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Martin Hope
don
Asked: 2016-12-29 10:57:16 +0800 CST
  • 11

Currently I'm using a LAMP configuration for both my landing page page, for the web app, and for the APIs. Now I'd like to split these things across multiple Virtual Servers (VS). I'm unsure of the network settings and before messing up all my DNS configurations I'd like to understand if I'm about to crash my configuration.

The landing page is hosted at the second level domain (e.g. myurl.com), the web app is hosted at the lower level domain app.myurl.com, and the api at api.myurl.com. I also have a preview domain: preview.myurl.com, used for testing.

Since everything is hosted on the same VS, I currently have also four different folders (landing, api, webapp, preview), that act as "virtual hosts" for each subdomain.

My DNS configuration looks like this:

myurl.com.  A   300 123.123.123.123
www.myurl.com.  CNAME   300 myurl.com.
api.myurl.com.  CNAME   300 myurl.com.
app.myurl.com.  CNAME   300 myurl.com.
preview.myurl.com.  CNAME   300 myurl.com.

To start I'd like to change the data of each CNAME entry to the actual IP of the current VS. So that it would look like this:

myurl.com.  A   300 123.123.123.123
www.myurl.com.  CNAME   300 myurl.com.
api.myurl.com.  CNAME   300 123.123.123.123
app.myurl.com.  CNAME   300 123.123.123.123
preview.myurl.com.  CNAME   300 123.123.123.123

Then the idea is to point each subdomain to the proper VS. Initially all lower level domains (except for www.) will still be pointing to the current VS, while the second level domain for the landing page (A record for myurl.com.) will need to point to a new IP for a new VS.

Questions:

  1. Will these changes affect the way in which the current Apache Server is distributing the traffic to each subfolder (i.e. landing, api, webapp, preview)? If so, even if all IP addresses remain the same?
  2. To test things out, could I start by changing only the data value for preview.myurl.com. without risking of compromising the rest?
  3. Once all lower level domains (e.g. api.myurl.com) point to the IP of the VM, can I point the A value of myurl.com. to a different IP without compromising the other lower level domains (api, app, preview)?
domain-name-system cname-record a-record apache2 dns-zone
Martin Hope
don
Asked: 2013-04-18 11:35:41 +0800 CST
  • 0

My LAMP machine on Ubuntu 12.04 was working fine, then I tried to modify the etc/php5/apache2/php.ini file opening nautilus through the terminal with sudo nautilus.

I have edited this line:

error_reporting = E_ALL & ~E_DEPRECATED & ~E_NOTICE

to

error_reporting = E_ALL

then in terminal sudo apachectl restart and saved. But now Apache is throwing a not found error wheb I try to reach my local web sites.

I have even restarted the computer and, of course, edited back php.ini, but I'm still getting a not found error.

What is it wrong?

PS even with localhost it gives me a not found error, even if when I try sudo apachectl start it says httpd (pid 1316) already running

php