106 lines
4.7 KiB
Markdown
106 lines
4.7 KiB
Markdown
# synology-nfs-mount-tools
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This is a repo that contains tools/documentations to help nfs mounting configuration in Synology
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## Log
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### 2020-07-08
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Due to issue from idmapping, NFS customization on Synology is given up. I will directly use Synology's official NAS setting in WebGUI. And set all visitor either as admin or guest
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### 2020-07-09
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Used one day trying to solve the problem that I cannot write to `/volume1/homes/Jason`, found the problem is from my side. When I created `/mnt/synology_homes_Jason`, I didn't make it `chmod 777`. BAGA!
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Anyway, [Applying Default UNIX Permissions](https://www.synology.com/en-us/knowledgebase/DSM/help/FileStation/settings) and [How to manage ACL settings on your Synology NAS](https://www.synology.com/en-global/knowledgebase/DSM/tutorial/File_Sharing/How_to_manage_ACL_settings_on_your_Synology_NAS) are good references
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## 0. Knowledge Center: How to config NFS server and client
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Synology's DSM WebGUI has capability to set NFS configuration to allow Linux to access files on Synology NAS, follow [tutorial: How to access files on Synology NAS within the local network (NFS)](https://www.synology.com/en-us/knowledgebase/DSM/tutorial/File_Sharing/How_to_access_files_on_Synology_NAS_within_the_local_network_NFS)
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But the GUI's feature is limited. We need more fine tuning. Following [NFS: Overview and Gotchas](http://www.troubleshooters.com/linux/nfs.htm), we can set Synology properly. (If the URL is broken, we can refer to [NFS: Overview and Gotchas in repo](/source/NFS_Overview/NFS\ Overview\ and\ Gotchas.htm)
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### 0.1 Summary of how to configure NFS server
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Configuring an NFS server is just placing a line in `/etc/exports` file. The line's general syntax is:
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```
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directory_being_shared subnet_allowed_to_access(options)
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```
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There are 2 kinds of options:
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* General options (ignored here)
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* User ID Mapping options (need to be mentioned here)
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We want to make directories accessible as if the incoming request was from that user or that group, which is done by combining `all_squash` option with `anonuid` and `anongid` options.
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e.g.
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```
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/volume1/homes 192.168.1.85(rw,sync,no_wdelay,crossmnt,all_squash,insecure_locks,sec=sys,anonuid=1025,anongid=100)
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```
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where:
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* `/volume1/homes` is the directory to be shared
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* `192.168.1.85` is the ip address of client
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* `rw` is Read/Write
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* `async` is for fast access. `sync` is for safer access
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* `no_wdelay` is "Write disk as soon as possible"
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* `anonuid=1025` is uid of "guest"
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* `anongid=100` is gid of "guest/user"
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### 0.2 Summary of how to configure client
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```
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mount -t nfs -o rw 192.168.100.85:/data/altamonte /mnt/test
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```
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## 1. Current solution for mapping Synology NFS to Ubuntu (desktop or laptop)
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Due to limitation of NFS4.0, idmapping is too hard (mismatch between server and client's uid/gid) to configure at server side, and kerberos authentication is too hard to setup.
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This [youtube video](https://www.youtube.com/watch?v=mroM6_koNdw) is the best explanation for me.
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The only solution for ubuntu (Desktop or Laptop) is NFS+`chown`
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1. Follow Synology official guide + youtube to set NFS permission
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2. mount volume to client
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3. After writing files, remember to chown afterward
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## 2. Current solution for mapping Synology NFS to Proxmox
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For plex server:
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1. Follow Synology official guide + youtube to set NFS permission
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1. add ip address of Proxmox only, no need to add ip address of the LXC within it)
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2. Choose squash as "map all user to admin"
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2. Mount NFS to Proxmox by go to Datacenter->Storage->Add->NFS, choose different content types.
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3. Modify LXC config file after creation of LXC to add mounting point
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1. Following [Bind Mount Points](https://pve.proxmox.com/wiki/Linux_Container#_bind_mount_points) to setup bind mount point in config file (in `/etc/pve/lxc`)
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e.g. 102.conf
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```
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arch: amd64
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cores: 2
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hostname: plexserver
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memory: 1024
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mp0: /mnt/pve/NAS_media,mp=/mnt/nas_media
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net0: name=eth0,bridge=vmbr0,firewall=1,hwaddr=F6:7A:13:86:C5:FD,ip=dhcp,ip6=dhcp,type=veth
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ostype: ubuntu
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rootfs: local-lvm:vm-102-disk-0,size=8G
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swap: 512
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unprivileged: 1
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```
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## Reference
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* [NFS: Overview and Gotchas](http://www.troubleshooters.com/linux/nfs.htm)
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* [How to setup NFS server and client](https://codeyarns.com/2013/03/17/how-to-setup-nfs-server-and-client/)
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* [Applying Default UNIX Permissions](https://www.synology.com/en-us/knowledgebase/DSM/help/FileStation/settings)
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* [How to manage ACL settings on your Synology NAS](https://www.synology.com/en-global/knowledgebase/DSM/tutorial/File_Sharing/How_to_manage_ACL_settings_on_your_Synology_NAS)
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file `video/proxmox_add_nfs.webm` is downloaded from [proxmox 添加 nfs 存储 完美解决 空间不足 虚拟机 备份 容灾 proxmox add nfs](https://www.youtube.com/watch?v=mroM6_koNdw)
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