Hey folks, I'm reaching out to see if anyone knows about the limits on server aliases for Apache virtual hosts. I manage some web servers for clients, and we're looking at some vhosts that could have over 50 server aliases. I've been digging through the Apache documentation and searching online, but I can't find a definitive answer. Is there a known limit on the number of aliases for a single vhost? Any insights would be really helpful. Thanks!
3 Answers
According to the Apache HTTP Server documentation, there's no limit on the number of virtual hosts. However, there may be practical limits based on your system’s file descriptor capacity. When many vhosts log to their own files, it might hit the file descriptor limit, especially on some operating systems. Modern Linux setups generally don’t have a problem unless configured to have strict limits. So if you’re on Windows or a standard Linux environment, you should be in the clear! Watch out for older systems like Solaris, though; they can impose more restrictions.
From what I understand, there isn't a specific limit to how many aliases you can have per virtual host. I've personally managed servers with thousands of virtual hosts without any hiccups, so over 50 should be totally fine. In fact, I have more than that on my own server!
Having over 50 aliases shouldn't be an issue at all. Some setups with more than a thousand aliases make it work just fine! But if you push towards 1024+ aliases, then you might want to check your server's configuration just to be safe.
I was actually asking about the limit on a single vhost, though. We're expecting to set up a single vhost with around 80 aliases, so I hope that won't be an issue.