Deploy Nagios on Kubernetes Kodekloud

 

Question: The Nautilus DevOps team is planning to set up a Nagios monitoring tool to monitor some applications, services etc. They are planning to deploy it on Kubernetes cluster. Below you can find more details.

1) Create a deployment nagios-deployment for Nagios core. The container name must be nagios-container and it must use jasonrivers/nagios image.

2) Create a user and password for the Nagios core web interface, user must be xFusionCorp and password must be LQfKeWWxWD. (you can manually perform this step after deployment)

3) Create a service nagios-service for Nagios, which must be of targetPort type. nodePort must be 30008.

You can use any labels as per your choice.

Note: The kubectl on jump_host has been configured to work with the kubernetes cluster.


Solution:

Create deployment.yaml and service.yaml according to question

vi deployment.yaml

apiVersion: apps/v1

kind: Deployment

metadata:

name: nagios-deployment

spec:

replicas: 1

selector:

matchLabels:

app: nagios-core

template:

metadata:

labels:

app: nagios-core

spec:

containers:

- name: nagios-container

image: jasonrivers/nagios

 vi service.yaml

apiVersion: v1

kind: Service

metadata:

name: nagios-service

spec:

type: NodePort

selector:

app: nagios-core

ports:

- port: 80

targetPort: 80

nodePort: 30008

Then apply 

kubectl apply -f .

Next, exec into pod

kubectl exec -it pod-name /bin/bash

Create the username and password according to question

htpasswd /opt/nagios/etc/htpasswd.users xFusionCorp

Finally, Click on Nagios button from the right side. You can see the nagios dashboard.

 

 

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About Ashadullah Shawon

I am Ashadullah Shawon. I am a Software Engineer. I studied Computer Science and Engineering (CSE) at RUET. I Like To Share Knowledge. Learn More: Click Here