Linode Custom Linode Swap size?

Linode uses dedicated disk partition images for swap hence default max size of 511MB.

Provided you have disk free space, you can create a new image disk set for swap type partition and then edit your configuration profile via Linode dashboard to change the old 511MB swap disk partition for the newly created image disk swap type partition. See Disk Images and Configuration Profiles - Linode Guides & Tutorials

on my 2GB Linode Xen VPS server staging test server with 2GB newly created disk partition via Linode dashboard

Code:

free -m
             total       used       free     shared    buffers     cached
Mem:          1994       1272        722          0         17        468
-/+ buffers/cache:        786       1208
Swap:         2047          0       2047

Code:

swapon -s
Filename                                Type            Size    Used    Priority
/dev/xvdb                               partition       2097148 0       -1

Create a new Disk Image


You'll end up with old 512MB swap image and New Swap Image I created.


change my existing 512MB Swap Image at /dev/xvdb to the newly created 2048MB swap image I created and hit Save Changes at bottom



Then reboot Linode Xen VPS server

 

Well technically, you can do it the Vultr thread's outlined method too, just disable the existing 512MB swap and unmount it from Linode dashboard's configuration profile. Then you'd be creating a swap partition via SSH command line using the same main primary disk partition instead.