CentOS increases swap partition size

From: http://www.centoscn.com/CentOS/Intermediate/2014/0222/2446.html

1. View current partition status

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1. Free-m

2. Increase swap size, around 2G

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1. DD If=/dev/zero Of=/var/swap bs=1024 count=2048000

3. Setting up Swap files

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1. Mkswap/var/swap

4. Activate the swap-enabled partition now

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1. Swapon/var/swap

5. Add system boot-time self-boot run

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1. Vi/etc/fstab

Add a row

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1. /var/swap swap swap defaults 0 0

6. Recovering Swap Space

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1. Swapoff/var/swap

7. Recovering from the file system

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1. Rm/var/swap

CentOS increases swap partition size