diegofcornejo

use scylla::{SessionBuilder, IntoTypedRows};
use std::error::Error;
use std::env;
use std::time::Instant;
use dotenv::dotenv;

const QUERY_LIMIT: i32 = 5000;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {

diegofcornejo

const cassandra = require('cassandra-driver');
const CASSANDRA_HOST = process.env.CASSANDRA_HOST || 'localhost';
const CASSANDRA_NODES = [`${CASSANDRA_HOST}:9042`, `${CASSANDRA_HOST}:9043`, `${CASSANDRA_HOST}:9044`]
const CASSANDRA_USER = process.env.CASSANDRA_USER || 'cassandra';
const CASSANDRA_PASSWORD = process.env.CASSANDRA_PASSWORD || 'cassandra';
const CASSANDRA_DATA_CENTER = process.env.CASSANDRA_DATA_CENTER || 'datacenter1';
const KEYSPACE = 'mykeyspace';
const TABLE = 'event';
const QUERY_LIMIT = 50000;
const FETCH_SIZE = 5000;

diegofcornejo

Cassandra Cluster with Docker Compose

This project sets up a multi-node Cassandra cluster using Docker Compose. The configuration includes three Cassandra nodes with a centralized logging setup using Loki.

Prerequisites

• Docker
• Docker Compose

Project Structure

diegofcornejo

#!/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>"

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.

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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"
 }

diegofcornejo

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)

diegofcornejo

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

diegofcornejo

                                                            
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diegofcornejo

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

Prerequisites

1. 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