557 lines
24 KiB
Python
557 lines
24 KiB
Python
#!/usr/bin/env python
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import urwid
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import urwid.raw_display
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import urwid.web_display
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import logging
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import sys
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import re
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import copy
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import socket
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import struct
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import netaddr
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import dhcp_checker.api
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import netifaces
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import subprocess
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from fuelmenu.settings import *
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from fuelmenu.common import network, puppet, replace, nailyfactersettings, \
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dialog
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from fuelmenu.common.urwidwrapper import *
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log = logging.getLogger('fuelmenu.pxe_setup')
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blank = urwid.Divider()
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#Need to define fields in order so it will render correctly
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#fields = ["hostname", "domain", "mgmt_if","dhcp_start","dhcp_end",
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# "blank","ext_if","ext_dns"]
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fields = ["static_label",
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"ADMIN_NETWORK/static_start", "ADMIN_NETWORK/static_end",
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"blank", "dynamic_label", "ADMIN_NETWORK/first",
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"ADMIN_NETWORK/last"]
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facter_translate = {
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"ADMIN_NETWORK/interface": "internal_interface",
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"ADMIN_NETWORK/ipaddr": "internal_ipaddress",
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"ADMIN_NETWORK/netmask": "internal_netmask",
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"ADMIN_NETWORK/first": "dhcp_pool_start",
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"ADMIN_NETWORK/last": "dhcp_pool_end",
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"ADMIN_NETWORK/static_start": "static_pool_start",
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"ADMIN_NETWORK/static_end": "static_pool_end",
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}
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mnbs_internal_ipaddress = "10.20.0.2"
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mnbs_internal_netmask = "255.255.255.0"
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mnbs_static_pool_start = "10.20.0.130"
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mnbs_static_pool_end = "10.20.0.250"
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mnbs_dhcp_pool_start = "10.20.0.10"
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mnbs_dhcp_pool_end = "10.20.0.120"
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mnbs_internal_interface = "eth1"
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DEFAULTS = {
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#"ADMIN_NETWORK/interface" : { "label" : "Management Interface",
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# "tooltip": "This is the INTERNAL network for provisioning",
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# "value" : "eth0"},
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"ADMIN_NETWORK/first": {"label": "DHCP Pool Start",
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"tooltip": "Used for defining IPs for hosts and \
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instance public addresses",
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"value": "10.0.0.130"},
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"ADMIN_NETWORK/last": {"label": "DHCP Pool End",
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"tooltip": "Used for defining IPs for hosts and \
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instance public addresses",
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"value": "10.0.0.254"},
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"static_label": {"label": "Static pool for installed nodes:",
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"tooltip": "",
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"value": "label"},
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"ADMIN_NETWORK/static_start": {"label": "Static Pool Start",
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"tooltip": "Static pool for installed \
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nodes",
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"value": "10.0.0.10"},
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"ADMIN_NETWORK/static_end": {"label": "Static Pool End",
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"tooltip": "Static pool for installed nodes",
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"value": "10.0.0.120"},
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"dynamic_label": {"label": "DHCP pool for node discovery:",
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"tooltip": "",
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"value": "label"},
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#"ADMIN_NETWORK/dynamic_start" : { "label" : "Static Pool Start",
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# "tooltip": "DHCP pool for node discovery",
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# "value" : "10.0.0.10"},
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#"ADMIN_NETWORK/dynamic_end": { "label" : "Static Pool End",
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# "tooltip": "DHCP pool for node discovery",
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# "value" : "10.0.0.120"},
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}
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class cobblerconf(urwid.WidgetWrap):
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def __init__(self, parent):
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self.name = "PXE Setup"
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self.priority = 20
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self.visible = True
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self.netsettings = dict()
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self.parent = parent
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self.deployment = "pre"
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self.getNetwork()
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self.gateway = self.get_default_gateway_linux()
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self.activeiface = sorted(self.netsettings.keys())[0]
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self.parent.managediface = self.activeiface
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self.extdhcp = True
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self.oldsettings = self.load()
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self.screen = None
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def check(self, args):
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"""Validates all fields have valid values and some sanity checks"""
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self.parent.footer.set_text("Checking data...")
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self.parent.refreshScreen()
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#Get field information
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responses = dict()
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for index, fieldname in enumerate(fields):
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if fieldname == "blank" or "label" in fieldname:
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pass
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else:
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responses[fieldname] = self.edits[index].get_edit_text()
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###Validate each field
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errors = []
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#Set internal_{ipaddress,netmask,interface}
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responses["ADMIN_NETWORK/interface"] = self.activeiface
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responses["ADMIN_NETWORK/netmask"] = self.netsettings[
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self.activeiface]["netmask"]
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responses["ADMIN_NETWORK/ipaddr"] = self.netsettings[
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self.activeiface]["addr"]
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#ensure management interface is valid
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if responses["ADMIN_NETWORK/interface"] not in self.netsettings.keys():
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errors.append("Management interface not valid")
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else:
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self.parent.footer.set_text("Scanning for DHCP servers. \
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Please wait...")
