Destroy guest OS using php

Question

I am using libvirt-php to manage my virtual machines, and I need to shutdown/destroy domU.

For this I used the following php script:

< ? php $conn=libvirt_connect("xen:///");
$name=libvirt_domain_lookup_by_id($conn,4);
$dest=libvirt_domain_destroy($name);
echo $dest; ?>

When I run this on xampp server i get the following output:

Warning: libvirt_domain_destroy() [function.libvirt-domain-destroy]: operation virDomainDestroy forbidden for read only access in /opt/lampp/htdocs/xampp/byname.php on line 5.

Here is the documentation: http://libvirt.org/php/api-reference.html#libvirt_domain_destroy

Answer 1

Depending on your version of Apache, your configuration files may reside in a different location, however the syntax is the same once you find the correct file.

To change the user and group that Apache runs as, edit these directives on the global scope:

User www-data
Group www-data

To make a system account for www-data that has no login-privileges, run the following:

sudo adduser --system --group --no-create-home www-data --quiet

Making this user account safe (e.g., by removing permissions to everything it doesn't need) is beyond the scope of this answer. Try a question like "How do I restrict user's access to filesystems and commands".

Giving www-data permissions to edit your virtual machine will likely either require adding www-data to another group which has permissions, or will require you to modify the groups of files on your system.

According to the FAQ for libvirt-php, all virtual machines run with the permissions of local users, so adding www-data to the group users might be all that is needed.

adduser www-data users