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transit-vpc-push-paloalto-config.py
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######################################################################################################################
# Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved. #
# #
# Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance #
# with the License. A copy of the License is located at #
# #
# http://aws.amazon.com/asl/ #
# #
# or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES #
# OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions #
# and limitations under the License. #
######################################################################################################################
import boto3
from botocore.client import Config
import paramiko
from xml.dom import minidom
import ast
import time
import os
import logging
log = logging.getLogger()
log.setLevel(logging.INFO)
config_file = 'transit_vpc_config.txt'
#These S3 endpoint URLs are provided to support VPC endpoints for S3 in regions such as Frankfort that require explicit-
#region endpoint definition
endpoint_url = {
"us-east-1" : "https://s3.amazonaws.com",
"us-east-2" : "https://s3-us-east-2.amazonaws.com",
"us-west-1" : "https://s3-us-west-1.amazonaws.com",
"us-west-2" : "https://s3-us-west-2.amazonaws.com",
"eu-west-1" : "https://s3-eu-west-1.amazonaws.com",
"eu-central-1" : "https://s3-eu-central-1.amazonaws.com",
"ap-northeast-1" : "https://s3-ap-northeast-1.amazonaws.com",
"ap-northeast-2" : "https://s3-ap-northeast-2.amazonaws.com",
"ap-south-1" : "https://s3-ap-south-1.amazonaws.com",
"ap-southeast-1" : "https://s3-ap-southeast-1.amazonaws.com",
"ap-southeast-2" : "https://s3-ap-southeast-2.amazonaws.com",
"sa-east-1" : "https://s3-sa-east-1.amazonaws.com"
}
#Logic to determine when the prompt has been discovered
def prompt(chan):
buff = ''
while not (buff.endswith('% ') or buff.endswith('> ') or buff.endswith('# ')):
resp = chan.recv(9999)
buff += resp
#log.info("response: %s",resp)
return buff
# Logic to figure out the next available tunnel
def getNextTunnelId(ssh):
log.info('Start getNextTunnelId')
output = ''
prompt(ssh)
ssh.send('show interface logical \n')
output = prompt(ssh)
lastTunnelNum = ''
for line in output.split('\n'):
log.info('line: %s',line)
if line.strip()[:7] == 'tunnel.':
log.info("%s", line)
lastTunnelNum = line.strip().partition(' ')[0].replace('tunnel.','')
ssh.send('exit\n')
if lastTunnelNum == '':
return 1
else:
return 1 + int(lastTunnelNum)
# Logic to figure out existing tunnel IDs
def getExistingTunnelId(ssh, vpn_connection_id, tvar):
log.info('Start getExistingTunnelId')
output = ''
prompt(ssh)
ssh.send('show interface logical \n')
output = prompt(ssh)
lastTunnelNum = ''
for line in output.split('\n'):
log.info('line: %s',line)
if line.strip()[:7] == 'tunnel.':
log.info("%s", line)
lastTunnelNum = line.strip().partition(' ')[0].replace('tunnel.','')
ssh.send('exit\n')
if lastTunnelNum == '':
return 0
else:
return int(lastTunnelNum)
#Generic logic to push pre-generated config to the router
def pushConfig(ssh, config):
ssh.send('configure\n')
log.debug("%s", prompt(ssh))
stime = time.time()
for line in config:
if line == "WAIT":
log.debug("Waiting 30 seconds...")
time.sleep(30)
else:
ssh.send(line+'\n')
log.info("%s", prompt(ssh))
log.info("Saving backup config...")
ssh.send('save config to AWS_config.txt\n\n\n\n\n')
log.info("Backup configuration saved")
time.sleep(15)
log.info("Committing Configuration...")
ssh.send('commit\n')
time.sleep(30)
ssh.send('exit\n')
log.debug(" ... %s seconds ...", (time.time() - stime))
ssh.send('exit\n')
log.info("Config Update complete!")
