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138 lines
5.5 KiB
Python
138 lines
5.5 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 cs_databag 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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class CsRedundant(object):
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CS_RAMDISK_DIR = "/ramdisk"
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CS_ROUTER_DIR = "%s/rrouter" % CS_RAMDISK_DIR
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CS_TEMPLATES = [
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"enable_pubip.sh.templ",
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"master.sh.templ", "backup.sh.templ", "fault.sh.templ",
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"primary-backup.sh.templ", "heartbeat.sh.templ", "check_heartbeat.sh.templ",
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"arping_gateways.sh.templ", "check_bumpup.sh", "disable_pubip.sh",
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"services.sh",
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]
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CS_TEMPLATES_DIR = "/opt/cloud/templates"
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def __init__(self):
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pass
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def set(self, cl, address):
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logging.debug("Router redundancy status is %s", cl.is_redundant())
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self.cl = cl
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self.address = address
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if 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.umount_tmpfs(self.CS_RAMDISK_DIR)
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CsHelper.rmdir(self.CS_RAMDISK_DIR)
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CsHelper.rm("/etc/cron.d/heartbeat")
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def _redundant_on(self):
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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"), "/etc/keepalived/keepalived.conf")
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CsHelper.copy_if_needed("%s/%s" % (self.CS_TEMPLATES_DIR, "conntrackd.conf.templ"), "/etc/conntrackd/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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# keepalived configuration
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file = CsFile("/etc/keepalived/keepalived.conf")
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file.search(" router_id ", " router_id %s" % self.cl.get_name())
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file.search(" priority ", " priority %s" % 20)
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file.search(" weight ", " weight %s" % 2)
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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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control = self.address.get_control_if()
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connt = CsFile("/etc/conntrackd/conntrackd.conf")
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connt.search("[\s\t]IPv4_interface ", "\t\tIPv4_interface %s" % control.get_ip())
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connt.search("[\s\t]Interface ", "\t\tInterface %s" % control.get_device())
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connt.section("Address Ignore {", "}", self._collect_ignore_ips())
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connt.commit()
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# FIXME
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# enable/disable_pubip/master/slave etc. will need rewriting to use the new python config
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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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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_cidr(), o.get_broadcast(), o.get_ip())
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lines.append(str)
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return lines
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