If you currently have a shared hosting plan, the main reason to move to a VPS hosting plan is resource utilization. The issue really isn’t that your website is running slow, but rather it needs to be able to handle more web traffic. Your current web host will usually inform you when you’re exceeding shared hosting resource limits. That’s the ideal time to switch to VPS. With a virtual private server, you’ll have your own operating system and dedicated resources for increased power. Your site will then be able to handle increased traffic. And, you’ll have even better insulation from other hosting customers.
# Get rid of "postscreen_cache: unable to get exclusive lock" errors
There are a few downsides to shared hosting, though, mostly because you’re sharing. For instance, if someone else on your shared server has a huge spike in traffic, that could affect your website’s performance. However, if you’re just getting your website off the ground and don’t have huge traffic volume, shared hosting is a great way to get online!
Virtualization is a framework or methodology of dividing the resources of a computer into multiple execution environments. Virtualization techniques create multiple isolated partitions (Virtual Machines (VM) or Virtual Private Servers (VPS)) on a single physical server. There are several kinds of virtualization techniques which provide similar features but differ in the degree of abstraction and the methods used for virtualization.
Each of these stack layers contain I/O routes for anonymous public network requests that must be penetration-tested by web security professionals. Users on managed plans can expect the hosting company to keep all of the web server stack software updated with security patches, while website owners under unmanaged plans will need to keep these aspects up-to-date personally.
VPS is a step up for most users, but you'll also benefit by knowing a bit more about the technology. When your website is stored on a VPS, you are solely responsible for setting up, maintaining and running the server yourself. Handling an internet server is not an easy task! It involves taking care of security patches, server configuration, software updates, and so on. Unless you have the degree of technical skills required, it is going to tricky, and for this reason, there are two versions of VPS hosting – managed VPS and unmanaged VPS.
Now go to Virtualmin > Server Configuration > Manage SSL Certificate and select the Let's Encrypt tab. Select Domain names listed here and insert the server's hostname. Click Request Certificate and your free certificate should be installed. Four new buttons will appear to allow you to copy this certificate to Webmin, Usermin, Postfix and Dovecot - click each of them in turn. Your server now has free certificates installed, and they will update automatically every 2 months.
Be careful, though – there are some common traps many people fall into. Firstly, the promotional prices are only on offer for a month, after which you’re paying between $49.99 and $299.99/month on any of its five plans. Secondly, the 30 day, money-back guarantee is only valid for those who subscribe for a year or longer. Everyone else only has 48 hours to claim a refund.