'send mails using sendgrid and kubernates cronjob in GKE

I am trying to send mail using sendgrid api and cronjob in k8s , I tried my python code in cloud function and it is running as expected however when I used my code to create GCR image and deploy it in a k8s cronjob i got an urllib.error.URLError: <urlopen error [Errno 104] Connection reset by peer> error

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Well i created a pod for debugging , here is my pod definition that uses my linux image :

apiVersion: v1
kind: Pod
metadata:
  name: notifier
spec:
  serviceAccountName: xxxxxxxxxxx
  containers:
    - name: test
      image: eu.gcr.io/xxxxxxxxxxxxxxxxxxxxxx:v1.4
      command: [ "/bin/bash", "-c", "--" ]
      args: [ "while true; do sleep 30; done;" ]

I know that I need to allow traffic (egress and ingress ) so that my pod can get traffic from api however i don't know how to do it , here is my cronjob definition :

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: zzzzzzzzzzzzzzz
spec:
  schedule: "00 7 * * *"
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 5
  failedJobsHistoryLimit: 3
  jobTemplate:
    spec:
      parallelism: 1
      backoffLimit: 0
      template:
        spec:
          restartPolicy: Never
          serviceAccountName: xxxxxxxxxx
          containers:
            - name: yyyyyyyyyyyyy
              image: eu.gcr.io/xxxxxxxxxxxxxxxxxxxxxxxx:v1.4
              resources:
                requests:
                  memory: "512Mi"
                  cpu: 1
                limits:
                  memory: "1024Mi"
                  cpu: 2

I am using kustomize k8s , GKE , python sendgrid api

thank you for your support

kubernetesgoogle-kubernetes-enginekubernetes-ingresssendgridkubernetes-cronjob


Solution 1:[1]

To communicate from/to sendgrid , you need to add dns confs so that sendgrid api will be recognized , you need to open port (pod level) , I abandoned the sendgrid and I used the company's smtp server.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 itIsNaz

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