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self.parent.refreshScreen()
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###Start DHCP check on this interface
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#dhcp_server_data=[{'server_id': '192.168.200.2', 'iface': 'eth2',
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# 'yiaddr': '192.168.200.15', 'mac':
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# '52:54:00:12:35:02', 'server_ip': '192.168.200.2',
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# 'dport': 67, 'message': 'offer',
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# 'gateway': '0.0.0.0'}]
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dhcp_server_data = dhcp_checker.api.check_dhcp_on_eth(
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self.activeiface, timeout=5)
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num_dhcp = len(dhcp_server_data)
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if num_dhcp == 0:
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log.debug("No DHCP servers found")
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else:
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#Problem exists, but permit user to continue
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log.error("%s foreign DHCP server(s) found: %s" %
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(num_dhcp, dhcp_server_data))
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#Build dialog elements
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dhcp_info = []
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dhcp_info.append(urwid.Padding(
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urwid.Text(("header", "!!! WARNING !!!")),
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"center"))
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dhcp_info.append(TextLabel("You have selected an interface \
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that contains one or more DHCP servers. This will impact provisioning. You \
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should disable these DHCP servers before you continue, or else deployment \
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will likely fail."))
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dhcp_info.append(TextLabel(""))
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for index, dhcp_server in enumerate(dhcp_server_data):
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dhcp_info.append(TextLabel("DHCP Server #%s:" % (index+1)))
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dhcp_info.append(TextLabel("IP address: %-10s" %
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dhcp_server['server_ip']))
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dhcp_info.append(TextLabel("MAC address: %-10s" %
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dhcp_server['mac']))
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dhcp_info.append(TextLabel(""))
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dialog.display_dialog(self, urwid.Pile(dhcp_info),
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"DHCP Servers Found on %s"
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% self.activeiface)
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###Ensure pool start and end are on the same subnet as mgmt_if
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#Ensure mgmt_if has an IP first
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if len(self.netsettings[responses["ADMIN_NETWORK/interface"]][
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"addr"]) == 0:
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errors.append("Go to Interfaces to configure management \
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interface first.")
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else:
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#Ensure ADMIN_NETWORK/interface is not running DHCP
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if self.netsettings[responses["ADMIN_NETWORK/interface"]][
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"bootproto"] == "dhcp":
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errors.append("%s is running DHCP.Change it to static "
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"first." % self.activeiface)
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#Ensure Static Pool Start and Static Pool are valid IPs
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try:
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if netaddr.valid_ipv4(responses[
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"ADMIN_NETWORK/static_start"]):
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static_start = netaddr.IPAddress(responses[
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"ADMIN_NETWORK/static_start"])
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else:
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raise Exception("")
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except Exception, e:
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errors.append("Not a valid IP address for Static Pool "
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"Start: %s" % e)
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try:
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if netaddr.valid_ipv4(responses[
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"ADMIN_NETWORK/static_end"]):
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static_end = netaddr.IPAddress(responses[
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"ADMIN_NETWORK/static_end"])
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else:
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raise Exception("")
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except:
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errors.append("Invalid IP address for Static Pool end: "
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"%s" % responses["ADMIN_NETWORK/static_end"])
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#Ensure DHCP Pool Start and DHCP Pool are valid IPs
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try:
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if netaddr.valid_ipv4(responses["ADMIN_NETWORK/first"]):
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dhcp_start = netaddr.IPAddress(
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responses["ADMIN_NETWORK/first"])
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else:
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raise Exception("")
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except Exception, e:
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errors.append("Invalid IP address for DHCP Pool Start:"
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" %s" % e)
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try:
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if netaddr.valid_ipv4(responses["ADMIN_NETWORK/last"]):
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dhcp_end = netaddr.IPAddress(
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responses["ADMIN_NETWORK/last"])
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else:
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raise Exception("")
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except:
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errors.append("Invalid IP address for DHCP Pool end: %s"
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% responses["ADMIN_NETWORK/last"])
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#Ensure pool start and end are in the same subnet of each other
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netmask = self.netsettings[responses["ADMIN_NETWORK/interface"]
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]["netmask"]
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if network.inSameSubnet(responses["ADMIN_NETWORK/first"],
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responses["ADMIN_NETWORK/last"],
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netmask) is False:
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errors.append("DHCP Pool start and end are not in the "
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"same subnet.")
