Initial Setup for RHEL9（RHEL9初期設定）

Initial Setup for RHEL9

1. Basic Configuration

Change Time Zone

timedatectl
timedatectl set-timezone Asia/Tokyo

Disable Firewall

systemctl stop firewalld
systemctl disable firewalld
systemctl status firewalld

Disable SELinux

getenforce
grubby --update-kernel ALL --args selinux=0
getenforce
reboot

---

2. Adding an Additional Disk (Without LVM)

Verify the Additional Target Disk

lsblk -o NAME,HCTL,SIZE,MOUNTPOINT
ls -l /dev/disk/azure/scsi1/

Create GPT Partition Table

parted -s /dev/sdc mklabel gpt

Allocate Entire Disk to a Single Partition (For XFS)

parted -s -a optimal /dev/sdc mkpart primary xfs 0% 100%

Create XFS Filesystem on the Partition

mkfs.xfs -f /dev/sdc1

Create Mount Point

mkdir -p /data01

Configure Persistent Mount via UUID in fstab

UUID=$(sudo blkid -s UUID -o value /dev/sdc1)
echo "UUID=$UUID /data01 xfs defaults,nofail 0 2" | sudo tee -a /etc/fstab

Apply Mount Settings

systemctl daemon-reload
mount -a
df -h