Category linux

linux

Migrate ISPConfig 3 Mail User Passwords to Zimbra

Step-by-step guide to exporting mail user passwords from ISPConfig 3 MySQL database and importing them into Zimbra using...

Ned · Dec 15

linux

MegaCLI Cheat Sheet: Essential RAID Management Commands

Quick reference guide for MegaCLI commands to manage LSI RAID controllers, including virtual drives, physical disks, battery status,...

Ned · Dec 15

linux

Build Your Own .deb Packages with Checkinstall on Debian

How to create custom .deb packages on Debian using checkinstall when pre-built packages are unavailable, with a practical...

Ned · Dec 15

linux

Automatic Installation of Security Patches on Debian

Set up unattended-upgrades on Debian to automatically install security patches, keeping your Linux server protected without manual intervention....

Ned · Dec 15

linux

LVM2 Setup Guide: Create and Manage Logical Volumes on Linux

Learn how to set up LVM2 on Linux, including creating physical volumes, volume groups, logical volumes, and managing...

Ned · Dec 4

linux

Zimbra Email Server Cheat Sheet: Essential Commands and Configuration

A comprehensive Zimbra mail server reference guide covering mailbox management, queue handling, SSL certificates, backup, and troubleshooting commands....

Ned · Dec 2

linux

How to Back Up MySQL Databases with Rsnapshot

Configure Rsnapshot to automatically back up MySQL databases using backup scripts, ensuring reliable and incremental database snapshots on...

Ned · May 9

linux

Rsnapshot Tutorial: How to Archive and Manage Filesystem Snapshots

Step-by-step guide to archiving filesystem snapshots with Rsnapshot, including configuration, scheduling, and best practices for Linux backup management....

Ned · Apr 29

linux

Nginx Catch-All Host As Front End To Apache For ISPConfig 3 On Debian

Learn how to configure Nginx as a reverse proxy catch-all host in front of Apache for ISPConfig 3...

Ned · Jan 28

Category security

security

Detecting Malicious Software: A Guide to Finding Malware Scripts on Linux Servers

Comprehensive guide to detecting and removing malware on Linux servers using Linux Malware Detect (LMD) and ClamAV, with...

Ned · Jan 17

linux

Automatic Installation of Security Patches on Debian

Set up unattended-upgrades on Debian to automatically install security patches, keeping your Linux server protected without manual intervention....

Ned · Dec 15

Category ruby

ruby

Mastering Automated Deployments: A Step-by-Step Guide to Deploying with Capistrano

Complete guide to setting up Capistrano for automated Ruby app deployments, including SSH configuration, deploy scripts, and multi-stage...

Ned · Jan 1

ruby

Mastering Getter and Setter Methods in Ruby: Enhance Your Object-Oriented Programming

Learn how Ruby's attr_reader, attr_writer, and attr_accessor simplify getter and setter methods, with practical examples for clean object-oriented...

Ned · Jul 9

Category capistrano

ruby

Mastering Automated Deployments: A Step-by-Step Guide to Deploying with Capistrano

Complete guide to setting up Capistrano for automated Ruby app deployments, including SSH configuration, deploy scripts, and multi-stage...

Ned · Jan 1

Category wordpress

wordpress

Boost Your WordPress Site's Performance: Eliminate Comment Spam and Improve Speed with This One-Command Solution!

Delete hundreds of thousands of WordPress spam comments instantly using wp-cli, reclaim database space, and dramatically improve your...

Ned · Jan 25

wordpress

Unlocking Your WordPress Site: Leveraging wp-cli for Swift Recovery After a Hack

Step-by-step recovery guide for hacked WordPress sites using wp-cli commands to reset passwords, update plugins, scan for malware,...

Ned · Jan 13

Category hacked

wordpress

Unlocking Your WordPress Site: Leveraging wp-cli for Swift Recovery After a Hack

Step-by-step recovery guide for hacked WordPress sites using wp-cli commands to reset passwords, update plugins, scan for malware,...

