Issue swapoff: /pleskswap: swapoff failed: Cannot allocate memory

[GermanMazza]

I was trying to disable swap to make it bigger for my server (ubuntu 18.04) but I 've encounter an error and I was unable to find a solution in the forum.
I couldn't make it from step 1:
1- Turn off all swap processes: sudo swapoff -a (error: /pleskswap: swapoff failed: Cannot allocate memory)
2- Resize the swap: sudo dd if=/dev/zero of=/pleskswap bs=1G count=8
3- Make the file usable as swap: sudo mkswap /pleskswap
4- Activate the swap file: sudo swapon /pleskswap
5- Check the amount of swap available: grep SwapTotal /proc/meminfo

Any ideas? maybe kill plesk to edit the swap file?
I'm not an expert on this matter so any advice would be really appreciated

 

[IgorG]

swapoff failed: Cannot allocate memory

To disable a swap and not crash the system, you need to save the data from the swap so that the processor can work with them. Thus, there is nowhere else to do this, except in RAM. But you have more data in the swap than free space in the RAM.
So, you must first free up space in the RAM.

 

[GermanMazza]

mmm... This is a very small server with just 1gb of ram, plesk and two websites. How can I free space in the ram?
Maybe disable the services in "tools and settings / sevices management"? or maybe kill plesk process?

 

[GermanMazza]

Any ideas?

 

[IgorG]

You can go to Tools&Settings > Apache Web Server Setting and disable unused Apache modules at least.