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How can you safely change the Vultr instance location?
At some point, server owners need to change their Vultr instance location where it was initially setup. And, it can be for better server performance, response times, and more. Server owners can easily move the Vultr instances to any location in the world in a very...
How to use Django with Fastcgi?
Web servers like Apache, Nginx, etc. do not know how to run Python applications. That's why, Django web applications need an interface like WSGI to communicate with web servers. But, what if the hosting servers do not support these WSGI (Web server gateway interface)?...
Change OS on Vultr instance – How to do it without any data loss?
I accidentally created a Vultr instance with CentOS, but I want to change the OS. Can you change it to Ubuntu? That was a recent support ticket received at our Server Management Services department where we manage customer's servers. Server owners often request to...
“mmap failed cannot allocate memory”- Here’s how to fix it
Every application consumes server resources. At times, buggy applications create resource crunch on the server and result in memory errors. One such error is "mmap failed cannot allocate memory". This error primarily happens due to memory shortage. Unfortunately,...
How to fix “user unknown in virtual mailbox table” in Postfix?
Everyone expects their emails to work perfectly, but that doesn't always work. Sometimes, emails bounce with strange errors. And, one such error is "user unknown in virtual mailbox table" in Postfix servers. What's this virtual mailbox table? How can I add the user in...
Here are the steps to configure and secure Private IP on a Vultr instance
Enabling private IP address is one of the good strategies to secure your Vultr instances. But, setting up private networks on your Vultr Cloud Compute is not so easy. We need to manually configure the IP address on the network interface. Also, handling network...
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