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Dmitry Romanoff

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Setting Up MySQL on Kubernetes with Prometheus & Grafana Monitoring

Setting Up MySQL on Kubernetes with Prometheus & Grafana Monitoring

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4 min read

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How to Set Up Prometheus Exporters for PostgreSQL and MongoDB in Kubernetes

How to Set Up Prometheus Exporters for PostgreSQL and MongoDB in Kubernetes

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3 min read
Deploying PostgreSQL, MySQL, and MongoDB on Kubernetes: A Step-by-Step Guide

Deploying PostgreSQL, MySQL, and MongoDB on Kubernetes: A Step-by-Step Guide

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4 min read
Demonstrating Persistence vs. Non-Persistence in Kubernetes with MongoDB

Demonstrating Persistence vs. Non-Persistence in Kubernetes with MongoDB

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3 min read
Diving into Prometheus: Monitoring and Alerting System

Diving into Prometheus: Monitoring and Alerting System

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2 min read
Getting Started with MongoDB Compass: A GUI for MongoDB

Getting Started with MongoDB Compass: A GUI for MongoDB

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2 min read
Deploying a MongoDB Collection Generator on Kubernetes

Deploying a MongoDB Collection Generator on Kubernetes

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3 min read
Understanding and Optimizing AWS RDS Performance Using Performance Insights

Understanding and Optimizing AWS RDS Performance Using Performance Insights

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3 min read
Automating PostgreSQL Table Monitoring with Bash

Automating PostgreSQL Table Monitoring with Bash

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4 min read
Finding Tables Without Primary Keys in PostgreSQL Databases

Finding Tables Without Primary Keys in PostgreSQL Databases

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4 min read
Identifying Unused Indexes in PostgreSQL: A Bash Script Solution

Identifying Unused Indexes in PostgreSQL: A Bash Script Solution

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4 min read
Understanding CrashLoopBackOff in Kubernetes: A Case Study of Two Python Scripts

Understanding CrashLoopBackOff in Kubernetes: A Case Study of Two Python Scripts

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2 min read
How to Install K9s on Ubuntu: A Step-by-Step Guide

How to Install K9s on Ubuntu: A Step-by-Step Guide

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2 min read
Load Testing PostgreSQL on Kubernetes: A YAML-Only Approach

Load Testing PostgreSQL on Kubernetes: A YAML-Only Approach

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3 min read
Troubleshooting a CrashLoopBackOff status in Kubernetes

Troubleshooting a CrashLoopBackOff status in Kubernetes

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2 min read
Python code that generates a stock price chart for the last n days.

Python code that generates a stock price chart for the last n days.

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4 min read
Simulating Database Operations with PostgreSQL on Kubernetes

Simulating Database Operations with PostgreSQL on Kubernetes

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3 min read
Resolving Docker Push Errors: "Denied: Requested Access to the Resource is Denied"

Resolving Docker Push Errors: "Denied: Requested Access to the Resource is Denied"

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2 min read
How to Deploy a Redis Cluster in Kubernetes

How to Deploy a Redis Cluster in Kubernetes

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2 min read
The Strength of Vertica DB: A Case Study in Sales Analytics

The Strength of Vertica DB: A Case Study in Sales Analytics

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Populating a Vertica Database with Random Data

Populating a Vertica Database with Random Data

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4 min read
Installing Vertica on a Single-Node Kubernetes Cluster Using Minikube

Installing Vertica on a Single-Node Kubernetes Cluster Using Minikube

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2 min read
How to Install Vertica DB Client (vsql) on Ubuntu 24.04

How to Install Vertica DB Client (vsql) on Ubuntu 24.04

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2 min read
How to Install Minikube on Ubuntu 24.04

How to Install Minikube on Ubuntu 24.04

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2 min read
DevOps. Monitoring Databases. On-Premise and Cloud environments.

DevOps. Monitoring Databases. On-Premise and Cloud environments.

