Install Zabbix On Kubernetes Using Helm
Zabbix is an open-source monitoring tool used to monitor servers, networks, applications, and services. It enables IT administrators to track performance, detect issues, and receive alerts in real-time. This is an installation of Zabbix monitoring in a Kubernetes cluster. This installation uses Helm and And ensure that the Ingress NGINX Controller is installed on the Kubernetes cluster.
First, install Helm on the Kubernetes cluster. Here’s a step-by-step guide from Helm Documentation.
After installing Helm, create a namespace for Zabbix using the following command:
$ sudo kubectl create ns zabbix
Next, create PV and PVC for Zabbix server and PostgreSQL.
$ sudo vi pv-pvc-zabbix-server.yml
apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-zabbix-server
spec:
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: ""
persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-zabbix-server
namespace: zabbix
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
$ sudo vi pv-pvc-postgresql.yml
apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-zabbix-postgresql
spec:
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: ""
persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-zabbix-postgresql
namespace: zabbix
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
Then apply the PV and PVC for Zabbix server and PostgreSQL
$ sudo kubectl apply -f pv-pvc-zabbix-server.yml
$ sudo kubectl apply -f pv-pvc-postgresql.yml
Then, create a values.yml file. The values.yml file is a configuration file used to set deployment parameters for Zabbix in Kubernetes, especially when using Helm for deployment. If this configuration is executed through Helm, the values.yml file will be used to customize the Zabbix installation according to requirements, particularly concerning persistent storage for the Zabbix server component and the PostgreSQL database.
$ sudo vi values.yml
zabbixServer:
persistence:
enabled: true
existingClaim: pvc-zabbix-server
accessModes:
- ReadWriteOnce
size: 10Gi
storageClass: ""
postgresql:
primary:
persistence:
enabled: true
existingClaim: pvc-zabbix-postgresql
accessModes:
- ReadWriteOnce
size: 10Gi
storageClass: ""
Now, download the Zabbix repository from Helm and begin the installation of Zabbix.
$ sudo helm repo add bitnami https://charts.bitnami.com/bitnami
$ sudo helm repo update
$ sudo helm search repo zabbix
$ sudo helm install zabbix zabbix/zabbix -n zabbix values.yml
Then, apply the patch to the Zabbix server and PostgreSQL. This patch aims to ensure that the data for Zabbix and PostgreSQL is stored persistently, so it remains intact even during restarts or pod migrations, which is crucial for maintaining the application's continuity.
for zabbix server:
$ sudo kubectl patch deployment zabbix-zabbix-server -n zabbix --patch '
spec:
template:
spec:
volumes:
- name: zabbix-server-volume
persistentVolumeClaim:
claimName: pvc-zabbix-server
containers:
- name: zabbix-server
volumeMounts:
- name: zabbix-server-volume
mountPath: /var/lib/zabbix
'
for zabbix-postgresql:
$ sudo kubectl patch statefulset zabbix-postgresql -n zabbix --patch '
spec:
template:
spec:
volumes:
- name: postgresql-volume
persistentVolumeClaim:
claimName: pvc-zabbix-postgresql
containers:
- name: postgresql
volumeMounts:
- name: postgresql-volume
mountPath: /var/lib/postgresql/data
'
Next, create a secret for SSL and configure the ingress as a load balancer.
$ sudo kubectl create secret tls zabbix-tls --namespace zabbix --key inetmede.key --cert inetmede.crt
$ vi ingress-zabbix.yml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: zabbix-ingress
namespace: zabbix
annotations:
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
nginx.ingress.kubernetes.io/secure-backends: "true"
spec:
ingressClassName: nginx
tls:
- hosts:
- zabbix.inetmede.com
secretName: zabbix-tls
rules:
- host: zabbix.inetmede.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: zabbix-zabbix-web
port:
number: 80
Then apply the Zabbix ingress.
$ sudo kubectl apply -f ingress-zabbix.yml
After applying the Ingress, check the installed Zabbix pods, services and ingress.
$ sudo kubectl get pods,svc,ing -n zabbix -owide
Access your Zabbix server from browser https://your-domain.com, default username Admin and password zabbix.