#Logic to determine the bucket prefix from the S3 key name that was provided
def getBucketPrefix(bucket_name, bucket_key):
#Figure out prefix from known bucket_name and bucket_key
bucket_prefix = '/'.join(bucket_key.split('/')[:-2])
if len(bucket_prefix) > 0:
bucket_prefix += '/'
return bucket_prefix
#Logic to download the transit VPC configuration file from S3
def getTransitConfig(bucket_name, bucket_prefix, s3_url, config_file):
s3 = boto3.client('s3', endpoint_url=s3_url,
config=Config(s3={'addressing_style': 'virtual'}, signature_version='s3v4'))
log.info("Downloading config file: %s/%s/%s%s", s3_url, bucket_name, bucket_prefix, config_file)
return ast.literal_eval(s3.get_object(Bucket=bucket_name,Key=bucket_prefix+config_file)['Body'].read())
#Logic to upload a new/updated transit VPC configuration file to S3 (not currently used)
def putTransitConfig(bucket_name, bucket_prefix, s3_url, config_file, config):
s3=boto3.client('s3', endpoint_url=s3_url,
config=Config(s3={'addressing_style': 'virtual'}, signature_version='s3v4'))
log.info("Uploading new config file: %s/%s/%s%s", s3_url,bucket_name, bucket_prefix,config_file)
s3.put_object(Bucket=bucket_name,Key=bucket_prefix+config_file,Body=str(config))
#Logic to download the SSH private key from S3 to be used for SSH public key authentication
def downloadPrivateKey(bucket_name, bucket_prefix, s3_url, prikey):
if os.path.exists('/tmp/'+prikey):
os.remove('/tmp/'+prikey)
s3=boto3.client('s3', endpoint_url=s3_url,
config=Config(s3={'addressing_style': 'virtual'}, signature_version='s3v4'))
log.info("Downloading private key: %s/%s/%s%s",s3_url, bucket_name, bucket_prefix, prikey)
s3.download_file(bucket_name,bucket_prefix+prikey, '/tmp/'+prikey)
#Logic to create the appropriate PaloAlto configuration
def create_paloalto_config(bucket_name, bucket_key, s3_url, bgp_asn, ssh):
log.info("Processing %s/%s", bucket_name, bucket_key)
#Download the VPN configuration XML document
s3=boto3.client('s3',endpoint_url=s3_url,
config=Config(s3={'addressing_style': 'virtual'}, signature_version='s3v4'))
log.info("s3 %s", s3)
config=s3.get_object(Bucket=bucket_name,Key=bucket_key)
log.info("Config %s", config)
xmldoc=minidom.parseString(config['Body'].read())
log.info("xmldoc %s", xmldoc)
#Extract transit_vpc_configuration values
vpn_config = xmldoc.getElementsByTagName("transit_vpc_config")[0]
log.info("vpn_config %s", vpn_config)
account_id = vpn_config.getElementsByTagName("account_id")[0].firstChild.data
log.info("account_id %s", account_id)
vpn_endpoint = vpn_config.getElementsByTagName("vpn_endpoint")[0].firstChild.data
log.info("vpn_endpoint %s", vpn_endpoint)
vpn_status = vpn_config.getElementsByTagName("status")[0].firstChild.data
log.info("vpn_status %s", vpn_status)
preferred_path = vpn_config.getElementsByTagName("preferred_path")[0].firstChild.data
log.info("preferred_path %s", preferred_path)
#Extract VPN connection information
vpn_connection=xmldoc.getElementsByTagName('vpn_connection')[0]
log.info("vpn_connection %s", vpn_connection)
vpn_connection_id=vpn_connection.attributes['id'].value
log.info("vpn_connection_id %s", vpn_connection_id)
customer_gateway_id=vpn_connection.getElementsByTagName("customer_gateway_id")[0].firstChild.data
log.info("customer_gateway_id %s", customer_gateway_id)
vpn_gateway_id=vpn_connection.getElementsByTagName("vpn_gateway_id")[0].firstChild.data
log.info("vpn_gateway_id %s", vpn_gateway_id)
vpn_connection_type=vpn_connection.getElementsByTagName("vpn_connection_type")[0].firstChild.data
log.info("vpn_connection_type %s", vpn_connection_type)
tunnelId=0
#Determine the VPN tunnels to work with
if vpn_status == 'create':
tunnelId=getNextTunnelId(ssh)
'''
else:
tunnelId=getExistingTunnelId(ssh,vpn_connection_id)
if tunnelId == 0:
return
'''
