nfs 掛載 access denied

問題 在客戶端掛載nfs時， 出現

mount.nfs: access denied by server while mounting 192.168.122.199:/mnt/export_dir

解決思路

立即查看服務端日志,journalctl -xe

-- The start-up result is RESULT.
May 14 14:07:32 servera kernel: nfsd: recvfrom returned errno 104
May 14 14:13:47 servera rpc.mountd[2105]: refused mount request from 192.168.122.1 for /mnt/export_dir (/mnt/export_dir): unmatched host

出現unmatc host， 因為客戶端和服務端不在一個網段

[root@servera ~]# exportfs -va
exporting 192.168.122.199:/mnt/export_dir

因為是虛擬機， 所以修改掩碼為16

[root@servera ~]# exportfs -va
exporting 192.168.122.199/16:/mnt/export_dir

問題解決