15.3. 使用 cephadm_bootstrap 和 cephadm_registry_login 模块引导存储集群

流程

1. 登录 Ansible 管理节点。

2. 进入 Ansible 管理节点上的 /usr/share/cephadm-ansible 目录：

   示例

   [ceph-admin@admin ~]$ cd /usr/share/cephadm-ansible

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3. 创建 hosts 文件并添加主机、标签和监控存储集群中第一个主机的 IP 地址：

   语法

   sudo vi INVENTORY_FILE
   
   HOST1 labels="['LABEL1', 'LABEL2']"
   HOST2 labels="['LABEL1', 'LABEL2']"
   HOST3 labels="['LABEL1']"
   
   [admin]
   ADMIN_HOST monitor_address=MONITOR_IP_ADDRESS labels="['ADMIN_LABEL', 'LABEL1', 'LABEL2']"

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   示例

   [ceph-admin@admin cephadm-ansible]$ sudo vi hosts
   
   host02 labels="['mon', 'mgr']"
   host03 labels="['mon', 'mgr']"
   host04 labels="['osd']"
   host05 labels="['osd']"
   host06 labels="['osd']"
   
   [admin]
   host01 monitor_address=10.10.128.68 labels="['_admin', 'mon', 'mgr']"

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4. 运行 preflight playbook：

   语法

   ansible-playbook -i INVENTORY_FILE cephadm-preflight.yml --extra-vars "ceph_origin=rhcs"

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   示例

   [ceph-admin@admin cephadm-ansible]$ ansible-playbook -i hosts cephadm-preflight.yml --extra-vars "ceph_origin=rhcs"

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5. 创建 playbook 以启动集群：

   语法

   sudo vi PLAYBOOK_FILENAME.yml
   
   ---
   - name: NAME_OF_PLAY
     hosts: BOOTSTRAP_HOST
     become: USE_ELEVATED_PRIVILEGES
     gather_facts: GATHER_FACTS_ABOUT_REMOTE_HOSTS
     tasks:
       -name: NAME_OF_TASK
        cephadm_registry_login:
          state: STATE
          registry_url: REGISTRY_URL
          registry_username: REGISTRY_USER_NAME
          registry_password: REGISTRY_PASSWORD
   
       - name: NAME_OF_TASK
         cephadm_bootstrap:
           mon_ip: "{{ monitor_address }}"
           dashboard_user: DASHBOARD_USER
           dashboard_password: DASHBOARD_PASSWORD
           allow_fqdn_hostname: ALLOW_FQDN_HOSTNAME
           cluster_network: NETWORK_CIDR

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   示例

   [ceph-admin@admin cephadm-ansible]$ sudo vi bootstrap.yml
   
   ---
   - name: bootstrap the cluster
     hosts: host01
     become: true
     gather_facts: false
     tasks:
       - name: login to registry
         cephadm_registry_login:
           state: login
           registry_url: registry.redhat.io
           registry_username: user1
           registry_password: mypassword1
   
       - name: bootstrap initial cluster
         cephadm_bootstrap:
           mon_ip: "{{ monitor_address }}"
           dashboard_user: mydashboarduser
           dashboard_password: mydashboardpassword
           allow_fqdn_hostname: true
           cluster_network: 10.10.128.0/28

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6. 运行 playbook：

   语法

   ansible-playbook -i INVENTORY_FILE PLAYBOOK_FILENAME.yml -vvv

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   示例

   [ceph-admin@admin cephadm-ansible]$ ansible-playbook -i hosts bootstrap.yml -vvv

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