Monitor PostgreSQL with Grafana Dashboard in Amazon Elastic Kubernetes Service (Amazon EKS)


KubeDB is the Kubernetes Native Database Management Solution which simplifies and automates routine database tasks such as Provisioning, Monitoring, Upgrading, Patching, Scaling, Volume Expansion, Backup, Recovery, Failure detection, and Repair for various popular databases on private and public clouds. The databases that KubeDB supports are MySQL, MongoDB, MariaDB, Elasticsearch, Redis, PostgreSQL, ProxySQL, Percona XtraDB, Memcached and PgBouncer. You can find the guides to all the supported databases in KubeDB . And Panopticon is a generic state metrics exporter for Kubernetes resources. It can generate Prometheus metrics from both Kubernetes native and custom resources. Generated metrics are exposed in /metrics path for the Prometheus server to scrape. In this tutorial we will Monitor PostgreSQL with Grafana Dashboard in Amazon Elastic Kubernetes Service (Amazon EKS). We will cover the following steps:

  1. Install KubeDB
  2. Install Prometheus Stack
  3. Install Panopticon
  4. Deploy PostgreSQL Clustered Database
  5. Monitor with Grafana Dashboard

Get Cluster ID

We need the cluster ID to get the KubeDB License. To get cluster ID we can run the following command:

$ kubectl get ns kube-system -o jsonpath='{.metadata.uid}'

Get License

Go to Appscode License Server to get the license.txt file. For this tutorial we will use KubeDB Enterprise Edition.

License Server

Install KubeDB

We will use helm to install KubeDB. Please install helm here if it is not already installed. Now, let’s install KubeDB.

$ helm repo add appscode
$ helm repo update

$ helm search repo appscode/kubedb
NAME                              	CHART VERSION	APP VERSION	DESCRIPTION                                       
appscode/kubedb                   	v2023.04.10  	v2023.04.10	KubeDB by AppsCode - Production ready databases...
appscode/kubedb-autoscaler        	v0.18.0      	v0.18.1    	KubeDB Autoscaler by AppsCode - Autoscale KubeD...
appscode/kubedb-catalog           	v2023.04.10  	v2023.04.10	KubeDB Catalog by AppsCode - Catalog for databa...
appscode/kubedb-community         	v0.24.2      	v0.24.2    	KubeDB Community by AppsCode - Community featur...
appscode/kubedb-crds              	v2023.04.10  	v2023.04.10	KubeDB Custom Resource Definitions                
appscode/kubedb-dashboard         	v0.9.0       	v0.9.1     	KubeDB Dashboard by AppsCode                      
appscode/kubedb-enterprise        	v0.11.2      	v0.11.2    	KubeDB Enterprise by AppsCode - Enterprise feat...
appscode/kubedb-grafana-dashboards	v2023.04.10  	v2023.04.10	A Helm chart for kubedb-grafana-dashboards by A...
appscode/kubedb-metrics           	v2023.04.10  	v2023.04.10	KubeDB State Metrics                              
appscode/kubedb-one               	v2023.04.10  	v2023.04.10	KubeDB and Stash by AppsCode - Production ready...
appscode/kubedb-ops-manager       	v0.20.0      	v0.20.1    	KubeDB Ops Manager by AppsCode - Enterprise fea...
appscode/kubedb-opscenter         	v2023.04.10  	v2023.04.10	KubeDB Opscenter by AppsCode                      
appscode/kubedb-provisioner       	v0.33.0      	v0.33.1    	KubeDB Provisioner by AppsCode - Community feat...
appscode/kubedb-schema-manager    	v0.9.0       	v0.9.1     	KubeDB Schema Manager by AppsCode                 
appscode/kubedb-ui                	v2023.03.23  	0.3.28     	A Helm chart for Kubernetes                       
appscode/kubedb-ui-server         	v2021.12.21  	v2021.12.21	A Helm chart for kubedb-ui-server by AppsCode     
appscode/kubedb-webhook-server    	v0.9.0       	v0.9.1     	KubeDB Webhook Server by AppsCode  

# Install KubeDB Enterprise operator chart
$ helm install kubedb appscode/kubedb \
  --version v2023.04.10 \
  --namespace kubedb --create-namespace \
  --set kubedb-provisioner.enabled=true \
  --set kubedb-ops-manager.enabled=true \
  --set kubedb-autoscaler.enabled=true \
  --set kubedb-dashboard.enabled=true \
  --set kubedb-schema-manager.enabled=true \
  --set-file global.license=/path/to/the/license.txt

Let’s verify the installation:

$ watch kubectl get pods --all-namespaces -l ""

