NFS : NFS 4 ACL Tool2023/11/13 |
It's possible to set ACL on NFS(v4) filesystem to install NFS 4 ACL tool.
Usage is mostly the same with POSIX ACL Tool. |
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[1] | Install NFS 4 ACL Tool on NFS clients that mounts NFS share with NFSv4. |
[root@node01 ~]# dnf -y install nfs4-acl-tools
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[2] | On this example, it shows usage examples on the environment like follows. |
[root@node01 ~]# df -hT /mnt Filesystem Type Size Used Avail Use% Mounted on dlp.srv.world:/home/nfsshare nfs4 15G 1.8G 14G 12% /mnt[root@node01 ~]# ll /mnt total 4 drwx------. 2 root root 6 Nov 13 10:22 testdir -rw-------. 1 root root 865 Nov 13 10:22 testfile.txt |
[3] | Show ACL of a file or directory on NFSv4 filesystem. |
[root@node01 ~]# nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwatTcCy A::GROUP@:tcy A::EVERYONE@:tcy[root@node01 ~]# nfs4_getfacl /mnt/testdir # file: /mnt/testdir A::OWNER@:rwaDxtTcCy A::GROUP@:tcy A::EVERYONE@:tcy # each entry means like follows
# ACE = Access Control Entry # (ACE Type):(ACE Flags):(ACE Principal):(ACE Permissions) |
Description
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[4] | Add or Delete ACE. |
[root@node01 ~]# ll /mnt total 4 drwx------. 2 root root 6 Nov 13 10:57 testdir -rw-------. 1 root root 887 Nov 13 10:58 testfile.txt[root@node01 ~]# nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwatTcCy A::GROUP@:tcy A::EVERYONE@:tcy # add generic read/execute for [fedora] user to [/mnt/testfile.txt] file [root@node01 ~]# nfs4_setfacl -a A::fedora@srv.world:rxtncy /mnt/testfile.txt
nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt D::OWNER@:x A::OWNER@:rwatTcCy A::1000:rxtcy A::GROUP@:tcy A::EVERYONE@:tcy # verify with [fedora] user [fedora@node01 ~]$ ll /mnt total 4 drwx------. 2 root root 6 Nov 13 10:57 testdir -rw-r-x---. 1 root root 887 Nov 13 10:58 testfile.txt
[fedora@node01 ~]$ cat /mnt/testfile.txt test file # delete generic read/execute for [fedora] user from [/mnt/testfile.txt] file [root@node01 ~]# nfs4_setfacl -x A::1000:rxtcy /mnt/testfile.txt
nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwatTcCy A::GROUP@:tcy A::EVERYONE@:tcy |
[5] | Edit ACL directly. |
[root@node01 ~]# nfs4_setfacl -e /mnt/testfile.txt
# $EDITOR is run and enter to ACL editing
# default $EDITOR on Fedora is [vim], if $EDITOR=null, default is set to [vi]
## Editing NFSv4 ACL for file: /mnt/testfile.txt
A::OWNER@:rwatTcCy
A::GROUP@:tcy
A::EVERYONE@:tcy
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[6] | Add ACE from a file. |
A::fedora@srv.world:RX A::redhat@srv.world:RWX # add ACL from the file [root@node01 ~]# nfs4_setfacl -A acl.txt /mnt/testfile.txt
nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt D::OWNER@:x A::OWNER@:rwatTcCy A::1000:rxtcy A::1001:rwaxtcy A::GROUP@:tcy A::EVERYONE@:tcy |
[7] | Replace current ACE to new ACE. |
A::OWNER@:rwaxtTcCy A::GROUP@:tcy A::EVERYONE@:tcy # replace ACL from the file [root@node01 ~]# nfs4_setfacl -S acl.txt /mnt/testfile.txt
nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwaxtTcCy A::GROUP@:tcy A::EVERYONE@:tcy |
[8] | Replace specific ACE to new ACE. |
[root@node01 ~]# nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwaxtTcCy A::GROUP@:tcy A::EVERYONE@:tcy # replace EVERYONE's ACE to read/execute [root@node01 ~]# nfs4_setfacl -m A::EVERYONE@:tcy A::EVERYONE@:RX /mnt/testfile.txt
nfs4_getfacl /mnt/testfile.txt # file: /mnt/testfile.txt A::OWNER@:rwaxtTcCy A::GROUP@:rxtcy A::EVERYONE@:rxtcy |
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