Chapter 5: Advanced Linux Administration

1. The Linux kernel.
2. systemd-udevd.
3. ls /sys/class/net and ip link show.
4. The Azure agent for Linux.
5. ls /sys/class/net and lsblk. The lsscsi command can be helpful as well.
6. It is a good idea to use RAID0 to improve performance and allow improved throughput compared to using just a single disk.
7. At the filesystem level, using B-Tree File System (BTRFS) or the Z File System (ZFS), or at the block level using Linux Software RAID (mdadm) or Logical Volume Manager (LVM) (not covered in this chapter).
8. Create the RAID, format it, and make a mount point:

   mdadm --create /dev/md127 --level 0 --raid-devices 3 \    /dev/sd{c,d,e}mkfs.xfs -L myraid /dev/md127 mkdir /mnt/myraid

   Create a unit file, /etc/systemd/system/mnt-myraid.mount:

   [Unit]Description = myRaid volume [Mount]Where = /mnt/myraid What = /dev/md127 Type = xfs [Install]WantedBy = local-fs.mount

   Start and enable it at boot:

   systemctl enable --now mnt-myraid...