Ned · Jan 13

Category malware

security

Detecting Malicious Software: A Guide to Finding Malware Scripts on Linux Servers

Comprehensive guide to detecting and removing malware on Linux servers using Linux Malware Detect (LMD) and ClamAV, with...

Ned · Jan 17

Category aws

aws

Unlock 750 Hours of Free AWS EC2 Usage: A Guide for All Customers

Discover how both new and existing AWS customers can get 750 hours of free EC2 usage with Graviton-powered...

Ned · Jan 19

Category ec2

aws

Unlock 750 Hours of Free AWS EC2 Usage: A Guide for All Customers

Discover how both new and existing AWS customers can get 750 hours of free EC2 usage with Graviton-powered...

Ned · Jan 19

Category spam

wordpress

Boost Your WordPress Site's Performance: Eliminate Comment Spam and Improve Speed with This One-Command Solution!

Delete hundreds of thousands of WordPress spam comments instantly using wp-cli, reclaim database space, and dramatically improve your...

Ned · Jan 25

Category AWS Cloud and Containerization

AWS Cloud and Containerization

Future of Cloud: Introduction to Containers

Explore how cloud containerization with Docker, Kubernetes, and AWS services like ECS and EKS is shaping the future...

Ned · Jan 28

Category AWS Cloud

AWS Cloud

S3 Select: SQL Queries Against CSV, JSON, and Parquet Objects — Without Downloading Them

Run SQL SELECT statements directly against individual S3 objects, pay only for the bytes scanned and returned, and...

Ned · Jul 25

AWS Cloud

S3 Multipart Upload: Reliably Pushing Large Files (10 GB and Beyond) to S3

Break large objects into parallel parts, upload them concurrently, resume on failure, and assemble a single S3 object...

Ned · Jul 25

AWS Cloud

S3 Multi-Region Access Points: A Single Global Endpoint for Active-Active Applications

Front multiple S3 buckets across Regions with one global MRAP endpoint, route requests to the nearest Region over...

Ned · Jul 25

AWS Cloud

S3 Same-Region Replication (SRR): Aggregating Logs and Meeting Compliance Copy Requirements

Use S3 Same-Region Replication to consolidate account and service logs into a central bucket or produce an immutable...

Ned · Jul 25

AWS Cloud

S3 Cross-Region Replication for Disaster Recovery: Async Copies With Versioning and KMS

Configure S3 Cross-Region Replication to asynchronously copy every new object into a second Region for DR, with versioning,...

Ned · Jul 25

AWS Cloud

S3 Transfer Acceleration: Speeding Up Global Uploads Through CloudFront Edge Locations

Route worldwide S3 uploads through the nearest CloudFront edge and over Amazon's private backbone to a single destination...

Ned · Jul 25

AWS Cloud

S3 Versioning + MFA Delete: Two-Layer Protection Against Accidental Data Loss

Enable S3 versioning to preserve every version of every object, then require MFA authentication to permanently delete any...

Ned · Jul 21

AWS Cloud

CloudFront Signed URLs vs Signed Cookies: When to Use Each for S3-Backed Content

Signed URLs work for clients that cannot use cookies. Signed cookies work for clients that cannot change URLs....

Ned · Jul 21

AWS Cloud

Automated PII Alerting for S3 Uploads with Macie + EventBridge + SNS

Set up an S3 transfer point that runs Amazon Macie against uploaded files, then triggers SNS notifications to...

Ned · Jul 21

AWS Cloud

Amazon Macie: ML-Powered PII Discovery for S3 Data Lakes

Configure Amazon Macie with managed identifiers to automatically detect PII, credit card numbers, passport numbers, and financial data...

Ned · Jul 21

AWS Cloud

Encrypt Millions of Existing S3 Objects Without Re-Uploading: Default Encryption + Batch Operations

Turn on default encryption for future uploads, generate an inventory of unencrypted objects, then use S3 Batch Operations...

Ned · Jul 21

AWS Cloud

S3 Presigned URLs: Uploading Directly from the Browser Without Choking Your Application Servers

Generate short-lived presigned URLs so browsers upload directly to S3, offloading traffic from your application tier and scaling...

Ned · Jul 21

AWS Cloud

aws:PrincipalOrgID: One Bucket Policy That Grants Access to Every Account in Your Organization

Use the aws:PrincipalOrgID condition key to write a single S3 bucket policy that automatically includes every current and...

Ned · Jul 20

AWS Cloud

S3 Block Public Access + SCP: Two Layers That Make Accidental Public Buckets Impossible

Enable account-level S3 Block Public Access, then wrap it with an Organizations SCP that prevents anyone from disabling...

Ned · Jul 20

AWS Cloud

Client-Side Encryption: The Only Way to Encrypt S3 Data Before It Leaves Your Machine

When compliance requires data to be encrypted before upload — not just at rest — server-side encryption is...

Ned · Jul 20

AWS Cloud

S3 Gateway Endpoint for High-Volume Container Workloads: Free vs $1000/Month NAT Fees

Why choosing a free gateway VPC endpoint over an interface endpoint or NAT gateway can save thousands per...

Ned · Jul 20

AWS Cloud

S3 Gateway Endpoint: The Simplest Way to Keep EC2-to-S3 Traffic Off the Internet

Set up an S3 gateway VPC endpoint to route EC2-to-S3 traffic through the AWS backbone instead of the...

Ned · Jul 20

AWS Cloud

Public But Immutable: S3 Object Lock for Untouchable Publicly-Readable Files

Combine S3 versioning, Object Lock retention, static website hosting, and a public read bucket policy to serve files...

Ned · Jul 20

AWS Cloud

The Cheapest, Most Resilient Static Website: Private S3 Bucket + CloudFront OAI

Host static content in a private S3 bucket, serve it globally via CloudFront, and use an Origin Access...

Ned · Jul 19

AWS Cloud

S3 Interface VPC Endpoint: Private Access With Fine-Grained IAM Role Restriction

Deploy an interface VPC endpoint for S3 to keep all API traffic on the AWS network, then use...

Ned · Jul 19

AWS Cloud

PHI-Compliant S3: aws:SecureTransport + SSE-KMS for Encryption in Transit and at Rest

Enforce TLS on all S3 requests with the aws:SecureTransport condition and use SSE-KMS with a customer-managed key so...

Ned · Jul 19

AWS Cloud

Private S3 Access with VPC Endpoints: No Internet, No NAT Gateway, No Public IP

Move EC2 instances to private subnets and connect to S3 through a VPC gateway endpoint. All traffic stays...

Ned · Jul 19

AWS Cloud

CloudFront + OAI + WAF: Locking Down S3 Static Websites at the Edge

Combine CloudFront Origin Access Identity with AWS WAF to route all traffic through the CDN, block direct S3...

Ned · Jul 19

AWS Cloud

SSE-KMS with Automatic Rotation: Encryption, Auditing, and Key Rotation in One Setting

Configure S3 with SSE-KMS and automatic annual key rotation to satisfy encryption at rest, CloudTrail auditing, and rotation...

Ned · Jul 19

AWS Cloud

Apply S3 Object Lock to Existing Data at Scale with Batch Operations

Use S3 Object Lock compliance mode with S3 Batch Operations to apply WORM retention to billions of existing...

Ned · Jul 18

AWS Cloud

Combining S3 Intelligent-Tiering, Lifecycle to Glacier, and Athena for Tiered Data Access

Design a two-stage storage strategy using S3 Intelligent-Tiering for the first year and Glacier Flexible Retrieval for archives,...

Ned · Jul 18

AWS Cloud

S3 Object Lock Compliance Mode: Immutable Data Retention That Even Root Cannot Override

Use S3 Object Lock in compliance mode for WORM protection that prevents anyone — including root users —...

Ned · Jul 18

AWS Cloud

Why Your S3 Bucket Keeps Growing: Lifecycle Policies for Non-Current Versions in Versioned Buckets

When S3 versioning is enabled, deleting objects only creates delete markers while previous versions persist. Learn how to...

Ned · Jul 18

AWS Cloud

S3 Standard-IA: Lower Cost Storage with Immediate Retrieval for Infrequent Access

Understand when to use S3 Standard-IA for data that is rarely accessed but must remain immediately available, and...

Ned · Jul 18

AWS Cloud

S3 Lifecycle for IoT Data: Standard to Standard-IA to Glacier Deep Archive

Design a three-tier S3 lifecycle policy for IoT sensor data — hot storage for daily ML training, warm...

Ned · Jul 18

AWS Cloud

Two S3 Cost Optimizations You Should Always Enable: Intelligent-Tiering and Multipart Upload Cleanup

Combine S3 Intelligent-Tiering for unpredictable access patterns with lifecycle cleanup of incomplete multipart uploads to eliminate two common...

Ned · Jul 17

AWS Cloud

Serverless Streaming to S3 with Kinesis Data Firehose and Lifecycle Archival to Glacier

Ingest 1 TB/day of IoT alerts via Kinesis Data Firehose to S3, keep 14 days for analysis, then...

Ned · Jul 17

AWS Cloud

S3 Intelligent-Tiering for Multi-AZ Resilient Storage with Unpredictable Access

Use S3 Intelligent-Tiering for data with changing access patterns that must survive AZ failures. Understand why One Zone-IA...

Ned · Jul 17

AWS Cloud

Multi-Stage S3 Lifecycle: Standard to Standard-IA to Glacier with Auto-Deletion

Design a multi-stage S3 lifecycle policy that transitions data through Standard, Standard-IA, and Glacier Flexible Retrieval, then auto-deletes...

Ned · Jul 17

AWS Cloud

Retaining Application Logs for 10 Years: S3 Lifecycle to Glacier Deep Archive

Store 10+ TB of monthly application logs in S3, then use lifecycle policies to automatically archive to Glacier...

Ned · Jul 17

AWS Cloud

S3 Glacier with Expedited Retrieval: Archive Storage with 5-Minute Access When You Need It

Store rarely accessed data in S3 Glacier Flexible Retrieval at minimal cost, then use expedited retrievals to get...

Ned · Jul 17

AWS Cloud

Archiving Backup Files to S3 Glacier Deep Archive: The Cheapest Long-Term Storage in AWS

Configure S3 lifecycle policies to automatically move backup files from S3 Standard to Glacier Deep Archive after the...

Ned · Jul 16

AWS Cloud

S3 Lifecycle for Versioned Buckets: How to Control Non-Current Version Retention

Learn how S3 lifecycle rules with NoncurrentVersionExpiration automatically delete old object versions in versioned buckets, reducing storage costs...

Ned · Jul 16

AWS Cloud

Store VPC Flow Logs in S3 with Lifecycle Tiering for Cost-Effective Log Retention

Configure VPC flow logs to write directly to S3 and use lifecycle policies to transition older logs to...

Ned · Jul 16

AWS Cloud

When to Use S3 Intelligent-Tiering: The Right Choice for Unpredictable Access Patterns

S3 Intelligent-Tiering automatically moves data between access tiers based on usage. Learn when it beats lifecycle policies and...

Ned · Jul 16

AWS Cloud

S3 Lifecycle Policy vs Intelligent-Tiering: Why Predictable Access Patterns Call for Lifecycle Rules

When your data access pattern is predictable, S3 lifecycle policies that transition to Standard-IA are cheaper and simpler...

Ned · Jul 16

AWS Cloud

AWS S3 Lifecycle Policy: Automatically Transition Data to Glacier Deep Archive for Long-Term Retention

Learn how to configure S3 lifecycle policies to keep data in S3 Standard for immediate access, then automatically...

Ned · Jul 16