mount.nfs：安装 192.168.8.104 时服务器拒绝访问：/mnt/sdb/var/lib/glance/images
mount.nfs: access denied by server while mounting 192.168.8.104:/mnt/sdb/var/lib/glance/images
在问这个问题之前，我在Whosebug上搜索了一下，但是答案没有用：
mount: nfs access denied by server
在我的虚拟机中，我有 sda、sdb 个硬盘。
然后VM有ips:192.168.8.101, 192.168.8.104.
当我将 sdb 的目录挂载到 /var 下的 VM 目录时：
[root@ha-node1 sdb]# mount -t nfs 192.168.8.104:/mnt/sdb/var/lib/glance/images /var/lib/glance/images
得到以下错误：
mount.nfs: access denied by server while mounting 192.168.8.104:/mnt/sdb/var/lib/glance/images
而且/mnt权限下的目录都是完美的
[root@ha-node1 sdb]# ll -d /mnt/
drwxr-xr-x. 4 root root 26 Jul 26 00:43 /mnt/
[root@ha-node1 sdb]# ll -d /mnt/sdb
drwxr-xr-x 4 root root 4096 Jul 26 10:05 /mnt/sdb
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/glance/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/glance/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/glance/images/
drwxr-xr-x 2 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/glance/images/
网络连接也正常
[root@ha-node1 sdb]# ping 192.168.8.104
PING 192.168.8.104 (192.168.8.104) 56(84) bytes of data.
64 bytes from 192.168.8.104: icmp_seq=1 ttl=64 time=0.024 ms
64 bytes from 192.168.8.104: icmp_seq=2 ttl=64 time=0.030 ms
64 bytes from 192.168.8.104: icmp_seq=3 ttl=64 time=0.032 ms
64 bytes from 192.168.8.104: icmp_seq=4 ttl=64 time=0.031 ms
NFS 服务工作正常:
[root@ha-node1 sdb]# systemctl status nfs.service
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
Active: active (exited) since Wed 2017-07-26 00:26:23 CST; 11h ago
Process: 1916 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 1786 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 1916 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/nfs-server.service
Jul 26 00:26:22 ha-node1 systemd[1]: Starting NFS server and services...
Jul 26 00:26:23 ha-node1 systemd[1]: Started NFS server and services.
在日志中我grep挂载：
[root@ha-node1 sdb]# cat /var/log/messages | grep mount
Jul 24 14:44:07 ha-node1 systemd: tmp.mount: Directory /tmp to mount over is not empty, mounting anyway.
Jul 26 00:12:08 ha-node1 systemd: Started dracut pre-mount hook.
Jul 26 00:12:11 ha-node1 systemd: Started dracut mount hook.
Jul 26 00:12:15 ha-node1 systemd: Started Remount Root and Kernel File Systems.
Jul 26 00:23:44 ha-node1 rpc.mountd[4312]: Version 1.3.0 starting
Jul 26 00:26:02 ha-node1 systemd: Started dracut pre-mount hook.
Jul 26 00:26:04 ha-node1 systemd: Started dracut mount hook.
Jul 26 00:26:08 ha-node1 systemd: Started Remount Root and Kernel File Systems.
Jul 26 00:26:22 ha-node1 rpc.mountd[1561]: Version 1.3.0 starting
Jul 26 00:43:03 ha-node1 kernel: EXT4-fs (sdb): mounted filesystem with ordered data mode. Opts: (null)
Jul 26 00:43:13 ha-node1 kernel: EXT4-fs (sdc): mounted filesystem with ordered data mode. Opts: (null)
Jul 26 10:07:03 ha-node1 rpc.mountd[1561]: refused mount request from 192.168.8.104 for /mnt/sdb/var/lib/glance/images (/): not exported
显示not exported，我试过exportfs -r，没用
谁能告诉我这件事，为什么我不能通过 NFS 将 sdb 挂载到自己的目录？
导出到外部世界的目录由linuxOS下的文件：'/etc/exports'控制。
添加：
/mnt/sdb/var/lib/glance/images *(rw,sync,no_subtree_check)
在该文件中，然后重试。这只是您的示例，访问权限应根据要求进行修改。请阅读导出手册。
在问这个问题之前，我在Whosebug上搜索了一下，但是答案没有用： mount: nfs access denied by server
在我的虚拟机中，我有 sda、sdb 个硬盘。
然后VM有ips:192.168.8.101, 192.168.8.104.