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#Ensure pool start and end are in the right netmask
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mgmt_if_ipaddr = self.netsettings[responses[
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"ADMIN_NETWORK/interface"]]["addr"]
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if network.inSameSubnet(responses["ADMIN_NETWORK/first"],
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mgmt_if_ipaddr, netmask) is False:
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errors.append("DHCP Pool start does not match management"
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" network.")
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if network.inSameSubnet(responses["ADMIN_NETWORK/last"],
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mgmt_if_ipaddr, netmask) is False:
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errors.append("DHCP Pool end is not in the same subnet as"
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" management interface.")
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if len(errors) > 0:
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self.parent.footer.set_text("Errors: %s First error: %s"
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% (len(errors), errors[0]))
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return False
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else:
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self.parent.footer.set_text("No errors found.")
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return responses
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def apply(self, args):
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responses = self.check(args)
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if responses is False:
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log.error("Check failed. Not applying")
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log.error("%s" % (responses))
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return False
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#Always save even if "post"
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self.save(responses)
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#Need to decide if we are pre-deployment or post-deployment
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if self.deployment == "post":
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self.updateCobbler(responses)
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def updateCobbler(self, params):
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patterns = {
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'cblr_server': '^server: .*',
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'cblr_next_server': '^next_server: .*',
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'mgmt_if': '^interface=.*',
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'domain': '^domain=.*',
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'server': '^server=.*',
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'dhcp-range': '^dhcp-range=',
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'dhcp-option': '^dhcp-option=',
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'pxe-service': '^pxe-service=(^,)',
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'dhcp-boot': '^dhcp-boot=([^,],{3}),'
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}
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def cancel(self, button):
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for index, fieldname in enumerate(fields):
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if fieldname == "blank" or "label" in fieldname:
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pass
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else:
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self.edits[index].set_edit_text(DEFAULTS[fieldname]['value'])
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self.setNetworkDetails()
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def load(self):
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#Read in yaml
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defaultsettings = Settings().read(self.parent.defaultsettingsfile)
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oldsettings = defaultsettings
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oldsettings.update(Settings().read(self.parent.settingsfile))
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log.debug("Old settings %s" % oldsettings)
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for setting in DEFAULTS.keys():
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if "label" in setting:
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continue
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elif "/" in setting:
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part1, part2 = setting.split("/")
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DEFAULTS[setting]["value"] = oldsettings[part1][part2]
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else:
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DEFAULTS[setting]["value"] = oldsettings[setting]
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if oldsettings["ADMIN_NETWORK"]["interface"] \
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in self.netsettings.keys():
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self.activeiface = oldsettings["ADMIN_NETWORK"]["interface"]
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return oldsettings
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def save(self, responses):
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## Generic settings start ##
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newsettings = dict()
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for setting in responses.keys():
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if "/" in setting:
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part1, part2 = setting.split("/")
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if part1 not in newsettings:
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#We may not touch all settings, so copy oldsettings first
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newsettings[part1] = self.oldsettings[part1]
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newsettings[part1][part2] = responses[setting]
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else:
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newsettings[setting] = responses[setting]
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## Generic settings end ##
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## Need to calculate and set cidr, netmask, size
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newsettings['ADMIN_NETWORK']['netmask'] = self.netsettings[newsettings
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['ADMIN_NETWORK']['interface']]["netmask"]
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newsettings['ADMIN_NETWORK']['cidr'] = network.getCidr(
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self.netsettings[newsettings['ADMIN_NETWORK']['interface']][
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"addr"], newsettings['ADMIN_NETWORK']['netmask'])
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newsettings['ADMIN_NETWORK']['size'] = network.getCidrSize(
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newsettings['ADMIN_NETWORK']['cidr'])
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log.debug(str(newsettings))
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Settings().write(newsettings, defaultsfile=self.parent.settingsfile,
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outfn="newsettings.yaml")
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#Write naily.facts
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factsettings = dict()
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#for key in newsettings.keys():
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log.debug(str(facter_translate))
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log.debug(str(newsettings))
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for key in facter_translate.keys():
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factsettings[facter_translate[key]] = responses[key]
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n = nailyfactersettings.NailyFacterSettings()
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log.debug("Facts to write: %s" % factsettings)
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n.write(factsettings)
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#Set oldsettings to reflect new settings
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self.oldsettings = newsettings
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#Update DEFAULTS
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for index, fieldname in enumerate(fields):
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if fieldname != "blank" and "label" not in fieldname:
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DEFAULTS[fieldname]['value'] = responses[fieldname]
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self.parent.footer.set_text("Changes saved successfully.")