log.info("%s %s with tunnel #%s and #%s.",vpn_status, vpn_connection_id, tunnelId, tunnelId+1)
if vpn_status == 'delete':
config_text = []
config_text.append('configure \n')
ipsec_tunnel_var = 0
for ipsec_tunnel in vpn_connection.getElementsByTagName("ipsec_tunnel"):
ipsec_tunnel_var += 1
tunnelId=getExistingTunnelId(ssh,vpn_connection_id,ipsec_tunnel_var)
if tunnelId == 0:
return
config_text.append('delete network tunnel ipsec ipsec-tunnel-{} auto-key ike-gateway ike-vpn-{}-{}'.format(tunnelId,vpn_connection_id,ipsec_tunnel_var))
config_text.append('delete network ike gateway ike-vpn-{}-{}'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('delete network ike crypto-profiles ipsec-crypto-profiles ipsec-vpn-{}-{}'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('delete network ike crypto-profiles ike-crypto-profiles ike-crypto-vpn-{}'.format(vpn_connection_id,tunnelId))
config_text.append('delete network virtual-router default protocol bgp peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{}'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('delete network virtual-router default interface tunnel.{}'.format(tunnelId))
config_text.append('delete zone untrust network layer3 tunnel.{}'.format(tunnelId))
config_text.append('delete network interface tunnel units tunnel.{}'.format(tunnelId))
else:
config_text = []
config_text.append('configure \n')
ipsec_tunnel_var = 0
# Create tunnel specific configuration
for ipsec_tunnel in vpn_connection.getElementsByTagName("ipsec_tunnel"):
ipsec_tunnel_var += 1
customer_gateway=ipsec_tunnel.getElementsByTagName("customer_gateway")[0]
log.info("customer_gateway %s", customer_gateway)
customer_gateway_tunnel_outside_address=customer_gateway.getElementsByTagName("tunnel_outside_address")[0].getElementsByTagName("ip_address")[0].firstChild.data
log.info("customer_gateway_tunnel_outside_address %s", customer_gateway_tunnel_outside_address)
customer_gateway_tunnel_inside_address_ip_address=customer_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("ip_address")[0].firstChild.data
log.info("customer_gateway_tunnel_inside_address_ip_address %s", customer_gateway_tunnel_inside_address_ip_address)
customer_gateway_tunnel_inside_address_network_mask=customer_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("network_mask")[0].firstChild.data
log.info("customer_gateway_tunnel_inside_address_network_mask %s", customer_gateway_tunnel_inside_address_network_mask)
customer_gateway_tunnel_inside_address_network_cidr=customer_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("network_cidr")[0].firstChild.data
log.info("customer_gateway_tunnel_inside_address_network_cidr %s", customer_gateway_tunnel_inside_address_network_cidr)
customer_gateway_bgp_asn=customer_gateway.getElementsByTagName("bgp")[0].getElementsByTagName("asn")[0].firstChild.data
log.info("customer_gateway_bgp_asn %s", customer_gateway_bgp_asn)
customer_gateway_bgp_hold_time=customer_gateway.getElementsByTagName("bgp")[0].getElementsByTagName("hold_time")[0].firstChild.data
log.info("customer_gateway_bgp_hold_time %s", customer_gateway_bgp_hold_time)
vpn_gateway=ipsec_tunnel.getElementsByTagName("vpn_gateway")[0]
log.info("vpn_gateway %s", vpn_gateway)
vpn_gateway_tunnel_outside_address=vpn_gateway.getElementsByTagName("tunnel_outside_address")[0].getElementsByTagName("ip_address")[0].firstChild.data
log.info("vpn_gateway_tunnel_outside_address %s", vpn_gateway_tunnel_outside_address)
vpn_gateway_tunnel_inside_address_ip_address=vpn_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("ip_address")[0].firstChild.data
log.info("vpn_gateway_tunnel_inside_address_ip_address %s", vpn_gateway_tunnel_inside_address_ip_address)
vpn_gateway_tunnel_inside_address_network_mask=vpn_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("network_mask")[0].firstChild.data
