Beyond Linux: Mastering Modern Operations – From Deployment to Cloud

Operations is not only about knowing Linux; a large part involves Windows operations, and we salute Windows ops engineers. This article discusses many facets of operations beyond just OS knowledge.

Key areas include environment deployment, troubleshooting and tuning, backup, high availability and clustering, monitoring and alerts, security and auditing, automation and DevOps, virtualization and cloud services.

Environment Deployment

Development creates the product logic, then hands it over to operations for deployment. The deployment environment must be prepared, such as installing software like Apache, Nginx, Tomcat, JDK, PHP, MySQL, etc., on Linux servers.

Version compatibility matters (e.g., Java 7 vs Java 8, PHP5 vs PHP7). After installing software, a testing environment is often needed, and sometimes operations must also set up the development environment.

Troubleshooting and Tuning

Problems rarely go smoothly. Shortly after launch, services may return 502 errors, leading to urgent investigation. The quickest method is to examine system and application logs, correlate symptoms with experience, locate the issue, and restore service.

After resolution, document lessons and write incident reports, and perform system tuning to avoid repeat failures.

Related technologies: top, vmstat, iftop, awk, sed, sar, iostat, strace, …

Backup

Plan for the best, prepare for the worst. The GitLab data loss incident showed that even when most backup strategies fail, a recent backup can prevent severe loss.

Implement redundant device backups, database backups (including offline copies), static website backups, and data center redundancy. Achieving active‑active setups provides even stronger protection.

Related technologies: rsync, crontab, LVM snapshots, mysqldump, extrabackup, full backup, differential backup, incremental backup, offline off‑site backup, …

High Availability and Clustering

Hardware cannot be guaranteed 24/7, but services must remain online. Proper high‑availability and redundancy enable automatic failover and removal of faulty nodes, keeping services running without user impact.

Related technologies: F5, Nginx, LVS, HA‑Proxy, MHA, Zookeeper, various distributed clustering solutions, …

Monitoring and Alerts

Operations engineers must constantly watch services 24/7. Automated monitoring tools send alerts via SMS, WeChat, DingTalk, email, etc., and can even trigger automatic failover or node removal, reducing manual fatigue.

Related technologies: Zabbix, Nagios, Cacti, Prometheus, open‑falcon, Ganglia, sar, …

Security and Auditing

Insecure network environments and server configurations expose systems to attacks. Ensure SQL injection protection, firewalls, avoid root+password logins, enable HTTPS, and audit system operations.

Related technologies: iptables, firewalld, WAF, auditd, proper service configurations, …

Automation and DevOps

Automation is the driving force of progress. Repetitive tasks like system installation, environment setup, version deployment, and batch operations should be scripted using tools such as shell, Python, Go, Rundeck, Ansible, SaltStack, Puppet, Chef, Cobbler, Fabric, etc., freeing engineers to focus on higher‑value work.

Related technologies: shell, Python, Go, Rundeck, Ansible, SaltStack, Puppet, Chef, Cobbler, Fabric, …

Virtualization and Cloud Services

The operations revolution is driven by cloud providers offering on‑demand servers, database clusters, and other resources with a few clicks, reducing the need for traditional ops roles.

Related technologies: Docker, Moby, Kubernetes, Xen, OpenStack, CoreOS, Hyper‑V, KVM, OpenShift, …