NAMESPACE   NAME                                            READY   STATUS    RESTARTS   AGE
kubedb      kubedb-kubedb-autoscaler-6f489c85cd-qr5kb       1/1     Running   0          2m20s
kubedb      kubedb-kubedb-dashboard-6f7f59c498-2jvql        1/1     Running   0          2m20s
kubedb      kubedb-kubedb-ops-manager-797c8fc648-vcsxx      1/1     Running   0          2m20s
kubedb      kubedb-kubedb-provisioner-688fcfd4bd-8mjts      1/1     Running   0          2m20s
kubedb      kubedb-kubedb-schema-manager-854c9dbf58-cpsp7   1/1     Running   0          2m20s
kubedb      kubedb-kubedb-webhook-server-647bf447f8-d4zx9   1/1     Running   0          2m20s

We can list the CRD Groups that have been registered by the operator by running the following command:

$ kubectl get crd -l
NAME                                              CREATED AT   2023-05-23T06:16:51Z      2023-05-23T06:16:52Z                        2023-05-23T06:16:52Z           2023-05-23T06:16:57Z          2023-05-23T06:14:22Z                                  2023-05-23T06:16:58Z                   2023-05-23T06:14:23Z                                 2023-05-23T06:17:08Z                  2023-05-23T06:14:23Z         2023-05-23T06:16:51Z                2023-05-23T06:17:00Z                 2023-05-23T06:17:16Z                               2023-05-23T06:16:59Z                2023-05-23T06:14:23Z                             2023-05-23T06:16:59Z              2023-05-23T06:14:23Z         2023-05-23T06:16:51Z                2023-05-23T06:16:58Z                 2023-05-23T06:17:01Z                               2023-05-23T06:16:58Z                2023-05-23T06:14:24Z           2023-05-23T06:16:51Z                  2023-05-23T06:16:57Z                   2023-05-23T06:17:12Z                                 2023-05-23T06:16:57Z                  2023-05-23T06:14:24Z   2023-05-23T06:16:51Z           2023-05-23T06:17:29Z                         2023-05-23T06:17:06Z          2023-05-23T06:14:24Z                             2023-05-23T06:17:06Z              2023-05-23T06:14:25Z        2023-05-23T06:16:51Z               2023-05-23T06:16:59Z                             2023-05-23T06:16:59Z                2023-05-23T06:17:23Z               2023-05-23T06:14:25Z        2023-05-23T06:16:51Z                2023-05-23T06:17:26Z                              2023-05-23T06:17:07Z               2023-05-23T06:14:25Z                    2023-05-23T06:17:39Z           2023-05-23T06:16:51Z                                2023-05-23T06:17:07Z                   2023-05-23T06:17:19Z   2023-05-23T06:16:51Z           2023-05-23T06:17:33Z                         2023-05-23T06:17:07Z                  2023-05-23T06:14:26Z                   2023-05-23T06:17:42Z

Install Prometheus Stack

Install Prometheus stack if you haven’t done it already. You can use kube-prometheus-stack which installs the necessary components required for the PostgreSQL Grafana dashboards.

Install Panopticon

KubeDB Enterprise License works for Panopticon too. So, we will use the same license that we have already obtained.

$ helm install panopticon appscode/panopticon -n kubeops \
    --create-namespace \
    --set monitoring.enabled=true \
    --set \
    --set monitoring.serviceMonitor.labels.release=prometheus \
    --set-file license=/path/to/license.txt

Let’s verify the installation:

$ watch kubectl get pods --all-namespaces -l ""
NAMESPACE   NAME                          READY   STATUS    RESTARTS   AGE
kubeops     panopticon-5cb5b56bdf-kpbhr   1/1     Running   0          99s

Deploy PostgreSQL Clustered Database

Now, we are going to Deploy PostgreSQL with monitoring enabled using KubeDB. First, let’s create a Namespace in which we will deploy the database.

$ kubectl create namespace demo
namespace/demo created

Here is the yaml of the PostgreSQL CRO we are going to use:

kind: Postgres
  name: postgres-cluster
  namespace: demo
  version: "15.1"
  replicas: 3
  standbyMode: Hot
  storageType: Durable
    storageClassName: "gp2"
      - ReadWriteOnce
        storage: 1Gi
          release: prometheus
        interval: 10s
  terminationPolicy: WipeOut

Let’s save this yaml configuration into postgres-cluster.yaml Then create the above PostgreSQL CRO

$ kubectl apply -f postgres-cluster.yaml created

In this yaml,

  • spec.version field specifies the version of PostgreSQL. Here, we are using PostgreSQL version 15.1. You can list the KubeDB supported versions of PostgreSQL by running $ kubectl get postgresversion command.
  • specifies PVC spec that will be dynamically allocated to store data for this database. This storage spec will be passed to the StatefulSet created by KubeDB operator to run database pods. You can specify any StorageClass available in your cluster with appropriate resource requests.
  • spec.monitor.agent: indicates that we are going to monitor this server using Prometheus operator.
  • spec.monitor.prometheus.serviceMonitor.labels specifies the release name that KubeDB should use in ServiceMonitor.
  • spec.monitor.prometheus.interval defines that the Prometheus server should scrape metrics from this database with 10 seconds interval.
  • And the spec.terminationPolicy field is Wipeout means that the database will be deleted without restrictions. It can also be “Halt”, “Delete” and “DoNotTerminate”. Learn More about these checkout Termination Policy .

