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57d3ffaef8
Fixed issues with real IP and not virtual (gateway) IP being opened on the firewall DNS now works on the vms
278 lines
12 KiB
Python
278 lines
12 KiB
Python
# -- coding: utf-8 --
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# -------------------------------------------------------------------- #
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# Notes
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# -------------------------------------------------------------------- #
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# Vrouter
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#
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# eth0 router gateway IP for isolated network
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# eth1 Control IP for hypervisor
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# eth2 public ip(s)
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#
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# VPC Router
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#
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# eth0 control interface
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# eth1 public ip
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# eth2+ Guest networks
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# -------------------------------------------------------------------- #
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import sys
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import os
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from pprint import pprint
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from CsDatabag import CsDataBag, CsCmdLine
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import logging
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import CsHelper
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from CsFile import CsFile
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from CsConfig import CsConfig
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from CsProcess import CsProcess
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from CsApp import CsPasswdSvc
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class CsRedundant(object):
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CS_RAMDISK_DIR = "/ramdisk"
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CS_PRIO_UP = 1
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CS_PRIO_DOWN = -1
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CS_ROUTER_DIR = "%s/rrouter" % CS_RAMDISK_DIR
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CS_TEMPLATES = [
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"heartbeat.sh.templ", "check_heartbeat.sh.templ",
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"arping_gateways.sh.templ"
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]
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CS_TEMPLATES_DIR = "/opt/cloud/templates"
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CONNTRACKD_BIN = "/usr/sbin/conntrackd"
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CONNTRACKD_KEEPALIVED_CONFLOCK = "/var/lock/conntrack.lock"
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CONNTRACKD_CONF = "/etc/conntrackd/conntrackd.conf"
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RROUTER_LOG = "/var/log/cloud.log"
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KEEPALIVED_CONF = "/etc/keepalived/keepalived.conf"
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def __init__(self, config):
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self.cl = config.cmdline()
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self.address = config.address()
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def set(self):
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logging.debug("Router redundancy status is %s", self.cl.is_redundant())
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if self.cl.is_redundant():
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self._redundant_on()
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else:
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self._redundant_off()
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def _redundant_off(self):
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CsHelper.service("conntrackd", "stop")
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CsHelper.service("keepalived", "stop")
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CsHelper.umount_tmpfs(self.CS_RAMDISK_DIR)
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CsHelper.rmdir(self.CS_RAMDISK_DIR)
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CsHelper.rm(self.CONNTRACKD_CONF)
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CsHelper.rm(self.KEEPALIVED_CONF)
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def _redundant_on(self):
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guest = self.address.get_guest_if()
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# No redundancy if there is no guest network
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if guest is None:
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self._redundant_off()
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# Bring up the public Interface(s)
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if self.cl.is_master():
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for obj in [o for o in self.address.get_ips() if o.is_public()]:
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print obj.get_device()
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self.check_is_up(obj.get_device())
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return
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CsHelper.mkdir(self.CS_RAMDISK_DIR, 0755, False)
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CsHelper.mount_tmpfs(self.CS_RAMDISK_DIR)
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CsHelper.mkdir(self.CS_ROUTER_DIR, 0755, False)
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for s in self.CS_TEMPLATES:
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d = s
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if s.endswith(".templ"):
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d = s.replace(".templ", "")
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CsHelper.copy_if_needed("%s/%s" % (self.CS_TEMPLATES_DIR, s), "%s/%s" % (self.CS_ROUTER_DIR, d))
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CsHelper.copy_if_needed("%s/%s" % (self.CS_TEMPLATES_DIR, "keepalived.conf.templ"), self.KEEPALIVED_CONF)
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CsHelper.copy_if_needed("%s/%s" % (self.CS_TEMPLATES_DIR, "conntrackd.conf.templ"), self.CONNTRACKD_CONF)
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CsHelper.copy_if_needed("%s/%s" % (self.CS_TEMPLATES_DIR, "checkrouter.sh.templ"), "/opt/cloud/bin/checkrouter.sh")
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CsHelper.execute('sed -i "s/--exec\ \$DAEMON;/--exec\ \$DAEMON\ --\ --vrrp;/g" /etc/init.d/keepalived')
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# checkrouter.sh configuration
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file = CsFile("/opt/cloud/bin/checkrouter.sh")
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file.greplace("[RROUTER_LOG]", self.RROUTER_LOG)
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file.commit()
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# keepalived configuration
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file = CsFile(self.KEEPALIVED_CONF)
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ads = [o for o in self.address.get_ips() if o.is_public()]
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# Add a comment for each public IP. If any change this will cause keepalived to restart
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# As things stand keepalived will be configured before the IP is added or deleted
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i = 0
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for o in ads:
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file.addeq("! %s=%s" % (i, o.get_cidr()))
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i = i + 1
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file.search(" router_id ", " router_id %s" % self.cl.get_name())
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file.search(" priority ", " priority %s" % self.cl.get_priority())
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file.search(" interface ", " interface %s" % guest.get_device())
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file.search(" state ", " state %s" % "EQUAL")
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file.search(" virtual_router_id ", " virtual_router_id %s" % self.cl.get_router_id())
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file.greplace("[RROUTER_BIN_PATH]", self.CS_ROUTER_DIR)
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file.section("virtual_ipaddress {", "}", self._collect_ips())
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file.commit()
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# conntrackd configuration
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connt = CsFile(self.CONNTRACKD_CONF)
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if guest is not None:
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connt.section("Multicast {", "}", [
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"IPv4_address 225.0.0.50\n",
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"Group 3780\n",
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"IPv4_interface %s\n" % guest.get_ip(),
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"Interface %s\n" % guest.get_device(),
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"SndSocketBuffer 1249280\n",
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"RcvSocketBuffer 1249280\n",
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"Checksum on\n"])
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connt.section("Address Ignore {", "}", self._collect_ignore_ips())
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connt.commit()
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if connt.is_changed():
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CsHelper.service("conntrackd", "restart")
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if file.is_changed():
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CsHelper.service("keepalived", "restart")
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# Configure heartbeat cron job
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cron = CsFile("/etc/cron.d/heartbeat")
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cron.add("SHELL=/bin/bash", 0)
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cron.add("PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin", 1)
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cron.add("*/1 * * * * root $SHELL %s/check_heartbeat.sh 2>&1 > /dev/null" % self.CS_ROUTER_DIR, -1)
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cron.commit()
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proc = CsProcess(['/usr/sbin/keepalived', '--vrrp'])
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if not proc.find():
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CsHelper.service("keepalived", "restart")
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def set_fault(self):
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""" Set fault mode on this router """
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if not self.cl.is_redundant():
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logging.error("Set fault called on non-redundant router")
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return
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logging.info("Router switched to fault mode")
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ads = [o for o in self.address.get_ips() if o.is_public()]
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for o in ads:
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CsHelper.execute("ifconfig %s down" % o.get_device())
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cmd = "%s -C %s" % (self.CONNTRACKD_BIN, self.CONNTRACKD_CONF)
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CsHelper.execute("%s -s" % cmd)
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CsHelper.service("ipsec", "stop")
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CsHelper.service("xl2tpd", "stop")
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CsHelper.service("dnsmasq", "stop")
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ads = [o for o in self.address.get_ips() if o.needs_vrrp()]
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for o in ads:
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pwdsvc = CsPasswdSvc(o.get_gateway()).stop()
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cl.dbag['config']['redundant_master'] = "false"
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cl.save()
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logging.info("Router switched to fault mode")
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def set_backup(self):
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""" Set the current router to backup """
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if not self.cl.is_redundant():
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logging.error("Set backup called on non-redundant router")
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return
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"""
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if not self.cl.is_master():
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logging.error("Set backup called on node that is already backup")
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return
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"""
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logging.info("Router switched to backup mode")
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ads = [o for o in self.address.get_ips() if o.is_public()]
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for o in ads:
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CsHelper.execute("ifconfig %s down" % o.get_device())
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cmd = "%s -C %s" % (self.CONNTRACKD_BIN, self.CONNTRACKD_CONF)
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CsHelper.execute("%s -d" % cmd)
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CsHelper.service("ipsec", "stop")
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CsHelper.service("xl2tpd", "stop")
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ads = [o for o in self.address.get_ips() if o.needs_vrrp()]
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for o in ads:
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pwdsvc = CsPasswdSvc(o.get_gateway()).stop()
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CsHelper.service("dnsmasq", "stop")
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# self._set_priority(self.CS_PRIO_DOWN)
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self.cl.dbag['config']['redundant_master'] = "false"
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# CsHelper.service("keepalived", "restart")
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self.cl.save()
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logging.info("Router switched to backup mode")
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def set_master(self):
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""" Set the current router to master """
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if not self.cl.is_redundant():
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logging.error("Set master called on non-redundant router")
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return
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"""
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if self.cl.is_master():
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logging.error("Set master called on master node")
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return
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"""
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ads = [o for o in self.address.get_ips() if o.is_public()]
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for o in ads:
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# cmd2 = "ip link set %s up" % self.getDevice()
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CsHelper.execute("ifconfig %s down" % o.get_device())
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CsHelper.execute("ifconfig %s up" % o.get_device())
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CsHelper.execute("arping -I %s -A %s -c 1" % (o.get_device(), o.get_ip()))
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# FIXME Need to add in the default routes but I am unsure what the gateway is
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# ip route add default via $gw table Table_$dev proto static
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cmd = "%s -C %s" % (self.CONNTRACKD_BIN, self.CONNTRACKD_CONF)
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CsHelper.execute("%s -c" % cmd)
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CsHelper.execute("%s -f" % cmd)
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CsHelper.execute("%s -R" % cmd)
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CsHelper.execute("%s -B" % cmd)
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CsHelper.service("ipsec", "restart")
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CsHelper.service("xl2tpd", "restart")
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ads = [o for o in self.address.get_ips() if o.needs_vrrp()]
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for o in ads:
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pwdsvc = CsPasswdSvc(o.get_gateway()).restart()
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CsHelper.service("dnsmasq", "restart")
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self.cl.dbag['config']['redundant_master'] = "true"
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self.cl.save()
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# CsHelper.service("keepalived", "restart")
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logging.info("Router switched to master mode")
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def _collect_ignore_ips(self):
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"""
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This returns a list of ip objects that should be ignored
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by conntrackd
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"""
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lines = []
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lines.append("\t\t\tIPv4_address %s\n" % "127.0.0.1")
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lines.append("\t\t\tIPv4_address %s\n" % self.address.get_control_if().get_ip())
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# FIXME - Do we need to also add any internal network gateways?
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return lines
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def _collect_ips(self):
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"""
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Construct a list containing all the ips that need to be looked afer by vrrp
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This is based upon the address_needs_vrrp method in CsAddress which looks at
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the network type and decides if it is an internal address or an external one
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In a DomR there will only ever be one address in a VPC there can be many
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The new code also gives the possibility to cloudstack to have a hybrid device
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thet could function as a router and VPC router at the same time
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"""
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lines = []
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for o in self.address.get_ips():
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if o.needs_vrrp():
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str = " %s brd %s dev %s\n" % (o.get_gateway_cidr(), o.get_broadcast(), o.get_device())
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lines.append(str)
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self.check_is_up(o.get_device())
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return lines
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def check_is_up(self, device):
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""" Ensure device is up """
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cmd = "ip link show %s | grep 'state DOWN'" % device
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for i in CsHelper.execute(cmd):
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if " DOWN " in i:
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cmd2 = "ip link set %s up" % device
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CsHelper.execute(cmd2)
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