/includes/discovery/libvirt-vminfo.inc.php
PHP | 133 lines | 85 code | 22 blank | 26 comment | 29 complexity | cdff5fd3401d85f7a0f091b982b7c321 MD5 | raw file
Possible License(s): GPL-3.0, MIT
- <?php
- # FIXME should do the deletion etc in a common file perhaps? like for the sensors
- # Try to discover Libvirt Virtual Machines.
- if ($config['enable_libvirt'] == '1' && $device['os'] == "linux" )
- {
- $libvirt_vmlist = array();
- echo("Libvirt VM: ");
- $ssh_ok = 0;
- foreach ($config['libvirt_protocols'] as $method)
- {
- if (strstr($method,'qemu'))
- {
- $uri = $method.'://' . $device['hostname'] . '/system';
- }
- else
- {
- $uri = $method.'://' . $device['hostname'];
- }
- if (strstr($method,'ssh') && !$ssh_ok)
- {
- # Check if we are using SSH if we can log in without password - without blocking the discovery
- # Also automatically add the host key so discovery doesn't block on the yes/no question, and run echo so we don't get stuck in a remote shell ;-)
- exec('ssh -o "StrictHostKeyChecking no" -o "PreferredAuthentications publickey" -o "IdentitiesOnly yes" ' . $device['hostname'] . ' echo -e', $out, $ret);
- if ($ret != 255) { $ssh_ok = 1; }
- }
- if ($ssh_ok || !strstr($method,'ssh'))
- {
- # Fetch virtual machine list
- unset($domlist);
- exec($config['virsh'] . ' -c '.$uri.' list',$domlist);
- foreach ($domlist as $dom)
- {
- list($dom_id,) = explode(' ',trim($dom),2);
- if (is_numeric($dom_id))
- {
- # Fetch the Virtual Machine information.
- unset($vm_info_array);
- exec($config['virsh'] . ' -c '.$uri.' dumpxml ' . $dom_id,$vm_info_array);
- # <domain type='kvm' id='3'>
- # <name>moo.example.com</name>
- # <uuid>48cf6378-6fd5-4610-0611-63dd4b31cfd6</uuid>
- # <memory>1048576</memory>
- # <currentMemory>1048576</currentMemory>
- # <vcpu>8</vcpu>
- # <os>
- # <type arch='x86_64' machine='pc-0.12'>hvm</type>
- # <boot dev='hd'/>
- # </os>
- # <features>
- # <acpi/>
- # (...)
- # Convert array to string
- unset($vm_info_xml);
- foreach ($vm_info_array as $line) { $vm_info_xml .= $line; }
- $xml = simplexml_load_string('<?xml version="1.0"?> ' . $vm_info_xml);
- if ($debug) { print_r($xml); }
- $vmwVmDisplayName = $xml->name;
- $vmwVmGuestOS = ''; # libvirt does not supply this
- $vmwVmMemSize = $xml->currentMemory / 1024;
- exec($config['virsh'] . ' -c '.$uri.' domstate ' . $dom_id,$vm_state);
- $vmwVmState = ucfirst($vm_state[0]);
- $vmwVmCpus = $xml->vcpu;
- # Check whether the Virtual Machine is already known for this host.
- $result = mysql_query("SELECT * FROM vminfo WHERE device_id = '" . $device["device_id"] . "' AND vmwVmVMID = '" . $dom_id . "' AND vm_type='libvirt'");
- if (mysql_num_rows($result) == 0)
- {
- mysql_query("INSERT INTO vminfo (device_id, vm_type, vmwVmVMID, vmwVmDisplayName, vmwVmGuestOS, vmwVmMemSize, vmwVmCpus, vmwVmState) VALUES (" . $device["device_id"] . ", 'libvirt',
- '" . $dom_id . "', '" . mres($vmwVmDisplayName) . "', '" . mres($vmwVmGuestOS) . "', '" . $vmwVmMemSize . "', '" . $vmwVmCpus . "', '" . mres($vmwVmState) . "')");
- echo("+");
- log_event("Virtual Machine added: $vmwVmDisplayName ($vmwVmMemSize MB)", $device, 'vm', mysql_insert_id());
- } else {
- $row = mysql_fetch_assoc($result);
- if ($row['vmwVmState'] != $vmwVmState
- || $row['vmwVmDisplayName'] != $vmwVmDisplayName
- || $row['vmwVmCpus'] != $vmwVmCpus
- || $row['vmwVmGuestOS'] != $vmwVmGuestOS
- || $row['vmwVmMemSize'] != $vmwVmMemSize)
- {
- mysql_query("UPDATE vminfo SET vmwVmState='" . mres($vmwVmState) . "', vmwVmGuestOS='" . mres($vmwVmGuestOS) . "', vmwVmDisplayName='". mres($vmwVmDisplayName) . "',
- vmwVmMemSize='" . mres($vmwVmMemSize) . "', vmwVmCpus='" . mres($vmwVmCpus) . "' WHERE device_id='" . $device["device_id"] . "' AND vm_type='libvirt' AND vmwVmVMID='" . $dom_id . "'");
- echo("U");
- # FIXME eventlog
- }
- else
- {
- echo(".");
- }
- }
- # Save the discovered Virtual Machine.
- $libvirt_vmlist[] = $dom_id;
- }
- }
- }
- # If we found VMs, don't cycle the other protocols anymore.
- if (count($libvirt_vmlist)) { break; }
- }
- # Get a list of all the known Virtual Machines for this host.
- $db_vm_list = mysql_query("SELECT id, vmwVmVMID, vmwVmDisplayName FROM vminfo WHERE device_id = '" . $device["device_id"] . "' AND vm_type='libvirt'");
- while ($db_vm = mysql_fetch_assoc($db_vm_list))
- {
- # Delete the Virtual Machines that are removed from the host.
- if (!in_array($db_vm["vmwVmVMID"], $libvirt_vmlist))
- {
- mysql_query("DELETE FROM vminfo WHERE id = '" . $db_vm["id"] . "'");
- echo("-");
- log_event("Virtual Machine removed: " . $db_vm['vmwVmDisplayName'], $device, 'vm', $db_vm['id']);
- }
- }
- echo("\n");
- }
- ?>