Once these are handled correctly and the PostgreSQL object is deployed, you will see that the following objects are created:

$ kubectl get all -n demo -l ''
NAME                     READY   STATUS    RESTARTS   AGE
pod/postgres-cluster-0   3/3     Running   0          3m35s
pod/postgres-cluster-1   3/3     Running   0          3m14s
pod/postgres-cluster-2   3/3     Running   0          2m48s

NAME                               TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
service/postgres-cluster           ClusterIP     <none>        5432/TCP,2379/TCP            3m38s
service/postgres-cluster-pods      ClusterIP   None             <none>        5432/TCP,2380/TCP,2379/TCP   3m38s
service/postgres-cluster-standby   ClusterIP   <none>        5432/TCP                     3m38s
service/postgres-cluster-stats     ClusterIP   <none>        56790/TCP,23790/TCP          3m37s

NAME                                READY   AGE
statefulset.apps/postgres-cluster   3/3     3m41s

NAME                                                  TYPE                  VERSION   AGE   15.1      3m45s

Let’s check if the database is ready to use,

$ kubectl get postgres -n demo postgres-cluster
NAME               VERSION   STATUS   AGE
postgres-cluster   15.1      Ready    4m39s

We have successfully deployed PostgreSQL in AWS.

Create DB Metrics Configurations

First, you have to create a MetricsConfiguration object for database. This MetricsConfiguration object is used by Panopticon to generate metrics for DB instances. Install kubedb-metrics charts which will create the MetricsConfiguration object for DB:

$ helm search repo appscode/kubedb-metrics --version=v2023.04.10
$ helm install kubedb-metrics appscode/kubedb-metrics -n kubedb --version=v2023.04.10

Import Grafana Dashboard

Here, we will port-forward the prometheus-grafana service to access Grafana Dashboard from UI.

$ kubectl get service -n default
NAME                                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
alertmanager-operated                     ClusterIP   None             <none>        9093/TCP,9094/TCP,9094/UDP   13m
kubernetes                                ClusterIP       <none>        443/TCP                      90m
prometheus-grafana                        ClusterIP     <none>        80/TCP                       13m
prometheus-kube-prometheus-alertmanager   ClusterIP    <none>        9093/TCP                     13m
prometheus-kube-prometheus-operator       ClusterIP    <none>        443/TCP                      13m
prometheus-kube-prometheus-prometheus     ClusterIP    <none>        9090/TCP                     13m
prometheus-kube-state-metrics             ClusterIP    <none>        8080/TCP                     13m
prometheus-operated                       ClusterIP   None             <none>        9090/TCP                     13m
prometheus-prometheus-node-exporter       ClusterIP   <none>        9100/TCP                     13m

To access Grafana UI Let’s port-forward prometheus-grafana service to 3063

$ kubectl port-forward -n default service/prometheus-grafana 3063:80
Forwarding from -> 3000
Forwarding from [::1]:3063 -> 3000
Handling connection for 3063

Now, Go to http://localhost:3063/ you will see a login panel of the Grafana UI, use default credential admin as the Username and as the Password.

Grafana Login

After logged in successfuly on Grafana UI, import the json files of dashboards given below according to your choice.

Select Import button from left bar of the Grafana UI

Import Dashboard

Upload the json file or copy-paste the json codes to the panel json and hit the load button:

Upload Json

For PostgreSQL Database Dashboard use PostgreSQL Database Dashboard Json

For PostgreSQL Summary use PostgreSQL Summary Json

For PostgreSQL Pod use PostgreSQL Pod Json

If you followed above instruction properly you will see PostgreSQL Grafana Dashboards in your Grafana UI

Here are some screenshots of our PostgreSQL deployment. You can visualize every single component supported by Grafana, checkout Grafana Dashboard for more information.

Sample UI 1

Sample UI 2

Sample UI 3

If you want to learn more about Production-Grade PostgreSQL you can have a look into that playlist below:


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More about PostgreSQL in Kubernetes

If you have found a bug with KubeDB or want to request for new features, please file an issue .


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