7.2. 配置 ceph-immutable-object-cache 守护进程

流程

1. 启用 RBD 共享只读父镜像缓存。在 /etc/ceph/ceph.conf 文件的 [client] 部分添加以下参数：

   示例

   [root@ceph-host01 ~]# vi /etc/ceph/ceph.conf
   
   [client]
   rbd parent cache enabled = true
   rbd plugins = parent_cache

   Copy to Clipboard Toggle word wrap

   重启集群。

2. 安装 ceph-immutable-object-cache 软件包：

   示例

   [root@ceph-host1 ~]# dnf install ceph-immutable-object-cache

   Copy to Clipboard Toggle word wrap

3. 创建唯一的 Ceph 用户 ID，密钥环：

   语法

   ceph auth get-or-create client.ceph-immutable-object-cache.USER_NAME mon 'profile rbd' osd 'profile rbd-read-only'

   Copy to Clipboard Toggle word wrap

   示例

   [root@ceph-host1 ~]# ceph auth get-or-create client.ceph-immutable-object-cache.user mon 'profile rbd' osd 'profile rbd-read-only'
   
   [client.ceph-immutable-object-cache.user]
   	key = AQCVPH1gFgHRAhAAp8ExRIsoxQK4QSYSRoVJLw==

   Copy to Clipboard Toggle word wrap

   复制此密钥环。

4. 在 /etc/ceph 目录中，创建一个文件并粘贴密钥环：

   示例

   [root@ceph-host1 ]# vi /etc/ceph/ceph.client.ceph-immutable-object-cache.user.keyring
   
   [client.ceph-immutable-object-cache.user]
   	key = AQCVPH1gFgHRAhAAp8ExRIsoxQK4QSYSRoVJLw

   Copy to Clipboard Toggle word wrap

5. 启用守护进程：

   语法

   systemctl enable ceph-immutable-object-cache@ceph-immutable-object-cache.USER_NAME

   Copy to Clipboard Toggle word wrap

   将 USER_NAME 指定为守护进程实例。

   示例

   [root@ceph-host1 ~]# systemctl enable ceph-immutable-object-cache@ceph-immutable-object-cache.user
   
   Created symlink /etc/systemd/system/ceph-immutable-object-cache.target.wants/ceph-immutable-object-cache@ceph-immutable-object-cache.user.service  /usr/lib/systemd/system/ceph-immutable-object-cache@.service.

   Copy to Clipboard Toggle word wrap

6. 启动 ceph-immutable-object-cache 守护进程：

   语法

   systemctl start ceph-immutable-object-cache@ceph-immutable-object-cache.USER_NAME

   Copy to Clipboard Toggle word wrap

   示例

   [root@ceph-host1 ~]# systemctl start ceph-immutable-object-cache@ceph-immutable-object-cache.user

   Copy to Clipboard Toggle word wrap