Not able to connect rabbitmq from kubernetes cron jobs - kubernetes

Question

I am using rabbitmq at a remote (cloudamqp.com) and I create a cron job on Kubernetes. On my local machine, my job is working fine and the Kubernetes cronJob schedules perfectly well but the Job redirects the rabbitmq connection URL to 127.0.0.1:5672 and I get an error.
pika.exceptions.ConnectionClosed: Connection to 127.0.0.1:5672 failed: [Errno 111] Connection refused
I check logs of cron job and my connection URL is perfectly fine but when pika is trying to connect to the host it automatically redirects to 127.0.0.1:5672 as we know the cron pod is not running any rabbitmq server so it refuses the connection.
CronJob.yml
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: scrape-news
spec:
concurrencyPolicy: Forbid
jobTemplate:
spec:
template:
metadata:
labels:
app: scrape-news
spec:
containers:
- name: scrape-news
image: SCRAPER_IMAGE
imagePullPolicy: Always
restartPolicy: Never
schedule: '* * * * *'
successfulJobsHistoryLimit: 3
RabbitMQ Connection
print(env.RABBIT_URL)
self.params = pika.URLParameters(env.RABBIT_URL)
self.connection = pika.BlockingConnection(parameters=self.params)
self.channel = self.connection.channel() # start a channel
Connection URL is exact same and works on my local setup.

Answer 1

Based on your CronJob spec you are not passing the environment variable RABBIT_URL.
Your code looks as if it is expecting this variable to be set, which it is not, and which is likely why it is defaulting to localhost.
self.params = pika.URLParameters(env.RABBIT_URL)
You probably want something like this:
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: scrape-news
spec:
concurrencyPolicy: Forbid
jobTemplate:
spec:
template:
metadata:
labels:
app: scrape-news
spec:
containers:
- name: scrape-news
image: SCRAPER_IMAGE
imagePullPolicy: Always
env:
- name: RABBIT_URL
value: cloudamqp.com
restartPolicy: Never
schedule: '* * * * *'
successfulJobsHistoryLimit: 3