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def getNetwork(self):
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"""Uses netifaces module to get addr, broadcast, netmask about
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network interfaces"""
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for iface in netifaces.interfaces():
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if 'lo' in iface or 'vir' in iface:
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#if 'lo' in iface or 'vir' in iface or 'vbox' in iface:
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if iface != "virbr2-nic":
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continue
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try:
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self.netsettings.update({iface: netifaces.ifaddresses(iface)[
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netifaces.AF_INET][0]})
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self.netsettings[iface]["onboot"] = "Yes"
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except:
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self.netsettings.update({iface: {"addr": "", "netmask": "",
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"onboot": "no"}})
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self.netsettings[iface]['mac'] = netifaces.ifaddresses(iface)[
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netifaces.AF_LINK][0]['addr']
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#Set link state
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try:
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with open("/sys/class/net/%s/operstate" % iface) as f:
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content = f.readlines()
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self.netsettings[iface]["link"] = content[0].strip()
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except:
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self.netsettings[iface]["link"] = "unknown"
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#Change unknown link state to up if interface has an IP
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if self.netsettings[iface]["link"] == "unknown":
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if self.netsettings[iface]["addr"] != "":
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self.netsettings[iface]["link"] = "up"
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#Read bootproto from /etc/sysconfig/network-scripts/ifcfg-DEV
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self.netsettings[iface]['bootproto'] = "none"
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try:
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with open("/etc/sysconfig/network-scripts/ifcfg-%s" % iface)\
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as fh:
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for line in fh:
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if re.match("^BOOTPROTO=", line):
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self.netsettings[iface]['bootproto'] = \
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line.split('=').strip()
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break
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except:
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#Check for dhclient process running for this interface
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if self.getDHCP(iface):
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self.netsettings[iface]['bootproto'] = "dhcp"
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else:
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self.netsettings[iface]['bootproto'] = "none"
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self.gateway = self.get_default_gateway_linux()
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def getDHCP(self, iface):
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"""Returns True if the interface has a dhclient process running"""
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noout = open('/dev/null', 'w')
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dhclient_running = subprocess.call(["pgrep", "-f", "dhclient.*%s" %
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(iface)], stdout=noout,
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stderr=noout)
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if dhclient_running == 0:
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return True
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else:
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return False
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def get_default_gateway_linux(self):
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"""Read the default gateway directly from /proc."""
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with open("/proc/net/route") as fh:
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for line in fh:
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fields = line.strip().split()
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if fields[1] != '00000000' or not int(fields[3], 16) & 2:
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continue
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return socket.inet_ntoa(struct.pack("<L", int(fields[2], 16)))
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def radioSelectIface(self, current, state, user_data=None):
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"""Update network details and display information"""
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### Urwid returns the previously selected radio button.
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### The previous object has True state, which is wrong.
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### Somewhere in rb group a RadioButton is set to True.
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for rb in current.group:
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if rb.get_label() == current.get_label():
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continue
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if rb.base_widget.state is True:
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self.activeiface = rb.base_widget.get_label()
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self.parent.managediface = self.activeiface
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break
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self.gateway = self.get_default_gateway_linux()
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self.getNetwork()
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self.setNetworkDetails()
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return
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def setNetworkDetails(self):
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self.net_text1.set_text("Interface: %-13s Link: %s" % (
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self.activeiface, self.netsettings[self.activeiface]['link'].
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upper()))
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self.net_text2.set_text("IP: %-15s MAC: %s" % (self.netsettings[
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self.activeiface]['addr'],
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self.netsettings[self.activeiface]['mac']))
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self.net_text3.set_text("Netmask: %-15s Gateway: %s" % (
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self.netsettings[self.activeiface]['netmask'],
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self.gateway))
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log.debug("bootproto for %s: %s" % (self.netsettings[self.activeiface],
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self.netsettings[self.activeiface]['bootproto']))
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if self.netsettings[self.activeiface]['link'].upper() == "UP":
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if self.netsettings[self.activeiface]['bootproto'] == "dhcp":
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self.net_text4.set_text("WARNING: Cannot use interface running"
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" DHCP.\nReconfigure as static in "
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"Network Setup screen.")
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else:
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self.net_text4.set_text("")
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else:
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self.net_text4.set_text("WARNING: This interface is DOWN. "
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"Configure it first.")
