星期三, 11月 08, 2017

Mounting NFS datastores with different IP address one different ESXi Hosts 讓不同的ESXi host使用不同的IP掛載同一個NFS Target

I have a small vSphere environment, the NAS has 4 NIC ports, 3 ESXi client direct connect to NAS without switch/hub by different IPs. vCenter thake them as different NFS datastore, because of different UUIDs.
A UUID mismatch between two datastores occurs because the UUID is based on a hash of the NFS Server and Path, as seen by running esxcfg-nas. If you have specified the NFS server information using different methods on different hosts, then the hash value, and ultimately the UUIDs will be different.
我有一個小型的vSphere環境,其中1座4埠網路NAS和3台ESXi使用不同網段IP直接連接到NAS。但是vCenter認為它們是不同的NFS datastore,因為產生的hash和UUID不同,詳見 VMware KB1005930
山不轉路轉,路不轉人轉。 ESXi底層也是Linux,所以網路查詢host對應ip時會先找 /etc/hosts 。 用ssh 登入console,用vi修改 /etc/hosts 加上類似以下這行:
172.16.1.1   nas
每一台 ESXi 都要做,用對應的IP設定在 /etc/hosts ,使用hostname去mount NFS,收工!

Use ssh login into console, edit /etc/hosts by vi. Every ESXi host use correspond IP, then mount NFS storage by hostname.

如果現有VM在上面,必須在ESXi host先取消註冊才能重新掛載。

If there are VMs on a NFS datastore, you have to unregister them from ESXi host.

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