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#!/usr/bin/python
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This script reconfigure UCSM vnics for varios OPNFV deployers
# Usage: reconfigUcsNet.py [options]
#
# Options:
# -h, --help show this help message and exit
# -i IP, --ip=IP [Mandatory] UCSM IP Address
# -u USERNAME, --username=USERNAME
# [Mandatory] Account Username for UCSM Login
# -p PASSWORD, --password=PASSWORD
# [Mandatory] Account Password for UCSM Login
# -f FILE, --file=FILE
# [Optional] Yaml file with network config you want to set for POD
# If not present only current network config will be printed
#
import getpass
import optparse
import platform
import yaml
from UcsSdk import *
from collections import defaultdict
def getpassword(prompt):
if platform.system() == "Linux":
return getpass.unix_getpass(prompt=prompt)
elif platform.system() == "Windows" or platform.system() == "Microsoft":
return getpass.win_getpass(prompt=prompt)
else:
return getpass.getpass(prompt=prompt)
def get_servers(handle=None):
"""
Return list of servers
"""
orgObj = handle.GetManagedObject(None, OrgOrg.ClassId(), {OrgOrg.DN : "org-root"})[0]
servers = handle.GetManagedObject(orgObj, LsServer.ClassId())
for server in servers:
if server.Type == 'instance' and "POD-2" in server.Dn:
yield server
def get_vnics(handle=None, server=None):
"""
Return list of vnics for given server
"""
vnics = handle.ConfigResolveChildren(VnicEther.ClassId(), server.Dn, None, YesOrNo.TRUE)
return vnics.OutConfigs.GetChild()
def get_network_config(handle=None):
"""
Print current network config
"""
print "\nCURRENT NETWORK CONFIG:"
for server in get_servers(handle):
print ' {}'.format(server.Name)
for vnic in get_vnics(handle, server):
print ' {}'.format(vnic.Name)
print ' {}'.format(vnic.Addr)
vnicIfs = handle.ConfigResolveChildren(VnicEtherIf.ClassId(), vnic.Dn, None, YesOrNo.TRUE)
for vnicIf in vnicIfs.OutConfigs.GetChild():
print ' Vlan: {}'.format(vnicIf.Vnet)
def add_interface(handle=None, lsServerDn=None, vnicEther=None, templName=None, order=None):
"""
Add interface to server specified by server.DN name
"""
print " Adding interface: {}, template: {}, server.Dn: {}".format(vnicEther, templName, lsServerDn)
obj = handle.GetManagedObject(None, LsServer.ClassId(), {LsServer.DN:lsServerDn})
vnicEtherDn = lsServerDn + "/ether-" + vnicEther
params = {
VnicEther.STATS_POLICY_NAME: "default",
VnicEther.NAME: vnicEther,
VnicEther.DN: vnicEtherDn,
VnicEther.SWITCH_ID: "A-B",
VnicEther.ORDER: order,
"adminHostPort": "ANY",
VnicEther.ADMIN_VCON: "any",
VnicEther.NW_TEMPL_NAME: templName,
VnicEther.MTU: "1500"}
handle.AddManagedObject(obj, VnicEther.ClassId(), params, True)
def remove_interface(handle=None, vnicEtherDn=None):
"""
Remove interface specified by Distinguished Name (vnicEtherDn)
"""
print " Removing interface: {}".format(vnicEtherDn)
obj = handle.GetManagedObject(None, VnicEther.ClassId(), {VnicEther.DN:vnicEtherDn})
handle.RemoveManagedObject(obj)
def read_yaml_file(yamlFile):
"""
Read vnic config from yaml file
"""
# TODO: add check if vnic templates specified in file exist on UCS
with open(yamlFile, 'r') as stream:
return yaml.load(stream)
def set_network(handle=None, yamlFile=None):
"""
Configure VLANs on POD according specified network
"""
# add interfaces and bind them with vNIC templates
# TODO: make sure MAC address for admin is still same
print "\nRECONFIGURING VNICs..."
network = read_yaml_file(yamlFile)
for server in get_servers(handle):
for iface, data in network.iteritems():
add_interface(handle, server.Dn, iface, data['template'], data['order'])
# Remove other interfaces which have not assigned required vnic template
vnics = get_vnics(handle, server)
for vnic in vnics:
if not any(data['template'] in vnic.OperNwTemplName for iface, data in network.iteritems()):
remove_interface(handle, vnic.Dn)
print " {} removed, template: {}".format(vnic.Name, vnic.OperNwTemplName)
if __name__ == "__main__":
# Latest urllib2 validate certs by default
# The process wide "revert to the old behaviour" hook is to monkeypatch the ssl module
# https://bugs.python.org/issue22417
import ssl
if hasattr(ssl, '_create_unverified_context'):
ssl._create_default_https_context = ssl._create_unverified_context
try:
handle = UcsHandle()
parser = optparse.OptionParser()
parser.add_option('-i', '--ip',dest="ip",
help="[Mandatory] UCSM IP Address")
parser.add_option('-u', '--username',dest="userName",
help="[Mandatory] Account Username for UCSM Login")
parser.add_option('-p', '--password',dest="password",
help="[Mandatory] Account Password for UCSM Login")
parser.add_option('-f', '--file',dest="yamlFile",
help="[Optional] Yaml file contains network config you want to set on UCS POD1")
(options, args) = parser.parse_args()
if not options.ip:
parser.print_help()
parser.error("Provide UCSM IP Address")
if not options.userName:
parser.print_help()
parser.error("Provide UCSM UserName")
if not options.password:
options.password=getpassword("UCSM Password:")
handle.Login(options.ip, options.userName, options.password)
if (options.yamlFile != None):
print options.yamlFile
set_network(handle, options.yamlFile)
get_network_config(handle)
handle.Logout()
except Exception, err:
handle.Logout()
print "Exception:", str(err)
import traceback, sys
print '-'*60
traceback.print_exc(file=sys.stdout)
print '-'*60
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