What is swap?
- Swap is RAM that is emulated on disk
- All Linux systems should have at least some swap. but when installing Kubernetes you will disable it. Swapoff
- The amount of swap depends on the use of the server
Create swap
- Swap can be created on any block device, including swap files
- Set partition type to linux-swap
- After creating the swap partition, use mkswap to create the swap FS
- Activate using swapon
fdsik partition#option n and t then w
mkswap partition
swapon partition
/etc/fstab
mount -a#create the partiton
fdisk /dev/sda
n
7
+2G
p
#format the partiton
t
7
L
swap or 82
p
#change the partiton order not necessary
m
x
m
f
r
p
#write the changes
w
reboot
#after the reboot
lsblk
fdisk -l /dev/sda
free -m
mkswap /dev/sda7
swapon /dev/sda7
free -m
#make the swap persistent
vim /etc/fstab