log.info("vpn_gateway_tunnel_inside_address_network_mask %s", vpn_gateway_tunnel_inside_address_network_mask)
vpn_gateway_tunnel_inside_address_network_cidr=vpn_gateway.getElementsByTagName("tunnel_inside_address")[0].getElementsByTagName("network_cidr")[0].firstChild.data
log.info("vpn_gateway_tunnel_inside_address_network_cidr %s", vpn_gateway_tunnel_inside_address_network_cidr)
vpn_gateway_bgp_asn=vpn_gateway.getElementsByTagName("bgp")[0].getElementsByTagName("asn")[0].firstChild.data
log.info("vpn_gateway_bgp_asn %s", vpn_gateway_bgp_asn)
vpn_gateway_bgp_hold_time=vpn_gateway.getElementsByTagName("bgp")[0].getElementsByTagName("hold_time")[0].firstChild.data
log.info("vpn_gateway_bgp_hold_time %s", vpn_gateway_bgp_hold_time)
ike=ipsec_tunnel.getElementsByTagName("ike")[0]
log.info("ike %s", ike)
ike_authentication_protocol=ike.getElementsByTagName("authentication_protocol")[0].firstChild.data
log.info("ike_authentication_protocol %s", ike_authentication_protocol)
ike_encryption_protocol=ike.getElementsByTagName("encryption_protocol")[0].firstChild.data
log.info("ike_encryption_protocol %s", ike_encryption_protocol)
ike_lifetime=ike.getElementsByTagName("lifetime")[0].firstChild.data
log.info("ike_lifetime %s", ike_lifetime)
ike_perfect_forward_secrecy=ike.getElementsByTagName("perfect_forward_secrecy")[0].firstChild.data
log.info("ike_perfect_forward_secrecy %s", ike_perfect_forward_secrecy)
ike_mode=ike.getElementsByTagName("mode")[0].firstChild.data
log.info("ike_mode %s", ike_mode)
ike_pre_shared_key=ike.getElementsByTagName("pre_shared_key")[0].firstChild.data
log.info("ike_pre_shared_key %s", ike_pre_shared_key)
ipsec=ipsec_tunnel.getElementsByTagName("ipsec")[0]
log.info("ipsec %s", ipsec)
ipsec_protocol=ipsec.getElementsByTagName("protocol")[0].firstChild.data
log.info("ipsec_protocol %s", ipsec_protocol)
ipsec_authentication_protocol=ipsec.getElementsByTagName("authentication_protocol")[0].firstChild.data
log.info("ipsec_authentication_protocol %s", ipsec_authentication_protocol)
ipsec_encryption_protocol=ipsec.getElementsByTagName("encryption_protocol")[0].firstChild.data
log.info("ipsec_encryption_protocol %s", ipsec_encryption_protocol)
ipsec_lifetime=ipsec.getElementsByTagName("lifetime")[0].firstChild.data
log.info("ipsec_lifetime %s", ipsec_lifetime)
ipsec_perfect_forward_secrecy=ipsec.getElementsByTagName("perfect_forward_secrecy")[0].firstChild.data
log.info("ipsec_perfect_forward_secrecy %s", ipsec_perfect_forward_secrecy)
ipsec_mode=ipsec.getElementsByTagName("mode")[0].firstChild.data
log.info("ipsec_mode %s", ipsec_mode)
ipsec_clear_df_bit=ipsec.getElementsByTagName("clear_df_bit")[0].firstChild.data
log.info("ipsec_clear_df_bit %s", ipsec_clear_df_bit)
ipsec_fragmentation_before_encryption=ipsec.getElementsByTagName("fragmentation_before_encryption")[0].firstChild.data
log.info("ipsec_fragmentation_before_encryption %s", ipsec_fragmentation_before_encryption)
ipsec_tcp_mss_adjustment=ipsec.getElementsByTagName("tcp_mss_adjustment")[0].firstChild.data
log.info("ipsec_tcp_mss_adjustment %s", ipsec_tcp_mss_adjustment)
ipsec_dead_peer_detection_interval=ipsec.getElementsByTagName("dead_peer_detection")[0].getElementsByTagName("interval")[0].firstChild.data
log.info("ipsec_dead_peer_detection_interval %s", ipsec_dead_peer_detection_interval)
ipsec_dead_peer_detection_retries=ipsec.getElementsByTagName("dead_peer_detection")[0].getElementsByTagName("retries")[0].firstChild.data
log.info("ipsec_dead_peer_detection_retries %s", ipsec_dead_peer_detection_retries)
