Câu 3: EX200: Red Hat Certified System Administrator (RHCSA)

SIMULATION -Add a swap partition. Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.

1. A. As Example based on RH documentation for Extending Swap on an LVM2 Logical Volume Disable swapping for the associated logical volume: # swapoff -v /dev/VolGroup00/LogVol01 Resize the LVM2 logical volume by 2 GB: # lvresize /dev/VolGroup00/LogVol01 -L +2G Format the new swap space: # mkswap /dev/VolGroup00/LogVol01 Enable the extended logical volume: # swapon -v /dev/VolGroup00/LogVol01 To test if the swap logical volume was successfully extended and activated, inspect active swap space: $ cat /proc/swaps $ free -h ------------------------------------------------------- swapon sudo gdisk /dev/sdb -> ;n; +500M; 8200; w; y sudo partprobe lsblk sudo mkswap /dev/sdb2 lsblk -f sudo vim /etc/fstab -> /dev/sdb2 none swap defaults 0 0 sudo systemctl daemon-reload mount -a reboot swapon NAME TYPE SIZE USED PRIO /dev/dm-1 partition 3.8G 0B -2 /dev/sdb2 partition 500M 0B -3 ------------------------------------------------------- sudo parted /dev/sdb print (partition table unknown) sudo parted /dev/sdb mklabel gpt sudo parted /dev/sdb mkpart swap1 linux-swap 2084s 501M sudo parted /dev/sdb print sudo udevadm settle sudo mkswap /dev/sdb sudo vim /etc/fstab UUID=XXXXXXXXXXXXXXXXXXX swap swap defaults 0 0 sudo systemctl daemon-reload sudo swapon -a sudo swapon --show — đáp án hiện tại