62: Определение подходящего сетевого интервейса по имеющемуся ipv4

SWSCloudNode/network.py

@@ -0,0 +1,48 @@
+# coding: utf-8
+
+import re
+import os
+from netaddr import *
+
+
+class Detect(object):
+    def __init__(self):
+        self.iplist = list()
+
+    def list_bridges(self):
+        return os.popen('ifconfig').read()
+
+    def detect(self, ip_for_vm):
+        ip4vm = IPAddress(ip_for_vm)
+        c = list()
+        for paragraph in self.list_bridges().split('\n\n'):
+
+            # ma = re.compile("(br\d+).*HWaddr ([^ ]+).*addr:([^ ]+).*Mask:([^ ]+)", re.MULTILINE | re.DOTALL)
+            ma = re.compile("(virbr\d+|br\d+|br\d:\d+) .*HWaddr ([^ ]+).*addr:([^ ]+).*Mask:([^ ]+)", re.MULTILINE | re.DOTALL)
+
+            result = ma.match(paragraph)
+
+            if result:
+                vlan = result.group(1).rstrip()
+                mac = result.group(2).rstrip()
+                ip = result.group(3).rstrip()
+                mask = result.group(4).rstrip()
+
+                # inrange
+                ip.split('.')
+
+                m = mac.split(':')
+                mac = m[0] + m[1] + "." + m[2] + m[3] + "." + m[4] + m[5]
+
+                # print "vlan:", vlan
+                # print "ip:",ip
+                # print "mac:", mac
+                ipn = IPNetwork(ip, mask)
+
+                c.append(dict(interface=vlan, ip=ip, mask=mask, mac=mac, valid=True if ip4vm in ipn else False))
+        return c
+
+    def get_suitable_interface(self, ip):
+        for interface in self.detect(ip):
+            if interface['valid']:
+                return interface['interface']

SWSCloudNode/settings.py

@@ -26,8 +26,8 @@ if os.path.exists(settings_file):
         sys.exit()
     else:
         if settings.get('node', 'interface') not in os.listdir('/sys/class/net/'):
-            logging.error('Interface not found: %s' % settings.get('node', 'interface'))
-            sys.exit()
+            logging.warning('Interface not found: %s' % settings.get('node', 'interface'))
+            # sys.exit()
     if not settings.has_option('node', 'sleep'):
         logging.error("No option 'sleep' in section: 'node'")
         sys.exit()

cloud_node_agent.py

@@ -4,6 +4,7 @@
 import time
 from SWSCloudNode.settings import settings
 from SWSCloudNode.logger import logging
+from SWSCloudNode.network import Detect
 from SWSCloudNode import Node
 from SWSCloudNode import Tasks
 from SWSCloudNode import lxc, qemu
@@ -55,7 +56,10 @@ while True:
                 ipv6['ipv6'] = task['plain']['ipv6']
                 ipv6['ipv6_gateway'] = task['plain']['ipv6_gateway']
 
-            nodeclient.container_config_create(container_id, settings.get('node', 'interface'), ipv4, ipv6)
+            # автоматически определяем подходящий сетевой интерфейс исходя из имеющегося ipv4
+            interface = Detect().get_suitable_interface(ipv4)
+            # interface = settings.get('node', 'interface')
+            nodeclient.container_config_create(container_id, interface, ipv4, ipv6)
 
             container_config_file = '/var/lib/gocloud/node/configs/%s.config' % container_id
 
@@ -137,10 +141,14 @@ while True:
             # TODO: if container doesn't exists then complete task and report about this fact
             p = task['plain']
             try:
+                # автоматически определяем подходящий сетевой интерфейс исходя из имеющегося ipv4
+                interface = Detect().get_suitable_interface(p['ipv4'])
+                # interface = settings.get('node', 'interface')
+
                 qemu.QEMU().create(
                     p['cores'], p['memory'], p['storage'], p['swap'], p['hostname'],
                     p['ipv4'], p['ipv4_gateway'], p['dns1'], p['dns2'], p['password'],
-                    p['os_name'], p['os_suite'], settings.get('node', 'interface'),
+                    p['os_name'], p['os_suite'], interface,
                     p['vm_id'],
                     p['ssh_key'],
                 )

extra/supervisor.conf

@@ -0,0 +1,11 @@
+[program:cloudnode]
+user=root
+group=root
+command=/usr/local/bin/cloud_node_agent.py
+autostart=true
+autorestart=true
+startsecs=1
+startretries=777
+exitcodes=0,2
+stopsignal=TERM
+stopwaitsecs=1

setup.py

@@ -4,7 +4,7 @@ from setuptools import setup
 
 setup(
     name='SWSCloudNode',
-    version='3.1.0',
+    version='3.1.1',
     author='Vyacheslav Anzhiganov',
     author_email='vanzhiganov@ya.ru',
     packages=[