube-state-metrics            v3.11.16            0ed02df2f280        4 months ago        437 MB
registry.example.com/openshift3/ose-configmap-reloader            v3.11.16            e082dd1e68f1        4 months ago        383 MB
registry.example.com/openshift3/ose-pod                           v3.11.16            751ff215ba5d        4 months ago        234 MB
registry.example.com/openshift3/ose-docker-registry               v3.11.16            0845efb9cd14        4 months ago        284 MB
registry.example.com/openshift3/prometheus-node-exporter          v3.11.16            82e339558772        4 months ago        222 MB
registry.example.com/openshift3/prometheus-alertmanager           v3.11.16            6d2601ffa89e        4 months ago        233 MB
registry.example.com/openshift3/prometheus                        v3.11.16            71f710b543cb        4 months ago        280 MB
registry.example.com/openshift3/oauth-proxy                       v3.11.16            e2cdfe500fc3        4 months ago        238 MB
registry.example.com/openshift3/metrics-hawkular-metrics          v3.11.16            e0f2bc2788bc        4 months ago        1.71 GB
registry.example.com/openshift3/metrics-heapster                  v3.11.16            4c3b09e7ec40        4 months ago        281 MB
registry.example.com/openshift3/ose-ansible-service-broker        v3.11.16            f544ede0d4d2        4 months ago        453 MB
registry.example.com/openshift3/metrics-cassandra                 v3.11.16            c04bcec14ebd        4 months ago        560 MB

REPOSITORY                                                 TAG                 IMAGE ID            CREATED             SIZE
registry.example.com/openshift3/ose-logging-fluentd        v3.11.16            715c3499714d        4 months ago        286 MB
registry.example.com/openshift3/ose-node                   v3.11.16            074bf04571e2        4 months ago        1.15 GB
registry.example.com/openshift3/ose-kube-rbac-proxy        v3.11.16            5c1087872e66        4 months ago        482 MB
registry.example.com/openshift3/ose-metrics-server         v3.11.16            af8813db7705        4 months ago        290 MB
registry.example.com/openshift3/ose-pod                    v3.11.16            751ff215ba5d        4 months ago        234 MB
registry.example.com/openshift3/prometheus-node-exporter   v3.11.16            82e339558772        4 months ago        222 MB
registry.example.com/openshift3/ose-logging-kibana5        v3.11.16            e770a1c6e536        4 months ago        751 MB
registry.example.com/openshift3/oauth-proxy                v3.11.16            e2cdfe500fc3        4 months ago        238 MB

REPOSITORY                                                 TAG                 IMAGE ID            CREATED             SIZE
registry.example.com/openshift3/ose-logging-fluentd        v3.11.16            715c3499714d        4 months ago        286 MB
registry.example.com/openshift3/ose-node                   v3.11.16            074bf04571e2        4 months ago        1.15 GB
registry.example.com/openshift3/ose-deployer               v3.11.16            a6b0077a8dd8        4 months ago        357 MB
registry.example.com/openshift3/ose-kube-rbac-proxy        v3.11.16            5c1087872e66        4 months ago        482 MB
registry.example.com/openshift3/ose-pod                    v3.11.16            751ff215ba5d        4 months ago        234 MB
registry.example.com/openshift3/prometheus-node-exporter   v3.11.16            82e339558772        4 months ago        222 MB
registry.example.com/openshift3/metrics-schema-installer   v3.11.16            94b5b0e3fae6        4 months ago        845 MB
6 - 查看 Master 监听端口
# netstat -antulop | grep LISTEN
tcp        0      0 0.0.0.0:8443            0.0.0.0:*               LISTEN      12700/openshift      off (0.00/0/0)
tcp        0      0 0.0.0.0:8444            0.0.0.0:*               LISTEN      12650/openshift      off (0.00/0/0)
tcp        0      0 192.168.122.101:2379    0.0.0.0:*               LISTEN      12680/etcd           off (0.00/0/0)
tcp        0      0 192.168.122.101:2380    0.0.0.0:*               LISTEN      12680/etcd           off (0.00/0/0)
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      26356/rpcbind        off (0.00/0/0)
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      20501/openshift      off (0.00/0/0)
tcp        0      0 10.244.0.1:53           0.0.0.0:*               LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp        0      0 0.0.0.0:8053            0.0.0.0:*               LISTEN      12700/openshift      off (0.00/0/0)
tcp        0      0 192.168.122.101:53      0.0.0.0:*               LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp        0      0 172.17.0.1:53           0.0.0.0:*               LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      992/sshd             off (0.00/0/0)
tcp        0      0 127.0.0.1:11256         0.0.0.0:*               LISTEN      20501/openshift      off (0.00/0/0)
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1382/master          off (0.00/0/0)
tcp6       0      0 :::9090                 :::*                    LISTEN      1/systemd            off (0.00/0/0)
tcp6       0      0 :::10250                :::*                    LISTEN      24344/hyperkube      off (0.00/0/0)
tcp6       0      0 :::9100                 :::*                    LISTEN      21015/node_exporter  off (0.00/0/0)
tcp6       0      0 :::111                  :::*                    LISTEN      26356/rpcbind        off (0.00/0/0)
tcp6       0      0 :::10256                :::*                    LISTEN      20501/openshift      off (0.00/0/0)
tcp6       0      0 fe80::e4ec:eeff:feec:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::bca3:6ff:fe69::53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::7cae:5cff:fe6d:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::d0d2:cdff:fe20:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::a018:1bff:fe00:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::b8bd:20ff:feb6:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::746a:65ff:fe41:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::88e8:5ff:fecb::53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 fe80::5054:ff:fe4c:2:53 :::*                    LISTEN      21745/dnsmasq        off (0.00/0/0)
tcp6       0      0 :::22                   :::*                    LISTEN      992/sshd             off (0.00/0/0)
tcp6       0      0 ::1:25                  :::*                    LISTEN      1382/master          off (0.00/0/0)