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1 min read
Creating a Professional-Quality Slideshow with Python: A Guide to Building Your Own iMovie Alternative

Creating a Professional-Quality Slideshow with Python: A Guide to Building Your Own iMovie Alternative

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6 min read
How to Run an Application In A Docker Container: A Step-by-Step Guide

How to Run an Application In A Docker Container: A Step-by-Step Guide

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Creating Dynamic Audio Narratives: A Guide to Combining Text-to-Speech and Music Using Python

Creating Dynamic Audio Narratives: A Guide to Combining Text-to-Speech and Music Using Python

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3 min read
Visualizing Options Flow with Python: A Step-by-Step Guide

Visualizing Options Flow with Python: A Step-by-Step Guide

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Automate Foreign Key Index Checks in PostgreSQL: A Practical Bash Script

Automate Foreign Key Index Checks in PostgreSQL: A Practical Bash Script

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5 min read
Optimizing PostgreSQL Buffer Cache: Automating Analysis with a Bash Script

Optimizing PostgreSQL Buffer Cache: Automating Analysis with a Bash Script

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4 min read
How to Automate Image Downloading with Python: A Comprehensive Guide

How to Automate Image Downloading with Python: A Comprehensive Guide

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3 min read
Monitoring and Managing AWS RDS Snapshot Storage Across All Regions

Monitoring and Managing AWS RDS Snapshot Storage Across All Regions

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3 min read
Understanding Recursive Queries in PostgreSQL: A Process Hierarchy Example

Understanding Recursive Queries in PostgreSQL: A Process Hierarchy Example

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3 min read
“docker.errors.DockerException: Error while fetching server API version: Not supported URL scheme http+docker”

“docker.errors.DockerException: Error while fetching server API version: Not supported URL scheme http+docker”

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Automating Database Health Checks with Python: A Step-by-Step Guide

Automating Database Health Checks with Python: A Step-by-Step Guide

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Efficiently Managing AWS Unattached Volumes with a Shell Script

Efficiently Managing AWS Unattached Volumes with a Shell Script

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2 min read
How to Check Fragmentation in an Oracle Database

How to Check Fragmentation in an Oracle Database

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4 min read
PostgreSQL. “Fatal error: failed to delete Postgres user.”

PostgreSQL. “Fatal error: failed to delete Postgres user.”

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PostgreSQL. How to move old historical records from your main table to a separate table?

PostgreSQL. How to move old historical records from your main table to a separate table?

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AWS Aurora Global Database

AWS Aurora Global Database

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Optimizing MySQL Database Performance: Identifying and Managing Long Queries

Optimizing MySQL Database Performance: Identifying and Managing Long Queries

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4 min read
Python. Flipping Calendars.

Python. Flipping Calendars.

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4 min read
Python. Exploring MySQL Table Sizes.

Python. Exploring MySQL Table Sizes.

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1 min read
How the presence of indexes and the size of tables affect the choice of execution plan when joining tables in PostgreSQL?

How the presence of indexes and the size of tables affect the choice of execution plan when joining tables in PostgreSQL?

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7 min read
Populating a table in PostgreSQL with one million records of random data.

Populating a table in PostgreSQL with one million records of random data.

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1 min read
The main methods of joining tables in PostgreSQL.

The main methods of joining tables in PostgreSQL.

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3 min read
The ARRAY_TO_STRING() function in PostgreSQL

The ARRAY_TO_STRING() function in PostgreSQL

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2 min read
How do you check a distribution of values that PostgreSQL has collected on some column of a table?

How do you check a distribution of values that PostgreSQL has collected on some column of a table?

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2 min read
Python code to know the zodiac sign based on the provided birthday.

Python code to know the zodiac sign based on the provided birthday.

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2 min read
Python code that inserts a large number of records into a MySQL table.

Python code that inserts a large number of records into a MySQL table.

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2 min read
Python. Automating creation backups of MySQL database.

Python. Automating creation backups of MySQL database.

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4 min read
How to calculate the distance between Kyoto and Tokyo using a PostgreSQL database?

How to calculate the distance between Kyoto and Tokyo using a PostgreSQL database?

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DevOps. Monitoring Databases. On-Premise and Cloud Environments.

DevOps. Monitoring Databases. On-Premise and Cloud Environments.

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1 min read
PostgreSQL: Deleting all records from a table, except for the first and last ones.

PostgreSQL: Deleting all records from a table, except for the first and last ones.

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2 min read
How to find the third and fifth-highest values in a PostgreSQL table?

How to find the third and fifth-highest values in a PostgreSQL table?

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2 min read
Understanding of NULL in PostgreSQL database.

Understanding of NULL in PostgreSQL database.

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How to join tables in PostgreSQL using the WITH clause?

How to join tables in PostgreSQL using the WITH clause?

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2 min read
PostgreSQL. How to check connections that are not using SSL encryption?

PostgreSQL. How to check connections that are not using SSL encryption?

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Statistical information about tables in a PostgreSQL Database.

Statistical information about tables in a PostgreSQL Database.

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