Sujan Guragain · Journalhttps://sujanguragain.com.np/journal/Sujan Guragain — DevOps, systems administration and infrastructure security. Projects and technical notes on Linux, monitoring, automation and production services.enGrafana and Prometheus: monitoring production serviceshttps://sujanguragain.com.np/journal/grafana-prometheus-monitoring/https://sujanguragain.com.np/journal/grafana-prometheus-monitoring/Sat, 31 Oct 2026 12:00:00 GMTA practical structure for service dashboards, useful alerts and dashboard exports.MonitoringFrom a vulnerability scan to a useful security reviewhttps://sujanguragain.com.np/journal/vulnerability-scanning-owasp-zap/https://sujanguragain.com.np/journal/vulnerability-scanning-owasp-zap/Sat, 31 Oct 2026 12:00:00 GMTScoping a review, using OWASP ZAP carefully and turning scanner output into findings a team can act on.Application securityUsing n8n and Nmap for repeatable network inventoryhttps://sujanguragain.com.np/journal/n8n-nmap-network-inventory/https://sujanguragain.com.np/journal/n8n-nmap-network-inventory/Sat, 31 Oct 2026 12:00:00 GMTA workflow pattern for approved scans, structured results and notifications when network exposure changes.AutomationMySQL operations: performance, backups and recoveryhttps://sujanguragain.com.np/journal/mysql-production-operations/https://sujanguragain.com.np/journal/mysql-production-operations/Sat, 31 Oct 2026 12:00:00 GMTWhat to check when a production database slows down, and what a backup needs before it can be trusted.DatabasesTaking a Tomcat intranet into productionhttps://sujanguragain.com.np/journal/tomcat-intranet-production/https://sujanguragain.com.np/journal/tomcat-intranet-production/Sat, 31 Oct 2026 12:00:00 GMTThe checks around a Java application release: proxy behaviour, database access, service operation and recovery.Application infrastructureELK logging and dashboards that can be reusedhttps://sujanguragain.com.np/journal/elk-logging-dashboard-exports/https://sujanguragain.com.np/journal/elk-logging-dashboard-exports/Sat, 31 Oct 2026 12:00:00 GMTOrganizing application logs and exporting Kibana dashboards with the dependencies needed to restore them.ObservabilityOperating a private Hermes AI workspacehttps://sujanguragain.com.np/journal/building-a-private-ai-workspace/https://sujanguragain.com.np/journal/building-a-private-ai-workspace/Sat, 31 Oct 2026 12:00:00 GMTHow model serving, a web interface and role-specific agent workflows fit into an internal AI environment.AI infrastructureSecurity across a bank’s digital channelshttps://sujanguragain.com.np/journal/banking-digital-channel-security/https://sujanguragain.com.np/journal/banking-digital-channel-security/Sat, 31 Oct 2026 12:00:00 GMTLooking at mobile banking, web portals and employee endpoints as connected parts of one service.Security perspectivesThe infrastructure behind digital bankinghttps://sujanguragain.com.np/journal/digital-banking-infrastructure/https://sujanguragain.com.np/journal/digital-banking-infrastructure/Sat, 31 Oct 2026 12:00:00 GMTCore applications, branch services and digital channels need an operational view that connects them.Infrastructure perspectivesCloud security starts with clear ownershiphttps://sujanguragain.com.np/journal/cloud-security-ownership/https://sujanguragain.com.np/journal/cloud-security-ownership/Sat, 31 Oct 2026 12:00:00 GMTA practical look at access, configuration, logging and recovery responsibilities in a cloud environment.Security perspectives