当我将 sdb 的目录挂载到 /var 下的 VM 目录时：
[root@ha-node1 sdb]# mount -t nfs 192.168.8.104:/mnt/sdb/var/lib/glance/images /var/lib/glance/images
得到以下错误：
mount.nfs: access denied by server while mounting 192.168.8.104:/mnt/sdb/var/lib/glance/images
而且/mnt权限下的目录都是完美的
[root@ha-node1 sdb]# ll -d /mnt/
drwxr-xr-x. 4 root root 26 Jul 26 00:43 /mnt/
[root@ha-node1 sdb]# ll -d /mnt/sdb
drwxr-xr-x 4 root root 4096 Jul 26 10:05 /mnt/sdb
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/glance/
drwxr-xr-x 3 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/glance/
[root@ha-node1 sdb]# ll -d /mnt/sdb/var/lib/glance/images/
drwxr-xr-x 2 root root 4096 Jul 26 10:05 /mnt/sdb/var/lib/glance/images/
网络连接也正常
[root@ha-node1 sdb]# ping 192.168.8.104
PING 192.168.8.104 (192.168.8.104) 56(84) bytes of data.
64 bytes from 192.168.8.104: icmp_seq=1 ttl=64 time=0.024 ms
64 bytes from 192.168.8.104: icmp_seq=2 ttl=64 time=0.030 ms
64 bytes from 192.168.8.104: icmp_seq=3 ttl=64 time=0.032 ms
64 bytes from 192.168.8.104: icmp_seq=4 ttl=64 time=0.031 ms
NFS 服务工作正常:
[root@ha-node1 sdb]# systemctl status nfs.service
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
Active: active (exited) since Wed 2017-07-26 00:26:23 CST; 11h ago
Process: 1916 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 1786 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 1916 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/nfs-server.service
Jul 26 00:26:22 ha-node1 systemd[1]: Starting NFS server and services...
Jul 26 00:26:23 ha-node1 systemd[1]: Started NFS server and services.
在日志中我grep挂载：
[root@ha-node1 sdb]# cat /var/log/messages | grep mount
Jul 24 14:44:07 ha-node1 systemd: tmp.mount: Directory /tmp to mount over is not empty, mounting anyway.
Jul 26 00:12:08 ha-node1 systemd: Started dracut pre-mount hook.
Jul 26 00:12:11 ha-node1 systemd: Started dracut mount hook.
Jul 26 00:12:15 ha-node1 systemd: Started Remount Root and Kernel File Systems.
Jul 26 00:23:44 ha-node1 rpc.mountd[4312]: Version 1.3.0 starting
Jul 26 00:26:02 ha-node1 systemd: Started dracut pre-mount hook.
Jul 26 00:26:04 ha-node1 systemd: Started dracut mount hook.
Jul 26 00:26:08 ha-node1 systemd: Started Remount Root and Kernel File Systems.
Jul 26 00:26:22 ha-node1 rpc.mountd[1561]: Version 1.3.0 starting
Jul 26 00:43:03 ha-node1 kernel: EXT4-fs (sdb): mounted filesystem with ordered data mode. Opts: (null)
Jul 26 00:43:13 ha-node1 kernel: EXT4-fs (sdc): mounted filesystem with ordered data mode. Opts: (null)
Jul 26 10:07:03 ha-node1 rpc.mountd[1561]: refused mount request from 192.168.8.104 for /mnt/sdb/var/lib/glance/images (/): not exported
显示not exported，我试过exportfs -r，没用
谁能告诉我这件事，为什么我不能通过 NFS 将 sdb 挂载到自己的目录？
导出到外部世界的目录由linuxOS下的文件：'/etc/exports'控制。 添加： /mnt/sdb/var/lib/glance/images *(rw,sync,no_subtree_check) 在该文件中，然后重试。这只是您的示例，访问权限应根据要求进行修改。请阅读导出手册。