config_text.append('set network ike crypto-profiles ike-crypto-profiles ike-crypto-vpn-{}-{} dh-group group2'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike crypto-profiles ike-crypto-profiles ike-crypto-vpn-{}-{} hash sha1'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike crypto-profiles ike-crypto-profiles ike-crypto-vpn-{}-{} lifetime seconds 28800'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike crypto-profiles ike-crypto-profiles ike-crypto-vpn-{}-{} encryption aes-128-cbc'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike gateway ike-vpn-{}-{} protocol ikev1 ike-crypto-profile ike-crypto-vpn-{}-{} exchange-mode main'.format(vpn_connection_id,ipsec_tunnel_var,vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike gateway ike-vpn-{}-{} protocol ikev1 dpd interval 10 retry 3 enable yes'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike gateway ike-vpn-{}-{} authentication pre-shared-key key {}'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike gateway ike-vpn-{}-{} local-address ip {}'.format(vpn_connection_id,ipsec_tunnel_var,vpn_gateway_tunnel_outside_address))
config_text.append('set network ike gateway ike-vpn-{}-{} local-address interface ethernet1/1'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike gateway ike-vpn-{}-{} peer-address ip {}'.format(vpn_connection_id,ipsec_tunnel_var,vpn_gateway_tunnel_inside_address))
config_text.append('set network ike crypto-profiles ipsec-crypto-profiles ipsec-vpn-{}-{} esp authentication sha1'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike crypto-profiles ipsec-crypto-profiles ipsec-vpn-{}-{} esp encryption aes-128-cbc'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network ike crypto-profiles ipsec-crypto-profiles ipsec-vpn-{}-{} dh-group group2 lifetime seconds 3600'.format(vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network interface tunnel units tunnel.{} ip {}/{}'.format(tunnelId,customer_gateway_tunnel_inside_address_ip_address,vpn_gateway_tunnel_inside_address_network_cidr))
config_text.append('set network interface tunnel units tunnel.{} mtu 1427'.format(tunnelId))
config_text.append('set zone untrust network layer3 tunnel.{}'.format(tunnelId))
config_text.append('set network virtual-router default interface tunnel.{}'.format(tunnelId))
config_text.append('set network tunnel ipsec ipsec-tunnel-{} auto-key ipsec-crypto-profile ipsec-vpn-{}-{}'.format(ipsec_tunnel_var,vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network tunnel ipsec ipsec-tunnel-{} auto-key ike-gateway ike-vpn-{}-{}'.format(ipsec_tunnel_var,vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network tunnel ipsec ipsec-tunnel-{} tunnel-interface tunnel.{}'.format(ipsec_tunnel_var,tunnelId))
config_text.append('set network tunnel ipsec ipsec-tunnel-{} anti-replay yes'.format(ipsec_tunnel_var,tunnelId))
config_text.append('set network virtual-router default protocol bgp router-id {}'.format(vpn_gateway_tunnel_outside_address))
config_text.append('set network virtual-router default protocol bgp install-route yes')
config_text.append('set network virtual-router default protocol bgp enable yes')
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} peer-as {}'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var,customer_gateway_bgp_asn))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} connection-options keep-alive-interval 10'.format(vpn_connection_id,ipsec_tunnel_var,vpn_gateway_bgp_asn))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} connection-options hold-time 30'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} enable yes'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} local-address ip {}/{}'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var,customer_gateway_tunnel_inside_address_ip_address,vpn_gateway_tunnel_inside_address_network_cidr))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} local-address interface tunnel.{}'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var,tunnelId))
config_text.append('set network virtual-router default protocol bgp local-as {} peer-group AmazonBGP peer amazon-tunnel-vpn-{}-{} peer-address ip {}'.format(vpn_gateway_bgp_asn,vpn_connection_id,ipsec_tunnel_var,vpn_gateway_tunnel_inside_address_ip_address))
