This section explains how to Configuring DNS Profile using CLI.
Uploading Python Script
A python script is uploaded to Avi Load Balancer to use a custom DNS profile. Use the following script to upload the desired custom DNS script to Avi Load Balancer Controller.
"
Custom DNS script
"""
import socket
import os
import getpass
import requests
import inspect
import urllib
import json
import time
def CreateOrUpdateRecord(record_info, params):
username = params.get('username')
passkey = params.get('password')
ip = record_info.get('f_ip_address', '') or record_info.get('ip_address', '')
cname = record_info.get('cname', '')
fqdn = record_info.get('fqdn')
ttl = record_info.get('ttl', 900)
record_type = record_info.get('type', 'DNS_RECORD_A')
dns_record_id = 0
metadata_j = record_info.get('metadata', None)
if metadata_j:
metadata = json.loads(metadata_j)
# Check if default of 0 as DNS record id is useful
dns_record_id = metadata.get('dns_record_id', 0)
if not fqdn:
print "Not valid FQDN found %s, returning"%record_info
return
# REST API
api = WebApiClient(username, passkey, domain)
api.disable_ssl_chain_verification()
param_dict = {
# DNS Record Information
"dns_record_id" : dns_record_id,
"fqdn" : fqdn,
"type" : "CNAME" if record_type == 'DNS_RECORD_CNAME' else "A",
"ttl" : str(ttl),
"content" : cname if record_type == 'DNS_RECORD_CNAME' else ip,
"site" : "ALL"
}
# Send request to register the FQDN, failures can be raised and the VS creation will fail
rsp = api.send_request("Update", param_dict)
if not rsp:
err_str = "ERROR:"
err_str += " STATUS: " + api.get_response_status()
err_str += " TYPE: " + str(api.get_error_type())
err_str += " MESSAGE: " + api.get_error_message()
print err_str
raise Exception("DNS record update failed with %s"%err_str)
def DeleteRecord(record_info, params):
username = params.get('username')
passkey = params.get('password')
ip = record_info.get('f_ip_address', '') or record_info.get('ip_address', '')
cname = record_info.get('cname', '')
fqdn = record_info.get('fqdn')
ttl = record_info.get('ttl', 900)
record_type = record_info.get('type', 'DNS_RECORD_A')
dns_record_id = 0
metadata_j = record_info.get('metadata', None)
if metadata_j:
metadata = json.loads(metadata_j)
# Check if default of 0 as DNS record id is useful
dns_record_id = metadata.get('dns_record_id', 0)
api = WebApiClient(username, passkey, domain)
api.disable_ssl_chain_verification()
param_dict = {
# DNS Record Information
"dns_record_id" : int(dns_record_id),
"delete_reason" : "Reason for deleting record",
"push_immediately" : True,
"update_serial" : True,
}
rsp = api.send_request("Delete", param_dict)
if not rsp:
print "ERROR:"
print " STATUS: " + api.get_response_status()
print " TYPE: " + str(api.get_error_type())
print " MESSAGE: " + api.get_error_message()
return ""
The following parameters can be used in the script:
username: <username>
password: <password>
API version: <version number>
Creating Custom DNS Profile using CLI
l [admin-cntrl1]: > configure customipamdnsprofile custom-dns-profile [admin-cntrl1]: customipamdnsprofile> cancel Exit the current submode without saving do Execute a show command name Name of the Custom IPAM DNS Profile. new (Editor Mode) Create new object in editor mode no Remove field save Save and exit the current submode script_params (submode) script_uri Script URI of form controller://ipamdnsscripts/<file-name> show_schema show object schema tenant_ref Help string not found for argument watch Watch a given show command where Display the in-progress object [admin-cntrl1]: customipamdnsprofile>
In the above configuration snippet, the custom_dns_script.py script is uploaded with the following attributes.
Name:
custom-dns-profileUsername: dnsuser
Password: Password with the
is_sensitiveflag set to TrueURI for the script: controller://ipamdnsscripts/custom_dns_script.py
Use the following syntax for uploading your script. controller://ipamdnsscripts/<script name>
The following is the output of the show customipamdnsprofile custom-dns-profilecommand.
[admin:10-10-25-160]: > show customipamdnsprofile custom-dns-profile +------------------+--------------------------------------------------- Field | Value ----------------------------------------------------------------------+ | uuid |customipamdnsprofile-c12faa8a-f0eb-4128-a976-98d30391b9f2 | name |custom-dns-profile |script_uri | controller://ipamdnsscripts/custom_dns_script.py | script_params[1] | | name | username | value | dnsuser |is_sensitive | False |is_dynamic | False |script_params[2] | |name | password |value | <sensitive> |is_sensitive | True |is_dynamic | False |tenant_ref | admin +------------------+--------------------------------------------------+
