Lesson 5.3: Configure autofs
Autofs
Although network devices can be mounted at boot using /etc/fstab, mounts configured this way consume additional resources because they are always mounted and therefore don't scale well. autofs works with the kernel to mount drives only when they are accessed, improving performance.
# Installing required package [root@client ~]# yum -y install autofs # Configure autofs configuration file [root@client ~]# vim /etc/auto.master [root@client ~]# tail -1 /etc/auto.master /remote/data /etc/auto.nfs --timeout=300 # Create another file with filename (auto.<something>) and write the folder and mount [root@client ~]# vim /etc/auto.nfs [root@client ~]# cat /etc/auto.nfs support -rw,sync 192.168.205.100:/pis/support # Restart autofs service [root@client ~]# systemctl restart autofs # Support Mount has not been shown, as it is not used currently [root@client ~]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 4.0M 0 4.0M 0% /dev tmpfs 1.8G 0 1.8G 0% /dev/shm tmpfs 717M 9.5M 708M 2% /run efivarfs 256K 33K 224K 13% /sys/firmware/efi/efivars /dev/mapper/cs-root 17G 5.1G 12G 31% / /dev/nvme0n2p1 960M 39M 922M 5% /ribik /dev/nvme0n1p2 960M 483M 478M 51% /boot /dev/nvme0n1p1 599M 7.0M 592M 2% /boot/efi tmpfs 1.0M 0 1.0M 0% /run/stratisd/ns_mounts tmpfs 359M 92K 359M 1% /run/user/0 192.168.205.100:/pis/training 17G 14G 3.4G 80% /mnt/nfsdata/nfstraining 192.168.205.100:/pis/development 17G 14G 3.4G 80% /mnt/nfsdata/nfsdevelopment [root@client ~]# cd /remote/data/ [root@client data]# ls [root@client data]# # Does not show folder when ls , but can do cd [root@client data]# cd support # Now as support folder is used , it shows mounted on df -h [root@client support]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 4.0M 0 4.0M 0% /dev tmpfs 1.8G 0 1.8G 0% /dev/shm tmpfs 717M 9.5M 708M 2% /run efivarfs 256K 33K 224K 13% /sys/firmware/efi/efivars /dev/mapper/cs-root 17G 5.1G 12G 31% / /dev/nvme0n2p1 960M 39M 922M 5% /ribik /dev/nvme0n1p2 960M 483M 478M 51% /boot /dev/nvme0n1p1 599M 7.0M 592M 2% /boot/efi tmpfs 1.0M 0 1.0M 0% /run/stratisd/ns_mounts tmpfs 359M 92K 359M 1% /run/user/0 192.168.205.100:/pis/training 17G 14G 3.4G 80% /mnt/nfsdata/nfstraining 192.168.205.100:/pis/development 17G 14G 3.4G 80% /mnt/nfsdata/nfsdevelopment 192.168.205.100:/pis/support 17G 14G 3.4G 80% /remote/data/support