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如何限制 NFS 对 SVM 根卷的访问

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适用场景

ONTAP 9

描述

  • 默认情况下,创建 SVM 时,根卷配置为755权限。
  • 这意味着:
    • 用户root (0)具有以下有效权限7, 或者Full Control
    • 其他权限级别设置为5,即Read & Execute
  • 配置此项后,所有访问 SVM 根卷的用户都可以列出并读取挂载在 SVM 根卷下的连接点。
  • 此外,使用System Managervserver setup命令允许用户访问 SVM 根目录。 
示例:

cluster::> vserver export-policy rule show -vserver nfs_svm -policyname default -instance
 
                   Vserver: nfs_svm 
                 Policy Name: default 
                 Rule Index: 1 
               Access Protocol: any 
Client Match Hostname, IP Address, Netgroup, or Domain: 0.0.0.0/0 
               RO Access Rule: any 
               RW Access Rule: any 
User ID To Which Anonymous Users Are Mapped: 65534 
          Superuser Security Types: none 
        Honor SetUID Bits in SETATTR: true 
          Allow Creation of Devices: true 

  • 例如,如果 SVM 有 3 个数据卷,分别名为“nfs4”、“ntfs”和“unix”,
  • 则所有卷都将挂载在“/”下,并可以使用ls任何访问该挂载的用户都可以执行该命令。 

示例:

# mount | grep /mnt 
x.x.x.e:/ on /mnt type nfs (rw,nfsvers=3,addr=x.x.x.e) 
# cd /mnt 
# ls 
nfs4  ntfs  unix 

 

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