DevOps

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Configure Proxmox VE cluster network with LACP bonding on 25G fiber for Corosync/migration, separate management VLAN on vmbr1, VLAN-aware vmbr2 for VMs. Full /etc/network/interfaces examples, testing, no host routing needed.

Resolve 'broken pipe' error during chaincode deployment with deployCC in Hyperledger Fabric test-network on Docker Desktop 4.56.0. Causes, step-by-step fixes like downgrading Docker, socket permissions, and WSL2 for successful builds.

Remove (Avg)/(Sum) labels from Azure Workbooks legends and enable hover tooltips by renaming KQL columns, using make-series, and switching to line/bar charts.

Fix CloudFront-Viewer-Country-Name, Region headers not reaching Lambda via API Gateway after Nov 2023 change. Configure Origin Request Policy, Lambda proxy integration, Regional API Gateway, or Lambda@Edge workaround for reliable forwarding.

Troubleshoot LibreChat MCP stuck at 'Creating new instance' and Docker UID/GID warnings. Add numeric UID/GID to .env, verify ClickHouse, and check logs & perms.

Troubleshoot Newman API tests failing behind Cloudflare Access in GitHub Actions. Learn to pass CF-Access-Client-Id and Client-Secret headers using --env-var or fixed environment.json for secure CI/CD automation.

Troubleshoot Kubernetes NodePort not accessible on Minikube for React frontend served by Nginx. Fix blank pages, config substitution, networking issues with minikube service, port-forward, and proxy solutions.

Fix 'context deadline exceeded' when uploading large files (~4GB) to MinIO using mc cp. Tune multipart part-size (64-128MiB), parallelism, proxy timeouts (Nginx 30m), and server configs for reliable uploads.

Fix MariaDB 1364 in Dockerized PHP Yii apps: SQL mode (STRICT_TRANS_TABLES) causes NOT NULL insert failures. Learn quick fixes using docker-compose or my.cnf.

Learn how to enable Two-Factor Authentication (2FA/MFA) in Alfresco Content Services 7.4 using external IdPs like Keycloak, Azure AD, or Okta. No native support—follow official guides for secure Alfresco authentication via SAML/OIDC.

Guide to configure a redundant Proxmox cluster network using Corosync rings on spare NICs. Includes IPs, knet/corosync config, link priorities, and failover testing.

Free vibe coding courses compared (Microsoft, Coursera, Great Learning). Includes step-by-step VPS deployment for vibe-code projects on Ubuntu with PM2 + Nginx.

Fix root:root ownership for bind-mounted files in VS Code Dev Containers on Docker WSL2. Why chown fails and options: WSL2 filesystem, Docker volumes, or rsync.

Resolve cURL error 60: SSL certificate problem in Docker Debian Bullseye. Update CA certificates, upgrade base image, or fix trust store for Laravel Guzzle HTTPS APIs securely.

Fix InvalidInputException when creating AWS Glue native BigQuery connection with Go SDK v2. Configure SparkProperties JSON with secretId for Secrets Manager GCP credentials correctly.

Troubleshoot Synology MailPlus authentication issues where login fails for email domains like user1@mydomen.ru but succeeds with local domain user1@mydomen.local. Learn Directory Server role, alias priority, and step-by-step fixes.

Drop internal Kubernetes HTTP dependencies in Application Insights with an ITelemetryProcessor. Filter by target/URL, type, or duration; or use OTEL/sampling.

Why does your Git pull request show hundreds of unexpected file changes after adding one file? Learn about merge-base issues, line endings (CRLF/LF), and fixes like rebasing, fresh branches, or .gitattributes normalization for safe merges.

Learn Ansible playbook steps to create JSON files, check existence, copy to directories, loop with custom loop_var, filter by tech_stack, remove ansible entries, and replace dark theme with light theme. Full code examples.