Why Operations Engineers Aren’t “Low”: Real‑World Skills and Challenges

Developers often underestimate the breadth and depth of operations work, assuming it only involves simple machine or database management. Several Zhihu contributors share concrete examples that demonstrate how operations engineers actually perform advanced monitoring, system debugging, and security tasks.

Comprehensive Monitoring

Operations teams build full‑stack monitoring for Linux services, covering network, disk, CPU, and memory. They collect low‑level metrics using tools such as route, iptables, tcptop, biotop, biosnoop, and custom scripts, then push the data to cloud‑based observability platforms for real‑time analysis.

Deep Linux Knowledge

Senior operators can debug the Linux kernel, step through the boot process, and diagnose obscure issues like missing source hooks that prevent environment‑variable changes from taking effect. They use kernel‑level debugging tools (e.g., perf) to pinpoint high‑CPU threads and memory bottlenecks, often with more precision than developers.

Fire‑fighting and Root‑cause Analysis

When a service experiences resource exhaustion—CPU spikes, disk I/O saturation, or connection‑count exhaustion—operators first isolate the offending resource, then determine whether the problem originates from application code or mis‑configured infrastructure. They avoid blaming developers prematurely and provide detailed evidence before requesting code changes.

Network and Security Management

Operations engineers design and secure network architectures, configure firewalls, manage VPNs, and enforce strict access controls. They handle threats such as malicious traffic, privilege escalation, and hidden backdoors, often implementing multi‑layered defenses and rapid incident response procedures.

Additional Observations

Automation scripts written by ops can become single points of failure if not maintained; loss of the author often leads to manual work and increased personnel cost.

Ops must understand a wide range of technologies: Docker/K8s, various Linux distributions, Windows Server, multiple databases (MySQL, Oracle, SQL Server), cloud platforms (Alibaba Cloud, Huawei Cloud), and hardware (RAID, KVM, OpenStack).

Real‑world incidents—such as accidental deletion of production databases or network outages caused by mis‑executed scripts—highlight the high stakes of ops work and the need for rigorous double‑ and triple‑checks.

Overall, the discussion underscores that operations engineering is a highly technical discipline requiring extensive system knowledge, proactive monitoring, and disciplined incident handling, far from the “low‑skill” perception some developers hold.