config_text.append('set network virtual-router default protocol redist-profile Default_to_VPC filter type static')
config_text.append('set network virtual-router default protocol redist-profile Default_to_VPC filter destination 0.0.0.0/0')
config_text.append('set network virtual-router default protocol redist-profile Default_to_VPC priority 10')
config_text.append('set network virtual-router default protocol redist-profile Default_to_VPC action redist')
config_text.append('set network virtual-router default protocol bgp allow-redist-default-route yes')
config_text.append('set network virtual-router default protocol bgp redist-rules Default_to_VPC enable yes')
config_text.append('set network virtual-router default protocol bgp redist-rules Default_to_VPC set-origin incomplete')
tunnelId+=1
log.debug("Conversion complete")
return config_text
def lambda_handler(event, context):
record=event['Records'][0]
bucket_name=record['s3']['bucket']['name']
bucket_key=record['s3']['object']['key']
bucket_region=record['awsRegion']
bucket_prefix=getBucketPrefix(bucket_name, bucket_key)
log.debug("Getting config")
stime = time.time()
config = getTransitConfig(bucket_name, bucket_prefix, endpoint_url[bucket_region], config_file)
if 'PAVM1' in bucket_key:
pavm_ip=config['PIP1']
pavm_name='PAVM1'
else:
pavm_ip=config['PIP2']
pavm_name='PAVM2'
log.info("--- %s seconds ---", (time.time() - stime))
#Download private key file from secure S3 bucket
downloadPrivateKey(bucket_name, bucket_prefix, endpoint_url[bucket_region], config['PRIVATE_KEY'])
log.debug("Reading downloaded private key into memory.")
k = paramiko.RSAKey.from_private_key_file("/tmp/"+config['PRIVATE_KEY'])
#Delete the temp copy of the private key
os.remove("/tmp/"+config['PRIVATE_KEY'])
log.debug("Deleted downloaded private key.")
c = paramiko.SSHClient()
c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
log.info("Connecting to %s (%s)", pavm_name, pavm_ip)
stime = time.time()
try:
c.connect( hostname = pavm_ip, username = config['USER_NAME'], pkey = k )
PubKeyAuth=True
except paramiko.ssh_exception.AuthenticationException:
log.error("PubKey Authentication Failed! Connecting with password")
c.connect( hostname = pavm_ip, username = config['USER_NAME'], password = config['PASSWORD'] )
PubKeyAuth=False
#Need to handle the generic exception case which most likely happens due to single ssh connection restriction.
#If still no luck after 15 minutes, let it time out.
except :
i = 0
while(time.time() - stime < 900):
i = i + 1
time.sleep(5)
try:
c.connect( hostname = pavm_ip, username = config['USER_NAME'], pkey = k )
break
except:
pass
if(time.time() - stime < 900):
log.info("Connected to %s after %s retry(retries)", pavm_name, i)
else:
log.info("Connection to %s timedout. Stopped retrying after 15 minutes", pavm_name)
c.close()
raise ValueError( "Operation timed out!!" )
log.info("--- %s seconds ---", (time.time() - stime))
log.info("Connected to %s",pavm_ip)
ssh = c.invoke_shell()
log.info("%s",prompt(ssh))
log.info("Creating config.")
log.info("bucket_name: %s", bucket_name)
log.info("bucket_key: %s", bucket_key)
log.info("endpoint_url[bucket_region]: %s", endpoint_url[bucket_region])
log.info("config['BGP_ASN']: %s", config['BGP_ASN'])
stime = time.time()
pavm_config = create_paloalto_config(bucket_name, bucket_key, endpoint_url[bucket_region], config['BGP_ASN'], ssh)
log.info("--- %s seconds ---", (time.time() - stime))
log.info("Pushing config to router.")
stime = time.time()
pushConfig(ssh,pavm_config)
log.info("--- %s seconds ---", (time.time() - stime))
ssh.close()
#Close the ssh client as well
c.close()
return
{
'message' : "Script execution completed. See Cloudwatch logs for complete output"
}