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#Calculate and set Static/DHCP pool fields
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#Max IPs = net size - 2 (master node + bcast)
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net_ip_list = network.getNetwork(
|
|
self.netsettings[self.activeiface]['addr'],
|
|
self.netsettings[self.activeiface]['netmask'])
|
|
try:
|
|
half = int(len(net_ip_list)/2)
|
|
static_pool = list(net_ip_list[:half])
|
|
dhcp_pool = list(net_ip_list[half:])
|
|
static_start = str(static_pool[0])
|
|
static_end = str(static_pool[-1])
|
|
dynamic_start = str(dhcp_pool[0])
|
|
dynamic_end = str(dhcp_pool[-1])
|
|
if self.net_text4.get_text() == "":
|
|
self.net_text4.set_text("This network configuration can "
|
|
"support %s nodes." % len(dhcp_pool))
|
|
except:
|
|
#We don't have valid values, so mark all fields empty
|
|
static_start = ""
|
|
static_end = ""
|
|
dynamic_start = ""
|
|
dynamic_end = ""
|
|
for index, key in enumerate(fields):
|
|
if key == "ADMIN_NETWORK/static_start":
|
|
self.edits[index].set_edit_text(static_start)
|
|
elif key == "ADMIN_NETWORK/static_end":
|
|
self.edits[index].set_edit_text(static_end)
|
|
elif key == "ADMIN_NETWORK/first":
|
|
self.edits[index].set_edit_text(dynamic_start)
|
|
elif key == "ADMIN_NETWORK/last":
|
|
self.edits[index].set_edit_text(dynamic_end)
|
|
|
|
def refresh(self):
|
|
self.getNetwork()
|
|
self.setNetworkDetails()
|
|
|
|
def screenUI(self):
|
|
#Define your text labels, text fields, and buttons first
|
|
text1 = urwid.Text("Settings for PXE booting of slave nodes.")
|
|
text2 = urwid.Text("Select the interface where PXE will run:")
|
|
#Current network settings
|
|
self.net_text1 = TextLabel("")
|
|
self.net_text2 = TextLabel("")
|
|
self.net_text3 = TextLabel("")
|
|
self.net_text4 = TextLabel("")
|
|
log.debug("Default iface %s" % self.activeiface)
|
|
self.net_choices = ChoicesGroup(self, sorted(self.netsettings.keys()),
|
|
default_value=self.activeiface,
|
|
fn=self.radioSelectIface)
|
|
|
|
self.edits = []
|
|
toolbar = self.parent.footer
|
|
for key in fields:
|
|
#Example: key = hostname, label = Hostname, value = fuel-pm
|
|
if key == "blank":
|
|
self.edits.append(blank)
|
|
elif DEFAULTS[key]["value"] == "radio":
|
|
label = TextLabel(DEFAULTS[key]["label"])
|
|
choices = ChoicesGroup(self, ["Yes", "No"],
|
|
default_value="Yes",
|
|
fn=self.radioSelectIface)
|
|
self.edits.append(Columns([label, choices]))
|
|
elif DEFAULTS[key]["value"] == "label":
|
|
self.edits.append(TextLabel(DEFAULTS[key]["label"]))
|
|
else:
|
|
caption = DEFAULTS[key]["label"]
|
|
default = DEFAULTS[key]["value"]
|
|
tooltip = DEFAULTS[key]["tooltip"]
|
|
self.edits.append(TextField(key, caption, 23, default, tooltip,
|
|
toolbar))
|
|
|
|
#Button to check
|
|
button_check = Button("Check", self.check)
|
|
#Button to revert to previously saved settings
|
|
button_cancel = Button("Cancel", self.cancel)
|
|
#Button to apply (and check again)
|
|
button_apply = Button("Apply", self.apply)
|
|
|
|
#Wrap buttons into Columns so it doesn't expand and look ugly
|
|
check_col = Columns([button_check, button_cancel,
|
|
button_apply, ('weight', 2, blank)])
|
|
|
|
self.listbox_content = [text1, blank, text2]
|
|
self.listbox_content.extend([self.net_choices, self.net_text1,
|
|
self.net_text2, self.net_text3,
|
|
self.net_text4, blank])
|
|
self.listbox_content.extend(self.edits)
|
|
self.listbox_content.append(blank)
|
|
self.listbox_content.append(check_col)
|
|
|
|
#Add listeners
|
|
|
|
#Build all of these into a list
|
|
#self.listbox_content = [ text1, blank, blank, edit1, edit2, \
|
|
# edit3, edit4, edit5, edit6, button_check ]
|
|
self.setNetworkDetails()
|
|
|
|
#Add everything into a ListBox and return it
|
|
self.listwalker = urwid.SimpleListWalker(self.listbox_content)
|
|
screen = urwid.ListBox(self.listwalker)
|
|
return screen
|