centos 新建swap区文件
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一. 相当详细且流程完整,(推荐阅读)
在centos7上新建swap区
https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-7
二. centos官网
转:https://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-swap-creating-file.html
5.2.3. Creating a Swap File
To add a swap file:
-
Determine the size of the new swap file in megabytes and multiply by 1024 to determine the number of blocks. For example, the block size of a 64 MB swap file is 65536.
-
At a shell prompt as root, type the following command with
count
being equal to the desired block size:dd if=/dev/zero of=/swapfile bs=1024 count=65536
-
Setup the swap file with the command:
mkswap /swapfile
-
To enable the swap file immediately but not automatically at boot time:
swapon /swapfile
-
To enable it at boot time, edit
/etc/fstab
to include the following entry:/swapfile swap swap defaults 0 0
The next time the system boots, it enables the new swap file.
-
After adding the new swap file and enabling it, verify it is enabled by viewing the output of the command
cat /proc/swaps
orfree
.
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