Keys to being a good SysAdmin and IT administrator
Do you want to stand out as a systems administrator in a sector that never stops evolving? Being a good SysAdmin in 2026 no longer means just keeping servers running. On the contrary, it means mastering automation, anticipating incidents, protecting the infrastructure and, above all, understanding that technology is a tool at the service of the business. In this article I share the keys that, after 30+ years managing critical infrastructures, I consider essential for any professional who aspires to excellence in this discipline.
A good SysAdmin automates everything they can
Automation is the foundation of any competent systems administrator. A good SysAdmin identifies repetitive tasks —backups, deployments, log rotation, security updates— and turns them into reproducible, auditable scripts.
Infrastructure as code
What is more, tools such as Ansible, Terraform or Puppet make it possible to define the entire infrastructure as versionable code. Every change is documented, reversible and can be replicated in seconds. According to Red Hat, organisations that adopt IaC cut their deployment times by up to 70%.
A good SysAdmin’s mindset is clear: if a task runs more than twice, it deserves a script. The time invested in automating today is recovered many times over in stability and availability tomorrow.
A good SysAdmin protects before repairing
Security is not a layer added afterwards: it is the foundation on which everything else is built. A good SysAdmin designs every system with defence in mind from minute zero.
Proactive security and Zero Trust
This means applying the principle of least privilege, segmenting networks, keeping systems patched and monitoring anomalous behaviour in real time. In addition, the Zero Trust model —where no one inside or outside the network is trusted— has established itself as the reference standard in cybersecurity.
Technical security is not enough without a security culture. A good SysAdmin also educates users, establishes clear password and access policies, and runs periodic incident drills. According to the NIST Cybersecurity Framework, incident preparedness is as important as prevention.
A good SysAdmin monitors and documents
Without doubt, monitoring is a systems administrator’s eyes and ears. Without visibility over the state of the infrastructure, every decision is made blindly.
Observability and smart alerts
Tools such as Zabbix, Prometheus, Grafana or Nagios make it possible to configure real-time dashboards and alerts that warn before a problem impacts the end user. A good SysAdmin does not wait for someone to call to say the service is down: they already know and are working on it.
Documentation is the other side of the coin. Every change, every incident, every architecture decision must be recorded. For this reason, keeping an up-to-date technical wiki (with Confluence, BookStack or simply Markdown files in a Git repository) is not bureaucracy: it is the difference between solving a problem in minutes or in hours.
A good SysAdmin never stops learning
On the other hand, few professions demand such constant updating as systems administration. What is the standard tool today can become obsolete in two years. A good SysAdmin regularly dedicates time to training, experimenting in labs and following industry trends.
From the terminal to the cloud
The evolution of the role is clear: from the physical server to virtualisation, from virtualisation to containers, from containers to Kubernetes, and from there to serverless and AI applied to operations (AIOps). Because of this, certifications such as RHCE, AWS Solutions Architect or CKA (Certified Kubernetes Administrator) are increasingly valued by organisations.
In addition, the community is a fundamental resource. Taking part in forums such as Server Fault, contributing to open-source projects, attending local meetups or following reference technical blogs keeps the professional connected with the reality of the sector.
A good SysAdmin communicates and thinks about the business
Finally, technical competence alone is not enough. A good SysAdmin knows how to translate technical language into business language. When proposing an investment in redundancy, they do not talk about RAID or failover: they talk about service continuity and how much money the company loses for every hour of downtime.
The SysAdmin as strategist
The modern systems administrator is not a technician isolated in a data centre: they are a professional who takes part in strategic decisions, who understands SLAs, who talks to suppliers and who collaborates with development teams in a real DevOps culture.
Effective communication, the ability to prioritise under pressure and a global view of the business are the soft skills that turn a competent technician into a good SysAdmin who brings real value to the organisation. Investing in these skills is as important as mastering the latest version of Linux.
A good SysAdmin in 2026: a vision of the future
In conclusion, being a good SysAdmin in 2026 demands a combination of technical depth, a security mindset, automation capability, continuous learning and communication skills. The profession has evolved enormously: it is no longer about maintaining machines, but about designing, protecting and orchestrating the digital ecosystems that sustain businesses.
AI is transforming IT operations, and the SysAdmin who understands how to make the most of it —without losing control or judgement— will be the most in-demand professional in the market. Curiosity, discipline and a passion for solving problems remain, as always, the qualities that define the best in this profession.
To see how the SysAdmin role fits with industry trends, I recommend the systems administration landscape in 2026.
To complement the modern sysadmin role: AIOps in operations and autonomous agents in Microsoft 365.
Frequently asked questions
The good one automates the repetitive, documents before there is an incident and understands the business. The mediocre one puts out fires, keeps scripts in their personal folder and complains about the user. The real difference shows in the small hours of an outage: one consults their runbook and resolves it, the other improvises and loses data. It is a matter of method, not talent.
Solid command of Linux, scripting (Python or Bash), TCP/IP networking, containers (Docker, basic Kubernetes), a cloud provider and observability. Without that foundation, a modern infrastructure cannot hold up.
Yes, but the role changes. You no longer administer servers one by one; you govern platforms that self-heal. Anyone who keeps thinking in pets instead of cattle falls out of the market. The 2026 sysadmin works with infrastructure as code, observability and declarative security policies. AI absorbs the routine; what remains is design and judgement.
Not documenting, relying only on memory, not testing backup restores and storing credentials in plain text. Any of the four can end a career in a single night. To those four I usually add a less visible one: applying changes in production without a window or a way to roll back. Speed without a safety net is the recipe for any operational disaster.
Automate everything repetitive, never stop learning and work on communication with the business. The SysAdmin who stays only at the console is expendable; the one who moves towards infrastructure as code, observability and metrics that matter to the CFO multiplies their value. Technique keeps you in the job; the business gets you promoted.
A migration that cannot stop the business? That is what I have done for thirty years.
See the nine case studies