1.11. 迁移 RBD 镜像守护进程

流程

1. 在 Ceph 客户端节点上创建一个用户：

   语法

   ceph auth get client.PRIMARY_CLUSTER_NAME -o /etc/ceph/ceph.PRIMARY_CLUSTER_NAME.keyring

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   示例

   [root@rbd-client-site-a ~]# ceph auth get client.rbd-mirror.site-a -o /etc/ceph/ceph.client.rbd-mirror.site-a.keyring

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2. 更改 /etc/ceph 目录中的 auth 文件中的用户名：

   示例

   [client.rbd-mirror.rbd-client-site-a]
       key = AQCbKbVg+E7POBAA7COSZCodvOrg2LWIFc9+3g==
       caps mds = "allow *"
       caps mgr = "allow *"
       caps mon = "allow *"
       caps osd = "allow *"

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3. 导入 auth 文件以添加相关权限：

   语法

   ceph auth import -i PATH_TO_KEYRING

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   示例

   [root@rbd-client-site-a ~]# ceph auth import -i /etc/ceph/ceph.client.rbd-mirror.rbd-client-site-a.keyring

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4. 检查 RBD 镜像节点的服务名称：

   示例

   [root@rbd-client-site-a ~]# systemctl list-units --all
   
   systemctl stop ceph-rbd-mirror@rbd-client-site-a.service
   systemctl disable ceph-rbd-mirror@rbd-client-site-a.service
   systemctl reset-failed ceph-rbd-mirror@rbd-client-site-a.service
   systemctl start ceph-rbd-mirror@rbd-mirror.rbd-client-site-a.service
   systemctl enable ceph-rbd-mirror@rbd-mirror.rbd-client-site-a.service
   systemctl status ceph-rbd-mirror@rbd-mirror.rbd-client-site-a.service

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5. 将 rbd-mirror 节点添加到 /etc/ansible/hosts 文件中：

   示例

   [rbdmirrors]
   ceph.client.rbd-mirror.rbd-client-site-a

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