Diego Cornejo diegofcornejo

Setting Up a Monitoring Stack with Grafana, Prometheus, Node Exporter, cAdvisor and Loki in Docker Compose, Exposed via NGINX

This guide provides instructions on setting up a comprehensive monitoring stack using Grafana, Prometheus, Node Exporter, cAdvisor and Loki. These components are orchestrated with Docker Compose and exposed via an NGINX reverse proxy, making them accessible through a single domain.

Components

Grafana: The analytics and monitoring solution with support for multiple data sources, including Prometheus.
Prometheus: The monitoring and alerting toolkit, collecting metrics from configured targets at specified intervals.
Node Exporter: A Prometheus exporter for hardware and OS metrics exposed by *NIX kernels.
cAdvisor: Analyzes resource usage and performance characteristics of running containers.

Create repository for snapshots

The location is the path where the snapshots will be stored, this path need to be set in the elasticsearch.yml file in the path.repo property
example: path.repo: ["/usr/share/elasticsearch/backup"]
After setting the path.repo property in the elasticsearch.yml file, restart the elasticsearch service

curl -XPUT -k -u elastic:changeme "https://localhost:9200/_snapshot/repository_backups" -H 'Content-Type: application/json' -d '{
  "type": "fs",
  "settings": {
    "location": "/usr/share/elasticsearch/backup"
 }

Kubernetes: Load multiple config files

Add this line in your .bashr or .zshrc

## Kubernetes: Load config files dinamically (conf.yml)
export KUBECONFIG=$(find $HOME/.kube -name "*.conf.yml" -print0 | tr '\0' ':' | sed 's/:$//')

Then reload it

Install Oracle WebLogic Server 14c (14.1.1.0) on RHEL 9.3 (AWS EC2)

Prerequisites

Create Swap Space

[ec2-user@hostname ~] sudo su -
[root@hostname ~] dd if=/dev/zero of=/swapfile bs=1M count=1024
[root@hostname ~] chmod 600 /swapfile
[root@hostname ~] mkswap /swapfile

Systemd Service Examples

Add a new service to systemd

sudo nano /etc/systemd/system/my-service.service

NOTE: And add the following content from section Service File Examples

	name: cassandra-cluster

	services:
	cassandra-node1:
	image: bitnami/cassandra:latest
	container_name: cassandra-node1
	networks:
	- cassandra-network
	ports:
	- "9042:9042"

	#!/bin/bash

	# Constants
	S3_BUCKET="<YOUR_BUCKET_NAME>"
	HOST_NAME="$(hostname)"
	DATE=$(date +%F-%H%M%S) # Format as 'YYYY-MM-DD-HHMMSS'
	MAX_BACKUPS=5
	AWS_PROFILE="<YOUR_AWS_PROFILE>"
	R2_ACCOUNT_ID="<YOUR_R2_ACCOUNT_ID>"

	version: 0.2

	phases:
	pre_build:
	commands:
	- echo Logging in to Amazon ECR...
	- aws --version
	- aws ecr get-login-password --region $AWS_DEFAULT_REGION \| docker login --username AWS --password-stdin $AWS_ACCOUNT_ID.dkr.ecr.$AWS_DEFAULT_REGION.amazonaws.com
	- REPOSITORY_URI=$AWS_ACCOUNT_ID.dkr.ecr.$AWS_DEFAULT_REGION.amazonaws.com/$IMAGE_REPO_NAME
	- COMMIT_HASH=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION \| cut -c 1-7)


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	name: Deploy to S3 and Invalidate CloudFront Cache

	on:
	push:
	branches:
	- main
	- develop

	jobs:
	build-and-deploy: