Category: Operating Systems
Trending in Operating Systems
Kernel and sysctl Tuning for High-Performance Nodes
Default Linux kernel parameters are tuned for general-purpose workloads that balance responsiveness, throughput, and memory usage across diverse…
Installing and Configuring OpenClaw on Ubuntu 24 Using Docker Part 5: Local LLM with Ollama and Security Hardening
Install Ollama for local LLM inference, configure automatic cloud-to-local fallback, lock down file permissions, create encrypted backups, and…
Installing and Configuring OpenClaw on Ubuntu 24 Using Docker Part 4: Installing Skills and Configuring Automation
Install skills from the ClawHub marketplace, create a custom morning briefing skill, and configure cron-based automation so the…
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Installing and Configuring OpenClaw on Ubuntu 24 Using Docker Part 3: Configuring Messaging Channels
Connect Telegram, Discord, and WhatsApp to the OpenClaw gateway so all three LumaNova teams can interact with the…
Installing and Configuring OpenClaw on Ubuntu 24 Using Docker Part 2: Cloning OpenClaw and Running the Docker Setup
Clone the OpenClaw repository, run the Docker setup script, complete the onboarding wizard with Anthropic as the LLM…
Installing and Configuring OpenClaw on Ubuntu 24 Using Docker Part 1: System Preparation and Docker Installation
A complete walkthrough of preparing an Ubuntu 24.04 LTS server with Docker CE, Docker Compose, and Node.js 22…
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- Installing and Configuring Blockchain Nodes on Ubuntu 24 LTS, Part 7: Adding a New Organization and Cross-Org Validation
A production blockchain network must accommodate organizational change. New partners join consortiums, new offices open, and new regulatory entities need ledger access. In Hyperledger Fabric, adding…
- Installing and Configuring Blockchain Nodes on Ubuntu 24 LTS, Part 6: Deploying Chaincode and Testing Real Transactions
Deploy a Go chaincode for commodity trade settlement on the FjordTrade network, execute transactions to create, query, and transfer assets between organizations, and verify results through CouchDB.
- Installing and Configuring Blockchain Nodes on Ubuntu 24 LTS, Part 5: Creating a Channel and Joining Peers to the Network
Create the FjordTrade application channel, join all four peers from both organizations, configure anchor peers for cross-org gossip discovery, and verify synchronized ledger state.
- Installing and Configuring Blockchain Nodes on Ubuntu 24 LTS, Part 4: Writing Docker Compose Files and Launching the Network
Write Docker Compose files for orderers, peers, CouchDB, and certificate authorities, then launch and verify all 13 FjordTrade containers forming a Raft-based Hyperledger Fabric network.
- Installing and Configuring Blockchain Nodes on Ubuntu 24 LTS, Part 3: Generating Cryptographic Material and Network Configuration
Generate the complete PKI hierarchy, channel configuration, genesis block, and anchor peer updates for the FjordTrade Hyperledger Fabric network using cryptogen and configtxgen on Ubuntu 24.04 LTS.
- Blockchain Node Deployment on Ubuntu 24 LTS, Part 2: Installing Blockchain Prerequisites and Downloading Fabric
With a Docker-ready Ubuntu 24.04 LTS system in place from Part 1, the next layer of the FjordTrade blockchain deployment is the development toolkit. Hyperledger Fabric is not a single…
- Blockchain Node Deployment on Ubuntu 24 LTS, Part 1: System Preparation and Docker Installation
Building a production blockchain network starts long before writing chaincode or configuring consensus protocols. It starts with the operating system. A misconfigured kernel parameter, a missing…
- Preparing Hardened Linux for Blockchain Production
A blockchain node running on an unhardened Linux server is a liability to the entire consortium. Default Ubuntu or RHEL installations ship with permissive firewall rules, enabled root SSH access,…