How to configure AutoFS to mount user home directories from NFS server

`## On the NFS server`

[root@rhel7server1 home]# ls -alh /home total 0 drwxr-xr-x. 5 root root 49 Jun 29 11:11 . dr-xr-xr-x. 17 root root 224 Jun 11 12:41 .. drwx------. 3 user1 user1 78 Jun 29 11:11 user1 drwx------. 3 user2 user2 78 Jun 29 11:11 user2 [root@rhel7server1 home]# id user1 uid=1001(user1) gid=1001(user1) groups=1001(user1) [root@rhel7server1 home]# id user2 uid=1002(user2) gid=1002(user2) groups=1002(user2) ## create some files for each of these users at the NFS server side home dir root@rhel7server1 ~]# su - user1 [user1@rhel7server1 ~]$ echo "created at server" > user1.txt [user1@rhel7server1 ~]$ ll total 4 -rw-rw-r--. 1 user1 user1 18 Jun 29 11:30 user1.txt [root@rhel7server1 ~]# su - user2 [user2@rhel7server1 ~]$ echo "created at server" > user2.txt [user2@rhel7server1 ~]$ ll total 4 -rw-rw-r--. 1 user2 user2 18 Jun 29 11:30 user2.txt ## install nfs-utils package
[root@rhel7server1 ~]# yum -y install nfs-utils ## check selinux settings for NFS[root@rhel7server1 ~]# getsebool -a | grep nfs_export nfs_export_all_ro --> on nfs_export_all_rw --> on ## if not set to on, set it, otherwise skip this step [root@rhel7server1 ~]# setsebool -P nfs_export_all_ro=1 nfs_export_all_rw=1
## add firewall rules [root@rhel7server1 ~]# firewall-cmd --permanent --add-service=nfs success [root@rhel7server1 ~]# firewall-cmd --reload success

## enable and start the services [root@rhel7server1 ~]# systemctl enable rpcbind [root@rhel7server1 ~]# systemctl enable nfs-server Created symlink from /etc/systemd/system/multi-user.target.wants/nfs-server.service to /usr/lib/systemd/system/nfs-server.service. [root@rhel7server1 ~]# systemctl start rpcbind [root@rhel7server1 ~]# systemctl start nfs-server
## define and export the dir to be shared [root@rhel7server1 ~]# vi /etc/exports

/etc/exports

/home   192.168.0.20(rw,no_root_squash)

[root@rhel7server1 ~]# exportfs -avr exporting 192.168.0.20:/home

`## On NFS Client side`



            ## install nfs-utils and autofs packages



            [root@rhel7client1 etc]# yum install -y nfs-utils autofs

            

            

            ## edit the autofs master configuration file



            

            
                
                    
                        /etc/auto.master
                    
                    
                        /home /etc/home.map
                    
                
            
            

            

            ## create the autofs map file

            

            
                
                    
                        /etc/home.map
                    
                    
                        *  -fstype=nfs,rw,nosuid,soft  rhel7server1:/home/&
                    
                
            
            

            

            ## enable and start NFS client



            [root@rhel7client1 etc]# systemctl enable rpcbind

            

            [root@rhel7client1 etc]# systemctl start rpcbind

            

            

            ## enable and start autofs

            

            [root@rhel7client1 etc]# systemctl enable autofs

            

            [root@rhel7client1 etc]# systemctl start autofs

            

            

            ## Assuming that the same users exist in the client machine with same uid,gid as that in the NFS server,

            ## it will automount the home directories on first access

            ## check the home directory for user1, notice it is now mounted from NFS server

            

            [root@rhel7client1 etc]# su - user1

            Last login: Mon Jun 29 11:47:42 +08 2020 on pts/0

            

            [user1@rhel7client1 ~]$ df /home/user1

            Filesystem               1K-blocks  Used Available Use% Mounted on

            rhel7server1:/home/user1  10475520 33024  10442496   1% /home/user1

            

            [user1@rhel7client1 ~]$ ll

            total 4

            -rw-rw-r--. 1 user1 user1 18 Jun 29 11:30 user1.txt

            

            [user1@rhel7client1 ~]$ cat user1.txt

            created at server

            

            [user1@rhel7client1 ~]$ echo "created at client" >> user1-clientside.txt

            

            [user1@rhel7client1 ~]$ ll

            total 8

            -rw-rw-r--. 1 user1 user1 18 Jun 29 11:49 user1-clientside.txt

            -rw-rw-r--. 1 user1 user1 18 Jun 29 11:30 user1.txt